公开(公告)号：EP0923611B1

公开(公告)日：2004-01-28

申请号：EP97937698.5

申请日：1997-08-22

申请人： Imperial Chemical Industries PLC

发明人： REEKMANS, Steven, Irene, Jozef ,  CORNET, Phillip

IPC分类号： C08F20/56 ,  C08F2/32 ,  C02F1/56

CPC分类号： C02F1/56 ,  C08F20/56 ,  Y02W10/37

公开(公告)号：EP0923611A1

公开(公告)日：1999-06-23

申请号：EP97937698.0

申请日：1997-08-22

申请人： IMPERIAL CHEMICAL INDUSTRIES PLC

发明人： REEKMANS, Steven, Irene, Jozef ,  CORNET, Phillip

IPC分类号： C02F1 ,  C08F2 ,  C08F6 ,  C08F20

CPC分类号： C02F1/56 ,  C08F20/56 ,  Y02W10/37

摘要： Polyacrylamide is made by inverse emulsion polymerisation using an oil phase including at least one ester based oil, particularly a vegetable oil, using a primary emulsification system including a polymeric carboxylic surfactant; a low HLB emulsifier; and an oil phase structurant, particularly an ester wax such as beeswax. The use of the combination emulsifier enables the use of vegetable oils especially rape seed (including canola) oil as the continuous in the polymerisation step.