Branched polystyrene production by free radical bulk polymerization
US5473031A · kind A · utility
7Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1995 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Feb 10, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F212/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is a process for preparing a branched polymer from a vinyl aromatic monomer comprising, copolymerizing the vinyl aromatic monomer with a monomer pair, wherein the monomer pair consists of two different monomers containing functionalities which are substantially nonreactive with each other under the conditions of copolymerization, and heating the copolymer produced to a temperature such that the functionalities react with each other to form branches within the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.