The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2006
Filed:
Nov. 19, 2004
Koichi Kinoshita, Kakogawa, JP;
Fumio Osakada, Okayama, JP;
Yasuyoshi Ueda, Himeji, JP;
Karunakaran Narasimhan, West Chester, OH (US);
Angella Christine Cearley, Hamilton, OH (US);
Kenneth Yee, Cincinnati, OH (US);
Isao Noda, Fairfield, OH (US);
Koichi Kinoshita, Kakogawa, JP;
Fumio Osakada, Okayama, JP;
Yasuyoshi Ueda, Himeji, JP;
Karunakaran Narasimhan, West Chester, OH (US);
Angella Christine Cearley, Hamilton, OH (US);
Kenneth Yee, Cincinnati, OH (US);
Isao Noda, Fairfield, OH (US);
Kaneka Corporation, Osaka, JP;
Procter & Gamble Company, Cincinnati, OH (US);
Abstract
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 polyhydroxyalkanoate solution containing 0.1 to 10% by weight of water relative to the total amount of the solution warm at 70° C. or higher, and cooling the solution to below 70° C.