Method of preparing polyester carbonates
US4286083A · kind A · utility
50Cited by
2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1979 |
| Grant date | Aug 25, 1981 |
| Priority date | — |
| Expiry date | Apr 30, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/24
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel process is disclosed for the preparation of copolyesters containing both carboxylate and carbonate groups. The process comprises reacting a carbonyl halide with a difunctional carboxylic acid and a dihydroxy compound in a reaction media which comprises water and a water immmiscible solvent in the presence of a tertiary amine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.