Ingredient Contains A Metal Atom Patents (Class 521/92)
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Patent number: 5154713Abstract: An improved superabsorbent polymer having increased rate of water absorption is obtained by the addition, preferably prior to polymerization, of a carbonate blowing agent to a monomer solution of the monomers used to form the superabsorbent polymer. Preferred monomers include (meth)acrylic acids, preferably partially neutralized prior to polymerization and appropriate cross-linking agents. The carbonate cross-linking agents are any carbonate salt soluble or dispersible in the monomer solution, prior to polymerization. The multi-valent cationic salts of carbonate are preferred, especially the complex carbonates, for example, of magnesium.Type: GrantFiled: March 4, 1992Date of Patent: October 13, 1992Assignee: Nalco Chemical CompanyInventor: Eric J. Lind
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Patent number: 5155144Abstract: A microporous sheet comprising a polymeric matrix having a liquid insoluble, particulate, activated polysaccharide media dispersed therein; use of the sheet in affinity chromatography or ion-exchange chromatography or as a biochemical reactor or battery separator; processes for manufacturing the sheet; apparatus containing the microporous sheet as its active element; and methods for using such sheet.Type: GrantFiled: October 29, 1990Date of Patent: October 13, 1992Inventors: James L. Manganaro, Bruce S. Goldberg, George E. Raynor, Jr., Charles A. Gray
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Patent number: 5151222Abstract: A foam absorber having electromagnetic energy attenuation characteristics comprising an open cell reticulated polyurethane foam impregnated with a conductive ink applied to a surface of the foam substrate. The conductive ink is applied as by spraying to a surface of the foam, coating such surface and gradiently loading the foam with the ink by penetration of the ink in gradually decreasing amount into the foam to a final depth therein. The conductive ink is comprised of an epoxy resin carrier and a combination of carbon and a metal such as silver, copper or nickel, preferably silver. The ink is applied as a curable mixture containing a solvent, to the foam substrate, the solvent is evaporated following coating and penetration of the ink into the foam, and the epoxy carrier of the ink in the foam substrate is cured.Type: GrantFiled: August 26, 1991Date of Patent: September 29, 1992Assignee: McDonnell Douglas CorporationInventor: John M. Ruffoni
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Patent number: 5147904Abstract: Open-pored moldings containing the product of the foaming and setting of (a) an aluminum fluorosilicate glass, (b) at least one polycarboxylic acid with an average molecular weight of >500, (c) a foaming agent, other than carbonates and/or hydrogen-carbonates, (d) optionally a chelating agent and (e) water, are suitable in particular as bone substitute material.Production is carried out by homogeneously mixing (a), (b), (c), optionally (d), and (e), then foaming, shaping and setting.Type: GrantFiled: August 22, 1990Date of Patent: September 15, 1992Assignee: Thera Patent GmbH & Co. KGInventors: Peter Jochum, Oswald Gasser, Manfred Holupirek, Erich Wanek, Rainer Guggenberger, Klaus-Peter Stefan, Klaus Ellrich
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Patent number: 5137655Abstract: A high temperature endothermic blowing agent which is a mixture of a polycarboxylic acid and an inorganic carbonate, the polycarboxylic acid and inorganic carbonate each having been surface treated with a component which prevents water from being absorbed thereby. The blowing agent is incorporated into a polymer and used for producing foamed products.Type: GrantFiled: April 22, 1991Date of Patent: August 11, 1992Assignee: J. M. Huber CorporationInventors: John A. Kosin, Gerry Mooney, Michael A. Tarquini, Rod A. Garcia
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Patent number: 5134170Abstract: An acrylic rubber composition is proposed which is improved in respect of the extrusion-moldability as well as the surface slipperiness of the vulcanized article obtained therefrom. The composition comprises (a) an acrylic rubbery cooplymer which is a copolymer of a (meth)acrylic ester and a coolymerizable organosilicon compound having a silicon-bonded vinyl group in a molecule, (b) a reinforcing filler, (c) a powder of spherical particles having a specified average particle diameter and (d) an organic peroxide as a vulcanizing agent. The composition can be compounded further with a blowing agent to give a foamable rubber composition capable of being vulcanized into a spongy rubber body exhibiting excellent feeling on touch and slipperiness in contact with human skin to be useful, for example, as a material of cosmetic puffs.Type: GrantFiled: November 15, 1991Date of Patent: July 28, 1992Assignees: Nissin Chemical Industry Co. Ltd., Shin-Etsu Chemical Co., Ltd.Inventors: Hiroyuki Ohata, Harukazu Okuda, Satoshi Terasaki, Masaharu Takahashi
