Bi(phosphine) photoinitiators and chain transfer agents
US5436280A · kind A · utility
4Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1993 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Nov 17, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2/46
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Vinyl monomers are polymerized in the presence of bi(phosphine oxides) and bi(phosphine sulfides) which can function as photoinitiators and chain transfer agents in the polymerization of vinyl monomers. The incorporation of such organo-phosphorous compounds into such polymers either as an integral part thereof, or as an admixture, results in improved thermal stability of the polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.