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.
申请公布号
WO9809998(A1)
申请公布日期
1998.03.12
申请号
WO1997GB02255
申请日期
1997.08.22
申请人
IMPERIAL CHEMICAL INDUSTRIES PLC;REEKMANS, STEVEN, IRENE, JOZEF;CORNET, PHILLIP