Nonionic associative thickeners
US4722962A · kind A · utility
36Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Jun 12, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Nonionic associative thickeners suitable for use in aqueous coating compositions comprise an aqueous solution polymer of (a) from about 40 percent to about 98 percent, preferably from 60 to 95 percent, by weight of a monoethylenically unsaturated monomer such as acrylamide, N,N-dimethyl acrylamide, vinyl pyrrolidone, hydroxyethyl acrylate and mixtures thereof; and (b) from about 2 percent to about 60 percent, preferably from 5 to 40 percent, by weight of a nonionic urethane monomer which is the urethane reaction product of a monohydric nonionic surfactant with a monoethylenically unsaturated monoisocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.