Ethynyl-containing aromatic polyamide resin
US4752642A · kind A · utility
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3Claims
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Key dates
| Filing date | Sep 16, 1986 |
| Grant date | Jun 21, 1988 |
| Priority date | — |
| Expiry date | Sep 16, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aromatic polyamide resins having repeating units, each containing at least one m-ethynyl amido subunit: ##STR1## These resins can be thermally treated to undergo intra-molecular cyclization, without evolution of volatiles, into polyimidines containing the following subunit. ##STR2##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.