基本信息:
- 专利标题： Lubricating compositions
- 专利标题（中）：一种润滑组合物
- 申请号：EP97300216.5 申请日：1997-01-15
- 公开(公告)号：EP0786511B1 公开(公告)日：2005-06-15
- 发明人： Scharf, Curtis R. , Richardson, Robert C. , Roell, Bernard C., Jr.
- 申请人： The Lubrizol Corporation
- 申请人地址： 29400 Lakeland Boulevard Wickliffe, Ohio 44092 US
- 专利权人： The Lubrizol Corporation
- 当前专利权人： The Lubrizol Corporation
- 当前专利权人地址： 29400 Lakeland Boulevard Wickliffe, Ohio 44092 US
- 代理机构： Crisp, David Norman
- 优先权： US599423 19960116
- 主分类号： C10M111/00
- IPC分类号： C10M111/00 ; C10M111/04 ; C10M169/04
摘要：
This invention relates to a lubricating composition comprising at least about 30% by weight at least one mineral oil, having a kinematic viscosity of less than about 8 cSt at 100 DEG C, (A) from about 15% to about 40% by weight of at least one polymer, and (B) up to about 30% by weight of at least one fluidizing agent, provided that when the fluidizing agent is a poly alpha -olefin having a kinematic viscosity from about 2 to about 30 cSt at 100 DEG C, then the poly alpha -olefin is present in an amount up to about 12% by weight, wherein the lubricating composition has a shear loss of less than about 15% in the 20 hour taper bearing shear test. The invention also relates to concentrates used in preparing lubricating compositions. The present combination of components provides good low and high temperature properties especially when used in combination with one or more mineral oils. In one aspect, the compositions provide improved oxidation resistance.
公开/授权文献:
- EP0786511A3 Lubricating compositions 公开/授权日：1997-08-27