Solvent extraction of polyhydroxy-alkanoates from biomass facilitated by the use of marginal nonsolvent
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08K-005/16
C08G-063/06
C12P-007/62
출원번호
US-0802969
(1997-02-21)
발명자
/ 주소
Noda Isao
출원인 / 주소
The Proctor & Gamble Company
대리인 / 주소
Corstanje
인용정보
피인용 횟수 :
23인용 특허 :
10
초록▼
The present invention relates to a process for separating polyhydroxyalkanoate (PHA) from a biomass comprising the PHA, the process comprising: a) treating the biomass with a PHA solvent and a marginal nonsolvent for PHA; b) removing any insoluble biomass, thereby leaving behind a solution of PHA an
The present invention relates to a process for separating polyhydroxyalkanoate (PHA) from a biomass comprising the PHA, the process comprising: a) treating the biomass with a PHA solvent and a marginal nonsolvent for PHA; b) removing any insoluble biomass, thereby leaving behind a solution of PHA and marginal nonsolvent for PHA; and c) removing the PHA solvent from the solution, thereby resulting in a suspension of precipitated PHA in the marginal nonsolvent for PHA. Optionally, the process further comprises removing the marginal nonsolvent for PHA, thereby leaving behind the PHA. The present invention further relates to the suspension and the PHA produced by the process.
대표청구항▼
[ What is claimed is:] [1.] A process for separating polyhydroxyalkanoate from a biomass comprising the polyhydroxyalkanoate, the process comprising:a) treating the biomass with a PHA solvent and a marginal nonsolvent for PHA;b) removing any insoluble biomass, thereby leaving behind a solution of po
[ What is claimed is:] [1.] A process for separating polyhydroxyalkanoate from a biomass comprising the polyhydroxyalkanoate, the process comprising:a) treating the biomass with a PHA solvent and a marginal nonsolvent for PHA;b) removing any insoluble biomass, thereby leaving behind a solution of polyhydroxyalkanoate and marginal nonsolvent for PHA; andc) removing the PHA solvent from the solution, thereby resulting in a suspension of precipitated polyhydroxyalkanoate in the marginal nonsolvent for PHA;wherein said PHA solvent is acetone, benzene, butyl acetate, butyl propionate, liquified carbon dioxide, chloroform, 1,2-dichloroethane, diethyl carbonate, diethylformamide, dimethyl carbonate, dimethyl sulfoxide, dimethylformamide, ethyl acetate, methyl acetate, methyl ethyl ketone, 1,1,2,2-tetrachloroethane, 1,1,2-trichloroethane, 1,2,3-trichloropropane, toluene, xylene, or mixtures thereof.
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이 특허에 인용된 특허 (10)
Traussnig Heinz (Frohnleiten AIX) Kloimstein Engelbert (Eferding AIX) Kroath Hans (Linz AIX) Estermann Robert (Linz AIX), Extracting agents for poly-D(-)-3-hydroxybutyric acid.
Vanlautem Nol (Wavre BEX) Gilain Jacques (Brussels BEX), Process for extracting poly-beta-hydroxybutyrates by means of a solvent from an aqueous suspension of microorganisms.
Blauhut Wilfried (Linz ATX) Gierlinger Wolfgang (Linz ATX) Strempfl Friedrich (Linz ATX), Process for obtaining a polyhydroxyalkanoate from the cell material of a microogranism.
Hecht, Stacie Ellen; Niehoff, Raymond Louis; Narasimhan, Karunakaran; Neal, Charles William; Forshey, Paul Arlen; Phan, Dean Van; Brooker, Anju Deepali Massey; Combs, Katherine Helen, Extracting biopolymers from a biomass using ionic liquids.
Kurdikar Devdatt L. ; Strauser Fred E. ; Solodar A. John ; Paster Mark D. ; Asrar Jawed, Methods of PHA extraction and recovery using non-halogenated solvents.
Zhao, Jean Jiangun; Noda, Isao; Gilbertson, Gary Wayne; McAvoy, Drew Clifton; Gray, Brian Francis; Melik, David Harry, Molded or extruded articles comprising polyhydroxyalkanoate copolymer compositions having short annealing cycle times.
Narasimhan,Karunakaran; Noda,Isao; Satkowski,Michael Matthew; Cearley,Angella Christine; Gibson,Michael Steven; Welling,Stanley James, Process for the extraction of polyhydroxyalkanoates from biomass.
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