Ingredient Is A Nitrogen Containing Compound Patents (Class 521/94)
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Patent number: 4684669Abstract: The production of foamed articles of polyphenylene ether resins is improved by including a modifier comprising an alpha, beta-unsaturated carboxylic acid or derivative. The resulting products are lightweight, exhibit superior heat resistance and retain flame retardancy over polyphenylene ether resins which are foamed in the absence of the modifier. Such resins are especially suited for the production of extrusion and injection foam molding materials.Type: GrantFiled: November 3, 1986Date of Patent: August 4, 1987Assignee: General Electric CompanyInventor: Ronald J. Wroczynski
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Patent number: 4681716Abstract: The present invention is a process for the preparation of polybenzimidazole foams. Polybenzimidazoles containing 10 to 30 percent by weight residual solvent can be heated at a temperature of about 350.degree. C. to about 600.degree. C. to produce three dimensional foamed articles.Type: GrantFiled: March 3, 1986Date of Patent: July 21, 1987Assignee: Celanese CorporationInventor: John S. Letinski
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Patent number: 4675345Abstract: Foamable and foamed polyvinylidene fluoride materials prepared by compounding the PVDF with a suitable nucleating agent of discreet insoluble particles, a blowing agent having an activation temperature above the melting point of the PVDF, and a dispersing aid to provide a substantially homogeneous powdered mixture that is then melt compounded with high shear melt blending means and the extruded and quenched to provide the foamable polyvinylidene fluoride material which can then be extruded as an insulating material on wire at a temperature sufficiently high to activate the blowing agent.Type: GrantFiled: July 15, 1986Date of Patent: June 23, 1987Assignee: Penwalt CorporationInventor: Roger L. Pecsok
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Patent number: 4666947Abstract: Compositions based on ethylene/vinylacetate copolymers provided with self-extinguishing properties and suitable for the preparation of foamed materials, comprising for 100 parts by weight of the EVA copolymers:from 5 to 10 parts by weight of at least a bromodiphenylether containing at least 3 bromine atoms;from 2 to 4 parts by weight of a metal oxide selected from antimony, bismuth and tungsten oxides; andfrom 0.1 to 1 part by weight of a compound having general formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, equal or different from each other, can by hydrogen, chlorine, bromine, aliphatic hydrocarbon radicals containing from 1 to 6 carbon atoms, cyclohexyl or phenyl radicals, the nitro group or the --CN group.R.sub.5, R.sub.6, equal or different, can be hydrogen, chlorine, bromine, aliphatic hydrocarbon radicals containing from 1 to 3 carbon atoms, or alkoxy radicals containing 1 to 4 carbon atoms or ##STR2## groups, R.sub.7 being an alkyl radical containing from 1 to 3 carbon atoms.Type: GrantFiled: November 13, 1984Date of Patent: May 19, 1987Assignee: Montepolimeri S.p.A.Inventors: Corrado Brichta, Annibale Vezzoli, Pietro Origgi
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Patent number: 4663361Abstract: An expandable polyolefin composition and a method of preparation are provided. Isobutane or mixtures of isobutane with other physical blowing agents are utilized to expand polyolefin compositions which have been modified by the addition of a stability control agent. The composition has a high degree of dimensional stability and exhibits minimal shrinkage during curing and/or aging.Type: GrantFiled: March 24, 1986Date of Patent: May 5, 1987Assignee: The Dow Chemical CompanyInventor: Chung P. Park
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Patent number: 4655962Abstract: A blowing agent composition, comprising: (i) azodicarbonamide; (ii) zinc oxide and/or zinc carbonate; and (iii) at least one member selected from the group consisting of zinc salts of C.sub.1 -C.sub.6 organic acids, and C.sub.1 -C.sub.6 organic carboxamides characterized by a high gas evolution rate. The blowing agent composition may be used in effective amounts in formulations containing a foamable polymer to yield an efficiently gas expanded polymeric composition upon exposure to heat. Suitable C.sub.1 -C.sub.6 organic acids for said zinc salts include straight-chain carboxylic acids, and useful organic carboxamides include formamide.Type: GrantFiled: March 25, 1986Date of Patent: April 7, 1987Assignee: Uniroyal Chemical Company, Inc.Inventors: Donald G. Rowland, Byron A. Hunter, Lee D. Hansen
