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    • 31. 发明申请
    • CHLORINATED VINYL CHLORIDE-BASED RESIN AND MOLDED ARTICLES
    • 氯化氯乙烯基树脂和模塑制品
    • WO99067305A1
    • 1999-12-29
    • PCT/JP1999/000417
    • 1999-02-02
    • C08F2/20C08F8/20C08F14/02
    • C08F8/20C08F14/06
    • An object of the present invention is to provide a vinyl chloride resin having a high void fraction and having micropores in the interior of particles thereof, a chlorinated vinyl chloride resin which is excellent in performance of a gelated product, capability of gelating and heat resistance, and a method for producing the same; a pipe and a joint made from a chlorinated vinyl chloride resin which are excellent in resistance to heat and impact; a plate made from a chlorinated vinyl chloride resin which are excellent in resistance to heat, impact and chemicals; a molded article made from a heat-resistant vinyl chloride resin which is excellent in smoothness and resistance to heat and has good appearance; and a pipe made from a heat-resistant vinyl chloride resin which is excellent in smoothness and resistance to heat or excellent in smoothness and resistance to heat and SC. The present invention relates to a vinyl chloride resin and a chlorinated vinyl chloride resin and a method for the production thereof.
    • 本发明的目的是提供一种具有高空隙率和在其颗粒内部具有微孔的氯乙烯树脂,具有优异的凝胶化产品性能,凝胶化和耐热性能的氯化氯乙烯树脂, 及其制造方法。 由耐热和耐冲击性优异的氯化氯乙烯树脂制成的管和接头; 由耐热,耐冲击和耐化学性优异的氯化氯乙烯树脂制成的板; 由耐热氯乙烯树脂制成的成型品,其平滑性和耐热性优异,外观美观; 以及由耐热氯乙烯树脂制成的管材,其平滑度和耐热性优异,平滑性和耐热性优异且SC优异。 本发明涉及氯乙烯树脂和氯化氯乙烯树脂及其制备方法。
    • 34. 发明授权
    • Process for preparing vinyl chloride polymer
    • 制备氯乙烯聚合物的方法
    • US5502123A
    • 1996-03-26
    • US288590
    • 1994-08-10
    • Tadayoshi HiyamaToru YokotaTadashi Amano
    • Tadayoshi HiyamaToru YokotaTadashi Amano
    • C08F2/18C08F2/20C08F14/02C08F14/06
    • C08F14/06
    • Polyvinyl chloride is prepared by suspension polymerization of a monomeric charge of vinyl chloride dispersed and suspended in an aqueous medium while agitating the suspension. An oil-soluble partially saponified polyvinyl alcohol is added to the monomeric charge as a dispersant at the start of polymerization. A water-soluble partially saponified polyvinyl alcohol and/or a hydroxypropylmethyl cellulose is continuously added as a suspending agent from the start of polymerization. The suspending agent is entirely added while the polymerization rate is in the range of 5-50%. The agitating power applied to the aqueous suspension is 50-110 kg.multidot.m/s.multidot.ton while the suspending agent is being added, and increased above 110 kg.multidot.m/s.multidot.ton after the completion of addition. The resulting polymer has a high bulk density and a sharp particle size distribution and is susceptible to extrusion.
    • 通过在搅拌悬浮液的同时将分散并悬浮在水性介质中的单体氯乙烯的电荷悬浮聚合制备聚氯乙烯。 在聚合开始时,将油溶性部分皂化的聚乙烯醇作为分散剂加入到单体电荷中。 从聚合开始起,作为悬浮剂,连续添加水溶性部分皂化聚乙烯醇和/或羟丙基甲基纤维素。 当聚合速率在5-50%的范围内时,全部添加悬浮剂。 施加到水悬浮液的搅拌功率为50-110kgxm / sxton,同时加入悬浮剂,并且在添加完成后增加到110kgxm / sxton以上。 所得聚合物具有高堆积密度和尖锐的粒度分布,并且易于挤出。