Heat-resistant flameproof compositions
US4067897A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1976 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | Mar 3, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2721
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Heat-curable compositions are disclosed based on a prepolymer obtained by reacting (a) a N,N'-bis-imide of an unsaturated dicarboxylic acid of the formula ##STR1## in which D represents a divalent radical containing a carbon-carbon double bond and A is a divalent radical which possesses at least 2 carbon atoms, and (b) a di-primary diamine of the general formula NH.sub.2 --B -- NH.sub.2, in which B represents a divalent radical which does not have more than 30 carbon atoms, in a ratio of number of mols of bis-imide/number of mols of diamine of between 1.2 and 5, the composition containing up to 15% by weight, relative to the weight of the prepolymer, of red phosphorus in the form of a powder having a mean particle size of less than 200.mu..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.