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Patent number: 4640933Abstract: An expandable polyolefin composition and a method of preparation are provided. Isobutane or mixtures of isobutane with other physical blowing agents are utilized to expand polyolefin compositions which have been modified by the addition of a stability control agent. The composition has a high degree of dimensional stability and exhibits minimal shrinkage during curing and/or aging.Type: GrantFiled: May 27, 1986Date of Patent: February 3, 1987Assignee: The Dow Chemical CompanyInventor: Chung P. Park
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Patent number: 4634721Abstract: The present invention relates to an improved nitro urea compound specifically the zinc salt of nitro urea useful as a blowing agent composition, its preparation and its use.Type: GrantFiled: March 18, 1986Date of Patent: January 6, 1987Assignee: Uniroyal Chemical Company, Inc.Inventors: Byron A. Hunter, Donald G. Rowland, Warren J. Peascoe
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Patent number: 4629744Abstract: A composition for use in a chloride ion electrode is provided herein. This composition is made up of a mixture of an epoxy resin, a vinyl chloride resin, one or more solvents, a quaternary ammonium salt and hardening agents for setting said epoxy resin; wherein said epoxy resin and the vinyl chloride resin is used at a ratio of 8:1 to 1:2 by weight. The present invention also relates to a response membrane produced from said composition and a method for producing the response membrane by setting or hardening the aforementioned composition. When the response membrane is used in the chloride ion selective electrode, it is capable of measuring a sample containing blood or protein and by use of the response membrane, it is possible to selectively determine chloride ions in a sample with a high degree of accuracy.Type: GrantFiled: March 20, 1985Date of Patent: December 16, 1986Assignee: Horibe, Ltd.Inventors: Hiroaki Uematsu, Takeshi Kohno, Takeshi Miyazaki
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Patent number: 4628068Abstract: Expandable styrene polymer particles which have anti-static and anti-lumping properties during expansion and after molding into an article are produced by adding 0.1 to 0.4 parts of dialkyl bisalkoxylated quaternary ammonium salts per 100 parts of polymer particles by coating of the expandable polymer particles with the salts. The salts may be added as sole antistatic agent or in addition to the known internal additives which impart fastcool and antilump properties.Type: GrantFiled: May 1, 1986Date of Patent: December 9, 1986Assignee: Atlantic Richfield CompanyInventors: Haven S. Kesling, Jr., James J. Harris
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Patent number: 4623671Abstract: Novel foamed thermoplastic resins are disclosed. The foam includes an ionically associated blend containing at least about 60 weight % of a metal salt of a styrene-acrylic acid copolymer and at least 1 weight % of a metal salt of an ethylene-acrylic acid copolymer. The foams typically are prepared by extruding a ternary mixture of a styrene-acrylic acid copolymer, an ethylene-acrylic copolymer and an alkali metal bicarbonate which functions as the foaming agent. The ionically associated blends included in the foam are believed to be novel compositions of matter.Type: GrantFiled: October 29, 1985Date of Patent: November 18, 1986Assignee: The Dow Chemical CompanyInventor: Chung P. Park
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Patent number: 4622345Abstract: Expandable styrene polymer particles which have anti-static and anti-lumping properties during expansion and after molding into an article are produced by adding 0.1 to 0.4 parts of trialkyl alkylalkoxylated quaternary ammonium salts, per 100 parts of polymer particles by coating of the expandable polymer particles with the salts. The salts may be added as sole antistatic agent or in addition to the known internal additives which impart fast-cool and anti-lump properties.Type: GrantFiled: May 1, 1986Date of Patent: November 11, 1986Assignee: Atlantic Richfield CompanyInventors: Haven S. Kesling, Jr., James J. Harris
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Patent number: 4615850Abstract: Foamable and foamed polyvinlyidene fluoride materials prepared by compounding the PVDF with a suitable nucleating agent of discreet insoluble particles, a blowing agent having an activation temperature above the melting point of the PVDF, and a dispersing aid to provide a substantially homogeneous powdered mixture that is then melt compounded with high shear melt blending means and then extruded and quenched to provide the foamable polyvinlyidene fluoride material which can then be extruded as an insulating material on wire at a temperature sufficiently high to activate the blowing agent.Type: GrantFiled: July 16, 1984Date of Patent: October 7, 1986Assignee: Pennwalt CorporationInventor: Roger L. Pecsok
