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특허 상세정보

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Sheets materials of HB polymers

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) A61M-001/00    B32B-027/08    C08J-005/18   
미국특허분류(USC) 604/327 ; 428/332 ; 428/516 ; 428/518
출원번호 US-0085037 (1987-08-13)
우선권정보 GB-0030324 (1985-12-09); GB-0030325 (1985-12-09); GB-0030326 (1985-12-09); GB-0030327 (1985-12-09); GB-0030328 (1985-12-09); GB-0030329 (1985-12-09)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 72  인용 특허 : 12
초록

HB polymers, such as copolymers of hydroxy butyric acid and hydroxy valeric acid, are provided as melt extruded films having a thickness of 5 to 200 m

대표
청구항
▼

In a sheet material comprising a film of hydroxy butyric acid polymer composition wherein the hydroxy butyric acid polymer is a biodegradable polymer formed of recurring units of which 50 to 100% molar are units of formula 1 －OCnH2nCO－ where n is 3, 4 or 5 and the hydroxy butyric acid polymer composition comprises 50 to 100% of the hydroxy butyric acid polymer and 0 to 50% diluent additive, wherein the improvement comprises that (a) the film is a film that has been made by melt extrusion to a thickness of 5 to 200 m30 to 200 g/25 um.m2.day at 38°C. and h...

이 특허에 인용된 특허 (12)

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