Fire Proofing Agent Patents (Class 162/159)
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Publication number: 20090133847Abstract: Wood products, specifically wood commonly used in construction including dimension lumber, pressure treated pine, composite wood materials such as plywood, particle board, and wafer board, and samples of paper and fabric were variously treated with concentrations of sodium silicate (Na2O.SiO2) also known as water glass. Cellulosic materials including dimension lumber, plywood, particle board, wafer board, paper, and fabric were treated with sodium silicate (Na2O.SiO2) in concentrations ranging from 400-0.04 g Na2O.SiO2/kg water. To overcome the disadvantages of sodium silicate, sodium silicate treated samples were further treated to convert the water soluble sodium silicate to a water insoluble form, thereby overcoming the disadvantages of water solubility and rendering the material effective for internal and external uses.Type: ApplicationFiled: November 16, 2007Publication date: May 28, 2009Inventors: K. M. Slimak, Robert A. Slimak
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Patent number: 7510628Abstract: A method of treatment of resin impregnated manufactured paper to render the paper fire retardant, said method comprising the addition of a fire retardant compound containing borax and diammonium phosphate introduced into the paper. It is an objective of the invention that the fire retardant system ameliorates any degradation of desirable physical characteristics of the fibrous materials. In particular, the characteristics of wicking and liquid retention should not be unduly degraded when the base material is a “wickable” paper. It is a further objective that the fire retardant systems of embodiments of the present invention not be significantly degraded when the resin treated fibrous material is continuously immersed in running water.Type: GrantFiled: July 16, 2004Date of Patent: March 31, 2009Assignee: FF Seeley Nominees Pty Ltd.Inventor: Ann Denholm
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Patent number: 7354503Abstract: In one embodiment, a fire retardant composite panel material is fabricated. A water-based slurry comprising partially soluble boric acid and borax pentahydrate solids is created. An adhesive used in the composite panel fabrication process is added to fibers. The water-based slurry is separately added to the adhesive and, after mixing, to the fibers. The composite panel produced thereby is also described.Type: GrantFiled: June 20, 2003Date of Patent: April 8, 2008Assignee: Sierra Pine Ltd.Inventor: Graham Hume
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Patent number: 7153390Abstract: A process for manufacturing a cellulosic paper product is provided. The process comprises forming an aqueous suspension of papermaking fibers; introducing sodium bicarbonate into the aqueous suspension; depositing the aqueous suspension onto a sheet-forming fabric to form a wet web; and dewatering and drying the wet web. The process of the present invention provides cellulosic paper products exhibiting a reduced malodor upon re-wetting.Type: GrantFiled: December 31, 2001Date of Patent: December 26, 2006Assignee: Kimberly-Clark Wordwide, Inc.Inventors: Tameka Spence, Ralph Anderson
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Patent number: 7118617Abstract: A fire-proof treatment solution capable of resolving problems, such as low solubility leading to low concentration and hence low combustion inhibiting effect and water solubility leading to a disadvantage of eluviation, of boron compounds used as a constituent of a flame-retarding treatment solution. In particular, a fire-proof treatment solution produced by adding phosphoric acid and a silane coupling agent to a weak acid or weak alkali aqueous metal salt solution containing a boron compound to thereby obtain a mixed aqueous solution and adding a plant extract composed mainly of a polyphenol compound to the mixed aqueous solution. This fire-proof treatment solution can be widely applied to members composed mainly of cellulose, such as wood, paper and natural fibers. This fire-proof treatment solution can increase the fixation of chemicals to thereby attain a high combustion inhibiting effect and can minimize the occurrence of eluviation.Type: GrantFiled: May 30, 2003Date of Patent: October 10, 2006Assignee: Asano Mokuzai Industry Co., Ltd.Inventors: Nariaki Asano, Hiroya Asano, Takahito Asano
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Publication number: 20040188046Abstract: A manufacturing process for a fire component by having a mixture containing expansion graphite powder, chemical fiber and paper fiber at a specific ratio to be bound by a process normally used for the non-woven fabric, and finally hot pressed into sheet, or the mixture is treated as a pulp to be dried for serving as a fire component; accordingly, the process of the present invention gives accurate control of the mixing ratio of the expansion graphite powder and allows to increase the containment of the expansion graphite powder in the fire component up to eighty-five percent (85%), thus to significant upgrade the performance of the fire component.Type: ApplicationFiled: March 26, 2003Publication date: September 30, 2004Applicant: INTERNATIONAL CARBIDE TECHNOLOGY CO., LTD.Inventor: Tsao Chang
