Aromatic etherketone/sulphone copolymers
US4446294A · kind A · utility
13Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1983 |
| Grant date | May 1, 1984 |
| Priority date | — |
| Expiry date | Jun 15, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/05
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Amorphous aromatic etherketone/sulphone copolymers, normally of reduced viscosity.gtoreq.0.8, containing 15 to 70 mole % (preferably 20 to 60 mole %) of repeat units of formula ##STR1## and correspondingly 85 to 30 mole % (preferably 80 to 40 mole %) of repeat units of formula ##STR2##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.