EP 0979300 A2 20000216 - ENZYMATIC SYNTHESIS
Title (en)
ENZYMATIC SYNTHESIS
Title (de)
ENZIMATISCHE SYNTHESE VON POLYESTERN MITTELS LIPASE
Title (fr)
SYNTHESE ENZYMATIQUE
Publication
Application
Priority
- GB 9801658 W 19980605
- GB 9711680 A 19970605
Abstract (en)
[origin: WO9855642A2] A process for producing a polyester comprising as repeated units: (i) residues of at least one aliphatic hydroxycarboxylic acid or a carboxylic acid derivative thereof; or (ii) residues of (a) at least one aliphatic dicarboxylic acid or a carboxylic acid derivative thereof, (b) at least one aliphatic diol or polyol, and optionally (c) at least one aliphatic hydroxycarboxylic acid or a carboxylic acid derivative thereof; which process comprises reacting the components defined in (i) or components defined in (ii) in the presence of a lipase and optionally in the presence of water such that the molar ratio of acid groups to hydroxyl groups in the reactants is 1:1 to 1:1.1 and wherein bound enzyme is removed from the reaction mixture and is then used in a further polymerisation of components defined in (i) or (ii).
IPC 1-7
C12P 7/44; C12P 7/62; C08L 67/02; C08L 67/04; C08G 63/02; C08G 63/60; C08G 63/82
IPC 8 full level
C08G 18/42 (2006.01); C08G 63/60 (2006.01); C08G 63/82 (2006.01); C12P 7/62 (2006.01)
CPC (source: EP)
C08G 18/42 (2013.01); C08G 18/4238 (2013.01); C08G 63/60 (2013.01); C08G 63/82 (2013.01); C12P 7/62 (2013.01); C12P 7/625 (2013.01)
Citation (search report)
See references of WO 9855642A2
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9855642 A2 19981210; WO 9855642 A3 19990304; EP 0979300 A2 20000216; GB 9711680 D0 19970806
DOCDB simple family (application)
GB 9801658 W 19980605; EP 98925849 A 19980605; GB 9711680 A 19970605