181 |
Gypsum panels, systems, and methods |
US15180589 |
2016-06-13 |
US09739059B2 |
2017-08-22 |
Vincent B. Thomas; Rochelle Bradford; Christopher J. Sanders; Yi-Hsien Harry Teng |
Gypsum panels, sheathing systems, and methods of making and using the same are provided. A gypsum panel includes a gypsum core associated with a first fiberglass mat having a continuous barrier coating, the coating penetrating a portion of the first fiberglass mat opposite the gypsum core, wherein gypsum penetrates a remaining fibrous portion of the first fiberglass mat such that voids in the first fiberglass mat are substantially eliminated. A building sheathing system includes at least two gypsum panels and a seaming component to provide a seam at an interface between the gypsum panels. |
182 |
Compositions and methods for reducing lime bucking in plaster products |
US14804618 |
2015-07-21 |
US09682887B2 |
2017-06-20 |
Jeffrey F. Grussing; Samar Emami; Trevor S. Rische |
Methods of treating lime bucking in a plaster slurry are described. The method involves providing a slurry exhibiting lime bucking having a cone penetration of less than 10 mm at a consistency of 60 cc, comprising: water; calcium sulfate hemihydrate; and hydrated lime; and mixing an effective amount of a dispersant comprising a low intensity dispersant into the slurry so that the cone penetration increases and wherein the cone penetration is 10 mm or more at 10 minutes after addition of the dispersant at a consistency of 60 cc; and applying the plaster slurry containing the dispersant to a substrate. Veneer plaster dry component mixtures having reduced lime bucking when made into a slurry containing a low intensity dispersant, or hydrated lime coated with wax or a dibenzoate plasticizer are also described. |
183 |
Method for producing aggregate and calcium carbonate from concrete composite materials, and a device for carrying out said method |
US14420998 |
2013-08-27 |
US09664446B2 |
2017-05-30 |
Gunther Achenbach |
The invention relates to a method for producing aggregate and calcium carbonate from concrete aggregate, and a device for carrying out said method. |
184 |
COMPOSITE GYPSUM BOARD AND METHODS RELATED THERETO |
US15186212 |
2016-06-17 |
US20160375656A1 |
2016-12-29 |
Alfred C. Li; Weixin D. Song; Yijun Sang; Gregg G. Diefenbacher; Annamaria Vilinska; Brian J. Christ; Fredrick T. Jones; Bradley W. Todd |
Disclosed is a composite gypsum board comprising a board core and a concentrated layer of substantial thickness (e.g., at least about 0.02 inches). The concentrated layer includes a higher weight percentage of an enhancing additive than the board core. The board core has a thickness greater than the thickness of the concentrated layer and forms the bulk of the board volume. The concentrated layer has a higher density (e.g., at least about 1.1 times greater) than the density of the board core. Also disclosed is a method of preparing a composite gypsum board. |
185 |
MULTIPHASIC BONE GRAFT SUBSTITUTE MATERIAL |
US15238130 |
2016-08-16 |
US20160354514A1 |
2016-12-08 |
Jon P. Moseley; Jamie MacDougall; Katie Harrigan |
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 non-porous β-tricalcium phosphate powder; and iv) a porous β-tricalcium phosphate powder. Bone graft substitute cements made therefrom, a bone graft substitute kit comprising the particulate composition, methods of making and using the particulate composition, and articles made from the bone graft substitute cement are also provided. |
186 |
GYPSUM PANELS, SYSTEMS, AND METHODS |
US15014821 |
2016-02-03 |
US20160222647A1 |
2016-08-04 |
Vincent B. Thomas; Rochelle Bradford; Christopher J. Sanders; Yi-Hsien Harry Teng |
Gypsum panels, sheathing systems, and methods of making and using the same are provided. A gypsum panel includes a gypsum core associated with a first fiberglass mat having a continuous barrier coating, the coating penetrating a portion of the first fiberglass mat opposite the gypsum core, wherein gypsum penetrates a remaining fibrous portion of the first fiberglass mat such that voids in the first fiberglass mat are substantially eliminated. A building sheathing system includes at least two gypsum panels and a seaming component to provide a seam at an interface between the gypsum panels. |
187 |
GYPSUM PANELS, SYSTEMS, AND METHODS |
US15014793 |
2016-02-03 |
US20160222646A1 |
2016-08-04 |
Vincent B. Thomas; Rochelle Bradford; Christopher J. Sanders; Yi-Hsien Harry Teng |