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Patent number: 4614753Abstract: A method for producing foam polyolefin products which are light-stable and weather-resistant are obtained by the combined use of the following stabilizers:(a) phenolic antioxidants,(b) substituted benzophenones and/or substituted benzotriazoles, and(c) sterically hindered amines.Type: GrantFiled: February 14, 1986Date of Patent: September 30, 1986Assignee: Dynamit Nobel AGInventors: Werner Kuhnel, Paul Spielau
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Patent number: 4590221Abstract: A method for producing foam polyolefin products which are light-stable and weather-resistant are obtained by the combined use of the following stabilizers:(a) phenolic antioxidants,(b) substituted benzophenones and/or substituted benzotriazoles, and(c) sterically hindered amines.Type: GrantFiled: November 28, 1984Date of Patent: May 20, 1986Assignee: Dynamit Nobel AGInventors: Werner Kuhnel, Paul Spielau
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Patent number: 4585802Abstract: The present invention relates to an improved nitro urea compound specifically the zinc salt of nitro urea useful as a blowing agent composition, its preparation and its use.Type: GrantFiled: August 9, 1985Date of Patent: April 29, 1986Assignee: Uniroyal Chemical Company, Inc.Inventors: Byron A. Hunter, Donald G. Rowland, Warren J. Peascoe
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Patent number: 4576971Abstract: Flame retarded polyacrylimide or polymethacrylimide resin foams containing at least 70 percent by weight of cyclic acrylimide or methacrylimide units and incorporating at least 1 percent by weight of phosphorus, present at least partially in the form of a phosphorus compound, XCH.sub.2 --PO(OR).sub.2, wherein R is methyl, ethyl, or chloromethyl, and X is hydrogen, halogen, hydroxyl, or RO--CO--.Type: GrantFiled: December 18, 1984Date of Patent: March 18, 1986Assignee: Rohm GmbHInventors: Ehrenfried Baumgartner, Siegmund Besecke, Wolfgang Gaenzler
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Patent number: 4569950Abstract: A novel foam composed of closed cells having a specific tensile strength of 150 kg/cm.sup.2 or more, a compression recovery of 80% or more and a heat shrinkage of 50% or less, a variation in thickness of foam of less than 50%, a corrugation value of less than 100% and a surface smoothness of less than 2 mm, an average cell diameter of 0.05-3 mm, said foam having a foam density of 0.007-0.10 g/cm.sup.3, a variation in thickness of cell wall film of .+-.30% or less and a variation factor of cell diameter of 70% or less, obtained by foaming a composition consisting essentially of 100 parts by weight of a substantially non-crosslinked polyethylene having a density of 0.935 g/cm.sup.3 or more and a melting point of 117.degree. C. or more, 0.05-10 parts by weight of a foaming decelerant having the capability of prolonging the foaming time by at least one second as compared with the absence of the foaming decelerant, as measured by a glass tube blowing test method, and 0.001-5 parts by weight of a nucleating agent.Type: GrantFiled: April 10, 1985Date of Patent: February 11, 1986Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Kouroku Hoshi, Shoji Noro
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Patent number: 4563499Abstract: Polyoxyalkylene foam stabilizing surfactants can be prepared by reacting a polyoxyalkylene adduct, a cyclic nitrogenous vinyl monomer and an esterified unsaturated dibasic acid under free radical polymerization conditions in the presence of a free radical initiator, and by subjecting the reaction product obtained to a solvent extraction. The isolated components can be utilized as surfactants in producing cellular foams.Type: GrantFiled: April 12, 1985Date of Patent: January 7, 1986Assignee: The Celotex CorporationInventors: Richard L. Frentzel, Ernest K. Moss
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Patent number: 4554294Abstract: The present invention relates to an improved nitro urea compound specifically the zinc salt of nitro urea useful as a blowing agent composition, its preparation and its use.Type: GrantFiled: December 5, 1984Date of Patent: November 19, 1985Assignee: Uniroyal, Inc.Inventors: Byron A. Hunter, Donald G. Rowland, Warren J. Peascoe
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Patent number: 4543368Abstract: The present invention relates to a foamable polyetherimide resin. These foamable polyetherimides have an effective amount of a chemical blowing agent which decomposes at a temperature equal to or greater than the glass transition temperature of the polyetherimide resin and does not have an adverse effect on the polyetherimide.Type: GrantFiled: November 9, 1984Date of Patent: September 24, 1985Assignee: General Electric CompanyInventors: Robert W. Smearing, Daniel E. Floryan
