Hydrophobically modified pigment composition
US12297358B2 · kind B2 · utility
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2References
8Claims
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Key dates
| Filing date | Oct 1, 2020 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Jun 23, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K9/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is a composition comprising an aqueous dispersion of metal oxide pigment particles coated with an organosilane polymer comprising structural units of an alkyltrihydroxysilane or a salt thereof, a dialkyldihydroxysilane or a salt thereof, and an ancillary alkylsilane triol. The composition of the present invention provides hydrophobicity to pigment particles, thereby imparting water resistance, and allows for high loadings of pigment in water without increased viscosity. The dispersion is further useful for providing stain and corrosion resistance in coatings arising from paints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.