Method of branching and cross-linking a polycarbonate resin
US6087468A · kind A · utility
5Cited by
18References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1997 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Oct 20, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The disclosure describes reacting a multi-functional phenolic or carboxylic branching agent with a transesterification catalyst to form an organic salt prior to reactive extrusion of said organic salt branching agent with linear polycarbonate resin as a means to dramatically increase the efficiency of the branching agent in the preparation of branched polycarbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.