Process for the preparation of polycarbonates
US8592550B2 · kind B2 · utility
14Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2009 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Feb 13, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D169/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Characterized in that the polymerization is carried out in a single step in the presence of a chain transfer agent. Preferred chain transfer agents are polyols. The invention also relates to branched polycarbonates that have functional hydroxyl end-groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.