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公开(公告)号:EP0696631A3
公开(公告)日:1998-06-10
申请号:EP95305446
申请日:1995-08-03
发明人: TAYLOR GRAHAME N
IPC分类号: B01D17/04 , B01D17/05 , C08G65/329 , C10G33/04 , C08G65/32
CPC分类号: C08G65/329 , B01D17/047 , C10G33/04
摘要: A water-in-oil demulsifier is prepared by (a) reacting a high molecular weight polyalkylene glycol (PAG) with ethylene oxide (EO) to form a PAG/EO adduct, (b) esterifying the PAG/EO adduct with a diacid anhydride to form a diester, (c) reacting the diester with a vinyl monomer, and (d) additionally esterifying the product of step (c) with a polyhydric material.