Patents Assigned to Celotex Corporation
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Patent number: 5362764Abstract: A closed cell, rigid polyisocyanurate foam which comprises the reaction product of a polyisocyanate and a polyol in the presence of (a) a hydrogen-containing blowing agent or a mixture of a hydrogen-containing blowing agent and at least one co-blowing agent, and (b) a siloxane oxyalkylene copolymer (i) having a molecular weight below about 7500 and an oxyalkylene portion containing greater than 60 weight percent of oxyethylene units and (ii) being prepared by the reaction of an organohydrogensiloxane with a polyoxyalkylene in an essentially solventless system or in the presence of a high boiling point polar polyol.Type: GrantFiled: February 28, 1994Date of Patent: November 8, 1994Assignee: The Celotex CorporationInventors: Michael E. Londrigan, Kenneth G. Trout
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Patent number: 5352510Abstract: A method for the manufacture of paper faced foam which comprises (a) applying a foam-forming mixture to at least one advancing cellulosic sheet or composite thereof with an air- and/or moisture-impermeable material, the cellulosic sheet (i) being impregnated with cured polyisocyanate, (ii) being sufficiently flexible for unwinding from a roll for conveyance along a production line and (iii) having a moisture content which does not exceed about 10 percent and is evenly distributed throughout the cellulosic sheet, and (b) foaming and curing the faced foam-forming mixture.Type: GrantFiled: September 27, 1993Date of Patent: October 4, 1994Assignee: The Celotex CorporationInventors: Wayne E. Laughlin, Kenneth P. Klapper
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Patent number: 5312848Abstract: Thermoformable polyisocyanurate foams are prepared by reacting together under foam-forming conditions an organic polyisocyanate and an isocyanate-reactive compound, especially an aromatic polyester polyol, the equivalent ratio of isocyanate groups to isocyanate reactive groups being at least about 1.2:1. The foams and faced composites thereof can be thermoformed for a wide range of uses, such as in the interior of motor vehicles, aircraft, ships and other transport means, and of both residential and commercial buildings.Type: GrantFiled: August 27, 1992Date of Patent: May 17, 1994Assignee: The Celotex CorporationInventors: Kenneth P. Klapper, Wayne E. Laughlin, John P. Oliver
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Patent number: 5308883Abstract: Rigid, closed cell polyisocyanurate foams are prepared by reacting together a polyisocyanate and a polyester polyol or a mixture of a polyester polyol and at least one other isocyanate-reactive compound in the presence of (a) a hydrogen-containing blowing agent or a mixture of a hydrogen-containing blowing agent and at least one co-blowing agent and (b) a catalyst mixture comprising (i) a carboxylate salt of an alkali metal or an alkaline earth metal or mixtures thereof, (ii) a tertiary amine, and (iii) a quaternary ammonium carboxylate salt, wherein the equivalent ratio of carboxylate metal salt: tertiary amine is a value less than about 3:1, and the quaternary ammonium carboxylate salt is present in an amount which enhances the char structure of polyisocyanurate foams made with the catalyst mixture and subjected to flammability char tests.Type: GrantFiled: May 18, 1993Date of Patent: May 3, 1994Assignee: The Celotex CorporationInventors: Michael E. Londrigan, Kenneth G. Trout
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Patent number: 5308881Abstract: A closed cell, rigid polyisocyanurate foam which comprises the reaction product of a polyisocyanate and a polyol in the presence of (a) a hydrogen-containing blowing agent or a mixture of a hydrogen-containing blowing agent and at least one co-blowing agent, and (b) a siloxane oxyalkylene copolymer (i) having a molecular weight below about 7500 and an oxyalkylene portion containing greater than 60 weight percent of oxyethylene units and (ii) being prepared by the reaction of an organohydrogensiloxane with a polyoxyalkylene in an essentially solventless system or in the presence of a high boiling point polar polyol.Type: GrantFiled: October 25, 1993Date of Patent: May 3, 1994Assignee: The Celotex CorporationInventors: Michael E. Londrigan, Kenneth G. Trout
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Patent number: 5192607Abstract: A closed cell, rigid, polymer foam comprising the reaction product of a polyisocyanate and an isocyanatereactive compound in the presence of (a) a foaming agent, (b) at least about 2 percent by weight of carbon black, based on the weight of the polymer in the foam, and (c) a capped polyoxyalkylene compound which helps bring about a uniform dispersion of the carbon black throughout the foam so that the aged k-factor of the foam is below the aged k-factor of the corresponding unfilled foam.Type: GrantFiled: July 31, 1992Date of Patent: March 9, 1993Assignees: The Celotex Corporation, Apache Building Products CompanyInventor: Thomas G. Soukup
