{"id":3456,"date":"2024-07-25T06:45:08","date_gmt":"2024-07-25T06:45:08","guid":{"rendered":"https:\/\/pharm.sinocurechem.com\/?p=3456"},"modified":"2024-07-25T06:45:08","modified_gmt":"2024-07-25T06:45:08","slug":"octadecanedioic-acid-properties-applications-synthesis-and-comparative-analysis","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/da\/octadecandisyre-egenskaber-anvendelser-syntese-og-sammenlignende-analyse\/","title":{"rendered":"Octadecandisyre: Egenskaber, anvendelser, syntese og sammenlignende analyse"},"content":{"rendered":"<p class=\"MsoNormal\"><span style=\"text-indent: -21.25pt; font-family: Georgia; font-weight: bold; font-size: 14pt;\">1. <\/span><b style=\"text-indent: -21.25pt;\"><span style=\"font-family: Georgia; font-size: 14pt;\">Kemisk identitet:<\/span><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Navn: Octadecandisyre<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">CAS-nummer: 871-70-5<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Molekyl\u00e6r formel: C18H34O4<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">IUPAC-navn: Octadecandisyre<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Andre navne: 1,18-octadecandisyre, C18-diacid<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l0 level1 lfo1;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 14.0000pt; mso-font-kerning: 1.0000pt;\">2.\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 14pt;\">Fysiske og kemiske egenskaber: <\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Udseende: Hvidt krystallinsk fast stof<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Molekylv\u00e6gt: 314,46 g\/mol<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Smeltepunkt: 123-124\u00b0C<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Kogepunkt: 250\u00b0C (ved 4 mmHg)<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Opl\u00f8selighed: Let opl\u00f8seligt i vand, opl\u00f8seligt i organiske opl\u00f8sningsmidler<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l0 level1 lfo1;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 14.0000pt; mso-font-kerning: 1.0000pt;\">3.\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 14pt;\">Anvendelser<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l4 level1 lfo2;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">1)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">Produktion af polymerer<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Polyamider og polyestere er to forskellige klasser af polymerer, der fremstilles gennem forskellige processer.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">ODDA er en monomer, der i vid udstr\u00e6kning anvendes til syntese af h\u00f8jtydende polyamider og polyestere. Den alifatiske k\u00e6de i ODDA giver de resulterende polymerer \u00f8get fleksibilitet, elasticitet og kemisk og termisk modstandsdygtighed. De specifikke anvendelser omfatter:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Teknisk plast: Materialet anvendes i bil-, el- og elektronikindustrien til fremstilling af komponenter, der skal v\u00e6re holdbare og modstandsdygtige over for h\u00f8je temperaturer.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Fibre: Disse polymerer anvendes til fremstilling af tekstiler og industristoffer p\u00e5 grund af deres kombination af styrke og elasticitet.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Film: Disse materialer anvendes til fremstilling af emballage og specialfilm, hvor holdbarhed og barriereegenskaber er af afg\u00f8rende betydning.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Fordelene ved performance er som f\u00f8lger:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Materialet udviser fleksibilitet og sejhed. Den forl\u00e6ngede k\u00e6del\u00e6ngde giver materialet eksemplariske mekaniske egenskaber.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Kemisk modstandsdygtighed: Den forbedrede modstandsdygtighed over for opl\u00f8sningsmidler og kemikalier g\u00f8r disse polymerer velegnede til brug i barske milj\u00f8er.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Termisk stabilitet er en egenskab, der g\u00f8r det muligt for polymerer at modst\u00e5 h\u00f8je temperaturer uden at underg\u00e5 v\u00e6sentlige \u00e6ndringer i deres kemiske sammens\u00e6tning eller fysiske struktur. Disse materialers forbedrede varmebestandighed giver mulighed for at udvide deres potentielle anvendelsesomr\u00e5der.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l4 level1 lfo2;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">2)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">Sm\u00f8remidler og fedtstoffer<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Indarbejdelsen af ODDA i formuleringen af sm\u00f8remidler og fedt er et afg\u00f8rende skridt i forbedringen af deres egenskaber.