Global Patent Index - EP 1012202 A1

EP 1012202 A1 2000-06-28 - CATALYST SYSTEM FOR PRODUCING POLYALKYLENE CARBONATES

Title (en)

CATALYST SYSTEM FOR PRODUCING POLYALKYLENE CARBONATES

Title (de)

KATALYSATORSYSTEM ZUR HERSTELLUNG VON POLYALKYLENCARBONATEN

Title (fr)

SYSTEME CATALYSEUR POUR PREPARER DES CARBONATES DE POLYALKYLENE

Publication

EP 1012202 A1 (DE)

Application

EP 98949897 A

Priority

  • DE 9802368 W
  • DE 19737547 A

Abstract (en)

[origin: DE19737547A1] The invention relates to a catalyst system consisting of at least two dicarboxylic acids which can be aliphatic, aromatic or a mixture of the two and which can be combined using a divalent inorganic zinc salt. The inventive catalyst system can be used in the co-, ter-, and block-polymerisation of one or several epoxides with carbon dioxide in a continuous or batch operation to achieve higher yields, especially for commercial use. The resulting polymers are free from by-products to a large extent and are 99 % pure.

IPC 1-7 (main, further and additional classification)

C08G 64/34

IPC 8 full level (invention and additional information)

B01J 31/04 (2006.01); B01J 31/26 (2006.01); C08G 64/34 (2006.01); C08G 64/02 (2006.01)

CPC (invention and additional information)

C08G 64/34 (2013.01); B01J 31/04 (2013.01); B01J 31/26 (2013.01); B01J 2231/14 (2013.01); C08G 64/0208 (2013.01)

Citation (search report)

See references of WO 9911694A1

Designated contracting state (EPC)

BE DE ES FR GB NL

EPO simple patent family

DE 19737547 A1 19990304; EP 1012202 A1 20000628; WO 9911694 A1 19990311

INPADOC legal status


2001-09-05 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20000901

2000-06-28 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000313

2000-06-28 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE DE ES FR GB NL