Nodular copolymers formed of alpha-olefin copolymers coupled by non-conjugated dienes
US4882406A · kind A · utility
45Cited by
24References
51Claims
0Family size
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Key dates
| Filing date | Mar 5, 1986 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Mar 5, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2020/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Nodular copolymer and method of preparing a nodular copolymer by preparing a copolymer chain and coupling it with a coupling agent. The copolymers which form the nodular copolymer are formed of first and second segments, of which the second segments, containing the coupling agent, react to form the nodular region. The nodular copolymer is particularly useful as a lube oil additive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.