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Patent number: 5132331Abstract: A foamable thermoplastic molding composition comprising:a) an aromatic polycarbonate, andb) 0.1 to 5% by weight of a hydrate of an inorganic salt, is disclosed. The salt is inert to the polycarbonate and is capable of releasing its water of hydration only at a temperature above 100.degree. C.The composition which may optionally further contain c) up to 10% by weight of a nucleating agent, and d) up to 30% by weight of glass fibers is characterized by its good pore structure.Type: GrantFiled: December 27, 1991Date of Patent: July 21, 1992Assignees: Bayer Aktiengesellschaft, Miles Inc.Inventors: Burkhart Kohler, Klaus Kircher, Ulrich Grigo, Klaus Horn, Wolfgang Ebert, Charles-Earl Lundy
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Patent number: 5130342Abstract: A microporous particulate-filled thermoplastic polymeric article is provided. The article can be in the form of a film, a fiber, or a tube. The article has a thermoplastic polymeric structure having a plurality of interconnected passageways to provide a network of communicating pores. The microporous structure contains discrete submicron or low micron-sized particulate filler, the particulate filler being substantially non-agglomerated.Type: GrantFiled: July 25, 1990Date of Patent: July 14, 1992Inventors: Jerome W. McAllister, Kevin E. Kinzer, James S. Mrozinski, Eric J. Johnson
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Patent number: 5124098Abstract: There is described a process for producing polyester foam fiber where sodium carbonate and citric acid are added as blowing agent before spinning together with polycarbonate. The proportion of blowing agent is from 0.15 to 0.80 percent by weight of the polyester and the proportion of polycarbonate is from 0.5 to 2 percent by weight of the polyester. The process of the invention makes it possible to produce foam fiber, i.e. filament or staple fiber with discontinuous voids, which may be used for example as carpet fiber and filling fiber for blankets and cushions or as a lining material for winter clothing.Type: GrantFiled: March 7, 1990Date of Patent: June 23, 1992Assignee: Hoechst AktiengesellschaftInventor: Axel Vischer
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Patent number: 5122316Abstract: Processes using high temperature thermoplastic polymers in the in-situ fabrication in the formation of foamed composite sandwich or foam articles often result in weak unsound products which may be avoided by utilizing a high temperature thermoplastic in powder form (22), a blowing agent having a high decomposition temperature (24), and, if desired, reinforcers and/or fillers, (28), mixing the thermoplastic, blowing agent and reinforcer and fillers (30), placing the mixture in a mold and, if forming a composite structure, in abutment with at least one skin (34), and applying sufficient heat and/or pressure to the mold and its contents to melt the thermoplastic and generate gas within said mixture by decomposition of the blowing agent (38). Also, an activator may be included with the blowing agent which promotes the production of gas (26). The thermoplastic should be free from any material which will react with the blowing agent or the activator at temperatures below the melting point of the thermoplastic.Type: GrantFiled: October 11, 1989Date of Patent: June 16, 1992Assignee: Sundstrand CorporationInventors: Hossein Saatchi, Patrick J. Murray, Robert E. Coleman, Kurt A. Smith
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Patent number: 5118719Abstract: An improved superabsorbent polymer having increased rate of water absorption is obtained by the addition, preferably prior to polymerization, of a carbonate blowing agent to a monomer solution of the monomers used to form the superabsorbent polymer. Preferred monomers include (meth)acrylic acids, preferably partially neutralized prior to polymerization and appropriate cross-linking agents. The carbonate cross-linking agents are any carbonate salt soluble or dispersible in the monomer solution, prior to polymerization. The multi-valent cationic salts of carbonate are preferred, especially the complex carbonates, for example, of magnesium.Type: GrantFiled: October 22, 1991Date of Patent: June 2, 1992Assignee: Nalco Chemical CompanyInventor: Eric J. Lind
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Patent number: 5114981Abstract: A flame retardant composition and process which is particularly useful for rebonded foam products. The composition of the present invention includes a solid component of magnesium sulfate, boric acid, decabromodiphenylethylene oxide (DECA) and antimony trioxide and a liquid component of halogenated phosphorous. The present invention is based upon the discovery of the synergism between boric acid and DECA. The process, according to the present invention, includes the steps of forming a dispersion of the solid portion of the flame retardant composition along with a small amount of water based adhesive to a mass of foam chips. The treated chips are then dried to permit handling and storage. The dried foam chips subsequently are mixed with a conventional urethane prepolymer binder and the liquid halogenated phosphorous flame retardant compound. After mixing the foam mass is transferred to molds and steamed to allow the binder to cure.Type: GrantFiled: November 13, 1991Date of Patent: May 19, 1992Assignee: Triad-Fabco, Inc.Inventors: Robert W. Ward, Rogelio Tornero, Freeman J. Henderson
