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Calcium Sulfate

Calcium Sulfate-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Cementitious binders containing pozzolanic materials
Green Binder Technologies Ltd.
July 20, 2017 - N°20170204007

A cementitious composition including: a binder containing (a) 60-94%, by weight, of at least one pozzolanic material; (b) at least 0. 5% calcium sulfoaluminate (csa), by weight; (c) 1. 2-11% by weight, expressed as so3, of at least one inorganic sulfate selected from the group of sulfates consisting of a calcium sulfate hemihydrate, an anhydrous calcium sulfate, a calcium sulfate dihydrate, a sodium ...
Method for producing porous calcium deficient hydroxyapatite granules
Bioventus, Llc
July 13, 2017 - N°20170197833

The method is for producing porous calcium deficient hydroxyapatite granules and comprises the following steps: (a) subjecting granules of calcium sulfate anhydrous (csa), calcium sulfate dihydrate (csd) or calcium sulfate hemihydrate (csh) to an incubation in an alkaline aqueous solution having a ph-value of less than 10 and containing po43− ions; whereby the granules of calcium sulfate anhydrous (csa), calcium ...
Drilling fluid and method for drilling a wellbore
Canadian Energy Services L.p.
June 22, 2017 - N°20170174973

A method for drilling a wellbore into a formation. The method includes: providing a mixed metal-viscosified drilling fluid including at least 1% potassium salt and/or at least 0. 05% calcium sulfate; circulating the drilling fluid through the well; and drilling into a formation. An anionic thinner may be added if the clay concentration of the drilling fluid reaches a problematic level to ...
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Dimensionally stable geopolymer composition and method
United States Gypsum Company
June 22, 2017 - N°20170174570

A method for making geopolymer cementitious binder compositions for cementitious products such as concrete, precast construction elements and panels, mortar, patching materials for road repairs and other repair materials, and the like is disclosed. The geopolymer cementitious compositions of some embodiments are made by mixing a synergistic mixture of thermally activated aluminosilicate mineral, calcium sulfoaluminate cement, a calcium sulfate and ...
Freeze-thaw durable geopolymer compositions and methods for making same
United States Gypsum Company
June 15, 2017 - N°20170166481

A freeze-thaw durable, dimensionally stable, geopolymer composition including: cementitious reactive powder including thermally activated aluminosilicate mineral, aluminate cement preferably selected from at least one of calcium sulfoaluminate cement and calcium aluminate cement, and calcium sulfate selected from at least one of calcium sulfate dihydrate, calcium sulfate hemihydrate, and anhydrous calcium sulfate; alkali metal chemical activator; and a freeze-thaw durability component ...
Method for producing porous calcium deficient hydroxyapatite granules
Mathys Ag Bettlach
June 08, 2017 - N°20170158510

The method is for producing porous calcium deficient hydroxyapatite granules and comprises the following steps: (a) subjecting granules of calcium sulfate anhydrous (csa), calcium sulfate dihydrate (csd) or calcium sulfate hemihydrate (csh), the granules comprising interconnected pores with a minimum mean diameter of 3 microns, to a first incubation in an alkaline aqueous solution having a ph-value of less than 10 and ...
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Freeze-thaw durable geopolymer compositions and methods for making same
United States Gypsum Company
April 27, 2017 - N°20170113969

A freeze-thaw durable, dimensionally stable, geopolymer composition including: cementitious reactive powder including thermally activated aluminosilicate mineral, aluminate cement preferably selected from at least one of calcium sulfoaluminate cement and calcium aluminate cement, and calcium sulfate selected from at least one of calcium sulfate dihydrate, calcium sulfate hemihydrate, and anhydrous calcium sulfate; alkali metal chemical activator; and a freeze-thaw durability component ...
Cement and calcium sulfate based binder composition
Basf Se
April 20, 2017 - N°20170107153

The invention concerns a composition containing a) 2 to 80 weight % of ordinary portland cement with respect to the total weight of the composition b) 2 to 80 weight % of a calcium sulfate based binder with respect to the total weight of the composition, with the proviso that the weight ratio of a) ordinary portland cement to b) calcium sulfate based binder is from 95/5 ...
Brine treatment scaling control system and method
Carollo Engineers, Inc.
April 06, 2017 - N°20170096351

A system for brine treatment scaling control in a water treatment system is described. In the system, a concentrated brine stream influent may be treated in an electrodialysis-reversal process to produce a concentrated brine stream effluent and a lower salinity diluent water, which may be potable water effluent. The concentrated brine stream effluent may be processed in a brine treatment ...
High strength synthetic bone for bone replacement for increasing ompressive strength and facilitating blood circulation, ...
Ossein Co., Ltd.
March 09, 2017 - N°20170065740

