公开(公告)号：US20180066096A1

公开(公告)日：2018-03-08

申请号：US15561532

申请日：2016-03-29

申请人： TOTAL MARKETING SERVICES

发明人： Raphaele IOVINE ,  Gregory DESCROIX ,  Jean-Francois TASSIN ,  Damien CHAVEROUX

IPC分类号： C08F257/02 ,  C08F210/06 ,  C08F210/02 ,  C10M169/04 ,  C10M143/10 ,  C10M143/04

CPC分类号： C08F257/02 ,  C08F210/02 ,  C08F210/06 ,  C08F293/005 ,  C08F297/02 ,  C08F2800/20 ,  C10M143/04 ,  C10M143/10 ,  C10M169/04 ,  C10M2203/1006 ,  C10M2205/022 ,  C10M2205/223 ,  C10N2220/021 ,  C10N2220/029 ,  C10N2230/02 ,  C10N2230/06 ,  C10N2230/54 ,  C10N2240/04 ,  C10M2205/024 ,  C10M2205/04

摘要： Disclosed is a star copolymer (C) including at least 10 wt. % of units derived from styrene monomer and including arms that include a statistical copolymer (EP) including ethylene units and propylene units, and the method for preparing same. Also disclosed is the use thereof in lubricating compositions, in particular for improving the viscosity index, to the lubricating compositions thus obtained and to the uses thereof.