Title:
微細に分散された、デンプンを含有するポリマー分散体
Document Type and Number:
Japanese Patent JP2008545027
Kind Code:
A
Abstract:
Finely divided, starch-containing polymer dispersions obtainable by emulsion copolymerization, with redox initiators, of ethylenically unsaturated monomers from the group consisting of (a) from 45 to 55% by weight of at least one optionally substituted styrene, methyl methacrylate, acrylonitrile and/or methacrylonitrile, (b) from 15 to 29% by weight of at least one C1-C12-alkyl acrylate and/or one C2-C12-alkyl methacrylate and (c) from 0 to 10% by weight of at least one other ethylenically unsaturated copolymerizable monomer in an aqueous medium in the presence of (d) from 15 to 35% by weight of a degraded cationized starch which has a molar mass Mw of from 1000 to 65 000, the sum (a)+(b)+(c)+(d) being 100% and being based on the total solids content, processes for the preparation of such polymer dispersions by emulsion polymerization of the monomers (a), (b) and (c) in an aqueous medium with redox initiators in the presence of (d) cationic starch, and use of the starch-containing polymer dispersions as size for paper, board and cardboard.
Inventors:
Hildegard Stein
Laurent Etru
Laurent Etru
Application Number:
JP2008518799A
Publication Date:
December 11, 2008
Filing Date:
June 23, 2006
Export Citation:
Assignee:
BASF SE
International Classes:
C08L25/14; C08F2/44; C08F251/00; C08L3/02; C08L33/12; C08L33/18; D21H19/20
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Reinhard Einsel