Global Patent Index - EP 0979300 A2

EP 0979300 A2 20000216 - ENZYMATIC SYNTHESIS

Title (en)

ENZYMATIC SYNTHESIS

Title (de)

ENZIMATISCHE SYNTHESE VON POLYESTERN MITTELS LIPASE

Title (fr)

SYNTHESE ENZYMATIQUE

Publication

EP 0979300 A2 (EN)

Application

EP 98925849 A

Priority

  • GB 9801658 W
  • GB 9711680 A

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; C08G 63/02; C08G 63/60; C08G 63/82; C08L 67/02; C08L 67/04; C12P 7/62

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 9855642A3

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