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31.发明授权
公开(公告)号：US4152501A
公开(公告)日：1979-05-01
申请号：US609911
申请日：1975-09-03
CPC分类号： B01J4/02 , C08F14/06 , B01J2219/00029
摘要： The necessity of opening a large polymerization reactor, in order to introduce a polymerization catalyst between charges in the batch suspension of polymerization of vinyl chloride on a commercial scale, is eliminated, thereby avoiding vinyl chloride emissions into the atmosphere, by isolating a segment of a charging conduit for a polymerization reactor containing vinyl chloride under pressure proximate the reactor; partially filling the isolated segment with water; charging the isolated segment above the water therein with a water-insoluble polymerization catalyst; and displacing into the reactor from the catalyst-charged segment first the water therein and then the catalyst therein with vinyl chloride under pressure.
摘要翻译： 消除了在商业规模的氯乙烯聚合的间歇式悬浮液中引入聚合催化剂的大型聚合反应器的必要性，从而避免氯乙烯通过隔离一段 在靠近反应器的压力下在含有氯乙烯的聚合反应器的加料管道; 用水部分填充隔离段; 用水不溶性聚合催化剂将隔离的段在水上装入其中; 并从负载催化剂的区段首先将水置于反应器中，然后将其中的催化剂与氯乙烯在压力下置换。
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32.发明授权Continuous process for the removal of monomeric impurities from aqueous dispersions of homo- and copolymers of vinyl chloride 失效用于从氯乙烯均聚物和共聚物的水分散体中除去单体杂质的连续方法
公开(公告)号：US4020032A
公开(公告)日：1977-04-26
申请号：US606736
申请日：1975-08-21
申请人： Josef Kalka , Hermann Winter , Jurgen Beckmann
发明人： Josef Kalka , Hermann Winter , Jurgen Beckmann
CPC分类号： C08F6/16
摘要： A process for removing residual monomer from an emulsifier-containing aqueous dispersion of a solid vinyl chloride polymer having a surface tension of less than 60 dyne/cm., which comprises continuously admixing the polymer dispersion with steam in a fluid flow pipe under a pressure of 150-600 torr at a flow velocity of 1-20 m./sec., and passing said admixture at an exit velocity of 30-100 m./sec. horizontally into and along the walls of a degasification tank having a pressure 30-200 torr lower than the pressure in said flow pipe to evaporate residual monomer.
摘要翻译： 从具有小于60达因/厘米的表面张力的固体氯乙烯聚合物的含乳化剂的水性分散体中除去残余单体的方法，其包括将聚合物分散体与蒸汽连续混合在流体流动管中，压力为 150-600托，流速为1-20m./sec，并以30-100m./sec的出口速度通过所述混合物。 水平地进入并沿着具有比所述流动管中的压力低30-200乇的脱气罐的壁并沿着其蒸发以蒸发残留的单体。
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