Gypsum panels, sheathing systems, and methods of making and using the same are provided. A gypsum panel includes a gypsum core associated with a first fiberglass mat having a continuous barrier coating, the coating penetrating a portion of the first fiberglass mat opposite the gypsum core, wherein gypsum penetrates a remaining fibrous portion of the first fiberglass mat such that voids in the first fiberglass mat are substantially eliminated. A building sheathing system includes at least two gypsum panels and a seaming component to provide a seam at an interface between the gypsum panels. |
188 |
POLYMERIC DISPERSANT |
US14897778 |
2014-07-10 |
US20160122243A1 |
2016-05-05 |
Torben Gaedt; Martin Winklbauer; Harald Grassl; Michael Schinabeck; Nina Susanne Hillesheim; Antonia Grafetstetter |
The invention relates to a dispersant comprising a polymer obtainable by copolymerization of monomers including 5 to 80 mol % of a hydroxyalkyl acrylate phosphate and/or hydroxyalkylacrylamide phosphate (monomer 1), 0 to 20 mol % of a di(hydroxyalkyl acrylate) phosphate and/or di(hydroxyalkylacrylamide) phosphate (monomer 2) and 1 to 80 mol % of a polyalkylene glycol-containing macromonomer comprising an alkene group (monomer 3). Further disclosed is a process for preparing the polymers of the invention and the use thereof as dispersants in calcium sulphate-containing compositions. A further aspect of the invention is a process for producing shaped gypsum bodies, and also shaped gypsum bodies, more particularly gypsum plasterboards and self-levelling screeds, comprising the dispersant of the invention. |
189 |
Multi-layer acoustical plaster system |
US12275755 |
2008-11-21 |
US09266778B2 |
2016-02-23 |
Lee K. Yeung |
An acoustical plaster system features a base layer mixture and a finish layer mixture. The base layer mixture includes a first binder, a first thickener and a plurality of first particles, with the first particles being porous, lightweight, non-close packing particles having a first mean diameter. The finish layer mixture includes a powder latex binder, a second thickener and a plurality of second particles, with the second particles being porous, lightweight particles having a second diameter. The first mean diameter is larger than said second mean diameter. |
190 |
Dental gypsum-bonded investment material powder |
US14037698 |
2013-09-26 |
US09198837B2 |
2015-12-01 |
Daizaburo Mori; Emiko Fukushima; Haruhiko Horiuchi |
The invention provides a dental gypsum-bonded investment material powder which can inhibit air bubbles from being generated in a mixed material, only by being mixed with water without using any special device or tool, and is easily mixed with the water. A specific siloxane is blended at a specific amount in relation to the dental gypsum-bonded investment material powder which includes an anionic surfactant and is excellent in a mold releasing action. In other words, the dental gypsum-bonded investment material powder is structured such as to have 0.001 to 0.2 weight % anionic surfactant, and 0.00001 to 0.0005 weight % cyclic siloxane having 3 to 10 SiO(CH3)2 units. |
191 |
CALCIUM SULPHATE-BASED PRODUCTS |
US14654300 |
2013-12-19 |
US20150329423A1 |
2015-11-19 |
Robin FISHER |
This invention relates to improved high temperature resistant calcium sulphate-based products e.g. gypsum wallboard products and, in particular, to products having reduced shrinkage at high temperatures. The invention provides calcium sulphate-based product comprising gypsum and a shrinkage resistance additive. The shrinkage resistance additive is melamine polyphosphate or melamine pyrophosphate. |
192 |
GYPSUM COMPOSITION, GYPSUM SLURRY, GYPSUM HARDENED BODY, GYPSUM-BASED BUILDING MATERIAL, GYPSUM BOARD, AND MANUFACTURING METHOD FOR A GYPSUM-BASED BUILDING MATERIAL |
US14425068 |
2013-05-21 |
US20150225293A1 |
2015-08-13 |
Yuji Ataka; Yosuke Sato |
A gypsum composition includes a calcined gypsum and a starch urea phosphate. |
193 |
MULTIPHASIC BONE GRAFT SUBSTITUTE MATERIAL |
US14568773 |
2014-12-12 |
US20150196689A1 |
2015-07-16 |
Jon Moseley; Jamie Macdougall; Katie Harrigan |
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 non-porous β-tricalcium phosphate powder; and iv) a porous β-tricalcium phosphate powder. Bone graft substitute cements made therefrom, a bone graft substitute kit comprising the particulate composition, methods of making and using the particulate composition, and articles made from the bone graft substitute cement are also provided. |
194 |
LIGHT WEIGHT GYPSUM BOARD |
US14198463 |
2014-03-05 |
US20140186643A1 |
2014-07-03 |
Qiang YU; Weixin D. SONG; Michael R. LYNN |
