Gypsum products utilizing a two-repeating unit dispersant and a method of making them
US7776462B2 · kind B2 · utility
23Cited by
52References
8Claims
0Family size
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Key dates
| Filing date | Nov 10, 2009 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Nov 10, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/665
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A gypsum slurry includes water, a hydraulic component including stucco and a polycarboxylate dispersant. The dispersant has two repeating units wherein the first repeating unit is an olefinic unsaturated mono-carboxylic acid repeating unit or an ester or salt, and the second repeating unit is a vinyl or allyl group bound to a polyether by an ether linkage. The slurry can be made into a gypsum panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.