Preparing polymer dispersion foams
    24.
    发明授权
    Preparing polymer dispersion foams 失效
    制备聚合物分散体泡沫

    公开(公告)号:US06051616A

    公开(公告)日:2000-04-18

    申请号:US218152

    申请日:1998-12-22

    CPC classification number: C08C1/065

    Abstract: The present invention relates to a process for preparing a polymer dispersion foam L, where:a) a mixture M which comprises at least one conjugated diene monomer A and at least one ethylenically unsaturated comonomer B is polymerized by free-radical aqueous emulsion polymerization in the presence of at least one emulsifier to give a fine polymer dispersion P,b) the fine polymer dispersion P is pressure-agglomerated to give a coarse polymer dispersion G,c) the polymer dispersion G is concentrated, if desired, and is mixed, if desired, with a reinforcer dispersion H, andd) the dispersion from c) is foamed to give a polymer dispersion foam L,which comprises adjusting the average particle size and the particle size distribution of G by varying a parameter selected from:I) the solids content of P,II) the agglomeration temperature in step b),III) the agglomeration pressure in step b),IV) the content of comonomer B in the mixture M,V) the concentration of the emulsifier in P,VI) the agglomeration throughput,to polymer dispersion foams obtainable by this process and to their use.

    Abstract translation: 本发明涉及一种制备聚合物分散体泡沫L的方法,其中:a)包含至少一种共轭二烯单体A和至少一种烯属不饱和共聚单体B的混合物M通过自由基水乳液聚合在 存在至少一种乳化剂以得到细聚合物分散体P,b)聚合物分散体P被压力聚集以产生粗大的聚合物分散体G,c)如果需要,聚合物分散体G被浓缩并混合,如果 需要的是加强分散体H,和d)来自c)的分散体发泡,得到聚合物分散体泡沫L,其包括通过改变选自以下的参数来调节G的平均粒度和粒度分布:I) 固体含量P,II)步骤b)中的附聚温度,III)步骤b)中的附聚压力,IV)混合物M中共聚单体B的含量,V)P,VI中乳化剂的浓度 聚集体分散体泡沫,可通过该方法获得,并适用于其用途。

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