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Publication number: 20040094279Abstract: The invention provides a process for the production of a coated and pressed cellulosic fibrous flat substrate of loose, optionally bonded fibers, by application of (M) an aqueous coating composition, containing a binder (B), a white pigment (W) and a dispersant (D), wherein at least a part of the white pigment (W) is (A) a particulate ammonium polyphosphate of crystalline form II of average particle size<40 &mgr;m and with a water solubility<10 g/l at 25° C., to the face of the substrate and subjecting to pressure, in particular for the production of coated and pressed substrates of outstanding surface properties, particularly suitable for graphic processing, and of outstanding non-flammability properties, suitable coating compositions, their production, the coated and pressed substrates and their use as substrates for graphic processes, especially printing.Type: ApplicationFiled: May 23, 2003Publication date: May 20, 2004Inventor: Scott Myatt
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Patent number: 6716310Abstract: A process for manufacturing a cellulosic paper product is provided. The process comprises forming an aqueous suspension of papermaking fibers; introducing a borate compound, preferably boric acid, into the aqueous suspension; depositing the aqueous suspension onto a sheet-forming fabric to form a wet web; and dewatering and drying the wet web. The process of the present invention provides cellulosic paper products exhibiting a reduced malodor upon re-wetting.Type: GrantFiled: December 31, 2001Date of Patent: April 6, 2004Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Tong Sun, James J. Tanner, Tameka Spence
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Patent number: 6641749Abstract: A method for manufacturing a tire retardant cellulose insulation with reduced density and reduced settling. The method consists of adding a material, the fibers of which have a positive electrostatic charge, onto a shredded newspaper base either before or after the addition of a pre-coat, consisting of a mixture of limestone and an antistat. A fire retardant agent is then added and the materials are ground in a finish mill. The newspaper fibers become positioned at an angle to the paper pieces, increasing the distance between the paper pieces, thereby lowering the density of the cellulose. Fibers such as ground cardboard, wood mulch, sawdust, and fiberglass fibers are examples of materials with electrostatically positively charged fibers.Type: GrantFiled: April 29, 2002Date of Patent: November 4, 2003Inventor: Leonard D. Rood
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Patent number: 6641750Abstract: An improved fire retardant cellulose insulation with reduced density and reduced settling. A method consists of adding a material, the fibers of which have a positive electrostatic charge, is added onto a shredded newspaper base either before or after the addition of a pre-coat, consisting of a mixture of an inorganic, non-hygroscopic powder and an antistat. A fire retardant agent is then added and the materials are ground in a finish mill. The newspaper fibers become positioned at an angle to the paper pieces, increasing the distance between the paper pieces, thereby lowering the density of the cellulose. Increasing the amount of antistat will decrease settling at the expense of increasing density. Adding water to the insulation system will neutralize static electricity and minimize settling. Fibers such as ground cardboard, wood mulch, sawdust, and fiberglass fibers are examples of materials with electrostatically positively charged fibers.Type: GrantFiled: January 10, 2003Date of Patent: November 4, 2003Inventor: Leonard D. Rood
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Patent number: 6521682Abstract: A flame-resistant additive for textile materials and microfiber non-woven fabrics of the artificial-leather type that imparts a high level of fireproofing properties to the textile material treated without negatively affecting the visual and mechanical characteristics, softness to the touch. The flame-resistant additive includes a fireproofing component having a finely divided mixture of melamine and melamine cyanurate and a clay or other adsorbent material such as diatomaceous earth, zeolite, inorganic oxides such as alumina, silica, magnesium oxide or mixtures of inorganic oxides and a binder which includes an aqueous dispersion of an acrylic or maleic polymer or copolymer and a multifunctional cross-linker of the acrylic or maleic polymer or copolymer.Type: GrantFiled: July 13, 2000Date of Patent: February 18, 2003Assignee: Alcantara S.p.A.Inventors: Rocco Costantino, Ennio Giuliacci, Elisabetta Baroni, Mario Bartolini, Paolo Bartolini, Massimiliano Castagnoli, Mario Cocci
