Global Patent Index - EP 1265952 A1

EP 1265952 A1 2002-12-18 - MICROPOROUS POLYMER MATRICES

Title (en)

MICROPOROUS POLYMER MATRICES

Title (de)

MIKROPORÖSE POLYMERMATRIZEN

Title (fr)

MATRICES POLYMERES MICROPOREUSES

Publication

EP 1265952 A1 (EN)

Application

EP 00977714 A

Priority

  • GB 0004472 W
  • GB 9927850 A

Abstract (en)

[origin: WO0138428A1] A method for the manufacture of a microporous polymer matrix comprises the steps of: a) introducing into a mould a solution of polymer in a solvent, and b) adding a precipitant to the solution so as to cause precipitation of the polymer from the solution in a form which retains the shape of the mould upon removal from the mould. Useful polymers for carrying out the method of the invention are those which show a tendency to crystallise from solution on solvent extraction. These include poly(L.lactide) or copolymers of poly(L.lactide) and a poly ( alpha -hydroxy acid) which will dissolve in acetone and subsequently crystallise upon solvent extraction. The preferred polymer is poly( epsilon -caprolactone). The precipitant is preferably a solvent in which the polymer is substantially insoluble. Preferred precipitants are polar solvents such as alcohols, in particular methanol.

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

C08J 9/28; A61L 27/18

IPC 8 full level (invention and additional information)

A61L 27/18 (2006.01); A61L 27/56 (2006.01); C08J 9/28 (2006.01); C08G 63/08 (2006.01)

CPC (invention and additional information)

C08J 9/28 (2013.01); A61L 27/18 (2013.01); A61L 27/56 (2013.01); C08G 63/08 (2013.01); C08J 2201/0546 (2013.01); C08J 2367/04 (2013.01)

Combination set (CPC)

A61L 27/18 + C08L 67/04

Citation (search report)

See references of WO 0138428A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0138428 A1 20010531; AU 1535001 A 20010604; EP 1265952 A1 20021218; GB 9927850 D0 20000126

INPADOC legal status


2003-12-10 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030603

2002-12-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020626

2002-12-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-12-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI