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Lightly cross-linked polyurethane hydrogels based on poly(alkylene ether) polyols

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08G-018/66    C08G-018/14   
미국특허분류(USC) 260/775 ; AM ; 260/25 ; AD ; 260/25 ; AY ; 260/775 ; AP
출원번호 US-0480568 (1974-06-18)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 66  인용 특허 : 0
초록

Polyurethane hydrogels of high water swellability comprising lightly crosslinked polymers of isocyanate terminated prepolymers which are the reaction production of (i) poly(alkyleneoxy) polyols with (ii) organic diisocyanates that has been lightly crosslinked with (iii) water or an organic polyamine.

대표
청구항
▼

A water swellable, lightly crosslinked, hydrogel polymer of the isocyanato terminated prepolymer comprising the reaction product of: i. a poly(alkyleneoxy) polyol having an average molecular weight up to about 25,000 wherein the alkyleneoxy group contains from two to four carbon atoms, and ii. an organic diisocyanate, said prepolymer lightly crosslinked with an equivalent amount of a crosslinking agent of the group: iii. water or organic polyamine; wherein said poly(alkyleneoxy) polyol is a mixture of a major amount of a poly(ethyleneoxy) diol having an ...

이 특허를 인용한 특허 피인용횟수: 66

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