首页>
外国专利>
Initiated scale-free formation of vinyl chloride polymers using washing liquid at temperature affecting initiator half-life
Initiated scale-free formation of vinyl chloride polymers using washing liquid at temperature affecting initiator half-life
展开▼
机译：在影响引发剂半衰期的温度下使用洗涤液引发的无鳞氯乙烯聚合物的引发
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method for preparing vinyl chloride polymers which comprises polymerizing vinyl chloride monomer or a vinylic monomer mixture mainly composed of vinyl chloride in an aqueous medium in the presence of a polymerization initiator, characterized by washing a piping and an opening of a polymerizer, for charging the polymerization initiator into the polymerizer, with water, steam or a washing liquid capable of lowering the half-life of the polymerization initiator to not more than 30 minutes after introducing the initiator into the polymerizer. The method makes it possible to eliminate the formation of polymer scales on the piping and the opening for charging the polymerization initiator into a polymerizer and, therefore, the yield of the vinyl chloride polymers can greatly improved and the production cost can be substantially saved. Moreover, the polymer product does not include any materials used for washing said portions and thus polymer product of high quality can be provided in a high yield.
展开▼