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Patent number: 6455125Abstract: A method for manufacturing a paper core material is described. The paper core material has uses such as in the building industry and has the advantage that no toxic home syndrome is caused in a newly built house or office. The paper core material has a continuous geometric pattern such as rectangular or hexagonal cells and is made by the method of providing a plurality of base paper strips, bending and gluing the base paper strips to form the paper core material having a continuous geometric pattern, treating the paper core material with a charcoal solvent comprising activated carbon dust, wood vinegar and a flame-resisting agent, and drying the paper core material. An alternate method is provided which involves treating the base paper strips with the charcoal solvent, drying the base paper strips, and then bending and gluing the base paper strips to form the paper core material having a continuous geometric pattern.Type: GrantFiled: February 22, 2000Date of Patent: September 24, 2002Assignee: Dice Core CorporationInventor: Michiko Morishita
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Publication number: 20020060012Abstract: The disclosure is directed to a method of using melamine resin fibers, to an insulating material comprisingType: ApplicationFiled: December 4, 2001Publication date: May 23, 2002Inventors: Heinz Berbner, Karl Ott
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Patent number: 6372360Abstract: Fire retardant cellulosic material comprises from 0.4 to 2.0% by weight of tin and from 0.4 to 8.0% by weight of boron based on the weight of the cellulosic material. The fire retardant material is prepared in a two-stage or a one-stage process. The two-stage process comprises impregnation of the material with an alkaline solution of an alkali metal stannate or stannite, followed by impregnation with an aqueous solution of boric acid and drying. The one-stage process comprises impregnation of the material with a stable aqueous colloidal suspension of hydrous tin oxide stabilized with an alkali metal salt of boric acid having a pH in the range of from 4 to 8, followed by drying.Type: GrantFiled: April 5, 1999Date of Patent: April 16, 2002Assignee: ITRI Ltd.Inventors: Stephen John Blunden, Paul Andrew Cusack, Anthony James Wallace
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Patent number: 6207085Abstract: A composition which, when subjected to heat, expands to form heat-insulating barriers comprises an expandable graphite, a fire retardant, and an inorganic intumescent filler such as clay dispersed in a resinous emulsion. Particularly desirable results are obtained with a fire retardant which is a C2-C8 alkyl diamine phosphate.Type: GrantFiled: March 31, 1999Date of Patent: March 27, 2001Assignee: The Rectorseal CorporationInventor: Eva Ackerman
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Patent number: 5830319Abstract: A flexible fire barrier felt is provided that includes an organic polymeric binder; a phosphorus-containing compound; organic fibers with pendant hydroxyl groups; and a heat absorbing compound.Type: GrantFiled: October 13, 1995Date of Patent: November 3, 1998Assignee: Minnesota Mining and ManufacturingInventor: Heather V. Landin
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Patent number: 5789326Abstract: A binder is applied to fibers to bind particles to the fibers. The fibers have hydrogen bonding functional groups. The particles have functional groups capable of forming a hydrogen bond or a coordinate covalent bond. The binder comprises binder molecules, the binder molecules having at least one functional group that is capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that is capable of forming a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder is in turn adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.Type: GrantFiled: November 19, 1996Date of Patent: August 4, 1998Assignee: Weyerhaeuser CompanyInventors: Michael R. Hansen, Richard H. Young, Sr.
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Patent number: 5723020Abstract: The invention relates to an improvement in the art of making saturating kraft paper. In particular, the invention relates to a method for enhancing the fire-retardancy of saturating kraft paper containing alumina trihydrate and phenolic resin by including sodium borate into the paper. The improved saturating kraft is particularly useful in the production of fire-retardant high-pressure laminated materials.Type: GrantFiled: November 1, 1996Date of Patent: March 3, 1998Assignee: Westvaco CorporationInventors: Philip L. Robinson, Ramazan Benrashid
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Patent number: 5589256Abstract: A method of producing easily densified high bulk fibers that have adhered particulates. The high bulk fibers have hydrogen bonding or coordinate covalent bonding functionalities, and a binder is applied to the fibers to bind the particles to the fibers. The binder has a functional group that forms a hydrogen bond or a coordinate covalent bond with the particles, and a functional group that forms a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder is in turn adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.Type: GrantFiled: August 17, 1992Date of Patent: December 31, 1996Assignee: Weyerhaeuser CompanyInventors: Michael R. Hansen, Richard H. Young, Sr.
