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특허 상세정보

Extracting agents for poly-D(-)-3-hydroxybutyric acid

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C12P-007/62    C12P-007/42    G08G-063/06   
미국특허분류(USC) 435/135 ; 435/146 ; 435/267 ; 528/361
출원번호 US-0370367 (1989-06-22)
우선권정보 AT-0001759 (1988-07-07)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 44  인용 특허 : 9
초록

Use of diols or acetalized triols, di- or tricarboxylic acid esters, mixtures of dicarboxylic acid esters or butyrolactone as extracting agents for obtaining pure polyesters or copolyesters containing 3-hydroxybutyric acid units.

대표
청구항

In a process for the preparation of a polyester or copolyester containing 3-hydroxybutyric acid units by cultivation of a poly-D(-)-3-hydroxybutyric acid producing microorganism in a fermentation medium and subsequent extraction and recovery of the desired product, the improvement which comprises using as an extracting agent a solvent selected from the group consisting of diols and acetalized triols, di- or tricarboxylic acid esters, mixtures of dicarboxylic acid esters, and butyrolactone to obtain said polyester or copolyester in substantially pure form...

이 특허를 인용한 특허 피인용횟수: 44

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