The present invention relates to a high strength synthetic bone for bone replacement for increasing compressive strength and facilitating blood circulation, and a manufacturing method therefor, and provides the high strength synthetic bone for bone replacement in which calcium sulfate hemihydrate (csh) and nacl, in a particle state, penetrate into the pores of a porous inorganic material such as ...
Drilling fluid and method for drilling in coal-containing formations
Canadian Energy Services L.p.
March 02, 2017 - N°20170058178

A drilling fluid and method for drilling in a coal containing formation with a mixed metal-viscosified drilling fluid including at least 0. 05% calcium sulfate.
Method for purifying raw phosphoric acid (e.g. mga acid) by adding ashes originating from ...
Remondis Aqua Gmbh & Co. Kg
February 23, 2017 - N°20170050848

The present invention relates to a method for purifying raw phosphoric acid by adding ashes originating from waste incineration plants, as well as calcium hydroxide and at least one sulfide, and by wet-chemical digestion for obtaining (producing) calcium sulfate, pure phosphoric acid, metal salt solution and/or calcium hydrogen phosphates (e. G. Triple superphosphate).
Quick-drying building material composition based on a mineral hybrid binder
Sika Technology Ag
February 02, 2017 - N°20170029333

A quick-drying gypsum composition, in particular for use as gypsum filling compound and for the production of floor coverings, wherein the gypsum composition contains 20 to 70% of a mixture of calcium aluminate and calcium sulfate hemihydrate and/or anhydrite and/or calcium sulfate dihydrate as hydraulic binders and 30 to 80% by weight of fillers, and wherein the weight ratio of calcium aluminate ...
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Struvite-k and syngenite composition for use in building materials
Certainteed Gypsum, Inc.
January 12, 2017 - N°20170008804

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 ...
Coated building panels and articles containing calcium sulfate hemihydrate
United States Gypsum Company
December 08, 2016 - N°20160355438

A method of finishing an interior wall includes the steps of preparing a substrate of building panels comprising gypsum, cement or combinations thereof, said substrate having a surface, followed by applying a coating to the substrate, said coating comprising 1-30% by weight of a latex emulsion binder, 30-80% by weight calcium sulfate hemihydrate, up to about 8% by weight of a ...
Multiphasic bone graft substitute material
Agnovos Healthcare, Llc
December 08, 2016 - N°20160354514

The invention provides a particulate composition adapted for forming a bone graft substitute cement upon mixing with an aqueous solution, comprising i) a calcium sulfate hemihydrate powder, wherein the calcium sulfate hemihydrate is present at a concentration of at least about 50 weight percent based on the total weight of the particulate composition; ii) a monocalcium phosphate monohydrate powder; iii) a ...
Cementitious patch compositions and methods
United States Gypsum Company
November 24, 2016 - N°20160340251

A cementitious hydrating patch composition is provided with improved strength and abrasion resistance. The patch comprises portland cement in the amount from 2% to 10%, calcium sulfate hemihydrate in the amount from 2% to 30%, gypsum in the amount from 0% to 15%, calcium aluminate cement in the amount from 15% to 40%, calcium carbonate in the amount from 0% to 40%, at least one filler in the amount from 1% ...
Multiphasic bone graft substitute
Wright Medical Technology, Inc.
October 20, 2016 - N°20160303276

The invention provides a particulate composition adapted for forming a bone graft substitute cement upon mixing with an aqueous solution, comprising i) a calcium sulfate hemihydrate powder, wherein the calcium sulfate hemihydrate is present at a concentration of at least about 50 weight percent based on the total weight of the particulate composition; ii) a monocalcium phosphate monohydrate powder; iii) a ...
Liquid pothole filler composition and method
Wright Medical Technology, Inc.
September 22, 2016 - N°20160272815

A two component liquid pothole filler system comprises an anionic aqueous asphalt and chloroprene emulsion liquid component, which is mixed in situ with a solid component comprising crumb rubber, and in a preferable variation, a powdered mineral material, which is preferably calcined clay powder. The solid component also preferably includes a catalytic quantity of an activator, preferably a hydrous calcium ...
Method for strengthening 3d printed components
Barristo Enterprises Inc.
August 25, 2016 - N°20160243721

A method of strengthening printed components created by a three-dimensional printing technique utilizes cynoacrylate adhesives. The component is first printed in successive layers of calcium sulfate or similar materials on a three-dimensional printer. The component is next submerged in liquid adhesive contained in a vacuum chamber. A vacuum is applied for a time period to degas the voids and interstices ...
Struvite-k and syngenite composition for use in building materials
Certainteed Gypsum, Inc.
August 18, 2016 - N°20160236979

A composition and process for manufacture thereof used in hybrid inventive building materials comprising syngenite (k2ca(so4)2. H2o) and struvite-k (kmgpo4. 6h2o). Starting constituents include magnesium oxide (mgo), monopotassium phosphate (mkp) and stucco (calcium sulfate hemihydrate), mixed in predetermined ratios, cause reactions to proceed through multiple phases, which reactions variously are proceeding simultaneously and in parallel. Variables, ...
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