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Patent number: 5534301Abstract: A method for producing fire-resistant cellulose insulation materials using liquid fire retardants. Cellulose materials (e.g. paper) are initially shredded into multiple pieces which are sprayed with a mist containing liquid fire retardants. The sprayed paper is then subjected to a delay period before further processing to ensure diffusion of the fire retardants into the paper. The paper is then passed into a drying chamber in combination with a stream of heated air. The air is preferably introduced into the chamber in a non-parallel, angular flow path relative to the longitudinal axis of the chamber. To completely dry the paper, movement of the paper and heated air through the chamber is periodically interrupted so that the paper is completely dried by the air. Interruption may be achieved by providing moving baffle members within the chamber. As a result, a dried cellulose insulation product is manufactured.Type: GrantFiled: May 10, 1995Date of Patent: July 9, 1996Assignee: Echochem International, Inc.Inventor: Thomas C. Shutt
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Patent number: 5480587Abstract: A method of modifying an inorganic material which evolves gases and/or vapors at a temperature which is detrimental to the processing temperature of polymer or paper systems so that the modified material can be used as a fire retardant additive with that polymer or paper system. The method comprises the steps of: (1) providing a first material; (2) treating the first material to remove the portion which evolves gas which is detrimental to the processing of the polymer or paper system; and (3) combining a second material with the first material to create a modified material which does not evolve gas at a temperature which is detrimental to the processing of the paper or polymer system.Type: GrantFiled: December 21, 1988Date of Patent: January 2, 1996Assignee: Aluminum Company of AmericaInventors: Lawrence L. Musselman, Howard L. Greene
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Patent number: 5272852Abstract: An insulating pulp for insulating buildings and other type structures and wherein the pulp is formed of organic fibers having a fiber length of from about 1.0 mm to 3 mm. Such pulp is obtained by a chemi-thermomechanical pulping process and the pulp may be supplied in fluff form or compressed sheet form which is later defibrillized. A fire retardant additive and a corrosive buffing agent is added to the pulp. A major characteristic of such insulating pulp is that it has a density in the range of from about 0.6 to 4.0 lbs/ft.sup.3 and has an excellent thermal insulation value of about R3 to R4 per inch. The chemi-thermomechanical wood pulp is produced from debarked trees which are primarily black spruce which have these long and strong fibers. The pulp is applied by injecting it through a compressed air conduit and at the same time an adhesive is injected in the pulp to form a binding agent.Type: GrantFiled: July 14, 1992Date of Patent: December 28, 1993Assignee: Cascades Inc.Inventors: Michel E. Fortin, Andre Boisvert, Bernard Lemaire
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Patent number: 5155964Abstract: An insulating pulp for insulating buildings and other type structures and wherein the pulp is formed of organic fibers having a fiber length of from about 1.0 mm to 3 mm. Such pulp is obtained by a chemi-thermomechanical pulping process and the pulp may be supplied in fluff form or compressed sheet form which is later defibrillized. A fire retardant additive and a corrosive buffing agent is added to the pulp. A major characteristic of such insulating pulp is that it has a density in the range of from about 0.7 to 2.0 lbs/ft.sup.3 and has an excellent thermal insulation value of about R3 to R4 per inch. The chemi-thermomechanical wood pulp is produced from debarked trees which are primarily black spruce which have these long and strong fibers. The pulp is applied by injecting it through a compressed air conduit and at the same time an adhesive is injected in the pulp to form a binding agent.Type: GrantFiled: March 1, 1991Date of Patent: October 20, 1992Assignee: Cascades Inc.Inventors: Michel E. Fortin, Andre Boisvert, Bernard Lemaire
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Patent number: 5084307Abstract: This specification discloses a flame retardant vegetable fiber material and the process for the production of the same. The adopted means is to immerse the vegetable fiber into a firstly prepared inorganic solution and also into a secondary prepared inorganic solution in turn, while both solutions come into the inherent gaps of the said fiber and become an insoluable and incombustible inorganic compound therewith. The mutual contact and reaction caused by the first and second solutions generate a setting dip and fixation thereupon.Type: GrantFiled: March 10, 1989Date of Patent: January 28, 1992Inventor: Kouichi Nishimoto
