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    • 10. 发明授权
    • Process for the production of aqueous binder latices
    • 生产含水粘合剂胶乳的方法
    • US07888439B2
    • 2011-02-15
    • US12532730
    • 2008-04-07
    • Tanja RenkesFrank TessariMatthieu Barrere
    • Tanja RenkesFrank TessariMatthieu Barrere
    • C08F265/00C08F291/00C08F2/22C08F265/02C08L51/00C09D151/00
    • C08F2/22C08F2/001C08F220/14C08F257/02C08F265/00C08F265/04C08F291/00C08L51/003C09D151/003C08L2666/02C08F2220/1825C08F220/20C08F220/06C08F220/40C08F2220/325C08F212/08
    • A process for the production of aqueous binder latices by multistage emulsion polymerization in the aqueous phase, comprising the successive steps: 1) free-radical polymerization of a monomer mixture A comprising acidic monomers in a proportion corresponding to an acid value of 10 to 100 mg of KOH/g and olefinically polyunsaturated monomers in a proportion of 0.5 to 5 wt %, 2) neutralization of acid groups of the polymer formed in process step 1) and 3) free-radical polymerization of at least one monomer mixture B comprising acidic monomers in a proportion corresponding to an acid value of mixture(s) B of 0 to below 5 mg of KOH/g, hydroxyl-functional monomers in a proportion corresponding to a hydroxyl value of mixture(s) B of 0 to below 5 mg of KOH/g and olefinically polyunsaturated monomers in a proportion of 0.5 to 5 wt %, wherein the monomer composition of mixtures A and B is selected in such a manner that the calculated glass transition temperature (Tg) of a copolymer composed of a combination of only the olefinically monounsaturated monomers of mixtures A and B is in the range from 30 to 100° C., wherein the ratio by weight of mixture A to the at least one mixture B is from 15:85 to 85:15 and wherein neutralization is not begun in process step 2) until at least 90 wt. % of the monomers of mixture A have been polymerized to completion.
    • 一种在水相中通过多级乳液聚合制备含水粘合剂胶乳的方法,包括以下连续步骤:1)包含酸性单体的单体混合物A的自由基聚合,其比例对应于酸值为10至100mg 的KOH / g和烯属多不饱和单体的比例为0.5〜5重量%,2)中和工艺步骤1)中形成的聚合物的酸基和3)至少一种包含酸性单体的单体混合物B的自由基聚合 以对应于0至低于5mg KOH / g的混合物B的酸值的比例,羟基官能单体的比例对应于混合物B的羟基值为0至低于5mg KOH / g和烯属多不饱和单体的比例为0.5-5wt%,其中混合物A和B的单体组成以这样的方式选择,即所计算的共聚物玻璃化转变温度(Tg)由 混合物A和B仅烯烃单不饱和单体的组合在30至100℃的范围内,其中混合物A与至少一种混合物B的重量比为15:85至85:15, 其中在工艺步骤2)中不开始中和,直到至少90wt。 混合物A的单体的%已经聚合完成。