ASTM D4663-2010 聚亚胺酯原材料法测定异氰酸酯中可水解氯含量的标准试验方法

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【英文标准名称】:StandardTestMethodforPolyurethaneRawMaterialsDeterminationofHydrolyzableChlorineofIsocyanates
【原文标准名称】:聚亚胺酯原材料法测定异氰酸酯中可水解氯含量的标准试验方法
【标准号】:ASTMD4663-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D20.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aromaticisocyanates;hydrolyzablechlorine;isocyanates;polyurethanerawmaterials;titration;toluenediisocyanate;Carbamoylchloride;Carbondioxide;Chlorinecontent--plastics;Hydrochloricacid(HCL);Hydrolyzablechlorine;Isocyanates;Methan
【摘要】:Thistestmethodcanbeusedforresearchorforqualitycontroltocharacterizetoluenediisocyanates.Hydrolyzablechlorinecorrelateswithperformanceinsomepolyurethanesystems.1.1Thistestmethoddeterminesthehydrolyzablechlorinecontentoftoluene-2,4-diisocyanate,toluene-2,6-diisocyanate,ormixturesofthetwo.Itisacceptabletoapplythistestmethodtootherisocyanatesofsuitablesolubility.(SeeNote1.)Themainsourcesofhydrolyzablechlorineintheisocyanatesarecarbamoylchlorideanddissolvedphosgene.Bothofthesecompoundsreactwithalcoholsandwater,formingureas,carbamates,carbondioxide,andhydrochloricacid.(SeeNote2.)1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;Itispossiblethatthistestmethodisapplicablecrudepolymericisocyanates.However,theprecisionwithcrudepolymericisocyanateshasnotbeenestablished.Note28212;ThereisnoknownISOequivalenttothisstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_10
【页数】:3P.;A4
【正文语种】:英语