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Title:
CORE-SHELL STRUCTURED SILICONE RUBBER GRAFT POLYMERS, IMPACT-RESISTANT MODIFIED MOLDING COMPOUNDS AND MOLDED BODIES AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO2003066695
Kind Code:
A3
Abstract:
The invention relates to core-shell structured silicone rubber graft polymers that comprise a core a) from a silicium-organic polymer that corresponds to the general formula (R2SiO2/2)x.(RSiO3/2)y.(SiO4/2)z, wherein x = 0 to 99.5 mole %, y = 0.5 to 100 mole %, z = 0 to 50 mole %, wherein R is the same or different and represents alkyl or alkenyl groups having 1 to 6 C atoms, aryl groups or substituted hydrocarbon groups and at last one shell c) from an organic polymer. The silicone rubber graft copolymers are obtained by producing the organic shell c) by radical polymerization at a temperature of not more than 65 DEG C and adding the initiator in at least two portions to the reaction vessel, with a further addition at least 2 minutes after start of the polymerization.

Inventors:
SCHULTES KLAUS (DE)
MUELLER REINER (DE)
HOESS WERNER (DE)
ALBRECHT KLAUS (DE)
Application Number:
PCT/EP2003/000267
Publication Date:
March 04, 2004
Filing Date:
January 14, 2003
Export Citation:
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Assignee:
ROEHM GMBH (DE)
SCHULTES KLAUS (DE)
MUELLER REINER (DE)
HOESS WERNER (DE)
ALBRECHT KLAUS (DE)
International Classes:
C08F283/12; C08F285/00; C08L25/12; C08L33/06; C08L51/08; (IPC1-7): C08F283/12; C08F285/00; C08L51/08; C08L51/04; C08L55/02
Domestic Patent References:
WO2002036683A12002-05-10
WO2002036682A12002-05-10
Foreign References:
US5223586A1993-06-29
US4945124A1990-07-31
US4812515A1989-03-14
US5981659A1999-11-09
EP0246537A21987-11-25
EP0678532A11995-10-25
EP0584363A11994-03-02
EP0534244A11993-03-31
EP0433906A21991-06-26
US6251313B12001-06-26
US4690986A1987-09-01
EP0326038A11989-08-02
US4885209A1989-12-05
EP0430134A21991-06-05
EP0308198A21989-03-22
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