VOIDED LATEX PARTICLES
    86.
    发明公开
    VOIDED LATEX PARTICLES 审中-公开
    空隙胶乳颗粒

    公开(公告)号:EP3194156A1

    公开(公告)日:2017-07-26

    申请号:EP15833136.3

    申请日:2015-08-07

    Applicant: Arkema, Inc.

    Abstract: A process for forming voided latex particles is improved by combining swelling and polymerization of an outer shell into a single step. The process includes contacting multi-stage emulsion polymer particles comprising a core, at least one intermediate shell, with a swelling agent, and polymerizing an outer shell after said contacting with swelling agent wherein the core and the at least one intermediate shell are contacted with swelling agent in the presence of less than 0.5% monomer based on the weight of the multi-stage emulsion polymer particles, and substantially all of the swelling occurs during polymerization of the outer shell.

    Abstract translation: 通过将外壳的溶胀和聚合结合成单一步骤来改进形成空隙胶乳颗粒的方法。 该方法包括使包含芯,至少一个中间壳的多级乳液聚合物颗粒与溶胀剂接触,并且在所述接触后使外壳聚合于溶胀剂,其中使芯和至少一个中间壳与溶胀 试剂在基于多级乳液聚合物颗粒的重量计小于0.5%的单体存在下进行,并且基本上所有的溶胀发生在外壳的聚合过程中。

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