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Patent number: 4987022Abstract: Non-inflammable light-weighing tough boards to be used for structural and decorative material in housing and building, such as, decorative ceiling boards, sliding door overlays, partitions and so on, prepared by corrugating cardboard made of phosphated wood pulp and inorganic fiber and processing the so obtained corrugated board by impregnating with a toughening solution of inorganic toughening agent and then drying it.Type: GrantFiled: July 31, 1989Date of Patent: January 22, 1991Assignees: Keisuke Ueno, United Board Co., Ltd., K. S. Consult Service Co., Inc.Inventor: Keisuke Ueno
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Patent number: 4950362Abstract: Elastic, heat-insulating shapes of ceramic, refractory or fireproof fibers and, where needed, further refractory or fireproof substances, and temporary or inorganic binders, as well as a process for the preparation thereof. The heat-insulating shapes are characterized by the fact that they contain 5 to 40 weight % of fibrids comprised of organic polymers, as a result of which they have elastic properties and can be formed with ease at moderate temperatures. In preparing these shapes, a customary aqueous dispersion containing the fibers and binder is mixed with the fibrids of the organic polymer, and water is removed therefrom and the shapes are otherwise produced in a known manner.Type: GrantFiled: July 11, 1989Date of Patent: August 21, 1990Assignee: Didier-Werke AgInventors: Peter Steinau, Ludwig Wirth, Ingo Elstner, Andreas Naumann
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Patent number: 4888136Abstract: This application discloses new compositions of matter useful as flame retardants for cellulosic materials comprising ammonium bromide and, at least, one water-soluble aluminum salt of an organic hydroxy acid, such as aluminum citrate or aluminum lactate.Type: GrantFiled: May 2, 1988Date of Patent: December 19, 1989Assignee: Witco CorporationInventors: Karumpatti L. Chellapa, Mukund C. Shah
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Patent number: 4842772Abstract: Alumina trihydrate particles coated with alkali metal silicate, alkaline earth metal silicate or alumino silicate are useful as fillers in paper and plastics and provide good opacity and brightness properties as well as fire retardancy. The alumina trihydrate products are prepared by reaction of alumina trihydrate with an alkali metal silicate, an alkaline earth metal silicate, or alumino silicate, or the reaction of alkali metal silicate or alkaline earth metal silicate with aluminum sulfate to produce an alumino silicate precipitate coating in situ.Type: GrantFiled: June 1, 1987Date of Patent: June 27, 1989Assignee: J. M. Huber CorporationInventor: Withiam Michael C.
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Patent number: 4780180Abstract: A nonflammable paper having a sufficient yield at the time of paper-making and a sufficient non-combustibility and strength even in a basis weight as low as 100 g/m.sup.2 or less is provided, which paper is obtained by dispersing in water a composition comprising 40 to 95% by weight of calcium silicate in the form of needle, plate, thin film or a secondary aggregate thereof, and aluminum hydroxide powder, in a specified ratio by weight, 5 to 30% by weight of cellulose fibers and 0 to 30% by weight of other additives, the total weight of these components being 100% by weight, followed by subjecting the dispersion to paper-making.Type: GrantFiled: December 15, 1987Date of Patent: October 25, 1988Assignees: Onoda Cement Co. Ltd., Meisei Chemical Works Ltd.Inventors: Takao Take, Kentaro Nakahara, Katsuaki Kaneko
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Patent number: 4755225Abstract: Flame and combustion retardant insulative materials are manufactured by subjecting cellulosic pulp rejects to a dewatering operation to remove approximately 25% of the water; flash-drying the obtained partially dewatered rejects, causing the rejects to expand and become porous; applying a flame or combustion retardant material to impregnate and coat the expanded and porous cellulosic material, and drying. The thus impregnated and coated cellulosic materials have high insulative values while being highly resistant to flame and smoldering combustion.Type: GrantFiled: August 26, 1985Date of Patent: July 5, 1988Inventor: Norman W. Pruitt
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Patent number: 4746570Abstract: A heat-resistant, highly expansible sheet material for supporting a catalyst carrier containing unexpanded vermiculite, in which the cations contained between the layers of the vermiculite are at least partly exchanged by ammonium cations, is provided. A process for the preparation of the sheet material, which involves blending an unexpanded vermiculite which has been preliminarily immersed in an aqueous solution containing alkali metal ions, inorganic fiber, an organic binder, and an inorganic binder, whereto a slurry solution of beaten natural organic fiber is added, and forming a sheet material from the mixture, is described.Type: GrantFiled: September 28, 1987Date of Patent: May 24, 1988Assignees: Toyota Jidosha Kabushiki Kaisha, Ibiden Kabushiki KaishaInventors: Tooru Suzaki, Yoshihiro Kanome, Masaomi Hayakawa, Kunihiko Miyashita
