EP 0868471 A1 19981007 - HOT SHAPING POLYHYDROXYALKANOATE POLYMERS
Title (en)
HOT SHAPING POLYHYDROXYALKANOATE POLYMERS
Title (de)
WARM-WARM-FORMGEBUNG VON POLYHYDROXYALKANOATEN
Title (fr)
FA ONNAGE A CHAUD DE POLYMERES DE POLYHYDROXYALCANOATES
Publication
Application
Priority
- GB 9526388 A 19951222
- US 9620545 W 19961218
Abstract (en)
[origin: WO9723549A1] This invention relates to processes for producing a shaped object of polyhydroxyalkanoate (PHA) that makes it possible to omit the preliminary extrusion-compounding step, thus saving expense and limiting loss of molecular weight. The process comprises producing a biomass containing particles of PHA and non-PHA cell material (NPCM), separating the NPCM, suspending the PHA particles in water, agglomerating the suspended PHA particles to a suitable weight average particle diameter, separating the agglomerated PHA particles from the suspension, drying the agglomerated PHA particles, and hot shaping the dry, agglomerated PHA particles. In one embodiment, the weight average particle diameter is 50 mu m to 5000 mu m. In another embodiment, a plasticiser is added to the agglomerated PHA particles.
IPC 1-7
IPC 8 full level
C08J 3/16 (2006.01); C08G 63/06 (2006.01); C08J 3/12 (2006.01); C08J 5/00 (2006.01)
CPC (source: EP)
C08J 3/12 (2013.01); C08J 5/00 (2013.01); C08J 2367/04 (2013.01)
Citation (search report)
See references of WO 9723549A1
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 9723549 A1 19970703; AU 1346697 A 19970717; EP 0868471 A1 19981007; GB 9526388 D0 19960221; JP 2000502399 A 20000229; MX 9805097 A 19981031
DOCDB simple family (application)
US 9620545 W 19961218; AU 1346697 A 19961218; EP 96944999 A 19961218; GB 9526388 A 19951222; JP 52384897 A 19961218; MX 9805097 A 19980622