Process for the preparation of copolymers of maleic anhydride and alkyl vinyl ether
US5189122A · kind A · utility
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2References
20Claims
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Key dates
| Filing date | Jul 13, 1992 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Jul 13, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F216/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A copolymer of maleic anhydride and an alkyl vinyl ether is prepared with substantially reduced benzene content by first contacting the alkyl vinyl ether with activated charcoal and then reacting together the charcoal treated alkyl vinyl ether and maleic anhydride in the presence of a free radical initiator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.