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Patent number: 4710309Abstract: A lightweight soundproofing, insulation and fireproofing material and method is disclosed. A dry composition is provided which includes 60-80% by weight of an inorganic lightweight nonflammable fibrous material, 16.67-36.67% by weight of an organic lightweight normally-flammable fibrous material, and 3.33-10% by weight of a refracted clay material. The non-flammable fibrous material is pulled apart to provide a high temperature loose fiber material, the normally-flammable fibrous material is shredded, and the refracted clay material is embedded in the normally-flammable fibrous material after shredding to reduce the flammability thereof. Thereafter, the nonflammable fibrous material is mixed with the normally-flammable fibrous material to complete the dry composition. A liquid adhesive is provided which includes liquid sodium silicate having a ratio of silicon dioxide to sodium oxide that is greater than 3.Type: GrantFiled: December 4, 1986Date of Patent: December 1, 1987Assignee: American Sprayed-On Fibers, Inc.Inventor: Dennis C. Miller
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Patent number: 4678822Abstract: A bonded fibre insulation batt is produced by ragging, teasing and otherwise doffering fibres of wool and/or synthetic or other natural fibres such as monoacrylic, acrylic, polyamide, polyester or cotton fibres, so as to form a sliver with said fibres randomly dispersed. The sliver is passed through a lapper which causes the sliver to lap on itself to form a mat of desired thickness. The sliver is sprayed with a resin emulsion prior to lapping so that the mat produced is throughly impregnated. The resin emulsion can include a fireproofing resin, and preferably a pesticide and a smoke retardant. The impregnated mat passes to a dryer to remove a substantial part of the water content thereof with minimal heating of the fibres. Following the water removal the mat passes to an oven to cure the resin thus forming the insulating batt which can be cut to desired size.Type: GrantFiled: October 31, 1985Date of Patent: July 7, 1987Assignees: Maxwell Victor Lane, George KaddisInventor: Richard L. Lewellin
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Patent number: 4642268Abstract: A wood substrate having good flame resistance characteristics while substantially maintaining its adherence characteristics for asphalt products. One surface of the wood substrate has a coating of an inorganic soluble silicate impregnating the wood substrate and forming a firm bonding with it. A process which is disclosed comprises: (a) coating at least one surface of a wood substrate with a concentrated solution of an inorganic soluble silicate, and (b) drying said coating as to leave on said surface the inorganic silicate impregnating the wood substrate and form a firm bonding with the wood substrate.Type: GrantFiled: October 4, 1985Date of Patent: February 10, 1987Assignee: Domtar IncInventor: Andre St.-Michel
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Patent number: 4600634Abstract: This invention relates to a non-intumescent, non-char forming, endothermic, essentially inorganic, flexible, fire-protective sheet material. The flexible sheet is made of a composition comprising:(a) an inorganic fiber, such as fiberglass and alumino-silicate refractory fibers;(b) an organic polymer binder, such as an acrylic resin; and(c) an inorganic endothermic filler, such as alumina trihydrate.The weight ratio of organic to inorganic constituents is less than about 0.10, and the weight ratio of inorganic endothermic filler of part (c) to inorganic fiber of part (a) is in the range of about 0.5 to 50. This sheet is a useful fire barrier wrap for conduits and cable trays in building construction, which provides excellent fire protection, and the current capacity derating of cables is significantly less with this new fibrous sheet than it is in the case of known fire barrier sheet materials.Type: GrantFiled: February 4, 1985Date of Patent: July 15, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventor: Roger L. Langer
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Patent number: 4595414Abstract: Fire retardant compositions in pelletized and in aqueous solution form constituting mixtures containing in a ratio by weight about 30-50% monoammonium phosphate and 70-50% diammonium phosphate, and optionally a corrosion inhibitor, which in solution form are of substantially neutral pH and contain in a 10-part ratio by weight about 3-7.9 parts total monoammonium phosphate and diammonium phosphate and 7-2.1 parts of water, and optionally a surfactant;methods of using such compositions in solution form for providing composite fire retardant cellulosic products in which the solution is intimately intermixed with cellulosic fiber material to form loose fibers thereof containing such solution substantially absorbed therein, e.g. in a 100-part ratio by weight of about 6-16 parts of solution and 94-84 parts of cellulosic material and having a bulk density corresponding to a settled bulk density of about 2.0-3.1 lbs/ft.sup.Type: GrantFiled: May 11, 1981Date of Patent: June 17, 1986Inventor: Thomas C. Shutt
