Polymer-encapsulated pigment particle
US10233329B2 · kind B2 · utility
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14References
19Claims
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Key dates
| Filing date | Jan 18, 2016 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Jan 18, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09C3/10
- 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 a zwitterionic polymer side chain comprising anionic and cationic groups. The dispersing agent may provide efficient pigment wetting and dispersion using relatively low and thus economical pigment amounts, with good opacity and good hiding characteristics, especially in titanium dioxide-containing coating compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.