Struvite-K and syngenite composition for use in building materials

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United States of America Patent

PATENT NO 9422193
APP PUB NO 20150059621A1
SERIAL NO

14457826

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Abstract

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A composition and process for the manufacture thereof for use in a hybrid building material comprising at least in part Syngenite (K2Ca(SO4)2.H2O) and Struvite-K (KMgPO4.6H2O). 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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Patent Owner(s)

Patent OwnerAddress
CERTAINTEED GYPSUM INC20 MOORES ROAD MALVERN PA 19355

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boydston, Gerald D Cody, US 25 199
Centurione, Sergio North Grafton, US 4 19
Cherian, Isaac K Shrewsbury, US 29 728
Frailey, Nathan Cody, US 8 26
Ghosh, Anirban Cambridge, US 26 275
Hauber, Robert J Land O Lakes, US 28 425
Lamberet, Severine Gagny, FR 4 19
Pattarkine, Gaurav V Shrewsbury, US 5 26

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