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Termisk stabilitet er en egenskab, der g\u00f8r det muligt for et stof at modst\u00e5 h\u00f8je temperaturer uden at underg\u00e5 v\u00e6sentlige \u00e6ndringer i dets kemiske sammens\u00e6tning eller fysiske tilstand. Indarbejdelsen af ODDA i sm\u00f8remiddelformuleringer forbedrer den termiske stabilitet af disse materialer, hvilket g\u00f8r dem egnede til anvendelse ved h\u00f8je temperaturer.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Viskositetsindeks: Det bidrager til en stabil viskositet over et bredt temperaturomr\u00e5de, hvilket sikrer en ensartet ydeevne.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"font-family: Georgia; font-size: 12pt;\">Sm\u00f8reevne: Forbedret sm\u00f8reevne reducerer friktion og slid, hvilket forl\u00e6nger levetiden for mekaniske komponenter.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l4 level1 lfo2;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">3)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">Kosmetik og personlige plejeprodukter<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">ODDA er v\u00e6rdsat i kosmetik- og personlig plejeindustrien for sine bl\u00f8dg\u00f8rende egenskaber.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Fugtprocessen er afg\u00f8rende for at opretholde en optimal sundhed i huden. Det hj\u00e6lper med at holde p\u00e5 hudens fugt, hvilket g\u00f8r det til en effektiv komponent i formuleringen af cremer og lotions.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Den bl\u00f8dg\u00f8rende effekt opn\u00e5s ved: Det anvendes i h\u00e5rplejeprodukter for at give h\u00e5ret bl\u00f8dhed og plejende egenskaber.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Produktets stabilitet er sikret. Det tjener til at forbedre formuleringernes stabilitet og holdbarhed.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">F\u00f8lgende produkter er tilg\u00e6ngelige:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Inden for hudpleje er fugtighedscremer, anti-aging-cremer og solcreme blandt de produkter, der bruger denne ingrediens.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Produktsortimentet omfatter ogs\u00e5 produkter til brug i h\u00e5ret. Balsam, h\u00e5rmasker og serum er ogs\u00e5 tilg\u00e6ngelige.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Produktlinjen for personlig pleje omfatter: Produktsortimentet omfatter lotions, kropscremer og badeprodukter.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l4 level1 lfo2;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">4)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">L\u00e6gemidler<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">I den farmaceutiske industri unders\u00f8ger man ODDA's potentiale i systemer til levering af l\u00e6gemidler.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Formuleringer med vedvarende frigivelse: ODDA's biokompatibilitet og bionedbrydelighed g\u00f8r det til et passende materiale til udvikling af l\u00e6gemiddelformuleringer med vedvarende frigivelse, som letter den kontrollerede frigivelse af aktive ingredienser.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">B\u00e6rere af l\u00e6gemidler: Det anvendes som b\u00e6restof for aktive farmaceutiske ingredienser (API'er) med det form\u00e5l at forbedre deres stabilitet og biotilg\u00e6ngelighed.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">De potentielle anvendelser af ODDA er mange og forskelligartede.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Oral levering af l\u00e6gemidler: Tabletter og kapsler med forl\u00e6nget frigivelse.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Aktuelle formuleringer: Aktuelle formuleringer, s\u00e5som cremer og salver, anvendes til lokal behandling.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Injicerbare formuleringer: Bionedbrydelige b\u00e6rere til injicerbare stoffer med vedvarende frigivelse.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l4 level1 lfo2;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">5)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">Korrosionsh\u00e6mmere<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">ODDA anvendes som korrosionsinhibitor i en r\u00e6kke industrisektorer, hvor det beskytter metaloverflader mod de skadelige virkninger af oxidation.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Metalbearbejdningsv\u00e6sker: Det tils\u00e6ttes v\u00e6sker, der bruges til sk\u00e6ring, slibning og bearbejdning for at beskytte b\u00e5de v\u00e6rkt\u00f8jet og emnerne.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Bel\u00e6gninger: Indarbejdelsen af denne forbindelse i maling og bel\u00e6gninger tjener til at forhindre korrosion af metalkonstruktioner.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Fordelene ved produktet med hensyn til ydeevne er som f\u00f8lger:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Beskyttelse er en vigtig fordel ved dette produkt. Det danner et beskyttende lag p\u00e5 metaloverflader og h\u00e6mmer oxidations- og korrosionsprocesserne.