Patent · US Active

Methods and systems for preparing gypsum slurry containing a cellulose ether

US7803296B2 · kind B2 · utility

19Cited by

36References

22Claims

0Family size

Assignee

UNITED STATES GYPSUM COMPANY · US

Inventors

David Paul Miller · Lindenhurst, US
Qingxia Liu · Vernon Hills, US
Qiang Yu · Shanghai, CN

Key dates

Filing date	Jun 11, 2007
Grant date	Sep 28, 2010
Priority date	—
Expiry date	Apr 25, 2028

Classification

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

Abstract

A method for forming a gypsum slurry comprises the steps of combining gypsum and water to form a slurry, combining cellulose ether with at least a second material configured to delay solubilization of the cellulose ether, and adding the combined cellulose ether and at least a second material to the slurry.

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