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Patent number: 4579592Abstract: A new and improved insulating composition comprising a mixture of cellulose, boric acid and expanded silicate glass, and having a PH factor preferred in the range of 7 to 7.2, more or less.Type: GrantFiled: July 29, 1983Date of Patent: April 1, 1986Assignee: Gene CrandallInventor: Richard E. Loomis
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Patent number: 4560619Abstract: A wood improver comprising a waste liquor produced by the digestion of pulp, such as kraft, sulfite or semichemical pulp, and optionally further containing a Steffen waste liquor from beet sugar plant and/or polyethylene glycol. Also disclosed is a method of improving the quality of wood by treating it with the improver to prevent its cracking during drying.Type: GrantFiled: September 15, 1983Date of Patent: December 24, 1985Assignee: Nippon Tensaiseito Kabushiki KaishaInventor: Yasutsugu Yamada
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Patent number: 4552803Abstract: Fire retardant compositions in the form of a powder are produced from the following components:______________________________________ Component Parts by Weight ______________________________________ Aldehyde 70-140 Ammonium phosphate 50-250 Ammonium, alkali metal or 50-250 alkaline earth metal compound or salt Urea reactant 70-190 Hydroxy reactant 20-60 Phosphoric acid 150-250 ______________________________________Also provided are retardant compositions containing the powder and methods for treating substrates, such as paper or wood, as well as cotton, wool, and synthetic textiles to impart fire retardant properties thereto.Type: GrantFiled: August 21, 1984Date of Patent: November 12, 1985Inventor: Glenn A. Pearson
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Patent number: 4515633Abstract: Polymeric materials are combined with modified heat exfoliated hydrated magnesium aluminosilicates. The aluminosilicates are treated with aqueous acidic solutions and subjected to controlled agitation to convert highly porous concertina-shaped granular hydrated magnesium aluminosilicates into groups of electrolyte insensitive platelets. Water slurries of the groups of platelets when dried form coherent, continuous sheets which when mechanically disintegrated may be reslurried in water. The modified heat exfoliated magnesium aluminosilicates are adapted for use in fire retardant, loose fill cellulose insulation, paper and pulp products, synthetic polymeric materials, coatings such as fire retardant acoustic coatings, dog foods, defoliants and the like.Type: GrantFiled: June 27, 1983Date of Patent: May 7, 1985Assignee: Morca, Inc.Inventor: Mamerto M. Cruz, Jr.
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Patent number: 4514327Abstract: This invention is a fire retardant compound and the method for preparing the same. The combined fire retardant properties of the final composition are greater than the fire retardant properties of the individual ingredients. When formulated and treated in accordance with the present invention, wood products such as paneling and flooring, fabric products such as cotton, wool and rayon and the like which are normally flammable are for all practical purposes noncombustible. Not only are the flame retardant properties of the present invention highly unusual but also the smoke inhibiting factor in each case is extremely low and way below that which would normally be anticipated.Type: GrantFiled: January 10, 1983Date of Patent: April 30, 1985Inventor: James E. Rock
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Patent number: 4468336Abstract: A low settled density loose fill heat insulation for building structures is formed by the addition to cellulose insulation of staple fibers selected from the group polypropylene, acetate, polyethylene, polyester, acrylic and vinyl. The staple fibers extend the cellulose insulation.Type: GrantFiled: July 5, 1983Date of Patent: August 28, 1984Inventor: Ivan T. Smith
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Patent number: 4419256Abstract: A composition for insulation which may be used for reducing thermal transmission, for absorbing sound waves and for providing a fire spread barrier, and which may be sprayed on surfaces in relatively thick coats. The composition includes a blended mixture of cellulose fiber, mineral wool, boric acid and expanded silicate glass. The blended fibers are mixed with an adhesive and sprayed on a surface to be insulated, and the adhesive preferably is a fire retardant, nontoxic adhesive which remains flexible after it has dried so that expansion or contraction of the insulation or the insulated surface will not result in cracks in the insulation.Type: GrantFiled: November 12, 1981Date of Patent: December 6, 1983Assignee: Delron Research and Development CorporationInventor: Richard E. Loomis
