Surfactant for self-inverting polyacrylmides
US5925714A · kind A · utility
21Cited by
24References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1994 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | Mar 4, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Improved water soluble vinyl addition polymers for use as thickening and flocculating agents in water purification treatment, paper manufacture and waste water treatment are prepared using alkoxylated castor oil as an activation release agent. The release agent is biodegradable thereby making the overall product process more environmentally friendly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.