公开(公告)号：US4173696A

公开(公告)日：1979-11-06

申请号：US871249

申请日：1978-01-23

申请人： Shunichi Koyanagi ,  Niichiro Hasegawa ,  Toshihide Shimizu ,  Sensaku Katusima ,  Ichiro Kaneko

发明人： Shunichi Koyanagi ,  Niichiro Hasegawa ,  Toshihide Shimizu ,  Sensaku Katusima ,  Ichiro Kaneko

IPC分类号： C08F2/44 ,  C08F20060101 ,  C08F2/00 ,  C08F2/18 ,  C08F2/38 ,  C08F2/02 ,  C08F2/22

CPC分类号： C08F2/004

摘要： A novel and improved method for polymerizing a vinyl monomer in a polymerization reactor is provided. The inner walls of the polymerization reactor and other surfaces coming into contact with the monomer are coated with an aqueous liquid containing at least one alkali metal or ammonium salt of an anionic dye of the sulfonic carboxylic acid form and having a pH value adjusted not to exceed 7 by aid of a pH adjusting agent, and the thus coated surfaces are dried with heat before the polymerization is conducted. The method serves to greatly reduce the deposition of polymer scale on those surfaces and, consequently, improve the productivity as well as the quality of polymer product.

摘要翻译： 提供了一种在聚合反应器中聚合乙烯基单体的新颖和改进的方法。 聚合反应器的内壁和与单体接触的其它表面涂覆有含有至少一种磺酸羧酸形式的阴离子染料的碱金属盐或铵盐的水溶液，其pH值调节不超过 通过pH调节剂，并且在进行聚合之前将这样涂覆的表面加热干燥。 该方法用于大大降低聚合物垢在这些表面上的沉积，从而提高聚合物产品的生产率和质量。