METHOD OF PREPARING DIISOCYANATE COMPOSITION AND OPTICAL LENS AND DIAMINE HYDROCHLORIDE SALT COMPOSITION THEREFOR

Provided is a method for manufacturing a diisocyanate composition and an optical lens, which uses an aqueous hydrochloric acid solution and an organic solvent instead of hydrogen chloride gas and uses solid triphosgene instead of phosgene gas in a process of preparing diisocyanate from diamine throu...

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Bibliographische Detailangaben
Hauptverfasser:	PAI JAEYOUNG, HAN HYUK HEE, MYUNG JUNG HWAN, KIM JEONGMOO
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Provided is a method for manufacturing a diisocyanate composition and an optical lens, which uses an aqueous hydrochloric acid solution and an organic solvent instead of hydrogen chloride gas and uses solid triphosgene instead of phosgene gas in a process of preparing diisocyanate from diamine through diamine hydrochloride, and exhibits excellent yield and quality while reducing environmental problems by adjusting a b* value according to CIE color coordinates in water in the diamine hydrochloride composition. 디아민으로부터 디아민 염산염을 거쳐 디이소시아네이트를 제조하는 과정에서, 염화수소 가스 대신 염산 수용액과 유기 용매를 이용하고 포스겐 가스 대신 고상의 트리포스겐을 이용하면서, 디아민 염산염 조성물의 물 중에서의 CIE 색좌표에 따른 b* 값을 조절함으로써, 환경 문제가 적으면서도 수율 및 품질이 우수한 디이소시아네이트 조성물 및 광학 렌즈의 제조방법이 제공된다.