Patent · US Active

Disalt as robust primary surfactant for calcium sulfate mixtures containing recycled gypsum

US11345636B2 · kind B2 · utility

0Cited by

2References

20Claims

0Family size

Assignees

BASF SE
Saint-Gobain Placo · FR

Inventors

Uwe Gehrig · St. Georgen, DE
Fabian Niedermair · Trostberg, DE
Joachim DENGLER · Trostberg, DE
Georg DAXENBERGER · Trostberg, DE
Hamouda Jaffel · Aulnay-sous-Bois, FR

Key dates

Filing date	Oct 18, 2018
Grant date	May 31, 2022
Priority date	—
Expiry date	Oct 18, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/91
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present invention relates to a gypsum composition comprising recycled gypsum and a foam former comprising at least one alpha-sulfo fatty acid disalt, to a process for production thereof and to an article comprising the gypsum composition of the invention. The present invention further relates to the use of a foam former comprising at least one alpha-sulfo fatty acid disalt for reducing the wet density of an aqueous gypsum composition having a recycled gypsum content of at least 0.5% by weight.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.