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Patent number: 5164422Abstract: An isocyanate-terminated quasi-prepolymer is prepared by reacting an organic polyisocyanate and a polyester polyol which comprises the reaction product of a polycarboxylic acid component and ethylene glycol or a mixture of ethylene glycol and at least one other glycol. The use of the quasi-prepolymer in the preparation of rigid cellular polymers, especially polyisocyanurate foams, enhances the thermal insulating properties of the foams, and helps to reduce their cost and blowing agent usage.Type: GrantFiled: November 25, 1991Date of Patent: November 17, 1992Assignee: The Celotex CorporationInventors: Michael E. Londrigan, Scott C. Snider, Kenneth G. Trout
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Patent number: 5149722Abstract: A closed cell, rigid, polymer foam comprising the reaction product of a polyisocyanate and an isocyanate-reactive compound in the presence of (a) a foaming agent, (b) at least about 2 percent by weight of carbon black, based on the weight of the polymer in the foam, and (c) a capped polyoxyalkylene compound which helps bring about a uniform dispersion of the carbon black throughout the foam so that the aged k-factor of the foam is below the aged k-factor of the corresponding unfilled foam.Type: GrantFiled: August 28, 1991Date of Patent: September 22, 1992Assignees: The Celotex Corporation, Apache Building Products CompanyInventor: Thomas G. Soukup
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Patent number: 5137930Abstract: A closed cell, rigid, polymer foam comprising the reaction product of a polyisocyanate and an isocyanate-reactive compound in the presence of (a) a foaming agent, (b) at least about 2 percent by weight of carbon black, based on the weight of the polymer in the foam, and (c) a capped polyoxyalkylene compound which helps bring about a uniform dispersion of the carbon black throughout the foam so that the aged k-factor of the foam is below the aged k-factor of the corresponding unfilled foam.Type: GrantFiled: January 21, 1992Date of Patent: August 11, 1992Assignees: The Celotex Corporation, Apache Building Products CompanyInventor: Thomas G. Soukup
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Patent number: 5124366Abstract: A process for the manufacture of a rigid, closed-cell polyisocyanurate foam from a foam forming mixture comprising an organic polyisocyanate, a polyol, a blowing agent, and a catalyst, utilizing a polyester polyol as the sole polyol, and chlorodifluoromethane or a mixture of chlorodifluoromethane and at least one co-blowing agent as the blowing agent.Type: GrantFiled: November 5, 1990Date of Patent: June 23, 1992Assignee: The Celotex CorporationInventors: David G. Gluck, John P. Oliver
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Patent number: 5107629Abstract: A method for texturing the surface of an acoustical fiberboard by utilizing a wheel blast machine. The fiberboard is conveyed through a housing wherein at least one first centrifugal blasting wheel throws abrasive particles at a portion of the fiberboard surface to abrade it. A blower provided in the housing removes spent abrasive particles thrown by the first wheel(s), and then at least one second centrifugal blasting wheel in the housing throws abrasive particles at the remaining untreated surface to complete the abrasion, whereby removal of the spent particles by the blower prevents masking of the surface and allows the formation of a pleasing and uniform pattern over the entire fiberboard surface.Type: GrantFiled: April 11, 1991Date of Patent: April 28, 1992Assignee: The Celotex CorporationInventors: Alan L. Boyd, Fred L. Migliorini
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Patent number: 5071511Abstract: A rigid, self-supporting, acoustical mineral fiberboard comprising a mixture of about 50 to 70 weight percent of mineral fibers, 15 to 35 weight percent of perlite, 1 to 10 weight percent of cellulosic fibers, and 4 to 15 weight percent of a binder with the proviso that the board forming solids do not include any clay filler. A pattern is formed on the fiberboard after the fiberboard has been dried.Type: GrantFiled: February 23, 1990Date of Patent: December 10, 1991Assignee: The Celotex CorporationInventor: William D. Pittman
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Patent number: 5052162Abstract: This invention provides a process which automatically and in a continuous and uninterrupted manner makes a roofing shingle by applying granules to the top surface of an asphalt impregnated glass mat, laminating a narrow strip of bituminous coated glass mat to the bottom side of a coated glass mat, said narrow strip being cut from said impregnated glass mat and being inverted before said laminating step and cutting the laminated product to produce a laminate having cut-out areas between the remaining tabs. The final shingle is made from a single glass mat which is processed into a two level shingle, each level being made of a portion of the original glass mat with each level having exposed granules.Type: GrantFiled: May 10, 1990Date of Patent: October 1, 1991Assignee: The Celotex CorporationInventors: Arthur B. Bush, Dale P. Major
