Process of polymerizing vinyl chloride with hydroxylamines
US6340729B1 · kind B1 · utility
4Cited by
8References
13Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 11, 2001 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Jul 11, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F14/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In the process according to the invention for the aqueous suspension polymerization of vinyl chloride, alone or as a mixture with another vinyl monomer, the polymerization initiator comprises at least one compound chosen from dialkyl peroxydicarbonates, peroxy-tert-alkanoates and diacyl peroxides and use is made, as agent for halting the polymerization, of a mono- or disubstituted hydroxylamine. The resins thus obtained exhibit improved color and heat stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.