Polymer-encapsulated pigment particle
US10479847B2 · kind B2 · utility
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16References
23Claims
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Key dates
| Filing date | Jun 5, 2017 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Jun 5, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D151/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A polymer-encapsulated pigment dispersion is prepared from a mixture of (a) a carrier; (b) pigment particles; and (c) a polymeric dispersing agent having a polymer backbone, and an alkali-swellable copolymer component. The dispersing agent may provide efficient pigment wetting and dispersion using relatively low and thus economical dispersant amounts, and subsequently enable formation of polymer-encapsulating pigment dispersions that, when used in coatings, provide good opacity and good hiding characteristics, especially in titanium dioxide-containing coating compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.