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Patent number: 5041333Abstract: A continuous process for the production of gypsum board of variable yet predictable density, wherein a fibrous form of stucco produced from gypsum crystals or fibers is combined with standard calcined gypsum and formed into the board. The density of the resultant board varies inversely with the content of fibrous stucco. The process yields lightweight board suitable as standard wallboards and inorganic insulating boards.Type: GrantFiled: September 19, 1990Date of Patent: August 20, 1991Assignee: The Celotex CorporationInventor: Alan P. Conroy
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Patent number: 4965031Abstract: A continuous process for the production of gypsum board of variable yet predictable density, wherein a fibrous from of stucco produced from gypsum crystals or fibers is combined with standard calcined gypsum and formed into the board. The density of the resultant board varies inversely with the content of fibrous stucco. The process yields lightweight boards suitable as standard wallboards and inorganic insulating boards.Type: GrantFiled: February 24, 1989Date of Patent: October 23, 1990Assignee: The Celotex CorporationInventor: Alan P. Conroy
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Patent number: 4911788Abstract: A method of producing an acoustical mineral fiberboard comprising(a) forming an aqueous slurry of mineral fiber-containing solids suitable for forming an acoustical board, the solids content of the slurry being sufficiently high to bring about predominant formation of nodules of mineral fiber throughout the slurry upon mixing of the slurry;(b) mixing the slurry to form the nodules of mineral fibers;(c) dewatering the slurry to form a wet felt;(d) drying the wet felt; and(e) texturing one surface of the dried felt without mechanically punching holes in the surface.Type: GrantFiled: June 23, 1988Date of Patent: March 27, 1990Assignee: The Celotex CorporationInventors: William D. Pittman, Alan L. Boyd, Fred L. Migliorini
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Patent number: 4869942Abstract: This invention provides a process and apparatus which automatically and in a continuous and uninterrupted manner laminates a narrow strip of bituminous coated glass mat to the bottom side of a coated glass mat, cuts the laminated product to produce a laminate having cut-out areas between remaining tabs and then adheres thin strips of coated glass mat across the tabs to underlie the tabs and the cut-out areas. The final shingle is made from a single glass mat which is processed into a three level shingle, each level being made of a portion of the original glass mat.Type: GrantFiled: December 21, 1987Date of Patent: September 26, 1989Assignee: The Celotex CorporationInventors: Robert E. Jennus, Dale P. Major
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Patent number: 4859723Abstract: A process of forming a durable waterproof coating on a substrate comprising (a) applying to the surface of the substrate an aqueous dispersion comprising at least one film-forming polymer, pigment material including clay in an amount sufficient to improve the adhesion of the coating to the substrate, and water, the pigment volume concentration of the dispersion being greater than 15, and (b) allowing the dispersion to dry on the surface.Type: GrantFiled: May 5, 1988Date of Patent: August 22, 1989Assignee: The Celotex CorporationInventors: Stanley C. Kyminas, John C. Phillips, Bernard J. Einhaus
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Patent number: 4842786Abstract: A method of making an embossed gypsum panel including an embossing device mounted on a moveable support and positioning the device so that it is located at the point of "set" of the gypsum slurry from which the board is made.Type: GrantFiled: October 3, 1988Date of Patent: June 27, 1989Assignee: The Celotex CorporationInventor: William E. Betzner
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Patent number: 4795763Abstract: A closed cell, rigid, polymer foam containing as filler at least about 2 percent by weight of carbon black, based on the weight of the polymer in the foam, the carbon black being uniformly dispersed throughout the foam so that there is present in the cell walls of the foam an amount of carbon black which reduces the aged k-factor of the foam to below the aged k-factor of the corresponding unfilled foam.Type: GrantFiled: April 18, 1988Date of Patent: January 3, 1989Assignee: The Celotex CorporationInventors: David G. Gluck, Thomas G. Soukup, William J. Moore