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    • 44. 发明申请
    • METHOD FOR THE REDUCTION OF ODOUR EMISSIONS OF AQUEOUS PROTECTIVE COLLOID-STABILISED AROMATIC VINYL-1,3-DIENE-COPOLYMER DISPERSIONS
    • 法降低发臭水性保护胶体稳定的乙烯基芳族-1,3-二烯共聚物分散体
    • WO00031147A1
    • 2000-06-02
    • PCT/EP1999/007708
    • 1999-10-14
    • C08C1/04C08F2/44C08F6/00C08F212/04C08K5/10
    • C08F212/04C08C1/04C08F6/006C08K5/10C08L25/10
    • The invention relates to a method for reducing odour emissions of aqueous aromatic vinyl-1,3-diene-copolymer dispersions which have been stabilised with a protective colloid. The invention also relates to redispersion powders obtained by drying said dispersions. This is achieved by emulsion polymerisation of a mixture containing at least one aromatic vinyl and at least one 1,3-diene in the presence of one or more protective colloids and by optionally drying the polymer dispersion obtained thereby. The invention is characterised in that 0.01 to 15.0 wt. % of one or more monomers selected from the group of branched or unbranched alkyl esters containing 1 to 8 carbon atoms in the alkyl radical of monounsaturated mono- or dicarboxylic acids are added at the end of the polymerisation when the total content of the aqueous polymer dispersion containing free monomers ranges from > 0 to
    • 本发明提供一种方法用于减少的水性保护胶体稳定化的乙烯基芳族-1,3-二烯共聚物分散体和由至少一种乙烯基芳族和的混合物的乳液聚合含有由干燥物得到的再分散粉末的气味排放至少一种1,3-二烯中的一个或存在 多种保护性胶体,并且在适当时,干燥所得到的聚合物分散体,其特征在于,朝向所述聚合,在水性聚合物分散体的总含量在上述范围内,以 0至15.0的端部。或 选自具有在烷基中的单不饱和单或二羧酸的碳原子数1〜8的支链或无支链烷基的多种单体的添加,其特征在于,以重量%中的信息为基础,在该分散体中的聚合物含量每一种情况下。