Toughened mercaptosiloxane modified emulsion polymerized vinylic polymers
    32.
    发明授权
    Toughened mercaptosiloxane modified emulsion polymerized vinylic polymers 失效
    增韧的巯基硅氧烷改性乳液聚合的乙烯基聚合物

    公开(公告)号:US4071577A

    公开(公告)日:1978-01-31

    申请号:US679595

    申请日:1976-04-23

    CPC分类号: C08F283/122

    摘要: The impact strength of certain thermoplastic vinylic polymers is improved by polymerizing the corresponding monomers in an emulsion of a diorganosiloxane containing units of the formula HSR'SiR.sub.n O.sub.3-n/2. For example a styrene acrylonitrile copolymer containing 20 percent by weight of a dimethylsiloxane-3-mercaptopropylsiloxane copolymer having 1 mol percent mercaptosiloxane has an Izod notched impact strength of 10.8 foot pounds per inch.

    摘要翻译: 通过在含有式HSR'SiRnO3-n / 2的单元的二有机硅氧烷的乳液中聚合相应的单体来改善某些热塑性乙烯基聚合物的冲击强度。 例如,含有20重量%的具有1摩尔%巯基硅氧烷的二甲基硅氧烷-3-巯基丙基硅氧烷共聚物的苯乙烯丙烯腈共聚物具有10.8英尺磅/英寸的Izod缺口冲击强度。