Colloidally stable dispersions
    1.
    发明授权
    Colloidally stable dispersions 失效
    胶体稳定的分散体

    公开(公告)号:US3965032A

    公开(公告)日:1976-06-22

    申请号:US351713

    申请日:1973-04-16

    摘要: This invention is directed to dispersions containing stabilizing amounts of certain substantially linear interpolymeric interfacially spreading polyelectrolytes composed of a mixture of nonionic hydrophobic units and ionic hydrophilic units where the nonionic units are randomly distributed in the backbone of the polyelectrolyte and where the polyelectrolyte is adsorbed at the surface of the disperse phase of the dispersion in a substantially flat configuration. The polyelectrolytes are further characterized by having an adsorption constant equal to or greater than 1 at the point where the surface of the disperse phase is saturated with the polyelectrolyte, the absorption constant being determined as the amount of polyelectrolyte in the disperse phase divided by the amount of polyelectrolyte in the continuous phase. These stabilized dispersions are particularly useful as coating compositions and for use in the preparation of microspheres and seed latexes.

    摘要翻译: 本发明涉及含有稳定量的由非离子疏水单元和离子亲水单元的混合物组成的某些基本上直链的互聚物界面扩散聚电解质的分散体,其中非离子单元随机分布在聚电解质的主链中,并且其中聚电解质被吸附在 分散体的分散相的表面呈基本平坦的构型。 聚电解质进一步的特征在于在分散相的表面被聚电解质饱和的点处具有等于或大于1的吸附常数,吸收常数被确定为分散相中聚电解质的量除以量 的聚电解质在连续相中。 这些稳定的分散体特别可用作涂料组合物并用于制备微球和种子胶乳。

    Styrene-butadiene interpolymer latex based cement additives
    2.
    发明授权
    Styrene-butadiene interpolymer latex based cement additives 失效
    苯乙烯 - 丁二烯互聚物胶乳基水泥添加剂

    公开(公告)号:US4086201A

    公开(公告)日:1978-04-25

    申请号:US816052

    申请日:1977-07-15

    摘要: This invention is directed to cement additives consisting essentially of (1) a styrene-butadiene interpolymer latex, (2) a nonionic surfactant, (3) a polyelectrolyte comprising the product obtained by copolymerizing methylmethacrylate and a sulfoester of .alpha.-methylene carboxylic acid or its salt, and (4) a polyorganosiloxane foam depressant, which additives provide portland cement compositions having excellent strength properties, workability and adhesion to cementitious substrates.

    摘要翻译: 本发明涉及基本上由(1)苯乙烯 - 丁二烯互聚物胶乳,(2)非离子表面活性剂,(3)聚电解质组成的聚电解质组成的水泥添加剂,所述聚电解质包括通过甲基丙烯酸甲酯和α-亚甲基羧酸的磺酯或其 盐,和(4)聚有机硅氧烷泡沫抑制剂,这些添加剂提供具有优异的强度性能,可加工性和对水泥基材的粘附性的波特兰水泥组合物。