Compositions of aromatic polyetherketones and glass and/or carbon fibres
US4360630A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1980 |
| Grant date | Nov 23, 1982 |
| Priority date | — |
| Expiry date | Nov 25, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K7/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A melt-fabricatable or melt-fabricated composition comprising (i) a crystalline thermoplastic aromatic polyetherketone containing the repeat unit ##STR1## alone or in conjunction with other repeat units said polymer having an inherent viscosity of at least 0.7 and (ii) a glass and/or carbon fibre reinforcing agent, which composition is melt-fabricatable into a composition exhibiting, or alternatively (if melt-fabricated) exhibits, an increase in heat deflection temperature (HDT) of at least 3.degree. C. per 1% by weight of reinforcing agent above the HDT of the unreinforced polyetherketone and an increase in flexural modulus of at least 0.2 GN.sub.m.sup.-2 per 1% by weight of reinforcing agent above the flexural modulus of the unreinforced polyetherketone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.