EP 1265952 A1 20021218 - MICROPOROUS POLYMER MATRICES
Title (en)
MICROPOROUS POLYMER MATRICES
Title (de)
MIKROPORÖSE POLYMERMATRIZEN
Title (fr)
MATRICES POLYMERES MICROPOREUSES
Publication
Application
Priority
- GB 0004472 W 20001124
- GB 9927850 A 19991126
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
IPC 8 full level
A61L 27/18 (2006.01); A61L 27/56 (2006.01); C08J 9/28 (2006.01); C08G 63/08 (2006.01)
CPC (source: EP)
A61L 27/18 (2013.01); A61L 27/56 (2013.01); C08J 9/28 (2013.01); C08G 63/08 (2013.01); C08J 2201/0546 (2013.01); C08J 2367/04 (2013.01)
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
DOCDB simple family (publication)
WO 0138428 A1 20010531; AU 1535001 A 20010604; EP 1265952 A1 20021218; GB 9927850 D0 20000126
DOCDB simple family (application)
GB 0004472 W 20001124; AU 1535001 A 20001124; EP 00977714 A 20001124; GB 9927850 A 19991126