Novel method of removing residual acrylonitrile from latex systems
    2.
    发明授权
    Novel method of removing residual acrylonitrile from latex systems 失效
    从乳胶体系中除去残留丙烯腈的新方法

    公开(公告)号:US4399253A

    公开(公告)日:1983-08-16

    申请号:US323527

    申请日:1981-11-23

    IPC分类号: C08F6/00 C08F6/06 C08L55/00

    CPC分类号: C08F6/006

    摘要: Acrylonitrile is a monomer that is widely used in the production of a vast variety of polymers. Undesirable quantities of residual unpolymerized acrylonitrile are often present in polymers. The residual or free acrylonitrile in polymers can be reacted with certain thiols in order to reduce their content in the polymer. In the reaction between these thiols and acrylonitrile products are formed which exhibit antioxidant ability.

    摘要翻译: 丙烯腈是广泛用于生产各种聚合物的单体。 聚合物中通常存在不期望量的残留的未聚合丙烯腈。 聚合物中的残留或游离丙烯腈可与某些硫醇反应,以降低它们在聚合物中的含量。 在这些硫醇和形成具有抗氧化能力的丙烯腈产物之间的反应中。

    Shortstopping of free radical polymerizations
    3.
    发明授权
    Shortstopping of free radical polymerizations 失效
    快速自由基聚合

    公开(公告)号:US5384372A

    公开(公告)日:1995-01-24

    申请号:US220328

    申请日:1994-03-30

    CPC分类号: C08F2/42

    摘要: The present invention relates to a method of terminating a free radical initiated emulsion polymerization by using a shortstopping agent selected from the group consisting of isopropylhydroxylamine and salts thereof. One advantage in using these shortstopping agents is these shortstopping agents do not contribute to the generation of volatile nitrosamines.

    摘要翻译: 本发明涉及通过使用选自异丙基羟胺及其盐的速效剂终止自由基引发的乳液聚合的方法。 使用这些速效剂的一个优点是这些速效剂对挥发性亚硝胺的产生没有贡献。

    Method of preparing resin
    4.
    发明授权
    Method of preparing resin 失效
    制备树脂的方法

    公开(公告)号:US4230810A

    公开(公告)日:1980-10-28

    申请号:US36957

    申请日:1979-05-07

    摘要: A method of preparing a resin by free radical emulsion polymerizing a monomer mixture comprised of (A) a water soluble bifunctional monomer, (B) a hard segment hydrophobic enhancing monomer, (C) optionally, a soft segment hydrophobic enhancing monomer, and (D) a hydrophilic enhancing organic acid. The particular advantage in the invention is the utilization of the water soluble bifunctional monomer which has the purpose of essentially eliminating the necessity of additional emulsifying agents. The resin prepared thereby is designed to be suitable for a water reducible composition.

    摘要翻译: 由(A)水溶性双官能单体,(B)硬链段疏水性增强单体,(C)任选的软链段疏水性增强单体和(D)的单体混合物自由基乳液聚合制备树脂的方法 )亲水增强有机酸。 本发明的特别优点是利用水溶性双功能单体,其目的基本上消除了另外的乳化剂的需要。 由此制备的树脂被设计成适用于可水稀释的组合物。