EP 0866830 A1 19980930 - POLYESTER PARTICLES
Title (en)
POLYESTER PARTICLES
Title (de)
POLYESTERTEILCHEN
Title (fr)
PARTICULES DE POLYESTER
Publication
Application
Priority
- GB 9525932 A 19951216
- US 9620016 W 19961213
Abstract (en)
[origin: WO9722654A1] This invention relates to a process for producing polyhydroxyalkanoate (PHA) that overcomes a problem encountered when seeking to separate PHA particles without centrifugation. The process comprises producing a biomass containing PHA particles and non-PHA cell material (NPCM), solubilising the NPCM, oxidizing the resulting product mixture to further solubilise NPCM, adding a water soluble surfactant to produce a suspension, and heating the suspension below the melting point of the PHA to agglomerate the PHA particles to a suitable weight average diameter. In one emdobiment, the surfactant is a monomeric water soluble surfactant. In another embodiment, the weight average particle diameter is 200 mu m to 500 mu m.
IPC 1-7
IPC 8 full level
C12P 7/62 (2006.01); C08G 63/06 (2006.01); C08G 63/88 (2006.01); C08J 3/12 (2006.01); C08J 3/16 (2006.01); C12R 1/05 (2006.01)
CPC (source: EP)
C08J 3/12 (2013.01); C08J 2367/04 (2013.01)
Citation (search report)
See references of WO 9722654A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9722654 A1 19970626; AU 1462697 A 19970714; EP 0866830 A1 19980930; GB 9525932 D0 19960221; JP 2000503046 A 20000314; MX 9804818 A 19981031
DOCDB simple family (application)
US 9620016 W 19961213; AU 1462697 A 19961213; EP 96945205 A 19961213; GB 9525932 A 19951216; JP 52294997 A 19961213; MX 9804818 A 19980615