发明名称 |
Lubricating oil compositions of reduced high-temperature high-shear viscosity |
摘要 |
A viscosity index improver, comprising an oil-soluble copolymer (A) having 20-70% by weight of alkyl acrylate units and 30-80% by weight of alkyl methacrylate units, and a viscosity index improver, comprising 20-80% by weight of an oil-soluble alkyl acrylate (co)polymer (A1) and 20-80% by weight of an oil-soluble methacrylate (co)polymer (A2), are capable of reducing high-temperature high-shear viscosity, particularly isoparaffin-containing high viscosity index oil, and provide luburicating oils useful as engine oil, gear lubricant and so on.
|
申请公布号 |
US5763374(A) |
申请公布日期 |
1998.06.09 |
申请号 |
US19950513562 |
申请日期 |
1995.08.10 |
申请人 |
SANYO CHEMICAL INDUSTRIES, LTD. |
发明人 |
SAKAI, KOUZOU;MATSUYA, HIDEHIKO;OHTA, YOSHIHISA |
分类号 |
C10M145/14;C10M169/04;(IPC1-7):C10M145/14 |
主分类号 |
C10M145/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|