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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.:

US 10472284 B1

PDFFull Text
Date of Patent:
Nov. 12, 2019

Filed:

Aug. 17, 2016

Struvite-k and syngenite composition for use in building materials

Applicant:

Certainteed Gypsum, Inc., Malvern, PA (US);

Inventors:

Robert J. Hauber, Land O Lakes, FL (US);

Gerald D. Boydston, Cody, WY (US);

Nathan Frailey, Cody, WY (US);

Severine Lamberet, Villars les Dombes, FR;

Gaurav V. Pattarkine, Shrewsbury, MA (US);

Isaac K. Cherian, Shrewsbury, MA (US);

Sergio Centurione, North Grafton, MA (US);

Anirban Ghosh, Mississauga, CA;

Assignee:

CertainTeed Gypsum, Inc., Malvern, PA (US);

Attorney:

McDonnell Boehnen Hulbert & Berghoff LLP

Primary Examiner:

James E McDonough

Int. Cl.
CPC ...
C04B 12/02 (2006.01); C04B 28/34 (2006.01); C04B 11/28 (2006.01); C04B 22/06 (2006.01); C04B 7/00 (2006.01); C04B 7/34 (2006.01); C04B 28/00 (2006.01); C04B 32/00 (2006.01); C04B 9/04 (2006.01); C04B 11/00 (2006.01); C04B 28/14 (2006.01); C04B 28/30 (2006.01); C04B 9/00 (2006.01); C04B 111/00 (2006.01); C04B 111/28 (2006.01);
U.S. Cl.
CPC ...
C04B 28/344 (2013.01); C04B 11/28 (2013.01); C04B 12/025 (2013.01); C04B 12/027 (2013.01); C04B 22/066 (2013.01); C04B 28/34 (2013.01); C04B 2111/0062 (2013.01); C04B 2111/28 (2013.01);
Abstract

A composition and process for the manufacture thereof for use in a hybrid building material comprising at least in part Syngenite (KCa(SO).HO) and Struvite-K (KMgPO·6HO). Specified constituents, including magnesium oxide (MgO), monopotassium phosphate (MKP) and stucco (calcium sulfate hemihydrate) are mixed in predetermined ratios and the reaction proceeds through multiple phases reactions which at times are proceeding simultaneously and in parallel and reaction may even compete with each other for reagents if the Struvite-K reaction is not buffered to slow down the reaction rate). A number of variable factors, such as water temperature, pH mixing times and rates, have been found to affect resultant reaction products. Preferred ratios of chemical constituents and manufacturing parameters, including predetermined and specified ratios of Struvite-K and Syngenite may be provided for specified purposes, optimized in respect of stoichiometry to reduce the combined heat of formation to non-destructive levels.

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