United States Gypsum Company

Paul J Henkels

Qiang Yu

Steven W Sucech

Frederick Thomas Jones

Brent E Groza

Raymond John Mlinac

Raymond J Mlinac

The invention provides a set gypsum-containing product having increased resistance to permanent deformation and a method for preparing it comprising forming a mixture of a calcium sulfate material, water, and an appropriate amount of one or more enhancing materials chosen from condensed phosphoric acids, each of which comprises 2 or more phosphoric acid units; and salts or ions of condensed phosphates, each of which comprises 2 or more phosphate units. The mixture is then maintained under conditions sufficient for the calcium sulfate material to form a set gypsum material.

Gypsum-containing product

Gypsum-containing product and gypsum board

Gypsum-containing product and method for producing same

Gypsum-containing board and tile, and method for producing same

A method for producing a set gypsum-containing product comprising an interlocking matrix of set gypsum wherein said method comprises applying to said set gypsum one or more enhancing materials selected from the group consisting of phosphoric acid; condensed phosphoric acids, each of which comprises 2 or more phosphoric acid units; and salts or ions of condensed phosphates, each of which comprises 2 or more phosphate units, and monobasic salts or monovalent ions of orthophosphates.

Gypsum-containing board and tile, and method for producing gypsum-containing board and tile

Gypsum-containing product having increased resistance to permanent deformation and method and composition for producing it

Growing community of inventors

Arlington Heights, IL, United States of America

Paul J Henkels