The invention generally provides gypsum-containing slurries including stucco, naphthalenesulfonate dispersant, and pregelatinized starch. The naphthalenesulfonate dispersant is present in an amount of about 0.1%-3.0% by weight based on the weight of dry stucco. The pregelatinized starch is present in an amount of at least about 0.5% by weight up to about 10% by weight of pregelatinized starch by weight based on the weight of dry stucco in the formulation. Other slurry additives can include trimetaphosphate salts, accelerators, binders, paper fiber, glass fiber, and other known ingredients. The invention also comprises the gypsum-containing products made with such slurries, for example, gypsum wallboard, and a method of making gypsum wallboard. |
195 |
PREGELATINIZED STARCH WITH MID-RANGE VISCOSITY, AND PRODUCT, SLURRY AND METHODS RELATED THERETO |
US13835002 |
2013-03-15 |
US20140113124A1 |
2014-04-24 |
Yijun SANG; Weixin D. SONG |
Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise). |
196 |
CEMENT CLINKER, METHOD OF MANUFACTURING THE SAME AND CEMENT COMPOSITION |
US14003674 |
2012-04-17 |
US20130340652A1 |
2013-12-26 |
Hiroshi Nagata; Akinori Nakamura; Hiroyoshi Kato; Takashi Chabayashi; Daihachi Kitayama |
A cement clinker which can be sintered at 1,300 to 1,400° C. which is lower than the conventional sintering temperature and develops excellent strength characteristics such as mortar compression strength.The cement clinker has a total content of C3A and C4AF calculated by Bogue's formulas of 22 mass % or more, a C35 content calculated by Bogue's formula of 60 mass % or more and an iron modulus (I.M.) of 1.3 or less, preferably 1.0 to 1.3. Since the total content of C3A and C4AF is 22 mass % or more, the cement clinker can be sintered at a low temperature and the reduction of strength when a cement composition is cured can be prevented by reducing the iron modulus of the cement clinker. |
197 |
Light weight gypsum board |
US13493941 |
2012-06-11 |
US08470461B2 |
2013-06-25 |
Qiang Yu; Weixin D. Song; Michael R. Lynn |
The invention generally provides gypsum-containing slurries including stucco, naphthalenesulfonate dispersant, and pregelatinized starch. The naphthalenesulfonate dispersant is present in an amount of about 0.1%-3.0% by weight based on the weight of dry stucco. The pregelatinized starch is present in an amount of at least about 0.5% by weight up to about 10% by weight of pregelatinized starch by weight based on the weight of dry stucco in the formulation. Other slurry additives can include trimetaphosphate salts, accelerators, binders, paper fiber, glass fiber, and other known ingredients. The invention also comprises the gypsum-containing products made with such slurries, for example, gypsum wallboard, and a method of making gypsum wallboard. |
198 |
CEMENT AND CONCRETE WITH REINFORCED MATERIAL |
US13560246 |
2012-07-27 |
US20130139727A1 |
2013-06-06 |
Brent R. CONSTANTZ; Paulo J.M. Monteiro; Kyle Self; Irvin Chen |
Provided are compositions, methods and systems including cementitious compositions and reinforcing materials wherein the cementitious composition comprises a metastable component. |
199 |
Slurries and methods of making light weight gypsum board |
US12709159 |
2010-02-19 |
US08257489B2 |
2012-09-04 |
Qiang Yu; Weixin D. Song; Michael R. Lynn |
The invention generally provides gypsum-containing slurries including stucco, naphthalenesulfonate dispersant, and pregelatinized starch. The naphthalenesulfonate dispersant is present in an amount of about 0.1%-3.0% by weight based on the weight of dry stucco. The pregelatinized starch is present in an amount of at least about 0.5% by weight up to about 10% by weight of pregelatinized starch by weight based on the weight of dry stucco in the formulation. Other slurry additives can include trimetaphosphate salts, accelerators, binders, paper fiber, glass fiber, and other known ingredients. |
200 |
Gypsum Based Formulations |
US12598230 |
2009-10-19 |
US20120058356A1 |
2012-03-08 |
Agnes Smith; Thierry Chotard; Cyrielle S. Dupas; Ian Wilkes |
The formulation for making plasterboard with paper cover sheets comprises finely divided gypsum, a minor amount by weight of starch and, as crosslinking agent for the starch, a tri-functional reactive s-triazine having substituents at positions 2, 4 and 6 of the triazine ring which are reactive with the starch. A preferred crosslinking agent is 2,4,6-trichloro-s-triazine, which is preferably partially reacted with the starch before further reaction with the paper cover sheets for the plaster board. |