Bi-phase initiator system for water-in-oil emulsion polymers
US4739008A · kind A · utility
21Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1986 |
| Grant date | Apr 19, 1988 |
| Priority date | — |
| Expiry date | Nov 18, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water-in-oil emulsions of monomers which form water-soluble polymers are polymerized in the presence of a biphase initiator system containing both an oil-soluble initiator and a water-soluble initiator or activator or alternatively a water-soluble initiator and an oil-soluble activator which results in polymers having improved performance characteristics. In addition, the system permits the satisfactory polymerization of monomers which could not have been reproducibly polymerized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.