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Patent number: 5110844Abstract: A leather-like thermoplastic polyester series resin sheet is disclosed, comprising a uniformly and finely formed sheet comprising a thermoplastic polyester series resin, wherein said foamed sheet has cells having a diameter of substantially not longer than 1 mm, the cell walls thereof have a thickness of substantially not thicker than 100 .mu.m, and the cell wall constructing each cell extends with irregular bending so as to make a flexibility of not more than 20,000 mg in the Gurley flexibility test. A process for production of the leather-like thermoplastic polyester series resin sheet is also disclosed.Type: GrantFiled: May 13, 1991Date of Patent: May 5, 1992Assignee: Sekisui Kaseihin Kogyo Kabushiki KaishaInventors: Motoshige Hayashi, Norio Amano, Tekeshi Taki, Takaaki Hirai
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Patent number: 5108832Abstract: Disclosed is an intumescent curable composition which contains as a resinous binder a flexible polyepoxide resin. The polyepoxide is cured with an appropriate curing agent adapted for the particular resin. An additive component is present which contains a mixture of materials which provide a source of(i) zinc,(ii) boron,(iii) phosphorus, and(iv) an expansion gas upon thermal decomposition. The composition is capable of forming a carbonaceous char upon exposure to heat or flame, with the proviso that the cured, unburned composition has sufficient flexibility that is passes at least 10 continuous cycles of a cold cycle test without cracking. The cold cycle test involves the following steps: the composition is applied at a thickness of 0.5 inch (12.7 millimeters) to a 10 inch (0.0254 meter) section of a 4W13 I-beam having two thermocouples attached to the surface, allowed to cure at ambient temperature for 16 hours, force cured for 5 days at about 60.degree. C. and subjected to the cold cycle test.Type: GrantFiled: September 28, 1990Date of Patent: April 28, 1992Assignee: PPG Industries, Inc.Inventors: Richard M. Nugent, Jr., Thomas A. Ward, Paul P. Greigger, Jerome A. Seiner
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Patent number: 5106534Abstract: A stabilized powdered endothermic blowing agent which is a mixture of a polycarboxylic acid and an inorganic carbonate, the polycarboxylic acid and inorganic carbonate each having been surface treated with a component which prevents water from being absorbed thereby. The blowing agent is incorporated into a polymeric concentrate used for producing foamed products.Type: GrantFiled: April 22, 1991Date of Patent: April 21, 1992Assignee: J. M. Huber CorporationInventors: Satish K. Wason, Gerry Mooney, Claude R. Andrews, Michael E. Tarquini, John A. Kosin, Rod A. Garcia
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Patent number: 5106677Abstract: The barrier properties, particularly water vapor transmission rate, of compositions comprising a stryene-butadiene polymer can be improved substantially by adding from about 0.5 to 10 percent of a polyethylene type wax to the composition.Type: GrantFiled: November 3, 1989Date of Patent: April 21, 1992Assignee: James River II Inc.Inventors: Gene H. Yeh, Stephen O. Cook
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Patent number: 5075407Abstract: The present invention relates to foamable thermosetting polyurethane structural adhesive composites and compositions and processes for producing the same comprising dispersing a water-generating curing composition into a polyurethane base resin to form a nonactivated adhesive composite, and activating the same by heating to form an adhesive composition. Another aspect of the invention relates to dispersing a water-generating compound and an amine-terminated solid polyamide resin into the polyurethane base resin and heat-activating the same to form an adhesive composition.Type: GrantFiled: April 10, 1989Date of Patent: December 24, 1991Assignee: Rheox, Inc.Inventors: Charles A. Cody, Terrence L. Hartman
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Patent number: 5070119Abstract: Disclosed is an intumescent curable composition which contains as a resinous binder a flexible polyepoxide resin. The polyepoxide is cured with an appropriate curing agent adapted for the particular resin. An additive component is present which contains a mixture of materials which provide a source of(i) zinc,(ii) boron,(iii) phosphorus, and(iv) an expansion gas upon thermal decomposition. The composition is capable of forming a carbonaceous char upon exposure to heat or flame, with the proviso that the cured, unburned composition has sufficient flexibility that it passes at least 10 continuous cycles of a cold cycle test without cracking. The cold cycle test involves the following steps; the composition is applied at a thickness of 0.5 inch (12.7 millimeters) to a 10 inch (0.254 meter) section of a 4W13 I-beam having two thermocouples attached to the surface, allowed to cure at ambient temperature for 16 hours, force cured for 5 days at about 60.degree. C. an subjected to the cold cycle test.Type: GrantFiled: March 11, 1991Date of Patent: December 3, 1991Assignee: PPG Industries, Inc.Inventors: Richard M. Nugent, Jr., Thomas A. Ward, Paul D. Greigger, Jerome A. Seiner
