Global Patent Index - EP 1090436 A1

EP 1090436 A1 2001-04-11 - PROCESS OF MAKING A COMPOSITE MENBRANE

Title (en)

PROCESS OF MAKING A COMPOSITE MENBRANE

Title (de)

VERFAHREN ZUR HERSTELLUNG EINER KOMPOSITMEMBRANE

Title (fr)

PROCEDE DE FABRICATION D'UNE MEMBRANE COMPOSITE

Publication

EP 1090436 A1 (EN)

Application

EP 99917633 A

Priority

US 9908627 W

Abstract (en)

[origin: WO0063995A1] The present invention relates to methods of fabricating composite membranes wherein at least one of the components is initially provided in the form of a precursor. The composite material comprising the precursor is processed to transform the precursor and obtain a membrane having a desired property. Including a thermoplastic precursor to a desired component, which itself is less thermoplastic, permits separate pieces of the membrane to be joined by welding or other thermal processes relying on the meltability of the components to achieve a bond. The invention also encompasses fabricating a reinforced ion conducting membrane by melting and mixing a non ion-conducting precursor to an ion-conducting polymer with an essentially inert polymer. The composite material is then processed to transform the non-ion conducting polymer into the ion-conducting form. The mixing of the precursor and the inert polymer may also be achieved by co-precipitating a solution of the precursor and a suspension of the inert polymer; impregnating the precursor onto the walls of the pores of a porous, essentially inert polymer; filling the pores of a porous, essentially inert polymer with a solution of comprising a non-ion conducting precursor to an ion conducting precursor and evacuating the solvent to substantially fill the pores of a porous, essentially inert polymer with the precursor; or melting the precursor, filling the pores of a porous essentially inert polymer with the melted precursor and cooling the precursor to form an essentially pore free composite membrane.

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

H01M 8/10; C08J 5/22; B01D 69/12

IPC 8 full level (invention and additional information)

B01D 67/00 (2006.01); B01D 69/14 (2006.01); B01D 71/28 (2006.01); B01D 71/32 (2006.01); B01D 71/36 (2006.01); B01D 71/80 (2006.01); C08J 5/22 (2006.01); H01M 8/10 (2006.01)

CPC (invention and additional information)

B01D 67/0088 (2013.01); B01D 67/0093 (2013.01); B01D 69/141 (2013.01); B01D 71/28 (2013.01); B01D 71/32 (2013.01); B01D 71/36 (2013.01); B01D 71/80 (2013.01); C08J 5/2281 (2013.01); H01M 8/1023 (2013.01); H01M 8/1039 (2013.01); H01M 8/1044 (2013.01); H01M 8/1051 (2013.01); H01M 8/106 (2013.01); H01M 8/1072 (2013.01); C08J 2327/18 (2013.01); C08J 2381/08 (2013.01); Y02P 70/56 (2015.11)

Designated contracting state (EPC)

DE ES FR GB IT SE

EPO simple patent family

WO 0063995 A1 20001026; AU 3570699 A 20001102; EP 1090436 A1 20010411

INPADOC legal status


2006-07-26 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20060126

2002-10-09 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020823

2001-04-11 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20010122

2001-04-11 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT SE