Copolymers of dioxolanes and maleic anhydride
US5019635A · kind A · utility
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8Claims
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Key dates
| Filing date | Mar 23, 1990 |
| Grant date | May 28, 1991 |
| Priority date | — |
| Expiry date | Mar 23, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F222/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Copolymers are made by reacting maleic anhydride or a related compound with a 4-vinyl-1,3-dioxolane in the presence of a free radical initiator. The dioxolane reactant can be made by reacting a ketone with 3,4-epoxy-1-butene, or a substituted derivative thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.