Molecular weight reduction of olefin copolymers using low-sulfur oils
US6362286B1 · kind B1 · utility
5Cited by
1References
6Claims
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Key dates
| Filing date | Dec 13, 1999 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Dec 13, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for reducing the molecular weight of olefin copolymers comprises contacting an olefin copolymer and a base oil containing less than about 0.05 wt. % sulfur in the presence of oxygen and at a temperature of at least about 60° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.