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Patent number: 5064874Abstract: An extruded synthetic resin foam comprises a cell structure of substantially two different cell sizes, the smaller size being not more than about 0.25 mm while the other size is from about 0.4 to about 1 mm. The cells are dispersed in an island in the sea manner. A foam such as a styrenic foam is produced by forming a mixture of synthetic resin, a fine mineral powder having hydroxyl groups, and a cell controlling agent, incorporating a volatile foaming agent and extruding the mixture to form a foam. The powder has a particle size of not more than 1000 nm and may be a silica having silanol groups.Type: GrantFiled: October 31, 1990Date of Patent: November 12, 1991Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Shigeru Motani, Tadayuki Saito, Toshiya Ito
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Patent number: 5061736Abstract: The foamable silicone rubber composition is capable of giving a cured silicone rubber body having a cellular structure and suitable for use as a very reliable fire-resistant joint-sealing member in buildings. In addition to the rather conventional constituents essential in a foamable silicone rubber composition of prior art including (a) a diorganopolysiloxane, (b) a finely divided reinforcing silica filer, (f) a curing agent and (g) a blowing agent, the foamed silicone rubber body obtained by curing the inventive composition is imparted with very reliable fire resistance by virtue of the synergistic effect of the characteristic ingredients including (c) a ferrite powder, (d) a finely divided inorganic material or, in particular, mica flakes, and (e) a platinum compound, in combination, each in a specified amount.Type: GrantFiled: May 6, 1991Date of Patent: October 29, 1991Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masaharu Takahashi, Jun Hatakeyama
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Patent number: 5059637Abstract: A water-base endothermic fire protective material comprising a heat curable thermosetting resin, inorganic fibers, an endothermic inorganic filler, and thermoplastic binder resin is disclosed. The material can vary in viscosity from a putty that is moldable or trowelable into place to a thin paste that can be sprayed to form a flexible and stable fire stop seal or coating. The material with essentially no shrinkage retains strength and adhesion qualities before and after exposure to fire and retains superior resistance to the impact, erosion, and cooling effects of a hose stream used to combat a fire.Type: GrantFiled: May 16, 1991Date of Patent: October 22, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventor: Roger L. Langer
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Patent number: 5057252Abstract: A method of forming a heat-resistant product, produced from a polymer composition comprising 40-70 weight % of a thermoplastic elastomer containing a repeating unit derived from ethylene and a repeating unit derived from propylene and 60-30 weight % of an ethylene-vinyl acetate copolymer containing 7.5 weight % or more of a vinyl acetate repeating unit, which comprises blending the polymer composition at a temperature of 160.degree. C. or less, molding it at a temperature of 180.degree. C. or less, and then cross-linking the resulting molded product by irradiating it with an electron beam or by heating to produce a foamed product which has good shape memory characteristics.Type: GrantFiled: July 2, 1990Date of Patent: October 15, 1991Assignee: Tonen Sekiyukagaku Kabushiki KaishaInventors: Seiji Kagawa, Hideaki Toda, Shinichiro Nomura
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Patent number: 5057479Abstract: A storage stable aqueous dispersion useful in the curing of unsaturated polyester resins and the suspension polymerization of vinyl monomers containing an aromatic diacyl peroxide, an alkylene glycol and dispersion-stabilizing amounts of magnesium aluminum silicate and a cellulose ether compound is disclosed. Also disclosed are the curing of polyester resins and the suspension polymerization of vinyl monomers using the dispersion.Type: GrantFiled: February 1, 1991Date of Patent: October 15, 1991Assignee: Witco CorporationInventor: Lawrence A. Bock
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Patent number: 5047440Abstract: An activator useful in combination with a primary chemical blowing agent in foaming polymer resins comprises an activator and a metal soap dispersed in a polymeric carrier resin. The metal soap is present in an effective amount to disperse the activator throughout the carrier resin.Type: GrantFiled: July 17, 1989Date of Patent: September 10, 1991Assignee: Quantum Chemical CorporationInventor: Claude F. Wilson, Jr.
