Method for the concentration of water-in-oil emulsions of water soluble vinyl addition polymers
US4021399A · kind A · utility
15Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1976 |
| Grant date | May 3, 1977 |
| Priority date | — |
| Expiry date | Mar 12, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F6/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for the concentration of water-in-oil emulsions of water soluble vinyl addition polymers is disclosed. The process involves distilling the water-in-oil emulsion of the water soluble vinyl addition polymer under a vacuum while maintaining the water-oil phase ratio substantially equal to the starting latex. Maintaining this ratio allows latices of this type to be concentrated to as high as 70% by weight polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.