公开(公告)号：US4035329A

公开(公告)日：1977-07-12

申请号：US633591

申请日：1975-11-19

申请人： Hubert Wiest ,  Josef Hanzalik ,  Wilhelm Lechner ,  Erwin Lieb

发明人： Hubert Wiest ,  Josef Hanzalik ,  Wilhelm Lechner ,  Erwin Lieb

IPC分类号： C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F4/00 ,  C08F4/40 ,  C08F10/00 ,  C08F210/00 ,  C08F210/02 ,  C08F218/00 ,  C08F218/02 ,  C08F218/08 ,  C08L31/04

CPC分类号： C08F218/08 ,  C08F210/02

摘要： A process for the continuous manufacture of an aqueous ethylene/vinyl acetate copolymer dispersion which comprises continuously copolymerizing ethylene and vinyl acetate and optionally other .alpha.-olefinically unsaturated monomers, in an aqueous emulsion in the presence of an emulsifier and/or a protective colloid, and in the presence of a free-radical-forming redox catalyst system of a reducing agent and an oxidizing agent as well, optionally, as a heavy metal salt, and recovering said ethylene/vinyl acetate copolymer dispersion, characterized by (a) the presence of a molar excess of at least 3 times, preferably from 3 to 10 times, said reducing agent over said oxidizing agent dosed into the reaction medium and (b) adding the monomers continuously to the reaction mixture at such a rate that the concentration of unreacted monomers at no place in the reaction zone exceeds 15% by weight of the total weight of the reaction mixture.

摘要翻译： 一种用于连续制造乙烯/乙酸乙烯酯共聚物分散体的方法，其包括在水乳液中在乳化剂和/或保护胶体的存在下连续共聚乙烯和乙酸乙烯酯和任选的其它α-烯烃不饱和单体，以及 在还原剂和氧化剂的自由基形成氧化还原催化剂体系的存在下，任选地，作为重金属盐，并回收所述乙烯/乙酸乙烯酯共聚物分散体，其特征在于（a）存在 摩尔过量为所述还原剂至少3倍，优选3至10倍，所述还原剂超过所述投入到反应介质中的氧化剂，和（b）将所述单体连续加入到反应混合物中，使得未反应单体的浓度 在反应区域的任何地方超过反应混合物总重量的15重量％。

公开(公告)号：US4298576A

公开(公告)日：1981-11-03

申请号：US097708

申请日：1979-11-27

申请人： Helmut Thyret ,  Thomas Balwe ,  Josef Hanzalik ,  Herbert Furst ,  Johann Bauer

发明人： Helmut Thyret ,  Thomas Balwe ,  Josef Hanzalik ,  Herbert Furst ,  Johann Bauer

IPC分类号： C08F2/00 ,  B01J3/00 ,  B01J3/04 ,  B01J19/18 ,  C08F2/18 ,  C08F114/08

CPC分类号： B01J19/18 ,  B01J3/002 ,  B01J3/04 ,  C08F2/18 ,  B01J2219/00078 ,  B01J2219/00763 ,  B01J2219/185 ,  B01J2219/1943 ,  Y10S526/92

摘要： A polymerization autoclave for the suspension polymerization of vinyl compounds in the aqueous phase having a volume of from 50 to 200 m.sup.3, an impeller agitator driven from below at the bottom of the autoclave and two cylindrical displacement bodies acting as flow interrupters, secured downwardly from the autoclave dome, where the autoclave has a height-to-diameter ratio of from 2.4 to 3 with a critically dimensioned agitator and critically dimensioned flow interrupter fittings. By the use of this invention in the case large-scale autoclaves, the heat of polymerization can be removed merely by wall-cooling. The autoclave according to the invention are very economical, as shown by, for example, a spatial capacity of 0.3 to 0.4 metric tons of polyvinyl chloride per m.sup.3 autoclave volume.

摘要翻译： 用于在水相中乙烯基化合物的悬浮聚合的聚合反应釜，其体积为50至200m 3，在高压釜底部从下方驱动的叶轮搅拌器和用作流动断路器的两个圆柱形位移体从 高压灭菌器圆顶，其中高压釜的高度与直径之比为2.4至3，具有严格尺寸的搅拌器和关键尺寸的流动断路器配件。 通过使用本发明，在大型高压釜的情况下，只能通过壁冷却来除去聚合热。 根据本发明的高压釜是非常经济的，例如由0.3至0.4公吨聚氯乙烯/ m3高压釜体积的空间容量所示。