PREPARATION OF AN AQUEOUS DISPERSION OF OCCLUDED POLYMER PARTICLES
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United States of America Patent
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Issued Date -
Feb 16, 2023
app pub date -
Nov 19, 2020
filing date -
Nov 19, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a process for preparing an aqueous dispersion of multiphase occluded polymer particles comprising the steps of a) contacting, under emulsion polymerization conditions, first monomers and a chain transfer agent to form an aqueous dispersion of first polymer particles having a Tg in the range of from −30° C. to 30° C.; then b) contacting the aqueous dispersion of first polymer particles with a second monomer under emulsion polymerization conditions to form an aqueous dispersion of second polymer particles occluded within the first polymer particles, wherein the first monomers a phosphorus acid monomer or a salt thereof; and the second monomer comprises at least 90 weight percent methyl methacrylate. The aqueous dispersion of occluded polymer particles arising from the process of the present invention is useful in a formulation that can be used to prepare a water-resistant blister free LASD coating.
First Claim
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Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| CN | B | CN114787205 | Nov 19, 2020 |
| WO | A1 | WO2021126454 | Nov 19, 2020 |
| KR | A | KR20220118472 | Nov 19, 2020 |
| JP | B2 | JP7651572 | Nov 19, 2020 |
| MX | A | MX2022007243 | Nov 19, 2020 |
| EP | B1 | EP4077417 | Nov 19, 2020 |
| CA | C | CA3161860 | Nov 19, 2020 |
International Classification(s)
- 2020 Application Filing Year
- C08F Class
- 2155 Applications Filed
- 1075 Patents Issued To-Date
- 49.89 % Issued To-Date
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- C08F Class
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