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Patent number: 4539337Abstract: A backing material consisting essentially of a two part phthalallic polyester resin including an expansion agent and a filler in an amount to offset shrinking during curing.Type: GrantFiled: March 22, 1984Date of Patent: September 3, 1985Inventor: John C. B. Blore
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Patent number: 4535094Abstract: Highly desirable alkenylaromatic monomer olefinically unsaturated acid foams are prepared by extrusion using as a blowing agent inorganic compounds such as sodium bicarbonate, either alone or in combination with volatile fluid foaming agents.Type: GrantFiled: March 12, 1984Date of Patent: August 13, 1985Assignee: The Dow Chemical CompanyInventors: Chung P. Park, Kyung W. Suh
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Patent number: 4532265Abstract: Highly desirable alkenylaromatic monomer olefinically unsaturated acid foams are prepared by extrusion using as a blowing agent inorganic compounds such as sodium bicarbonate, either alone or in combination with volatile fluid foaming agents.Type: GrantFiled: March 12, 1984Date of Patent: July 30, 1985Assignee: The Dow Chemical CompanyInventors: Chung P. Park, Kyung W. Suh
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Patent number: 4532264Abstract: Excellently properties, thermoplastic compositions well adapted for conversion by conventional melt-processing extrusion and other ordinary fabrication techniques into very good quality, lightly cross-linked, thermocollapse-resistant, closed-cell plastic foam(s) and the like expanded cellular product(s) are comprised of an intimate mixture of:(A) a sparsely hydroxylated, normally-solid olefin polymer, particularly a linear alkenyl aromatic or polyolefin polymer which is frequently at least substantially a styrene polymer which is generally in copolymeric form with appropriate moieties of comonomers adapted to provide the requisite attached hydroxyl units therein and thereon; and(B) a minor proportion of an inter-reactive, cross-linking polyisocyanate constituent.Type: GrantFiled: April 27, 1984Date of Patent: July 30, 1985Assignee: The Dow Chemical CompanyInventor: Louis C. Rubens
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Patent number: 4528300Abstract: The use in conventional polyolefin extrusion foaming processes of a stability control agent (e.g., stearamide, EAA copolymer, etc.) in conjunction with certain mixed blowing agent systems, the mixed blowing agent system containing 60-95 weight percent of 1-chloro-1,1-difluoroethane or 60-95 weight percent of 1,1-difluoroethane. These compounds have a shorter atmospheric lifetime and lower stability than the saturated chlorofluorocarbons presently used as blowing agents or in blowing agent systems.Type: GrantFiled: January 31, 1984Date of Patent: July 9, 1985Assignee: The Dow Chemical CompanyInventor: Chung P. Park
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Patent number: 4525487Abstract: A spray method for making cured polyester resin foam is provided using a liquid unsaturated polyester resin, a sulfonyl hydrazide, an effective amount of a promoter, an effective amountof a catalyst and 0.005-3 parts quaternary ammonium salt.Type: GrantFiled: August 11, 1983Date of Patent: June 25, 1985Assignee: Uniroyal, Inc.Inventors: James Ahnemiller, Warren J. Peascoe
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Patent number: 4522877Abstract: Polyoxyalkylene foam stabilizing surfactants can be prepared by reacting a polyoxyalkylene adduct, a cyclic nitrogenous vinyl monomer and an esterified unsaturated dibasic acid under free radical polymerization conditions in the presence of a free radical initiator, and by subjecting the reaction product obtained to a solvent extraction. The isolated components can be utilized as surfactants in producing cellular foams.Type: GrantFiled: November 13, 1984Date of Patent: June 11, 1985Assignee: The Celotex CorporationInventors: Richard L. Frentzel, Ernest K. Moss
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Patent number: 4511679Abstract: A process for preparing a rubber-asphalt composition, which comprises blending a particulate or powdery rubber composition comprising 100 parts by weight of a particulate or powdery rubber having a particle size of at most 2 mm and from 0.1 to 50 parts by weight of a particulate or powdery blowing agent having a particle size of at most 1 mm, with asphalt containing from 0.1 to 30 parts by weight of an organic base, based on 100 parts by weight of the asphalt.Type: GrantFiled: December 15, 1983Date of Patent: April 16, 1985Assignee: Toyo Soda Manufacturing Co., Ltd.Inventors: Takashi Ariyoshi, Noriaki Emura, Yasuhiro Sakanaka
