Processes for preparing aromatic polycarbonates
US5606007A · kind A · utility
47Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1993 |
| Grant date | Feb 25, 1997 |
| Priority date | — |
| Expiry date | May 21, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/42
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
According to the present invention, there is provided an improvement which comprises adding an acid compound and if necessary an epoxy compound to a reaction product resulting from melt polycondensation reaction of an aromatic dihydroxy compound with a carbonic acid diester in the presence of an alkaline compound catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.