首页> 外国专利> PROCESS FOR THE PREPARATION IN A MICRODISPERSION OF VINYL CHLORIDE HOMO-AND COPOLYMER LATICES CAPABLE OF BEING USED AS SEEDING MATERIALS

PROCESS FOR THE PREPARATION IN A MICRODISPERSION OF VINYL CHLORIDE HOMO-AND COPOLYMER LATICES CAPABLE OF BEING USED AS SEEDING MATERIALS

机译:可用作材料的微分散氯乙烯均聚物和共聚物胶乳的制备方法

摘要

A process for the preparation of a vinyl chloride polymer latex having particles with a mean diameter between about 0.2 and 0.8 mu m and containing at least one organosoluble polymerization initiator comprising dispersing in an aqueous reaction medium also containing parabenzoquinone, at least one monomer, at least one anionic emulsifier and optionally at least one nonionic emulsifier, and from about 0.004 to 0.16% by weight, with respect to said at least one monomer, of said initiator expressed in terms of active oxygen, polymerizing said at least one monomer at a desired polymerization temperature, theta 1, and continuously adding parabenzoquinone to said aqueous reaction medium during the polymerization when the temperature theta 2 of the reaction medium is such that the difference theta 2- theta 1 exceeds a value from 0 DEG to +5 DEG C. The invention also includes the resultant products and their use in seeded microsuspensions for the preparation of vinyl chloride polymers.
机译:制备氯乙烯聚合物胶乳的方法,该胶乳的平均直径为约0.2-0.8μm,并且含有至少一种有机可溶性聚合引发剂,该方法包括分散在还含有对苯醌,至少一种单体,至少一种水相的反应介质中。相对于所述至少一种单体,一种阴离子型乳化剂和任选地至少一种非离子型乳化剂,相对于所述至少一种单体按重量计约0.004-0.16%的所述引发剂,以活性氧表示,使所述至少一种单体在期望的聚合反应下聚合当温度为θ1时,当反应介质的温度θ2为使得差θ2-θ1超过0℃至+ 5℃的值时,在聚合过程中向所述含水反应介质中连续添加对苯醌。还包括所得产物及其在种子微悬浮液中用于制备氯乙烯聚合物的用途。

著录项

  • 公开/公告号ZA866680B

    专利类型

  • 公开/公告日1987-05-27

    原文格式PDF

  • 申请/专利权人 ATOCHEM;

    申请/专利号ZA19860006680

  • 发明设计人 DANIEL BRULET;

    申请日1986-09-03

  • 分类号C08F;

  • 国家 ZA

  • 入库时间 2022-08-22 07:19:14

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