Copolymers derived from 1,3 dioxepins and maleic anhydride or maleimides and methods
US4384093A · kind A · utility
17Cited by
10References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 15, 1981 |
| Grant date | May 17, 1983 |
| Priority date | — |
| Expiry date | Apr 15, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Copolymers and terpolymers formed by reacting either 4,7-dihydro-1,3-dioxepins or 6,7-dihydro-1,3-dioxepins with maleic anhydride and/or a maleimide. The copolymers are characterized as linear, low molecular weight, water soluble alternating copolymers. These copolymers are useful as a water soluble polymer, as epoxy resin modifies and curing agents. The copolymers formed from 4,7-dihydro-1,3-dioxepins and maleic anhydride can be rearranged to form a poly (.gamma.-crotonlactone) having the following general formula: ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.