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1. 发明公开

EP0508349A1 Suspension polymerization of vinyl chloride 失效
标题翻译：悬浮聚合乙烯基氯化物。
公开(公告)号：EP0508349A1
公开(公告)日：1992-10-14
申请号：EP92105923.4
申请日：1992-04-06
申请人： SHIN-ETSU CHEMICAL CO., LTD.
发明人： Amano, Tadashi , Koga, Toshimichi
IPC分类号： C08F14/06
CPC分类号： C08F14/06 , C08F2/18
摘要： An improved method is proposed for the suspension polymerization of vinyl chloride monomer in an aqueous medium, by which the polyvinyl chloride resin obtained may have an increased bulk density without causing any disadvantages. The improvement can be obtained by controlling the power on the stirrer for the agitation of the polymerization mixture in such a manner that the power at the moment of the start of the polymerization reaction is 100 to 200 kgf·m/s per 1000 kg of the polymerization mixture and the power is subsequently decreased to 60% to 90% of the value at the start of the polymerization reaction until the moment when conversion of the monomer to polymer does not exceed 30%.
摘要翻译：提出了一种用于氯乙烯单体在水性介质中的悬浮聚合的改进方法，通过该方法获得的聚氯乙烯树脂可以具有增加的堆积密度而不引起任何缺点。可以通过控制搅拌器上的搅拌聚合混合物的功率来获得改进，使得聚合反应开始时的功率为每1000kg的聚合反应时的功率为100-200kgf.m / s 聚合反应混合物的功率随后降低到聚合反应开始时的60％至90％，直到单体转化为聚合物的时刻不超过30％。

2. 发明公开

EP0442737A2 Method for the preparation of a polyvinyl chloride resin 失效
标题翻译： Verfahren zur Herstellung von Polyvinylchlorid-Harz。
公开(公告)号：EP0442737A2
公开(公告)日：1991-08-21
申请号：EP91301203.5
申请日：1991-02-14
申请人： Shin-Etsu Chemical Co., Ltd.
发明人： Noguki, Genji , Koga, Toshimichi , Amano, Tadashi
IPC分类号： C08F14/06 , C08F2/18 , C08F2/44
CPC分类号： C08F14/06 , C08K5/103 , C08F2/18 , C08L27/06
摘要： An improvement is proposed for decreasing triboelectric static charging of a polyvinyl chloride resin powder so as to improve the flowability of the powder and prevent a decrease in the bulk density of the powder due to static electricity. The improvement comprises adding to the aqueous polymerization mixture during the polymerization process a specified amount of an aqueous dispersion containing a salt of a long-chain carboxylic acid with a divalent metal and an ester of sorbitan with a long-chain carboxylic acid in a specified weight proportion and in a specified total concentration, at a point when conversion of the monomer to polymer is at least 70%.
摘要翻译：提出了降低聚氯乙烯树脂粉末的摩擦带电静电充电的改进，以改善粉末的流动性并防止由于静电导致的粉末的堆积密度的降低。该改进包括在聚合过程中向含水聚合混合物中加入指定量的含有二价金属的长链羧酸盐和脱水山梨糖醇与特定重量的长链羧酸酯的水分散体在单体向聚合物的转化率至少为70％时的比例和指定的总浓度。

3. 发明授权

EP0442737B1 Method for the preparation of a polyvinyl chloride resin 失效
标题翻译：一种制造聚氯乙烯树脂的方法。
公开(公告)号：EP0442737B1
公开(公告)日：1994-04-20
申请号：EP91301203.5
申请日：1991-02-14
申请人： Shin-Etsu Chemical Co., Ltd.
发明人： Noguki, Genji , Koga, Toshimichi , Amano, Tadashi
IPC分类号： C08F14/06 , C08F2/18 , C08F2/44
CPC分类号： C08F14/06 , C08K5/103 , C08F2/18 , C08L27/06

4. 发明公开

EP0442737A3 Method for the preparation of a polyvinyl chloride resin 失效
标题翻译：聚氯乙烯树脂的制备方法
公开(公告)号：EP0442737A3
公开(公告)日：1991-12-04
申请号：EP91301203.5
申请日：1991-02-14
申请人： Shin-Etsu Chemical Co., Ltd.
发明人： Noguki, Genji , Koga, Toshimichi , Amano, Tadashi
IPC分类号： C08F14/06 , C08F2/18 , C08F2/44
CPC分类号： C08F14/06 , C08K5/103 , C08F2/18 , C08L27/06
摘要： An improvement is proposed for decreasing triboelectric static charging of a polyvinyl chloride resin powder so as to improve the flowability of the powder and prevent a decrease in the bulk density of the powder due to static electricity. The improvement comprises adding to the aqueous polymerization mixture during the polymerization process a specified amount of an aqueous dispersion containing a salt of a long-chain carboxylic acid with a divalent metal and an ester of sorbitan with a long-chain carboxylic acid in a specified weight proportion and in a specified total concentration, at a point when conversion of the monomer to polymer is at least 70%.

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