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Patent number: 4489913Abstract: Electroconductive foams are prepared by dehydrohalogenating a foam containing a halogen-containing polymer.Type: GrantFiled: March 19, 1984Date of Patent: December 25, 1984Assignee: The Dow Chemical CompanyInventors: Arthur E. Gurgiolo, Thomas M. Knobel
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Patent number: 4485194Abstract: Polyoxyalkylene foam stabilizing surfactants can be prepared by reacting a polyoxyalkylene adduct, a cyclic nitrogenous vinyl monomer and an esterified unsaturated dibasic acid under free radical polymerization conditions in the presence of a free radical initiator, and by subjecting the reaction product obtained to a solvent extraction. The isolated components can be utilized as surfactants in producing cellular foams.Type: GrantFiled: October 17, 1983Date of Patent: November 27, 1984Assignee: The Celotex CorporationInventors: Richard L. Frentzel, Ernest K. Moss
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Patent number: 4480054Abstract: Compatible blends of an ethylene/methacrylic or ethylene/acrylic acid dipolymer or a terpolymer with n-butyl or isobutyl acrylate with an ethylene/X/Y terpolymer, where X is vinyl acetate or an alkyl acrylate and Y is CO or SO.sub.2, with an elastomer, a blowing agent, and a curing agent can be readily formed into stiff foamed articles having very good physical properties, especially split tear and tensile strength. The foamed articles are useful, among others, in such applications as footwear, insulation, shock absorbance, floatation devices, seals and, gaskets.Type: GrantFiled: January 23, 1984Date of Patent: October 30, 1984Assignee: E. I Du Pont de Nemours and CompanyInventor: Susan J. Enderle
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Patent number: 4469819Abstract: A continuous process for making rigid PVC foam objects by extruding a preform from an initial PVC mixture, optionally cutting the preform into blanks, and expanding the preform or the blanks in water heated to a temperature above 70.degree. C. The initial mixture contains polyvinyl chloride, at least a first blowing agent capable of generating a gas, for example an isocyanate or a polyisocyanate, and at least one organic anhydride (and does not contain any added inert particles finely divided therein). The initial mixture may also contain less than one weight percent of a second blowing agent, for example azobisisobutyronitrile or azodicarbonamide. The objects produced possess heat- and sound-insulating properties.Type: GrantFiled: September 13, 1982Date of Patent: September 4, 1984Assignee: Compagnie Francaise de RaffinageInventors: Guy Lemoine, Robert Lucas, Michel Vernon
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Patent number: 4465792Abstract: Flexible foam composition comprising a flexible polyester resin prepared from a resin having an elongation of 8 to 70 percent, said foams having density of 2 to 50 pounds per cubic foot. The foam can be filled with up to 150 parts by weight of inorganic materials and can be reinforced with porous fabric (paper or cloth) or glass (chopped fiber or woven tape) materials.Type: GrantFiled: June 24, 1982Date of Patent: August 14, 1984Assignee: Standard Oil Company, a corporation of IndianaInventors: Donald G. Carr, John M. Blonn, Leonard E. Milawski
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Patent number: 4456704Abstract: A method for producing cross-linked polyethylene resin foams which comprises mixing a polyolefin resin, a blowing agent and, optionally, a surface active agent containing hydroxyl groups or an acid amide compound under pressure, said polyolefin resin containing a cross-linkable ethylene polymer having on the side chains thereof silyl groups which effect cross-linking upon contact with water; extruding the mixture into a low pressure zone where the extrudate is allowed to expand; and bringing the expanded extrudate into contact with a silanol condensing catalyst so that the expanded extrudate is cross-linked on contact with water.Type: GrantFiled: October 8, 1982Date of Patent: June 26, 1984Assignee: Sekisui Kaseihin Kogyo Kabushiki KaishaInventors: Mikio Fukumura, Hideo Shibata, Shuhei Doi, Tsutomu Isaka, Takayuki Inoue
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Patent number: 4431575Abstract: Electroconductive olefin polymer foams which are suitable for use as packaging/cushioning materials for sensitive electronic parts are prepared from olefin polymer compositions which comprise a major proportion by weight of an olefin polymer, from 5 to 30 weight percent, based on said olefin polymer, of an electroconductive carbon black and from 0.1 to 10 weight percent, based on said olefin polymer of a saturated fatty acid amide compound.Type: GrantFiled: November 8, 1982Date of Patent: February 14, 1984Assignee: The Dow Chemical CompanyInventors: Akira Fujie, Minoru Hisamatsu
