Title:
改良された特性安定性を有するポリマー組成物
Document Type and Number:
Japanese Patent JP2004537634
Kind Code:
A
Abstract:
A polymer composition containing (I) a graft rubber polymerizate obtained by emulsion polymerization of styrene and acrylonitrile, in the presence of a butadiene polymerization latex (A), (II) a graft rubber polymerizate of higher particle size, (III) a rubber-free copolymerizate where the butadiene polymerization latex is obtained by seed polymerization and a butadiene latex polymerizate (B) obtained by agglomeration is new. A polymer composition containing : (I) at least one graft rubber polymerizate obtained by emulsion polymerization of styrene and acrylonitrile in 95:5 to 50:50 wt. ratio where the styrene and/or acrylonitrile can be completely or partially replaced by alpha-methylstyrene, methyl methacrylate, or N-phenylmaleimide or their mixtures, in the presence of a butadiene polymerization latex (A) of mean particle diameter d50 = 80-220 nm; (II) at least one graft rubber polymerizate obtained by emulsion polymerization of styrene and acrylonitrile in 95:5 to 50:50 wt. ratio where the styrene and/or acrylonitrile can be completely or partially replaced by alpha-methylstyrene, methyl methacrylate, or N-phenylmaleimide or their mixtures, in the presence of a butadiene polymerization latex (A) of mean particle diameter d50 = 350-650 nm; (III) at least one rubber-free copolymerizate from styrene and acrylonitrile in 95:5 to 50:50 wt. ratio where the styrene and/or acrylonitrile can be completely or partially replaced by alpha-methylstyrene, methyl methacrylate, or N-phenylmaleimide or their mixtures, where the butadiene polymerization latex is obtained by seed polymerization using butadiene polymerizate/seed latex of mean particle diameter 10-100 nm and the butadiene latex polymerizate (B) is obtained by agglomeration using butadiene polymerizate latex (A) as starting latex. An Independent claim is also included for preparation of the polymer composition as described above.
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Inventors:
Herbert Eichenauer
Vera Buchholz
Echult Wentz
Vera Buchholz
Echult Wentz
Application Number:
JP2003519163A
Publication Date:
December 16, 2004
Filing Date:
July 22, 2002
Export Citation:
Assignee:
Bayer Aktiengesellschaft
International Classes:
C08F2/24; C08F2/44; C08F6/22; C08F279/02; C08F279/04; C08F285/00; C08L25/12; C08L35/00; C08L51/04; C08L55/02; C08L67/00; C08L69/00; (IPC1-7): C08F2/44; C08F2/24; C08F6/22; C08F279/02; C08L51/04; C08L67/00; C08L69/00
Attorney, Agent or Firm:
Osamu Kawamiya
Kitahara Yasuhiro
Kitahara Yasuhiro