Method of preparing an aromatic polycarbonate with phenolic chloroformate chain stopper
US4864011A · kind A · utility
13Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1987 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Sep 18, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a method of preparing aromatic polycarbonate according to the two-phase interface process. The molecular weight is controlled by the addition of a chain stopper. The use of a phenolic chloroformate as a chain stopper leads to a polycarbonate having a low content of volatile constituents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.