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Patent number: 5047438Abstract: Porous, rigid resin particles are prepared having a predetermined particle size distribution, surface area and porosity by polymerizing in the pores of porous inorganic template particles a reaction mixture comprising monovinyl monomers, polyvinyl crosslinking monomers and a polymerization initiator in a liquid medium in which the monomers and initiator are phase separable and extractable therefrom into the pores of the template particles. The extracted mixture is polymerized in the pores of the template particles, and the template particles are removed without destruction of the polymerizate. The isolated polymerizate mirrors the characteristics of the template particles. The surface of the polymerizate may be modified in various ways to contain desired functionality. The particles of the invention are useful in chromatography, adsorption, ion exchange, and in catalysis.Type: GrantFiled: September 26, 1988Date of Patent: September 10, 1991Assignee: Supelco, Inc.Inventors: Binyamin Feibush, Nai-Hong Li
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Patent number: 5045570Abstract: Compositions for producing foamed products which include additives and blowing agents which cause the surface treatment additives to migrate to the surfaces of foamed products. The products produced from the compositions require less additives because the incorporated additives are concentrated at the surface thereof.Type: GrantFiled: January 19, 1990Date of Patent: September 3, 1991Assignee: J. M. Huber CorporationInventors: Gerry Mooney, Rod A. Garcia, Michael E. Tarquini, John A. Kosin
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Patent number: 5041466Abstract: An efficient method for the preparation of a foamed and cured silicone rubber body having a uniform fine-cellular structure, in which a foamable silicone rubber composition is prepared by uniformly compounding a diorganopolysiloxane, finely divided silica filler, titanium dioxide powder, blowing agent and curing agent, each in a specified weight proportion, and irradiating the thus prepared composition with microwaves having a frequency of 900 to 5000 MHz which, by virtue of the titanium dioxide powder having a high dielectric constant, are efficiently absorbed and converted to heat, whereby the composition is evenly heated throughout the body to cause uniform foaming and curing.Type: GrantFiled: September 17, 1990Date of Patent: August 20, 1991Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masaharu Takahashi, Jun Hatakeyama
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Patent number: 5037580Abstract: Compositions for producing foamed products which include filler and/or pigment additives and blowing agents which enhance the strength of weld lines which are produced when the compositions are molded. The products produced from the compositions have weld line that demonstrate superior strengths as compared to similar foamed products which do not utilize the particular blowing agents.Type: GrantFiled: January 19, 1990Date of Patent: August 6, 1991Assignee: J. M. Huber CorporationInventors: Rod A. Garcia, John A. Kosin, Gerry Mooney, Michael E. Tarquini
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Patent number: 5030662Abstract: Construction materials prepared from recycled polymeric material containing primarily polyolefins such as high density polyethylene, ultra high molecular weight polyethylene, low density polyethylene, linear low density polyethylene, and polypropylene homopolymers and copolymers are useful for profiled extruded forms such as fence posts, door frames, rails, railway sleepers, and other applications where lumber is conventionally employed. The compositions of the invention contain, in addition to the mixed plastic matrix, reactive compatibilizers, impact modifiers, and reinforcing agents. When desired, foaming agents may also be employed. The recycled mixed plastic materials have been subject to at least one high temperature processing step when used in their original application. Such plastics differ in physical and chemical composition from virgin material.Type: GrantFiled: August 11, 1988Date of Patent: July 9, 1991Assignee: Polymerix, Inc.Inventor: Asis K. Banerjie
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Patent number: 5023278Abstract: An improved process for producing sulfur-cured polyphosphazene foams is disclosed. The process comprises foaming more than one storable, stable accelerator base composition comprising the sulfur curing agent, a phosphazene oil and a polyphosphazene. A masterbatch of the same or similar polyphosphazene is made by mixing together a hydrated filler, processing aids and phosphazene oil. The matchbatch and accelerator base composition are then blended and foamed and cured.Type: GrantFiled: November 20, 1989Date of Patent: June 11, 1991Assignee: Ethyl CorporationInventors: Hugh A. Fisher, Susan D. Landry, Troy L. Smith, Jr.
