EP 1086147 A1 20010328 - 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
Application
Priority
- US 9908875 W 19990423
- US 7476398 A 19980508
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
IPC 8 full level
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 7/039 (2006.01); G03F 7/26 (2006.01)
CPC (source: EP KR)
C08F 6/02 (2013.01 - EP KR); C08F 12/24 (2013.01 - KR); C08J 3/09 (2013.01 - EP KR); G03F 7/039 (2013.01 - KR); G03F 7/26 (2013.01 - KR); C08J 2325/18 (2013.01 - EP)
Designated contracting state (EPC)
BE DE FR GB IE IT NL
DOCDB simple family (publication)
WO 9958579 A1 19991118; EP 1086147 A1 20010328; EP 1086147 A4 20030205; JP 2002514664 A 20020521; KR 20010043388 A 20010525; TW 530069 B 20030501
DOCDB simple family (application)
US 9908875 W 19990423; EP 99917661 A 19990423; JP 2000548381 A 19990423; KR 20007012410 A 20001107; TW 88107442 A 19990507