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Patent number: 4430136Abstract: A process for preparing an open-cell structure from a vinyl chloride resin. The process includes mixing a vinyl chloride resin, stabilizer, plasticizer, surface active agent, azodicarbonamide and 4,4'-oxybisbenzenesulfonyl hydrazide to form a vinyl chloride resin paste. The vinyl chloride resin paste of step (a) is rendered alkaline, and mixed to form a uniformly-mixed paste. The paste is permitted to expand, and then heated to cause gelation.Type: GrantFiled: August 23, 1982Date of Patent: February 7, 1984Assignee: Lonseal CorporationInventors: Toshio Tsuchiya, Syuichi Moriizumi, Hisashi Takeda, Akinori Arai
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Patent number: 4412014Abstract: Polyoxyalkylene foam stabilizing surfactants can be prepared by reacting a polyoxyalkylene adduct, a cyclic nitrogenous vinyl monomer and an esterified unsaturated dibasic acid under free radical polymerization conditions in the presence of a free radical initiator, and by subjecting the reaction product obtained to a solvent extraction. The isolated components can be utilized as surfactants in producing cellular foams.Type: GrantFiled: June 29, 1981Date of Patent: October 25, 1983Assignee: The Celotex CorporationInventors: Richard L. Frentzel, Ernest K. Moss
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Patent number: 4405538Abstract: A method of forming synthetic articles of polyester resin by resin transfer molding techniques or the like comprising combining a set of reactants including a major base mass of polyester resin in fluid form, at least one polyester cure accelerator, a selected quantity of isocyanate, a surfactant and at least one promoter. The isocyanate is added in sufficient quantity to react with at least one other component in the mixture to produce quantities of carbon dioxide throughout the mixture. The resultant mixture is transferred into a closed mold prior to substantial reaction. The promoter is allowed to react exothermically with at least one other component of the mixture to trigger the isocyanate to react to evolve carbon dioxide gas to generate pressure to fill the mold. Thereafter a curing reaction between the cure accelerator and the polyester occurs to cure and solidify the expanded resin to produce an expanded article.Type: GrantFiled: August 10, 1981Date of Patent: September 20, 1983Assignee: Whitney & Company, Inc.Inventor: Glen W. Saidla
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Patent number: 4404297Abstract: The present invention relates to intumescent fire retardant compositions for polymers such as olefin polymers, polyester resins, polyurethane resins etc. According to the invention, the intumescent fire retardant compositions contain a thermolized product obtained from a system comprising P.sub.2 O.sub.5 or a P.sub.2 O.sub.5 -precursor together with triethanolamine. The ratio between the constituents is between 0.5 to 2.0 parts by weight P.sub.2 O.sub.5 to 1 part triethanolamine. The intumescent fire retardant compositions according to the present invention obviate the need for using of halogen-containing fire retardants which produce acid vapors during decomposition.Type: GrantFiled: January 7, 1983Date of Patent: September 13, 1983Assignee: Bromine Compounds Ltd.Inventors: Theodor Fishler, Manny Ravey, Leonard M. Shorr
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Patent number: 4395510Abstract: Elevated temperature distortion characteristics of freshly prepared olefin polymer foams are substantially improved by employing in the preparation thereof a small amount (e.g., from about 0.15 to about 10 weight percent based on the olefin polymer) of certain selected N-substituted fatty acid amide compounds of the formula: ##STR1## wherein R.sub.1 represents an alkyl group of from 11 to 17 carbon atoms and R.sub.2 represents an alkyl group of from 12 to 18 carbon atoms.Type: GrantFiled: September 24, 1982Date of Patent: July 26, 1983Assignee: The Dow Chemical Co.Inventor: Chung P. Park
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Patent number: 4394461Abstract: A foamable polyester resin composition is provided and a method for making the same. The composition comprises (a) a liquid unsaturated polyester resin, (b) an azocarboxylate, (c) an organic peroxide or hydroperoxide, (d) a proton donor, (e) a metal promoter, (f) optionally a surfactant, and (g) optionally a filler.Type: GrantFiled: September 30, 1982Date of Patent: July 19, 1983Assignee: Uniroyal, Inc.Inventor: Paul E. Stott