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Patent number: 5019295Abstract: A foamable silicone rubber composition comprising:(A) a particular diorganopolysiloxane,(B) a powdery silica filler,(C) a particular conductive metallic oxide powder,(D) a foaming agent, and(E) a vulcanizing agent. This composition can be cured by ultra high frequency vulcanization to produce a cured silicone rubber foam.Type: GrantFiled: March 30, 1990Date of Patent: May 28, 1991Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takeo Yoshida, Masaharu Takahashi
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Patent number: 5009810Abstract: A stabilized powdered endothermic blowing agent which is a mixture of a polycarboxylic acid and an inorganic carbonate, and polycarboxylic acid and inorganic carbonate each having been surface treated with a component which prevents water from being absorbed thereby. The blowing agent is incorporated into a polymeric concentrate used for producing foamed products.Type: GrantFiled: May 16, 1989Date of Patent: April 23, 1991Assignee: J. M. Huber CorporationInventors: Satish K. Wason, Gerry Mooney, Claude R. Andrews, Michael E. Tarquini, John A. Kosin, Rod A. Garcia
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Patent number: 5009809Abstract: A high temperature endothermic blowing agent which is a mixture of a polycarboxylic acid and an inorganic carbonate, the polycarboxylic acid and inorganic carbonate each having been surface treated with a component which prevents water from being absorbed thereby. The blowing agent is incorporated into a polymer and used for producing foamed products.Type: GrantFiled: January 19, 1990Date of Patent: April 23, 1991Assignee: J. M. Huber CorporationInventors: John A. Kosin, Gerry Mooney, Michael A. Tarquini, Rod A. Garcia
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Patent number: 5008296Abstract: A soft, flexible, microporous film is provided having high tensile strength and good air and water vapor transmission rates therethrough while being substantially impenetrable to liquid water. This film is prepared by stretching a casting of a composition of a polyolefin and high levels of CaCO.sub.3 or glass beads and calcium stearate in two directions from 1.5-7 times in each direction to produce a film having a Gurley porosity of from 0.1 to 85 seconds. This film is especially useful for disposable items such as feminine panty liners, diapers, bed sheets, and hospital gowns. When glass beads are substituted for the CaCO.sub.3, the film is useful for battery separators.Type: GrantFiled: March 29, 1990Date of Patent: April 16, 1991Assignee: Hercules IncorporatedInventors: Mitchell K. Antoon, Jr., David J. Hill
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Patent number: 4994500Abstract: Active and elastic foamed materials useful for heating elements and medical materials comprising a foamed matrix of natural rubber, synthetic rubber or synthetic resin and an active substance contained therein, the active substance being zircon or zirconium complex compound and the content of said substance being 20-150 wt % to the foamed matrix.Type: GrantFiled: September 19, 1989Date of Patent: February 19, 1991Inventor: Keiichi Yamamoto
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Patent number: 4990542Abstract: An extruded synthetic resin foam comprises a cell structure of substantially two different cell sizes, the smaller size being not more than about 0.25 mm while the other size is from about 0.4 to about 1 mm. The cells are dispersed in an island in the sea manner. A foam such as a styrenic foam is produced by forming a mixture of synthetic resin, a fine mineral powder having hydroxyl groups, and a cell controlling agent, incorporating a volatile foaming agent and extruding the mixture to form a foam. The powder has a particle size of not more than 100 nm and may be a silica having silanol groups.Type: GrantFiled: August 1, 1989Date of Patent: February 5, 1991Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Shigeru Motani, Tadayuki Saito, Toshiya Ito
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Patent number: 4980383Abstract: A foamed article of a chlorinated vinyl chloride resin containing an inorganic material, which contains an inorganic fibrous material in an amount of not less than 0.003 g per 1 cm.sup.3 of the article or inorganic particles in an amount of not less than 0.06 g per 1 cm.sup.3 of the article and which has dimensional retention of not less than 70% when the article is heated at 200.degree. C.Type: GrantFiled: November 30, 1988Date of Patent: December 25, 1990Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Hisao Shimazu, Yoshihiro Kimura
