Process for preparing an aqueous dispersion of polymeric microspheres
US10723838B2 · kind B2 · utility
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2References
6Claims
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Key dates
| Filing date | Aug 29, 2018 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Dec 18, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to composition comprising an aqueous dispersion of microspheres and a class of a nonionic polyalkylene oxide of a distyryl or tristyryl phenol or an anionic polyalkylene oxide salt of a distyryl or tristyryl phenol and a process for preparing the composition. The microspheres have an average particle size in the range of from 1 μm to 25 μm, as well as a low coefficient of variation and low gel concentration; the composition is useful in coatings applications, especially where a matte finish is desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.