Alkyl sulfate / alkyl ether sulfate gypsum foamer
US12180116B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 19, 2023 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | May 19, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/0062
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A surfactant composition is disclosed comprising a first alkyl sulfate surfactant, optionally a second alkyl sulfate surfactant, and optionally an alkyl ether sulfate. The first and second alkyl sulfate surfactants have Formula (1): R1—OSO3−+M1 (1) and the alkyl ether sulfate has Formula (2): R2—(OCH2CH2)yOSO3−+M2 (2) in which R1 and R2 are independently selected linear or branched alkyl or a combination thereof having from 6 to 14 carbon atoms, y has an average value from 0.1 to 5, and M1 and M2 are cations independently selected from sodium, calcium, ammonium, or a combination of two or all of these. Use of the composition as a foaming agent for gypsum slurries, and of the gypsum slurries for formation of gypsum boards, are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.