Composite silicate materials

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United States of America Patent

PATENT NO 5767061
SERIAL NO

08788079

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention pertains to a crystalline hydrated layered sodium silicate/amorphous sodium silicate composite material with predetermined hardness ion sequestration properties achieved by control of the process for forming the material, and a process for making the material. The process for producing the crystalline hydrated layered sodium silicate/amorphous sodium silicate composite consists of producing a crystalline sodium disilicate by heating a sodium silicate at a specified time and temperature. The resulting material may include amorphous material, and the crystalline sodium disilicate can be either alpha-phase or delta-phase disilicate. This crystalline sodium disilicate is then hydrolyzed with up to 50.0 milliequivalents per gram of either H.sub.3 O.sup.+0 ions or OH.sup.- ions. The resulting material can sequester Ca.sup.2+ ions, Mg.sup.2+ ions, or both, depending on the results desired, processing conditions, and starting materials used.

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Patent Owner(s)

Patent OwnerAddress
PQ CORPORATIONVALLEY FORGE PA 19482-0840

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Borgstedt, Eric von Rehren Louisville, KY 4 12
Denkewicz, Jr Raymond P La Grange, KY 33 570
Gill, Petra M Warminster, PA 2 5

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