发明授权
- 专利标题： Hydrocarbon based central system fluid composition
- 专利标题（中）： 烃基中心系统流体组成
-
申请号： US175041申请日： 1980-08-04
-
公开(公告)号： US4299714A公开(公告)日： 1981-11-10
- 发明人: Kensuke Sugiura , Mineo Kagaya , Hiroyuki Aoki , Takeitiro Takehara
- 申请人： Kensuke Sugiura , Mineo Kagaya , Hiroyuki Aoki , Takeitiro Takehara
- 申请人地址： JPX both of JPX both of
- 专利权人： Nippon Oil Company, Ltd.,Nissan Motor Co., Ltd.
- 当前专利权人： Nippon Oil Company, Ltd.,Nissan Motor Co., Ltd.
- 当前专利权人地址： JPX both of JPX both of
- 优先权： JPX54/99400 19790806
- 主分类号： C10M169/04
- IPC分类号： C10M169/04 ; C10N20/04 ; C10N30/02 ; C10N40/04 ; C10N40/06 ; C10N40/08 ; C09K5/00
摘要：
In a central system fluid composition comprising (1) 70 to 95% by weight of a hydrocarbon base oil and (2) 5 to 30% by weight of a viscosity index improver, the improvement wherein said hydrocarbon base oil (1) comprises (a) 25% by weight to less than 50% by weight, based on the weight of the hydrocarbon base oil (1), of an oligomer of 1-decene having an average molecular weight of 200 to 600 and (b) more than 50% by weight to 75% by weight of a petroleum lubricating oil fraction, and said viscosity index improver (2) is a polymethacrylate having a viscosity average molecular weight of 10,000 to 700,000 obtained by polymerizing at least one ester of a saturated monohydric aliphatic alcohol having 1 to 18 carbon atoms with methacrylic acid.
公开/授权文献
信息查询
IPC分类:
