Zwitterion derivative and application to aqueous suspension properties
US6410671B1 · kind B1 · utility
5Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2001 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Apr 13, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to more or less substituted acrylamide or acrylate and zwitterion monomer hydrosoluble copolymers. The polymers have the general structure as follows: X and X′ comprise a N+—R1—Z− betaine, with Z− meeting at least one of the following formulas, corresponding to sulfobetaines and phosphobetaines respectively:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.