Aromatic polyamides from N,N'-bis(p-aminobenzoyl)ethylene diamine
US4072664A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1975 |
| Grant date | Feb 7, 1978 |
| Priority date | — |
| Expiry date | Feb 14, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aromatic polyamide comprising (1) a unit of the formula: ##STR1## and (2) a unit of the formula: ##STR2## and being excellent in strength, rigidity and heat resistance and improved in light resistance, flexibility and wear resistance, which can be produced by polycondensation of a diamine component comprising N,N'-bis(p-aminobenzoyl)-ethylenediamine and p-phenylenediamine, the content of the N,N'-bis (p-aminobenzoyl)ethylenediamine being from about 0.6 to 50 mol %, with a dicarboxylic acid component comprising terephthalic acid or its reactive derivative in a substantially equimolar amount to the diamine component in an amide polar solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.