Solid state cross-linked polymer
US4596858A · kind A · utility
11Cited by
7References
5Claims
0Family size
Inventors
Key dates
| Filing date | Jun 20, 1984 |
| Grant date | Jun 24, 1986 |
| Priority date | — |
| Expiry date | Jun 20, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2810/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Cross-linked polymeric gels or films are prepared by dissolving in a suitable solvent a linear polymer or polymers containing pendant amidocarbonyl or oxycarbonyl groups, hydroxyl groups present as either pendant groups from the polymer or as a low molecular weight polyol, and a strongly acidic catalyst (which may also be a pendant group on a polymer). The solvent is removed by coagulation and/or drying and the dry material is heat-cured, thus cross-linking and insolubilizing the polymer or polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.