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公开(公告)号:US4732942A
公开(公告)日:1988-03-22
申请号:US902837
申请日:1986-09-02
Applicant: Christopher S. Liu , Benjamin J. Kaufman , Maria M. Kapucinski
Inventor: Christopher S. Liu , Benjamin J. Kaufman , Maria M. Kapucinski
IPC: C08F8/32 , C08F255/00 , C08F255/02 , C10M145/10 , C10M145/14 , C08F255/04 , C08F255/06
CPC classification number: C10M145/14 , C08F255/00 , C08F8/32 , C10M2205/00 , C10M2205/02 , C10M2205/022 , C10M2205/024 , C10M2205/06 , C10M2205/08 , C10M2205/10 , C10M2207/024 , C10M2209/084 , C10M2209/104 , C10M2215/04 , C10M2215/064 , C10M2215/086 , C10M2215/26 , C10M2215/28 , C10M2217/024 , C10M2217/028 , C10M2217/046 , C10M2217/06 , C10M2219/044 , C10M2219/046 , C10M2223/045 , C10N2210/02 , C10N2240/10 , C10N2240/101 , C10N2240/102 , C10N2240/103 , C10N2240/104 , C10N2240/106
Abstract: Lubricating oil compositions of improved dispersancy contain an ethylene-propylene copolymer grafted onto which is acrylic acid dimer, the free carboxyl group of which has thereafter been amidized with diethylene triamine.