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    • 6. 发明申请
    • Method for producing stable aqueous polymer dispersions based on conjugated alphatic dienes and vinyl aromatic compounds
    • 基于共轭二烯和乙烯基芳族化合物制备稳定的聚合物水分散体的方法
    • US20060148981A1
    • 2006-07-06
    • US10541206
    • 2003-12-24
    • Jurgen Schmidt-ThummesJurgen HartmannChung-Ji Tschang
    • Jurgen Schmidt-ThummesJurgen HartmannChung-Ji Tschang
    • C08F2/26
    • C08F236/04C08F212/04C08F257/02C08F2/24
    • The present invention provides a process for preparing a stable aqueous copolymer dispersion by free-radically initiated aqueous emulsion polymerization of a) from 19.9 to 80 parts by weight of conjugated aliphatic dienes [monomers a)], b) from 19.9 to 80 parts by weight of vinylaromatic compounds [monomers b)], c) from 0.1 to 10 parts by weight of ethylenically unsaturated carboxylic acids and/or dicarboxylic acids [monomers c)], d) from 0 to 20 parts by weight of ethylenically unsaturated carbonitriles [monomers d)], and e) from 0 to 20 parts by weight of copolymerizable compounds other than monomers b) [monomers e)], the total amount of ethylenically unsaturated monomers a) to e) being 100 parts by weight, in the presence of water and from 0.1 to 5 parts by weight, based on the total monomer amount, of emulsifiers comprising f) sulfuric monoesters of ethoxylated fatty acid alcohols and/or g) salts of esters and monoesters of alkylpolyoxyethylenesulfosuccinates, from 15 to 85% by weight of the total emulsifiers used being added within the time taken to reach up to 40% of the total conversion of the monomers a) to e), and from 1 to 50% of the carboxylic acid groups deriving from the monomers c) being neutralized by addition of base.
    • 本发明提供了一种通过自由基引发的水乳液聚合制备稳定的含水共聚物分散体的方法,a)从19.9至80重量份的共轭脂族二烯[单体a]],b)19.9至80重量份 的乙烯基芳族化合物[单体b)],c)0.1至10重量份的烯属不饱和羧酸和/或二羧酸[单体c]],d)0至20重量份的烯键式不饱和碳原子[单体d )]和e)0〜20重量份的可与单体不同的共聚合物b)[单体e]],烯属不饱和单体a)至e)的总量为100重量份,在水存在下 和基于总单体量的0.1至5重量份的乳化剂,其包含f)乙氧基化脂肪酸醇的硫酸单酯和/或g)烷基聚氧乙基磺基琥珀酸酯和单酯的盐,其为15至85重量% 使用的总乳化剂的总量在所需时间内加入达到单体a)至e)的总转化率的40%,以及1至50%来源于单体的羧酸基团c)被中和 通过添加基础。