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Bel\u00e6gningens holdbarhed afh\u00e6nger af f\u00f8lgende faktorer: Den tjener til at forl\u00e6nge levetiden for metalkomponenter og -konstruktioner.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Produktet er velegnet til brug i en r\u00e6kke forskellige industrier.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">I bilindustrien tjener anvendelsen af beskyttende bel\u00e6gninger p\u00e5 k\u00f8ret\u00f8jskomponenter til at beskytte disse komponenter mod de skadelige virkninger af korrosion og oxidering.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">I byggebranchen kan brugen af disse bel\u00e6gninger forl\u00e6nge levetiden for metalkomponenter og -konstruktioner. Korrosionsbestandige bel\u00e6gninger til bygninger og infrastruktur.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Olie- og gasindustrien kr\u00e6ver beskyttende bel\u00e6gninger til en lang r\u00e6kke komponenter og udstyr. Beskyttelse af r\u00f8rledninger og boreudstyr er af allerst\u00f8rste betydning i olie- og gasindustrien.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l0 level1 lfo1;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 14.0000pt; mso-font-kerning: 1.0000pt;\">4.\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 14pt;\">Syntese<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l3 level1 lfo3;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">1)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">Kemisk syntese:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><b><span style=\"font-family: Georgia; font-size: 12pt;\">a) Oxidation af oliesyre:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Substrat: Oliesyre (cis-9-octadecenoic acid)<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Proces:<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 0.0000pt; mso-para-margin-left: 0.0000gd; text-indent: 0.0000pt; mso-char-indent-count: 0.0000; mso-list: l5 level1 lfo4;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">a.\u00a0<\/span><!--[endif]--><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Epoxidering af dobbeltbindingen ved hj\u00e6lp af hydrogenperoxid og myresyre.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 0.0000pt; mso-para-margin-left: 0.0000gd; text-indent: 0.0000pt; mso-char-indent-count: 0.0000; mso-list: l5 level1 lfo4;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">b.\u00a0<\/span><!--[endif]--><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Ring\u00e5bning af epoxiden for at danne en vicinal diol.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 0.0000pt; mso-para-margin-left: 0.0000gd; text-indent: 0.0000pt; mso-char-indent-count: 0.0000; mso-list: l5 level1 lfo4;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">c.\u00a0<\/span><!--[endif]--><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Oxidativ spaltning af diolen ved hj\u00e6lp af periodisk syre eller natriumperiodat.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Katalysatorer: Forskellige overgangsmetalkatalysatorer kan bruges til at forbedre selektiviteten og udbyttet.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Fordele: Veletableret proces, kan bruge b\u00e5de biobaseret og petrokemisk oliesyre.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Udfordringer: Flere trin, risiko for bivirkninger.<\/span><\/p>\n<p class=\"MsoNormal\"><b><span style=\"font-family: Georgia; font-size: 12pt;\">b) Oxidation af um\u00e6ttede fedtsyrer:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Svarer til oliesyreoxidation, men kan bruge en blanding af um\u00e6ttede fedtsyrer.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Kr\u00e6ver ofte et separationstrin for at isolere octadecandisyre fra diacider med anden k\u00e6del\u00e6ngde.<\/span><\/p>\n<p class=\"MsoNormal\"><b><span style=\"font-family: Georgia; font-size: 12pt;\">c) Carbonylering af 1,17-octadecadien:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Proces:<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 0.0000pt; mso-para-margin-left: 0.0000gd; text-indent: 0.0000pt; mso-char-indent-count: 0.0000; mso-list: l1 level1 lfo5;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">a.\u00a0<\/span><!--[endif]--><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Syntese af 1,17-octadecadien fra petrokemiske r\u00e5materialer.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 0.0000pt; mso-para-margin-left: 0.0000gd; text-indent: 0.0000pt; mso-char-indent-count: 0.0000; mso-list: l1 level1 lfo5;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">b.\u00a0<\/span><!--[endif]--><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Carbonylering ved hj\u00e6lp af kulilte og vand i n\u00e6rv\u00e6r af en katalysator.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Katalysatorer: Bruger typisk palladiumbaserede katalysatorer.