Method of preparing a gypsum-based product
US12098097B2 · kind B2 · utility
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4References
12Claims
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Key dates
| Filing date | Nov 7, 2019 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Oct 29, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00629
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of preparing a gypsum-based product comprises the steps of mixing calcined gypsum with polymer particles and water to provide a slurry. The polymer particles comprise principally polyvinyl acetate, and have a particle size distribution, measured using laser diffractometry, such that particles having a diameter of 4.5 μm or less provide at least 90% of the total particle volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.