Oil-soluble anionic-graft polymer of ethylene-propylene copolymer and anionically polymerizable monomer having utility as multifunctional V. I. improver for lubricating oils
US4051050A · kind A · utility
17Cited by
3References
24Claims
0Family size
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Key dates
| Filing date | Apr 26, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Apr 26, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An oil-soluble anionic-graft polymer of an anionically polymerizable monomer, preferably an ethylenically unsaturated nitrogen-containing monomer, e.g. acrylonitrile, and an anion of an oxidized copolymer of ethylene and at least one C.sub.3 to C.sub.50 alpha monoolefin, e.g. propylene, said anionic-graft polymer in its preferred form containing from about 0.005 to 2% by weight nitrogen and having a number average molecular weight of from about 1000 to 500,000, has utility as a multifunctional V.I. improver or dispersant for lubricating oils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.