Preparation of a coatings formulation with alkali swellable polymer particles
US11161986B2 · kind B2 · utility
0Cited by
5References
10Claims
0Family size
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Key dates
| Filing date | Feb 26, 2018 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Aug 11, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2433/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process comprising the step of contacting an aqueous dispersion of swelled polymer particles with a rheology modifier and a binder to form a coatings composition with a VOC of less than 50 g/L. The swelled polymer particles arise from neutralization of alkali swellable polymer particles having a high acid core content and a low Tg shell. The composition arising from the process of the present invention is useful for improving open time, especially for low VOC coatings applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.