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Patent number: 4980384Abstract: A foamed cellular body of a cured silicone rubber composition can be obtained in a continuous process by irradiating a foamable silicone rubber composition containing, in addition to conventional diorganopolysiloxane, finely divided silica filler, blowing agent and crosslinking agent, a substantial amount of a dielectric inorganic powder, which is an iron oxide or a ferrite, with UHF microwaves. When the silicone rubber composition as molded is irradiated with UHF microwaves, the energy of the microwaves absorbed by the dielectric powder is efficiently converted into heat so that the molded body can be very evenly heated to effect foaming vulcanization of the composition giving a foamed and cured silicone rubber article having an excellently fine and uniform cellular structure.Type: GrantFiled: August 17, 1989Date of Patent: December 25, 1990Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masaharu Takahashi, Takeo Yoshida
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Patent number: 4978474Abstract: The present invention discloses a heat pumpable expandable weld through sealant comprising a combination of a terpolymer and a copolymer, a curing agent, electrically conductive particles and a blowing agent. Also disclosed is a method of bonding two metal components using this sealant.Type: GrantFiled: July 24, 1987Date of Patent: December 18, 1990Assignee: United Technologies Automotive Inc.Inventor: Thomas K. Johnston
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Patent number: 4965296Abstract: A fire-retardant coating material includes a fluid intumescent material and conductive particles of various sizes dispersed or suspended therein for particular applications. The fluid intumescent material includes a foaming agent, a blowing agent gas source, a carbonific or charring agent, a film-forming binder, a solvent and, in some cases, a pigment or filler. The conductive particles are formed of a substrate and a conductive coating.Type: GrantFiled: November 6, 1989Date of Patent: October 23, 1990Assignee: No Fire Engineering, Inc.Inventor: Otis H. Hastings
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Patent number: 4957943Abstract: A microporous particulate-filled thermoplastic polymeric article is provided. The article can be in the form of a film, a fiber, or a tube. The article has a thermoplastic polymeric structure having a plurality of interconnected passageways to provide a network of communicating pores. The microporous structure contains discrete submicron or low micron-sized particulate filler, the particulate filler being substantially non-agglomerated.Type: GrantFiled: October 14, 1988Date of Patent: September 18, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jerome W. McAllister, Kevin E. Kinzer, James S. Mrozinski, Eric J. Johnson, James F. Dyrud
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Patent number: 4956396Abstract: A new rigid polyvinyl chloride foam is provided which has been improved with respect to the thickness of its non-foamed layer and the surface properties including its tensile strength and compressive strength. The foam can be produced preferably by mixing 3-10 parts per hundred of resin (per hundred resin) of dioctyl phthalate and 4-20 phr of an impact-resistance modifier such as a methyl methacrylate acid-butadiene-styrene copolymer with a composition of 100 phr of vinyl chloride resin, 5 phr of a processing aid, 2 phr of a heat stabilizer, 0.5 phr of a lubricant, 0.75 phr of a foaming agent and 0.75 phr of boric acid, and then extruding the resulting mixture from a single-screw extruder.Type: GrantFiled: March 6, 1989Date of Patent: September 11, 1990Assignee: Korea Advanced Institute of Science & TechnologyInventors: Kwang-Ung Kim, Byoung-Chul Kim, Soon-Man Hong
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Patent number: 4952428Abstract: A composition useful in the manufacture of cable comprising:(i) a crosslinkable thermoplastic polymer;(ii) a metal hydrate flame retardant compound; and(iii) an organic peroxide crosslinking compound, which decomposes at a temperature of at least about 140.degree. C., but below the decomposition temperature of the polymer.Type: GrantFiled: December 7, 1988Date of Patent: August 28, 1990Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventor: Michael J. Keogh
