公开(公告)号：EP1446466A1

公开(公告)日：2004-08-18

申请号：EP02776150.1

申请日：2002-10-04

申请人： Crompton Corporation

发明人： DUYCK, Karl ,  NALESNIK, Theodore, E.

IPC分类号： C10M161/00

CPC分类号： C10M149/02 ,  C10M145/10 ,  C10M161/00 ,  C10M2205/02 ,  C10M2205/022 ,  C10M2207/026 ,  C10M2209/086 ,  C10M2215/064 ,  C10M2215/26 ,  C10M2217/02 ,  C10N2230/02 ,  C10N2260/09 ,  C10N2270/02

摘要： A method is disclosed for inhibiting the rate of viscosity growth in an oil concentrate of a VI-dispersant prepared form a copolymer of ethylene and at least one C3-C16 alpha olefin, wherein said copolymer has been grafted with at least one unsaturated carboxylic acid-containing material, further reacted with an amount of a polyamine sufficient to neutralize said acid containing material, or at least one unsaturated nitrogen-containing material, comprising blending a primary antioxidant into said concentrate as a top treatment or as a displacement for an equal amount of diluting oil.

公开(公告)号：EP1432747A1

公开(公告)日：2004-06-30

申请号：EP01970900.5

申请日：2001-09-14

申请人： Crompton Corporation

发明人： DUYCK, Karl ,  NALESNIK, Theodore, E. ,  TRAN, Uyen, Thanh

IPC分类号： C08F255/00 ,  C08F255/02 ,  C08L51/06 ,  C10M145/00

CPC分类号： C08F255/00 ,  C08F255/02 ,  C08L51/06

摘要： A process is disclosed that comprises solution grafting a hydrocarbon polymer prepared from at least C2 to C28 polymerizable hydrocarbon, said polymer having a number average molecular weight in the range of from about 5,000 to about 500,000, with an ethylenically unsaturated C3 to C10 carboxylic acid material, using a free radical initiator, in the presence of an aromatic ester oil of the formula (I) wherein R1, R2, R3, R4, R5, and R6 are independently selected from the group consisting of hydrogen, -COOR7, -COOR8, -COOR9, -COOR10, -COOR11, and -COOR12, provided that no more than 5 of R1, R2, R3, R4, R5 and R6 are hydrogen, and R7, R8, R9, R10, R11, and R12 are independently selected from the group consisting of alkyl and alkylesters.