Poly(arylene ether ketones) having biphenylene-4,4'-dicarbonyl groups
US4855387A · kind A · utility
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15Claims
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Key dates
| Filing date | Jul 9, 1987 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Jul 9, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G61/127
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel copoly(arylene ether ketones) having a biphenylene-4,4'-dicarbonyl group in their backbone, comprising PA1 (A) a repeat unit ##STR1## and (B) a repeat unit selected from the group consisting of ##STR2## where R, which is the same in each of repeat units (A) and (B), is a direct bond, ##STR3## the molar ratio of repeat units (A) to repeat units (B) being between about 10:90 and about 70:30.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.