公开(公告)号：US3592800A

公开(公告)日：1971-07-13

申请号：US3592800D

申请日：1968-11-26

申请人： WERNER OSCHMANN ,  RICHARD GREGER ,  ALFRED HAUSS ,  GERNOT WINTER

发明人： OSCHMANN WERNER ,  GREGER RICHARD ,  HAUSS ALFRED ,  WINTER GERNOT

IPC分类号： C08F14/06 ,  C08F1/11 ,  C08F3/30 ,  C08F15/28

CPC分类号： C08F14/06 ,  Y10S526/909 ,  C08F2/20

摘要： PROCESS FOR POLYMERIZING VINYL CHLORIDE IN AQUEOUS SUSPENSION IN THE PRESENCE OF CONVENTIONAL HIGH MOLECULAR WEIGHT PROTECTIVE COLLOIDS AND A LOW MOLECULAR WEIGHT POLYVINLY ALCOHOL WHICH IMPROVES THE ABSORPTION OF PLASTICIZER WITHOUT AFFECTING THE HIGH ELECTRICAL RESISTANCE.

公开(公告)号：US3957744A

公开(公告)日：1976-05-18

申请号：US341452

申请日：1973-03-15

申请人： Walter Deuschel ,  Erich Gulbins ,  Alfred Hauss ,  Dietrich Lausberg ,  Wilhelm Sigmund

发明人： Walter Deuschel ,  Erich Gulbins ,  Alfred Hauss ,  Dietrich Lausberg ,  Wilhelm Sigmund

IPC分类号： C08F14/00 ,  C08F2/00 ,  C08F2/18 ,  C08F14/06 ,  C08F1/60 ,  C08F1/78 ,  C08F3/30 ,  C08F15/28

CPC分类号： C08F14/06 ,  Y10S526/91

摘要： Polymerization of vinyl chloride in aqueous suspension in the presence of free-radical initiators of short half-life at pH's below 8. The temperature of the reactor wall must not be more than 20.degree.C above the temperature of the polymerization mixture during the heat-up phase and it must be lower than the temperature of the polymerization mixture during the subsequent polymerization phase. This procedure suppresses the formation of incrustations in the reactor.