Global Patent Index - EP 1242511 A1

EP 1242511 A1 2002-09-25 - LATICES FROM EMULSIFIED HYDROCARBON RUBBER SOLUTIONS BY MEMBRANE SEPARATION

Title (en)

LATICES FROM EMULSIFIED HYDROCARBON RUBBER SOLUTIONS BY MEMBRANE SEPARATION

Title (de)

HERSTELLUNG VON LATICES AUS EMULGIERTEN KOHLENWASSERSTOFF- KAUTSCHUKLÖSUNGEN DURCH MEMBRANTRENNUNG

Title (fr)

LATEX OBTENUS PAR SEPARATION MEMBRANAIRE DE SOLUTIONS D'ELASTOMERES HYDROCARBONES EMULSIONNES

Publication

EP 1242511 A1 (EN)

Application

EP 99965247 A

Priority

US 9929578 W

Abstract (en)

[origin: WO0144350A1] Rubbery polymers in hydrocarbon solutions are emulsified in aqueous liquids and converted to latices by partitioning the emulsion through a membrane of selective permeability to the hydrocarbon solvent relative to both water and the polymer, thereby removing the hydrocarbon solvent from the emulsion. The foaming that is often associated with the removing hydrocarbon solvent from aqueous emulsions by conventional means is thus avoided. Membrane partitioning mechanisms that are useful for this application include those involving both nonporous and microporous membranes, those passing the solvent both as a liquid and as a gas, those drawing off the permeate as both a liquid and a gas, and various combinations of these methods.

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

C08J 3/07; C08L 21/00

IPC 8 full level (invention and additional information)

B01D 61/36 (2006.01); B01D 61/38 (2006.01); B01D 71/32 (2006.01); B01D 71/36 (2006.01); B01D 71/64 (2006.01); B01D 71/70 (2006.01); C08C 2/00 (2006.01); C08J 3/07 (2006.01); C08L 21/00 (2006.01)

CPC (invention and additional information)

C08J 3/07 (2013.01); B01D 61/246 (2013.01); B01D 61/362 (2013.01); B01D 61/364 (2013.01); B01D 61/38 (2013.01); C08J 2321/00 (2013.01)

Citation (search report)

See references of WO 0144350A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 0144350 A1 20010621; AU 3120400 A 20010625; EP 1242511 A1 20020925; JP 2003517073 A 20030520

INPADOC legal status


2005-07-20 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20050112

2002-09-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020606

2002-09-25 [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

2002-09-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL PAYMENT 20020606;LT PAYMENT 20020606;LV PAYMENT 20020606;MK PAYMENT 20020606;RO PAYMENT 20020606;SI PAYMENT 20020606