Aromatic polyetherketones
US4657990A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1985 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Jan 10, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/48
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A crystallizable thermoplastic aromatic polyetherketone, the polymeric chain of which contains the repeat unit EQU --Ar.sub.1 --CO--Ar.sub.2 --O-- where Ar.sub.1 and Ar.sub.2 are aromatic radicals which may be the same or different and comprise at least one aromatic ring, the polymeric chains having terminal ionic groups --A--X, where A is an anion and X is a metal cation. The anion is preferably selected from sulphonate, carboxylate, sulphinate, phosphonate, phosphate, phenate and thiophenate and the cation is preferably alkali metal or alkaline earth metal. The products may be used in blends with other polyetherketones as a nucleant for the other polyetherketones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.