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Fordele: Kan opn\u00e5 h\u00f8j selektivitet.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Udfordringer: Kr\u00e6ver h\u00f8jt tryk og h\u00f8j temperatur, brug af giftig kulilte.<\/span><\/p>\n<p class=\"MsoNormal\"><b><span style=\"font-family: Georgia; font-size: 12pt;\">d) Elektrokemisk syntese:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Involverer anodisk oxidation af oliesyre eller andre C18-fedtsyrer.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Processen foreg\u00e5r i en elektrokemisk celle med passende elektrolytter og elektrodematerialer.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Fordele: Potentielt mere milj\u00f8venlig end kemiske oxidationsmetoder.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Udfordringer: Opskalering og procesoptimering.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l3 level1 lfo3;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">2)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">Tilgange til gr\u00f8n kemi:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><b><span style=\"font-family: Georgia; font-size: 12pt;\">a) Fotokatalytisk oxidation:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Bruger sollys eller kunstige lyskilder med passende fotokatalysatorer.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Form\u00e5let er at udf\u00f8re selektiv oxidation under milde forhold.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">De langk\u00e6dede diacider som octadecandisyre er stadig i forskningsfasen.<\/span><\/p>\n<p class=\"MsoNormal\"><b><span style=\"font-family: Georgia; font-size: 12pt;\">b) Enzymatisk syntese:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Bruger isolerede enzymer eller helcelle-biokatalysatorer til selektiv oxidation.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Kan kombineres med kemiske trin i kemoenzymatiske processer.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Fordele: H\u00f8j selektivitet, milde reaktionsbetingelser.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Udfordringer: Enzymstabilitet, regenerering af cofaktorer, opskalering.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l0 level1 lfo1;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 14.0000pt; mso-font-kerning: 1.0000pt;\">5.\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 14pt;\">Sammenligning med andre dicarboxylsyrer<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l2 level1 lfo6;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">1)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">Strukturel sammenligning:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Octadecandisyre (C18H34O4) er en langk\u00e6det alifatisk dicarboxylsyre med 18 kulstofatomer.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Almindelige kortere k\u00e6dede diacider omfatter:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Ravsyre (C4H6O4)<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Adipinsyre (C6H10O4)<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Suberinsyre (C8H14O4)<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Sebacinsyre (C10H18O4)<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Dodecandisyre (C12H22O4)<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">L\u00e6ngere k\u00e6dede disyrer som eicosanedioic acid (C20H38O4) er mindre almindelige.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l2 level1 lfo6;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">2)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">Fysiske egenskaber:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">a) Smeltepunkt:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Octadecandisyre: 123-124\u00b0C<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Generelt stiger smeltepunkterne med k\u00e6del\u00e6ngden op til C10-C12, hvorefter de n\u00e5r et plateau eller falder en smule:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Ravsyre: 185\u00b0C<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Adipinsyre: 152\u00b0C<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Sebacinsyre: 134\u00b0C<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Dodecandisyre: 128-129\u00b0C<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">b) Opl\u00f8selighed:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Vandopl\u00f8seligheden falder med stigende k\u00e6del\u00e6ngde.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Octadecandisyre er kun let opl\u00f8selig i vand, men mere opl\u00f8selig i organiske opl\u00f8sningsmidler.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Kortere k\u00e6dede disyrer (f.eks. ravsyre, adipinsyre) har h\u00f8jere vandopl\u00f8selighed.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">c) Volatilitet:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Falder med stigende k\u00e6del\u00e6ngde.