Thermoset polymers and prepolymers obtained by polycondensation of alkyl pyridine with hydroxyl aromatic monoaldehydes
US4525573A · kind A · utility
2Cited by
2References
18Claims
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Key dates
| Filing date | Aug 24, 1984 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Aug 24, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J5/249
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The object of the invention are new thermoset polymers and prepolymers, a process for their preparation, and their uses. The new thermoset prepolymers consist, at least in part, of the polycondensation products of one or more pyridine derivatives containing at least two activated methyl groups with one or more aromatic monoaldehydes containing at least one hydroxyl group. These prepolymers are used to prepare composite materials, in particular laminates, that can be used at high temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.