Polymer dispersions and their uses
    27.
    发明授权

    公开(公告)号:US4536557A

    公开(公告)日:1985-08-20

    申请号:US681643

    申请日:1984-12-14

    申请人: Duane A. Heyman

    发明人: Duane A. Heyman

    CPC分类号: C08F2/24 C08L75/04

    摘要: This invention relates to polymer dispersions prepared by the in situ polymerization of an ethylenically unsaturated monomer or mixture of monomers in a chain extender in the presence of a free radical polymerization initiator and a polyamide stabilizer.The invention also relates to mixtures of the polymer dispersions with compounds having two or more active hydrogen atoms as determined by the Zerewittinoff method. These mixtures are used to prepare polyurethane products.

    Process for the preparation of white graft polymer dispersions and
flame-retardant polyurethane foams
    29.
    发明授权
    Process for the preparation of white graft polymer dispersions and flame-retardant polyurethane foams 失效
    制备白色接枝聚合物分散体和阻燃聚氨酯泡沫的方法

    公开(公告)号:US4458038A

    公开(公告)日:1984-07-03

    申请号:US471722

    申请日:1983-03-03

    摘要: White graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions employ less than 0.1 mole of induced unsaturation per mole of polyol mixture. Improved processes for the preparation of these polymer dispersions employ either maleate or fumarate derived polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol with a compound selected from the group consisting of maleic acid, maleic anhydride and fumaric acid and an alkylene oxide in the presence of salts and oxides of divalent metals.

    摘要翻译: 聚氧亚烷基聚醚多元醇中的白色接枝聚合物分散体与阻燃化合物一起使用以制备阻燃聚氨酯泡沫。 聚合物分散体每摩尔多元醇混合物使用少于0.1摩尔的诱导不饱和度。 用于制备这些聚合物分散体的改进方法使用通过使聚氧化烯聚醚多元醇与选自马来酸,马来酸酐和富马酸的组分和烯化氧反应制备的马来酸酯或富马酸酯衍生的聚醚酯多元醇或聚醚酯多元醇 存在二价金属的盐和氧化物。