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    • 4. 发明授权
    • Stabilized polymer beads and method of preparation
    • 稳定聚合物珠粒及其制备方法
    • US07163998B2
    • 2007-01-16
    • US10658009
    • 2003-09-09
    • Jeffrey W. LeonTiecheng A. Qiao
    • Jeffrey W. LeonTiecheng A. Qiao
    • C08G75/00C08C9/00C08F283/00C08L81/00
    • C08F265/04C08F257/02C08F2800/20C08F2810/30C08L51/003C08L2666/02
    • The present invention relates to a polymer particles comprising a polymer bead stabilized by vinylsulfonyl-functionalized polymers grafted to the surface of the bead, as well as a particle composition comprising monodisperse polymer beads stabilized by vinylsulfonyl-functionalized polymers, wherein the vinylsulfonyl-functionalized polymers are grafted to the surfaces of the beads. The invention also includes a method of preparing monodisperse polymer particles comprising preparing a homogeneous solution of an ethylenically unsaturated polymerizable monomer, an initiator, and a polymeric stabilizer, wherein the polymeric stabilizer consists of repetitive units, wherein the repetitive units comprise latent vinylsulfonyl moiety, polymerizing the homogeneous solution, and converting the latent vinylsulfonyl moiety to vinylsulfonyl moieties.
    • 本发明涉及包含由接枝到珠粒表面的乙烯基磺酰基官能化聚合物稳定的聚合物珠粒的聚合物颗粒,以及包含由乙烯基磺酰基官能化聚合物稳定的单分散聚合物珠粒的颗粒组合物,其中乙烯基磺酰基官能化聚合物是 接枝到珠的表面。 本发明还包括制备单分散聚合物颗粒的方法,其包括制备烯属不饱和可聚合单体,引发剂和聚合物稳定剂的均匀溶液,其中聚合物稳定剂由重复单元组成,其中重复单元包括潜在的乙烯基磺酰基部分,聚合 均匀溶液,并将潜在的乙烯基磺酰基部分转化为乙烯基磺酰基部分。
    • 5. 发明授权
    • 2-aminobenzoazoles as activators for vulcanization of rubber
    • 2-AMINOBENZOAZOLES作为活化剂用于橡胶的挥发
    • US3817948A
    • 1974-06-18
    • US27317372
    • 1972-07-19
    • MONSANTO CO
    • BOUSTANY KD AMICO J
    • C08K5/35C08K5/46C08C11/52C08C9/00C08F27/06
    • C08K5/35C08K5/46C08L21/00
    • A class of 2-aminobenzoazoles is described which is used with primary accelerators to enhance the vulcanization rate of rubber. The new vulcanization activators are characterized by the formula

      IN WHICH Y is oxygen or sulfur, X is hydrogen, alkyl, alkoxy, nitro, halo or hydroxy, and n is one or two; when n is one R is hydrogen, alkyl, aryl, cycloalkyl, aralkyl, hydroxyalkyl, or alkenyl; when n is two R is alkylene. The conjoint use of the new activators with thiazole accelerators is particularly advantageous since the vulcanization rate is increased without affecting the processing safety of the vulcanizable composition.
    • 描述了一类2-氨基苯并唑,其与初级促进剂一起用于增强橡胶的硫化速率。 新型硫化活化剂的特征是其中Y为氧或硫,X为氢,烷基,烷氧基,硝基,卤素或羟基,n为1或2; 当n为1时,R为氢,烷基,芳基,环烷基,芳烷基,羟基烷基或烯基; 当n为2时,R为亚烷基。 与噻唑促进剂联合使用新的活化剂是特别有利的,因为硫化速率增加而不影响可硫化组合物的加工安全性。