Patent · US Active

Gypsum building boards

US8216360B2 · kind B2 · utility

4Cited by

1References

24Claims

0Family size

Assignee

BPB Limited · GB

Inventors

Nathalie Agnes Gaillard · Paris, FR
Emmanuel Geeraert · Kapellen, BE

Key dates

Filing date	Aug 28, 2007
Grant date	Jul 10, 2012
Priority date	—
Expiry date	Aug 28, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2111/0062
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method of producing gypsum building board, comprises allowing a layer of an aqueous gypsum slurry to set so as to form a board, in which the improvement comprises mixing the gypsum slurry with an aqueous foam produced by foaming water containing at least one non-ionic alkylpolysaccharide foaming agent of the general formula (I)R—O-(G)x (I)where: R represents a linear or branched alkyl group having from 6 to 20 carbon atoms; G represents a reducing saccharide moiety connected to R via an ethereal O-glycosidical bond; and x is 1 to 10.

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