Process for the preparation of high-solids, low-viscosity latex using selective hydrophilic macro-raft agents
US12252560B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Apr 14, 2020 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Mar 7, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2438/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Processes to prepare aqueous polymer dispersions are provided, as well as compositions thereof, which have high solids content (e.g., 50%) with low viscosity. The process uses a selective hydrophilic macro-RAFT agent of formula (I), and is substantially free of surfactants. This process can be used to make latex polymers with good stability, which can be used widely in coatings (e.g., architectural paints, stone paints, industrial coatings, wood coatings, etc.), adhesives, sealants and mastic compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.