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Patent number: 4416728Abstract: Self-extinguishing paper materials essentially consisting of paper pulps obtained from virgin chemical or reclaimed cellulose fibers and from red phosphorus powder encapsulated by a modified melaminic resin. These materials find practical industrial appliances especially as paperboard and in papers of various types requiring flame-retarding self-extinguishing characteristics.Type: GrantFiled: July 16, 1982Date of Patent: November 22, 1983Assignee: Saffa S.p.A.Inventors: Giancarlo Albanesi, Gianfranco Rinaldi
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Patent number: 4376674Abstract: A method of manufacturing flame and abuse resistant fiber panels by treating the surface of water-laid fiber mats with an aqeuous slurry of sodium silicate and calicum carbonate and drying the mats is disclosed. The slurry is applied to the wet mat after wet pressing and before drying while the mat still contains considerable moisture content. The resulting products present a hard, abuse resistant, flame resistant and water resistant surface.Type: GrantFiled: March 30, 1981Date of Patent: March 15, 1983Assignee: United States Gypsum CompanyInventor: Mohammad H. Ali
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Patent number: 4371579Abstract: A fire-resistant laminate is made, comprising a plurality of heat and pressure consolidated thermoset resin impregnated filler sheets, where the filler sheets before resin impregnation comprised from about 60 wt. % to about 90 wt. % inorganic filler, up to about 25 wt. % cellulose fibers and from about 0.5 wt. % to about 20 wt. % resinous binder.Type: GrantFiled: October 9, 1980Date of Patent: February 1, 1983Assignee: Westinghouse Electric Corp.Inventors: Harold O. McCaskey, Melvin E. Benson
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Patent number: 4370249Abstract: A fire-resistant, cellulose insulation and method, the cellulose insulation including a predetermined quantity of talc to impart the desired degree of fire-resistant characteristics to the cellulose. Predetermined quantities of boron compounds can be added with the talc to improve the fire-suppressant characteristics of the insulation. The method includes directing ground cellulose from the primary grinding stage into a surge bin to accommodate metering the talc with the cellulose to thereby assure the appropriate distribution ratio of talc in the cellulose.Type: GrantFiled: July 9, 1980Date of Patent: January 25, 1983Assignees: Jack E. White, Franklin N. Smith, Jr.Inventors: Thomas O. Bird, Jack White, Carl H. Bird
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Patent number: 4352719Abstract: A method for producing fire retardant or non-combustible fibrous products. Fibrous organic or inorganic materials, or a mixture thereof, are processed into a slurry, which is then intimately mixed with a boron-containing mineral and a mineral acid. The mixture is allowed to ripen, and is fed into a sheet forming and dewatering apparatus to form a dewatered, fibrous web, which is dried to form the fibrous product.Type: GrantFiled: February 2, 1981Date of Patent: October 5, 1982Assignee: Kataflox Patentverwaltungsgesellschaft mbHInventor: Alfons K. Herr
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Patent number: 4349413Abstract: Thermal insulating material of cellulosic fibers is prepared by treating wood chips or other fibrous cellulosic material with saturated steam at elevated temperatures and pressures and then fiberizing the treated material. A fire-retardant chemical is added to the material immediately prior to fiberization. The resulting fiberized cellulosic material when dried exhibits superior flame and fire resistance properties.Type: GrantFiled: December 4, 1980Date of Patent: September 14, 1982Assignee: The Black Clawson CompanyInventor: Henrik J. Eklund
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Patent number: H349Abstract: A reagent composition which is chemically inert when solid and is chemica reactive when molten comprises a first substance selected from high molecular weight waxes and polymers and a second substance dissolved, dispersed, or encapsulated in the first substance. The second substance is highly chemically reactive and is selected from strong bases and strong acids. The composition is particularly adapted for use in safety devices automatically activated in response to an increase in the temperature of a chemical system and in processes for automatically discontinuing the operation of or decontaminating the products of a malfunctioning chemical system.Type: GrantFiled: March 12, 1987Date of Patent: October 6, 1987Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Kenneth Krevitz, Louis L. Pytlewski, Charles T. Davey