|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||528/480; 426/623; 426/635; 528/191; 528/495; 528/499|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 18 인용 특허 : 6|
The present invention provides a method for conveniently obtaining a biodegradable polyhydroxyalkanoate by a solvent extraction method. A method for producing a polyhydroxyalkanoate crystal comprises precipitating a polyhydroxyalkanoate crystal using a monohydric alcohol having 4 to 10 carbon atoms as a extraction solvent, keeping a poly...
The invention claimed is: 1. A method for producing a polyhydroxyalkanoate crystal which comprises extracting a polyhydroxyalkanoate using a monohydric alcohol having 4 to 10 carbon atoms as an extraction solvent, keeping a polyhydroxyalkanoate solution containing 0.1 to 10% by weight of water relative to the total amount of the solution warm at 70째 C. or higher, and cooling the solution to below 70째 C. to precipitate a polyhydroxyalkanoate crystal. 2. The method for producing a polyhydroxyalkanoate crystal according to claim 1, wherein the monohydric...