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Patent number: 4391920Abstract: The invention relates to a process producing porous powdery polymer particles. A homogeneous mixture having two components minimum, one a meltable polymer, the other fluid inert to the polymer, both forming a system having a range of complete miscibility and a miscibility gap are introduced to a bed of solid-substance particles, then cooling the mixture to below solidification of the polymer and comminuting the obtained cake-like mass. The polymer is separated then from the inert fluid and solid-like substance particles.Type: GrantFiled: July 15, 1981Date of Patent: July 5, 1983Assignee: Akzo NVInventor: Wolfgang Lange
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Patent number: 4391922Abstract: Mono- and polyazoformamide, sulfonyl hydrazide, sulfonyl semicarbazide and/or dinitrosomethylene amine compounds act as chemical blowing agents and curatives for carbon monoxide-containing ethylene copolymers.Type: GrantFiled: May 6, 1982Date of Patent: July 5, 1983Assignee: E. I. Du Pont de Nemours and CompanyInventor: Jerald R. Harrell
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Patent number: 4386129Abstract: This invention relates to porous films having pores with polygonal cross sections and average pore diameters of about 3 to about 100 microns and the method for preparing these films. More particularly this invention relates to a porous film having pores with polygonal cross sections and average pore diameters of about 3 to about 100 microns formed from a resinous polymer of propylene and the process for forming the film which comprises the steps of (a) forming a film containing beta-spherulites and (b) selectively extracting the beta-spherulites.Type: GrantFiled: March 31, 1981Date of Patent: May 31, 1983Assignee: Standard Oil Company (Indiana)Inventor: Philip Jacoby
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Patent number: 4384048Abstract: The present invention relates to a composition comprising a blowing agent and an activator characterized in that the blowing agent and activator have been micronized together rather than separately as hitherto; to methods for making the composition and to the use of the compositions in expanding polymers.Type: GrantFiled: July 7, 1982Date of Patent: May 17, 1983Assignee: FBC LimitedInventor: Raymond J. Bathgate
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Patent number: 4377644Abstract: This invention relates to solid reaction products of aliphatic, cycloaliphatic or araliphatic mono- and/or polyisocyanates and organic, weakly acid mono- and/or polycarboxylic acids for the production of cellular plastics articles and particularly polyurethane foams. The products of the present invention may also be in the form of mixtures with carboxylic acids. The products are suitable for the production of cellular or porous plastics articles, but are preferably used in the preparation of cellular thermoplastic polyurethanes and semi-rigid and particularly rigid polyurethane integral skin foams having a compact outer skin formed by foaming the reaction mixture in closed molds.Type: GrantFiled: October 16, 1981Date of Patent: March 22, 1983Assignee: Bayer AktiengesellschaftInventors: Richard Kopp, Gerhard Grogler, Max Mann
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Patent number: 4369126Abstract: The present invention relates to a composition comprising a blowing agent and an activator characterised in that the blowing agent and activator have been micronised together rather than separately as hitherto; to methods for making the composition and to the use of the compositions in expanding polymers.Type: GrantFiled: March 20, 1981Date of Patent: January 18, 1983Assignee: FBC LimtedInventor: Raymond J. Bathgate
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Patent number: 4369257Abstract: Substantially closed-cell aliphatic olefin polymer foams having improved dimensional stability are provided by the inclusion therein of from 0.1 to 10 weight percent, based upon the olefin polymer, of certain naphthyl amine compounds.Type: GrantFiled: February 1, 1982Date of Patent: January 18, 1983Assignee: Asahi-Dow LimitedInventors: Tsuneo Hoki, Minoru Hisamatsu
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Patent number: 4368276Abstract: Elevated temperature distortion characteristics of freshly prepared olefin polymer foams are substantially improved by employing in the preparation thereof a small amount (e.g., from about 0.15 to about 10 weight percent based on the olefin polymer) of certain selected N-substituted fatty acid amide compounds of the formula: ##STR1## wherein R.sub.1 represents an alkyl group of from 11 to 17 carbon atoms and R.sub.2 represents an alkyl group of from 12 to 18 carbon atoms.Type: GrantFiled: May 6, 1982Date of Patent: January 11, 1983Assignee: The Dow Chemical CompanyInventor: Chung P. Park