Copoly (carbonate/phosphonate) compositions
US4223104A · kind A · utility
20Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1978 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Aug 11, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Improved copoly(carbonate/phosphonate) compositions formed by reaction of a dihydric phenol, a carbonate precursor, and an organophosphorus dihalide are disclosed. The inherent viscosity and melting point of such compositions is increased by the presence of an effective amount of a chain branching agent, optionally in the additional presence of a chain terminating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.