公开(公告)号：US3788990A

公开(公告)日：1974-01-29

申请号：US21316571

申请日：1971-12-28

申请人： ELLIOTT J ,  ASKEW H ,  CRAIL I

发明人： CRAIL I ,  ASKEW H ,  ELLIOTT J

IPC分类号： C10M165/00 ,  C10M1/28 ,  C10M1/40

CPC分类号： C10M165/00 ,  C10M145/14 ,  C10M159/20 ,  C10M159/22 ,  C10M159/24 ,  C10M2207/027 ,  C10M2207/028 ,  C10M2207/144 ,  C10M2207/146 ,  C10M2207/26 ,  C10M2207/262 ,  C10M2209/084 ,  C10M2215/04 ,  C10M2215/086 ,  C10M2215/26 ,  C10M2215/28 ,  C10M2217/046 ,  C10M2217/06 ,  C10M2219/02 ,  C10M2219/046 ,  C10M2219/087 ,  C10M2219/088 ,  C10M2219/089 ,  C10M2223/045 ,  C10M2223/12 ,  C10M2225/04 ,  C10M2225/041 ,  C10N2210/02 ,  C10N2270/02

摘要： THE COMPOSITION OF THE INVENTION ARE LUBRICATING OILS COMPRISING A MAJOR PROPORTION OF A MINERAL OIL OF LUBRICATING VISCOSITY AND A MINOR PROPORTION OF A COMBINATION OF ADDITIVES (A) AND (B), ADDITIVE (A) BEING A NITROGEN-FREE RANDOM COPOLYMER OF ONE OR MORE ALKYL METHACRYLATES AND ONE OR MORE ALKYL ACRYLATES, THE COPOLYMER BEING COMPOSED OF UP TO 65% ALKYL ACRYLATE UNITS BASED ON THE TOTAL NUMBER OF ALKYL METHACRYLATE AND ALKYL ACRYLATE UNITS PRESENT IN THE COPOLYMER AND ADDITIVE (B) BEING AN ALKALINE EARTH METAL CONTAINING DETERGENT HAVING A TOTAL BASE NUMBER GREATER THAN 40.