Emulsion polymer compositions and use thereof in low odor waterproofing coatings
US12122865B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2023 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Dec 28, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/262
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to aqueous polymer dispersions comprising polymerized units issued from the following monomers with related weight proportions based on 100 parts of weight of a)+b): a) 50 to 90% of a monoethylenically unsaturated non-ionic monomer, b) 10 to 50% of vinyl aromatic monomer or methyl methacrylate, c) 1 to 5% of a hydroxy-containing (meth)acrylate, d) 0.1 to 3% of acid monomer selected from d1) acid monomer selected from monocarboxylic or dicarboxylic acid monomers and d2) acid monomer selected from phosphorous-based or sulfur-based strong acid monomers or/and their salts, or from the mixtures of d1) and d2), e) 0.001 to 0.5% of chain transfer agent, and f) 0 to 1% one of internal crosslinker bearing at least two copolymerisable ethylenic unsaturations, the polymer having a Tg measured by DSC from −30 to 0° C. and a gel content of 0 to 60%, formed during polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.