Global Patent Index - EP 1086147 A1

EP 1086147 A1 2001-03-28 - PROCESS FOR PRODUCING PURIFIED SOLUTIONS OF BLOCKED POLYHYDROXYSTYRENE RESIN

Title (en)

PROCESS FOR PRODUCING PURIFIED SOLUTIONS OF BLOCKED POLYHYDROXYSTYRENE RESIN

Title (de)

VERFAHREN ZUR HERSTELLUNG VON GEREINIGTEN LÖSUNGEN VON POLYHYDROSTYROL-BLOCKHARZEN

Title (fr)

PROCEDE DE PRODUCTION DE SOLUTIONS PURIFIEES DE RESINE POLYHYDROXYSTYRENE INHIBEE

Publication

EP 1086147 A1 (EN)

Application

EP 99917661 A

Priority

  • US 9908875 W
  • US 7476398 A

Abstract (en)

[origin: WO9958579A1] A process for making purified cross-linked polyhydroxystyrene resin, comprising the steps of: (1) forming an impure reaction solution comprising blocked polyhydroxystyrene resin and acidic catalyst in a reaction solvent; (2) adding amine, water, at least one hydrocarbon solvent, and at least one photoresist solvent, thereby forming and aqueous phase and an organic phase, said aqueous phase comprising water and at least one salt of the amine/acidic catalyst and the organic phase comprising the reaction solvent, the hydrocarbon solvent, the photoresist solvent and the blocked polyhydroxystyrene resin; (3) separating the aqueous phase from the organic phase; and (4) removing the hydrocarbon solvent and reaction solvent from the organic phase, thereby forming a purified solution of the blocked polyhydroxystyrene resin in the photoresist solvent.

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

C08F 6/00

IPC 8 full level (invention and additional information)

G03F 7/039 (2006.01); C08F 6/00 (2006.01); C08F 6/02 (2006.01); C08F 8/00 (2006.01); C08F 12/24 (2006.01); C08J 3/09 (2006.01); G03F 7/26 (2006.01)

CPC (invention and additional information)

C08J 3/09 (2013.01); C08F 6/02 (2013.01); C08J 2325/18 (2013.01)

Combination set (CPC)

C08F 6/02 + C08L 25/18

Designated contracting state (EPC)

BE DE FR GB IE IT NL

EPO simple patent family

WO 9958579 A1 19991118; EP 1086147 A1 20010328; EP 1086147 A4 20030205; JP 2002514664 A 20020521; TW 530069 B 20030501

INPADOC legal status


2007-01-10 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20060707

2003-02-05 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20021220

2001-03-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001208

2001-03-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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