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특허 상세정보

MyON담기
내보내기 페이스북 공유 카카오톡 공유

Polyurethane elastomers

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C09J-004/00    A61K-047/00    A61K-009/00   
미국특허분류(USC) 156/331.7; 514/772.1; 424/400
출원번호 US-0605689 (2012-09-06)
등록번호 US-8361273 (2013-01-29)
우선권정보 GB-0613638.6 (2006-07-08)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 1  인용 특허 : 263
초록

This disclosure relates to a linear polymer obtained by reacting a polyethylene glycol, a polypropylene glycol; a diol; and a diisocyanate, as well as a controlled release composition containing the linear polymer together with an active agent. The active agent can have a molecular weight of 200 g/mol to 20,000 g/mol.

대표
청구항
▼

1. A controlled release composition, comprising: (I) a water-swellable linear polymer obtained by reacting: (i) a polyethylene glycol; (ii) a polypropylene glycol; (iii) a diol; and (iv) a diisocyanate; and (II) a pharmaceutically active agent; wherein the molar ratio of the components (i), (ii), (iii) and (iv) is in the range 0.01-1 to 0.01-1 to 1 to 1.02-3, respectively. 2. The composition of claim 1, wherein the polyethylene glycol is a linear polyethylene glycol having a molecular weight of 400 g/mol to 2000 g/mol. 3. The composition of claim 1, wher...

이 특허에 인용된 특허 (263)

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