METHOD OF PREPARING DIISOCYANATE COMPOSITION AND OPTICAL LENS AND TRIPHOSGENE COMPOSITION THEREFOR

The present invention provides a method for manufacturing a diisocyanate composition and an optical lens, wherein the diisocyanate composition, in a process of manufacturing diisocyanate from diamine through diamine hydrochloride, uses an aqueous hydrochloric acid solution instead of hydrogen chlori...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PAI JAEYOUNG, HAN HYUK HEE, MYUNG JUNG HWAN, KIM JEONGMOO
Format: Patent
Sprache:eng ; kor
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Beschreibung
Zusammenfassung:The present invention provides a method for manufacturing a diisocyanate composition and an optical lens, wherein the diisocyanate composition, in a process of manufacturing diisocyanate from diamine through diamine hydrochloride, uses an aqueous hydrochloric acid solution instead of hydrogen chloride gas and uses a solid triphosgene composition instead of phosgene gas, and thus controls a b* value according to CIE color coordinates in an organic solvent of a triphosgene composition, thereby having excellent yield and quality while reducing environmental problems. 디아민으로부터 디아민 염산염을 거쳐 디이소시아네이트를 제조하는 과정에서, 염화수소 가스 대신 염산 수용액을 이용하고 포스겐 가스 대신 고상의 트리포스겐 조성물을 이용하면서, 트리포스겐 조성물의 유기 용매 중에서의 CIE 색좌표에 따른 b* 값을 조절함으로써, 환경 문제가 적으면서도 수율 및 품질이 우수한 디이소시아네이트 조성물 및 광학 렌즈의 제조방법이 제공된다.