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Octadecandisyre har lavere flygtighed sammenlignet med kortere k\u00e6dede disyrer.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l2 level1 lfo6;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">3)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">Kemisk reaktivitet:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Alle dicarboxylsyrer kan underg\u00e5 typiske carboxylsyrereaktioner (forestring, amidering osv.).<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">L\u00e6ngere k\u00e6der som octadecandisyre:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Har nedsat reaktivitet p\u00e5 grund af \u00f8get sterisk hindring.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Viser \u00f8get hydrofobicitet, hvilket p\u00e5virker reaktionsmilj\u00f8er og katalyse.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l2 level1 lfo6;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">4)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">Anvendelser af polymerer:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">a) Polyestere:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Octadecandisyre producerer polyestere med:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Lavere smeltepunkter<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">\u00d8get fleksibilitet<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Forbedret hydrofobicitet<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Kortere k\u00e6dede disyrer (f.eks. adipinsyre) giver mere stive, h\u00f8jsmeltende polyestere.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">b) Polyamider:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Octadecandisyre-baserede polyamider har:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Lavere smeltepunkter<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Forbedret slagstyrke ved lave temperaturer<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Forbedret modstandsdygtighed over for fugtabsorption<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Sammenlignet med nylon-6,6 (fra adipinsyre), som har h\u00f8jere krystallinitet og smeltepunkt.<\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-left: 21.2500pt; mso-para-margin-left: 0.0000gd; text-indent: -21.2500pt; mso-char-indent-count: 0.0000; mso-list: l2 level1 lfo6;\"><!-- [if !supportLists]--><span style=\"font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-weight: bold; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">5)\u00a0<\/span><!--[endif]--><b><span style=\"font-family: Georgia; font-size: 12pt;\">Bionedbrydelighed:<\/span><\/b><b><\/b><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Generelt falder bionedbrydeligheden med stigende k\u00e6del\u00e6ngde.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Octadecandisyre nedbrydes langsommere end diacider med kortere k\u00e6der.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Det anses dog stadig for at v\u00e6re biologisk nedbrydeligt i mods\u00e6tning til nogle aromatiske disyrer.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Industriel produktion:<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Kortere k\u00e6dede diacider (C4-C6) produceres prim\u00e6rt via petrokemiske ruter.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Mellemk\u00e6dede diacider (C8-C12) har b\u00e5de biobaserede og petrokemiske produktionsmetoder.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">Octadecandisyre produceres i stigende grad ved hj\u00e6lp af bioteknologiske metoder, hvilket adskiller den fra de mere kortk\u00e6dede modstykker.<\/span><\/p>\n<p class=\"MsoNormal\"><span style=\"mso-spacerun: 'yes'; font-family: Georgia; mso-fareast-font-family: \u5b8b\u4f53; font-size: 12.0000pt; mso-font-kerning: 1.0000pt;\">\u00a0<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>1. Chemical Identity: Name: Octadecanedioic acid CAS Number: 871-70-5 Molecular Formula: C18H34O4 IUPAC Name: Octadecanedioic acid Other names: 1,18-Octadecanedioic acid, C18 diacid 2.\u00a0Physical and Chemical Properties: Appearance: White crystalline solid Molecular Weight: 314.46 g\/mol Melting Point: 123-124\u00b0C Boiling Point: 250\u00b0C (at 4 mmHg) Solubility: Slightly soluble in water, soluble in organic solvents 3.\u00a0Applications 1)\u00a0Polymer Production [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Octadecanedioic Acid: Properties, Applications, Synthesis, and Comparative Analysis - China Chemical Manufacturer<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangextracts.com\/da\/octadecandisyre-egenskaber-anvendelser-syntese-og-sammenlignende-analyse\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Octadecanedioic Acid: Properties, Applications, Synthesis, and Comparative Analysis - China Chemical Manufacturer\" \/>\n<meta property=\"og:description\" content=\"1. 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