Method for the epoxidation of unsaturated polymers
US5789512A · kind A · utility
4Cited by
1References
16Claims
0Family size
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Key dates
| Filing date | Dec 23, 1996 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Dec 23, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08C19/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for epoxidizing unsaturated polymers comprising reacting an unsaturated polymer with hydrogen peroxide in the presence of (a) tungstic acid or its metal salts, (b) phosphoric acid or its metal salts, and (c) at least one phase transfer catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.