Process for the preparation of copolyphosphonates of high notched impact strength
US4782123A · kind A · utility
13Cited by
7References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 9, 1987 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Nov 9, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G79/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Extrusion of solutions of aromatic polyesters and aromatic polyphosphonates gives copolyphosphonates with improved notched impact strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.