Amphoteric polymer composition
US10160880B2 · kind B2 · utility
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3References
8Claims
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Key dates
| Filing date | May 29, 2012 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Sep 14, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/585
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a composition comprising an amphoteric polymer having pendant acid groups, or salts thereof, and pendant mono- or dialkylamino ethylene oxide groups or alkylammonium ethylene oxide groups characterized by either of the following formulas: where R1-R3 and X− are as defined herein. The composition of the present invention improves hiding efficiency for coating compositions formulated using associative rheology modifiers, binders, and titanium dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.