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    • 3. 发明授权
    • Process for the continuous manufacture of vinyl chloride polymers
    • 连续制造氯乙烯聚合物的方法
    • US4286078A
    • 1981-08-25
    • US62043
    • 1979-07-30
    • Franz BotschHelmut Kraus
    • Franz BotschHelmut Kraus
    • C08F14/06C08F291/00C08F259/04
    • C08F14/06C08F291/00Y10S526/911
    • A process for the continuous preparation of vinyl chloride polymers containing at least 85 weight percent of polymerized vinyl chloride units in an aqueous emulsion in the presence of at least one water soluble catalyst and 1.5 to 3.5 weight percent (calculated on the monomer(s)) of at least one water soluble salt of an aliphatic, saturated monocarboxylic acid having the formula ##STR1## wherein R.sub.1 and R.sub.2 are equal or different each representing a saturated, branched or unbranched alkyl radical having 1 to 5 carbon atoms or of at least one of said water soluble salt in mixture together with at least one known emulsifier being an organic compound containing sulfonic acid-groups. The resulting polymers show an equally excellent thermostability in mixture with one of a multiplicity of known stabilizers especially of the lead-, tin- or barium/cadmium type.
    • 在至少一种水溶性催化剂和1.5-3.5%重量(基于单体计算)的存在下,在含水乳液中连续制备含有至少85重量%聚合氯乙烯单元的氯乙烯聚合物的方法, 的至少一种具有式“IMAGE”的脂族饱和一元羧酸的水溶性盐,其中R 1和R 2各自表示具有1至5个碳原子的饱和,支链或非支链烷基或至少一个 所述混合物中的水溶性盐与至少一种已知的乳化剂是含有磺酸基团的有机化合物。 所得聚合物与多种已知的稳定剂,特别是铅,锡或钡/镉类中的一种稳定性显示出同样优异的热稳定性。