Aqueous dispersion of polymer particles with acorn morphology
US10287450B2 · kind B2 · utility
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5References
10Claims
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Key dates
| Filing date | Dec 4, 2017 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Dec 4, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/53
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a composition comprising 1) an aqueous dispersion of polymer particles having a core-shell morphology wherein the core protuberates from the shell and comprises less than 0.09 structural units of a phosphorus acid monomer, based on the weight of the core; and 2) pigment particles with a refractive index in the range of from 2.0 and 3.0, wherein the pigment volume concentration of the pigment particles is at least 11. The composition of the present invention is useful for improving block resistance in coatings applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.