Polymerization of ethylenically unsaturated monomer
US3978032A · kind A · utility
17Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1975 |
| Grant date | Aug 31, 1976 |
| Priority date | — |
| Expiry date | Feb 28, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ethylenically unsaturated material susceptible to free-radical polymerization, e.g., vinyl chloride monomer, is polymerized, e.g., in an aqueous medium, with an initiator system comprising, in combination, alkaline buffering reagent, e.g., sodium bicarbonate, organic acid anhydride, e.g., isobutyric anhydride, peroxygen compound selected from organic peroxy acid (peracid), e.g., peracetic acid, and hydrogen peroxide, and alkyl haloformate, e.g., ethyl chloroformate. The initiator system is added to the polymerization medium to form the initiator(s) in situ.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.