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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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Pourable compositions
United States Gypsum Company
December 07, 2017 - N°20170349492

The invention provides a pourable composition comprising calcium sulfate hemihydrate; optionally, cement; one or more anionic surfactants selected from alkyl anionic surfactants, alkyl ether anionic surfactants, alkyl aryl anionic surfactants, and combinations thereof; one or more set accelerator additives; and water.
Gypsum slurries with linear polycarboxylate dispersants
United States Gypsum Company
November 23, 2017 - N°20170334778

A gypsum slurry includes water, a hydraulic component including calcium sulfate hemihydrate and a linear polycarboxylate dispersant. The linear polycarboxylate anionic dispersant includes a first monomeric repeating unit and a second monomeric repeating unit. The first repeating unit of the linear polycarboxylate dispersant is an olefinic unsaturated carboxylic acid repeating unit or salt thereof. The second repeating unit of the ...
Antifouling coating composition, antifouling coating film formed using said composition, and coated article having antifouling ...
United States Gypsum Company
October 26, 2017 - N°20170306168

(here, r1 is a hydrogen atom or a methyl group; and r2, r3, and r4 are the same or different from each other and each represents a c3-6 alkyl group branched at the α-position or a phenyl group) and (b) an ethylenically unsaturated monomer copolymerizable with the triorganosilyl (meth)acrylate monomer; and (b) calcium sulfate hydrate.
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Gypsum based compositions and processes for making and using same
Georgia-pacific Gypsum Llc
September 21, 2017 - N°20170267587

Gypsum based compositions, processes for making same, and articles made therefrom. In one example, the gypsum based composition can include about 1. 5 wt % to about 3 wt % of a starch, about 11 wt % to about 14 wt % of a paper, about 0. 7 wt % to about 2. 3 wt % of vermiculite, about 1. 3 wt % to about 3 wt % of a plurality of reinforcing fibers, about 7 wt % to about 10 wt % of ...
Method for preparing a-calcium sulfate hemihydrate with calcium sulfate dihydrate
Shandong Borui New Material Technology Co., Ltd
August 31, 2017 - N°20170247262

A method for preparing α-calcium sulfate hemihydrate with calcium sulfate dihydrate includes steps of: uniformly mixing the calcium sulfate dihydrate with an additive solution, and obtaining a mixture, wherein weight percentages of the calcium sulfate dihydrate and the additive solution in the mixture are respectively 90. 00-95. 00% and 5. 00-10. 00%, and the additive solution contains water, inorganic salt, organic salt, ...
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 ...
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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 ...
Dimensionally stable geopolymer composition and method
United States Gypsum Company
June 22, 2017 - N°20170174571

A method for making geopolymer cementitious binder compositions for cementitious products such as concrete, precast construction elements and panels, mortar and 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 aluminate cement, a calcium sulfate and a chemical activator with water
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 ...
Bone void filler having calcium coatings
Warsaw Orthopedic, Inc.
May 04, 2017 - N°20170119926

A bone void filler material is provided for sustained release of a therapeutic agent. The bone void filler material comprising a biodegradable matrix having ceramic cement beads comprising calcium sulfate, and ceramic particles disposed within the matrix. The ceramic cement beads are loaded with the therapeutic agent to cause sustained release of the therapeutic agent. Methods of use are also ...
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 ...
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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 ...
Calcium sulfate composition comprising an additive
Basf Se
January 26, 2017 - N°20170022108

The invention relates to a composition comprising at least 10 wt. % of a binder based on calcium sulfate and 0. 005 to 5 wt. % of an additive made of at least one water-soluble salt of a multivalent metal cation, at least one compound which is capable of releasing an anion that forms a poorly soluble salt together with the multivalent metal cation, and at ...
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 ...
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