Method of making opacifying polymer particles
US9546297B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Dec 17, 2013 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Dec 17, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/2241
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of preparing an aqueous dispersion of opacifying polymer particles containing inorganic pigment particles therein is disclosed. The method yields hollow polymer particles containing pigment particles therein using a non-RAFT emulsion polymerization process by free radical polymerization. The technique is much faster and simpler than known RAFT methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.