Copolymers of unsaturated fatty esters, their use as viscosity improver and lubricating oil containing said copolymers
US5534175A · kind A · utility
6Cited by
7References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 11, 1994 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Nov 11, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2209/084
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Copolymers of unsaturated fatty esters capable of being obtained by copolymerization in a mineral oil of a percentage a) of an ester of a carboxylic acid A.sub.1, of a percentage b) of an ester of a carboxylic acid A.sub.2 and a percentage c) of an ester of a carboxylic acid A.sub.3, wherein a), is between 12 and 20%, c) is between 14 and 30% and b), which is preferably 72 and 45%, is such that a)+b)+c)=100%. The copolymers in accordance with the invention are reemployed as viscosity improver in lubricating oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.