The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 2017
Filed:
Dec. 28, 2007
Applicants:
Xuming Wang, Mundelein, IL (US);
Steven W. Sucech, Lake Villa, IL (US);
Inventors:
Xuming Wang, Mundelein, IL (US);
Steven W. Sucech, Lake Villa, IL (US);
Assignee:
UNITED STATES GYPSUM COMPANY, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
C04B 11/00 (2006.01); B32B 3/26 (2006.01); C04B 38/10 (2006.01); B32B 13/08 (2006.01); C04B 24/16 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
C04B 38/10 (2013.01); B32B 13/08 (2013.01); C04B 24/16 (2013.01); C04B 2111/0062 (2013.01); Y10T 428/24999 (2015.04);
Abstract
Compositions and methods for reducing the impact of hard water on gypsum board foaming are provided. The compositions include adding a foam to water and a calcined slurry. The foam includes water, dispersed air and a surfactant. Surfactants for use include a hydrophobic portion having an alkyl chain length distribution of about 20% to about 60% C8 chains; about 20% to about 60% C10 chains; about 14% to about 36% C12 chains and about 2% to about 20% C14 chains and also having a hydrophilic portion having about 0.2 to 3.0 ethoxy groups.