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Patent number: 4952615Abstract: A fireproof, compressible, intumescent, elastomeric material useful to seal expansion joints, curtain wall gaps and penetrations in floors and walls in order to prevent the passage of flame and smoke. A seal of the material retains strength before and after exposure to fire and provides superior resistance to the impact, erosion, and cooling effects of a hose stream used to combat a fire. The composition of this compressible, fireproof material consists of elastomers, vulcanizing agents, fillers, softening agents, and an intumescent. This fireproof material may be in cellular or noncellular form with various degrees of compressibility and softness. It can be produced in sheets, molded parts, and continuous length strips. It may be vulcanized or nonvulcanized.Type: GrantFiled: May 13, 1988Date of Patent: August 28, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventor: Walton W. Welna
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Patent number: 4945015Abstract: An intumescent material comprises expandible graphite in a polymeric binder. The binder may be a flexible or elastomeric binder or a formaldehyde resin. A suitable flexible binder is a polymer selected from vinyl acetate polymers, styrene polymers, vinyl chloride polymers, acrylic polymers, vinyl butyral polymers, melamine/urea/phenol formaldehyde resins, polyesters and phenolic resins. A suitable elastomeric binder is a rubber. A suitable formaldehyde resin is melamine formaldehyde resin, urea formaldehyde resin, phenol formaldehyde resin or resorcinol formaldehyde resin.Type: GrantFiled: March 13, 1989Date of Patent: July 31, 1990Assignee: Dixon International LimitedInventors: Bruce A. Milner, Tessa Malcolm-Brown, Eric Southern
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Patent number: 4943596Abstract: Silicone foams are provided which have increased tensile strength as the result of using an effective amount of a silicone polyimide block copolymer having chemically combined organovinylsiloxy units in the silicone block.Type: GrantFiled: November 21, 1988Date of Patent: July 24, 1990Assignee: General Electric CompanyInventors: David C. Gross, Connie L. Haig, Jonathan D. Rich
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Patent number: 4942069Abstract: A composition useful in the manufacture of cable comprising:(i) a thermpolastic polymer;(ii) a metal hydrate flame retardant compound; and(iii) a blowing agent, which decomposes at a temperature in the range of about 160.degree. C. to the decomposition temperature of the thermpolastic polymer.Type: GrantFiled: December 7, 1988Date of Patent: July 17, 1990Assignee: Union Carbide Chemicals and Plastics Company, Inc.Inventor: Michael J. Keogh
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Patent number: 4940735Abstract: The present invention deals with a novel blowing agent masterbatch for the preparation of polystyrene foams, comprising:(a) 30 to 80 weight percent of a plasticizer-containing polystyrene having a Vicat softening temperature between 30.degree. and 50.degree. C.;(b) 20 to 70 weight percent of blowing agent based on solid organic acids and alkali metal (bi) carbonates; and optionally(c) 10 to 20 weight percent of cell regulators.Type: GrantFiled: March 23, 1989Date of Patent: July 10, 1990Assignee: BASF AktiengesellschaftInventor: Gerhard Kress
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Patent number: 4940732Abstract: A storage stable aqueous dispersion useful in the curing and foaming of unsaturated polyester resins comprising an aromatic diacyl peroxide, an alkali metal carbonate or bicarbonate, dispersion-stabilizing amount of magnesium aluminum silicate and an alkali metal carboxymethyl cellulose, glycerol and water. As an optional component this composition can also contain an anionic dispersing agent. Also disclosed is the preparation of foamed polyester resins using the dispersion.Type: GrantFiled: November 30, 1989Date of Patent: July 10, 1990Assignee: Witco CorporationInventors: Ronald L. Pastorino, Lawrence A. Bock
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Patent number: 4933372Abstract: Porous, rigid resin particles are prepared having a predetermined particle size distribution, surface area and porosity by polymerizing in the pores of porous inorganic template particles a reaction mixture comprising monovinyl monomers, polyvinyl crosslinking monomers and a polymerization initiator in a liquid medium in which the monomers and initiator are phase separable and extractable therefrom into the pores of the template particles. The extracted mixture is polymerized in the pores of the template particles, and the template particles are removed without destruction of the polymerizate. The isolated polymerizate mirrors the characteristics of the template particles. The surface of the polymerizate may be modified in various ways to contain desired functionality. The particles of the invention are useful in chromatography, adsorption, ion exchange, and in catalysis.Type: GrantFiled: November 7, 1989Date of Patent: June 12, 1990Assignee: Supelco, Inc.Inventors: Binyamin Feibush, Nai-Hong Li