Ingredient Contains A Sulfur Atom Patents (Class 521/89)
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Patent number: 4397948Abstract: Alkali metal borohydride concentrates are prepared by dry blending alkali metal borohydride powder with a dry non-reactive plastic resin, melting and extruding the blended mixture to form an encapsulated alkali metal borohydride concentrate, and then chopping the extrusion into pellets. The pellet concentrate may then be blended into other materials.Type: GrantFiled: July 14, 1982Date of Patent: August 9, 1983Assignee: Thiokol CorporationInventor: Robert C. Wade
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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: 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: 4381066Abstract: This invention concerns sprayable emulsions of a foamable polymer in water which are useful as aerosol caulking or insulating compositions.Type: GrantFiled: May 10, 1982Date of Patent: April 26, 1983Inventors: Edward H. Page, Frank Scotti
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Patent number: 4370286Abstract: Composition of matter adapted to be foamed into essentially a closed cell structure, preponderance of the cells being less than 500 microns in size and containing a chlorofluoroalkane of 1 to 2 carbon atoms, said composition comprising chlorinated polyvinyl chloride resin, and effective amount of a blowing agent, an effective amount of a nucleating agent, and 5 to 20 parts of a processing aid per 100 parts of said resin, said processing aid has a dilute solution viscosity of greater than 2.5 and is selected from copolymers of styrene and acrylonitrile containing 10 to 40% of acrylonitrile.Type: GrantFiled: September 14, 1981Date of Patent: January 25, 1983Assignee: The B. F. Goodrich CompanyInventors: Samuel D. Nehmey, James W. Summers
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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: 4359539Abstract: 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 higher aliphatic hydrocarbyl ether, ester or anhydride compounds.Type: GrantFiled: January 22, 1982Date of Patent: November 16, 1982Assignee: Asahi-Dow LimitedInventors: Tsuneo Hoki, Yutaka Matsuki
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Patent number: 4356274Abstract: Smoke suppressed rigid polyurethane foams are prepared from a reaction mixture comprising as the smoke suppressant additive a metal salt of a: dialkyl dithiocarbamate, a mercaptobenzothiazole, a 2,5-dimercapto-1,3,4-thiadiazole, a mercaptotriazine, a hydroxy thiophenol or an aliphatic dimercapto compound of 2 to 10 carbons.Type: GrantFiled: April 16, 1979Date of Patent: October 26, 1982Assignee: Pennwalt CorporationInventors: Stanley R. Sandler, Jeffrey D. Miano
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Patent number: 4352892Abstract: This application is directed to light-weight and hard foam materials. The foams of this invention are prepared by extruding thermoplastic crystalline plastics in the presence of highly volatile organic liquids as the foaming agents. In accordance with the present method crystalline polyolefins, in the presence of polybutadiene, ethylenevinylacetate copolymers, ethylene-propylenes and/or ethylene-propylene terpolymer rubbers, and optionally radical formers such as suitable peroxides, azidene, sulfonyl azidene or the like, and inhibitors for radical decomposition, such as triallylcyanurate or an acrylate selected from the group consisting of trimethylolpropane-trimethacrylate, allyl-methacrylate, tetrahydrofurfurylmethacrylate, triethyleneglycol-dimethacrylate, polyethyleneglycol-dimethacrylate or the like, are converted into foam-like molded bodies by means of a highly volatile organic liquid foaming agent.Type: GrantFiled: March 10, 1980Date of Patent: October 5, 1982Assignee: Firma Carl FreudenbergInventor: Ernst Lohmar
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Patent number: 4351911Abstract: A foamable thermoplastic injection moldable composition comprising in admixture (a) a polyester resin, (b) a filler selected from the group consisting of fibrous glass or a mineral or mixtures thereof in an amount of from about 5 to about 50 weight percent, and (c) a minor amount of foaming agent.Type: GrantFiled: August 1, 1980Date of Patent: September 28, 1982Assignee: General Electric CompanyInventor: Daniel W. Fox
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Patent number: 4330495Abstract: A novel method of making foamed, crosslinked low density polyethylene utilizing as dual crosslinking/blowing agents, organic peroxides of the formula: ##STR1## where each R is a t-alkyl group bonded through its tertiary carbon atom and having 4-8 carbon atoms; and R' is an alkyl group of 1-6 carbon atoms.Type: GrantFiled: February 23, 1981Date of Patent: May 18, 1982Assignee: U.S. Peroxygen CompanyInventors: Reidar Halle, Roger N. Lewis, John R. Muenchow
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Patent number: 4327193Abstract: 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 higher aliphatic hydrocarbyl ether, ester or anhydride compounds.Type: GrantFiled: March 6, 1981Date of Patent: April 27, 1982Assignee: Asahi-Dow LimitedInventors: Tsuneo Hoki, Yutaka Matsuki
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Patent number: 4310588Abstract: The sliding layer of the element is constituted by a base resin which is self-lubricating or is rendered physically and/or chemically self-lubricating by the addition of a self-lubricating substance, particularly a self-lubricating resin, e.g. a silicone resin, a polyvinylidene fluoride resin, a furan resin. Additional substances are incorporated for rendering the base resin compressible, shock-resistant, electrically antistatic or mechanically reinforced.Type: GrantFiled: March 12, 1980Date of Patent: January 12, 1982Inventor: Jean-Michel Bareel
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Patent number: 4289862Abstract: Liquid, linear, crosslinkable phosphazene compositions and a process for their preparation are disclosed. These liquid compositions, prepared from normally solid polyphosphazene, contain the polyphosphazene in admixture with from about 1 to about 30 parts per hundred parts of polymer of a polythiol, a polyacrylate, a polymethacrylate or mixtures thereof such that the combination has a viscosity of less than 500,000 cps at 23.degree. C. These compositions are easily handled and can be crosslinked at ambient temperatures.Type: GrantFiled: July 14, 1980Date of Patent: September 15, 1981Assignee: Ethyl CorporationInventors: Edwin D. Hornbaker, Hsueh M. Li
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Patent number: 4280004Abstract: A mixture of azodicarbonamide and an .alpha.-amidosulphone corresponding to the general formula: ##STR1## in which R represents hydrogen, a C.sub.1 -C.sub.4 -alkyl residue and/or halogen,x represents numbers from 0 to 5,y represents numbers from 1 to 3, corresponding to the valency of R.sub.1,R.sup.1 represents an aromatic carboxylic acid residue or sulphonic acid residue with 6 carbon atoms, which is optionally substituted once or several times by halogen, C.sub.1 -C.sub.4 alkyl residues, C.sub.1 -C.sub.4 alkoxy residues, nitro and/or cyano, or represents an aliphatic carboxylic acid residue or a sulphonic acid residue with 1-4 carbon atoms, a carbonic acid residue, a thiocarbonic acid residue or a phosphoric acid residue which, corresponding to the numerical value of y, contains 0-2 phenoxy residues or C.sub.1 -C.sub.4 alkoxy residues optionally substituted with C.sub.1 -C.sub.4 alkyl or halogen,R.sup.2 represents R.sup.1, or hydrogen, a C.sub.1 -C.sub.4 alkyl residue, a C.sub.5 -C.sub.Type: GrantFiled: September 22, 1980Date of Patent: July 21, 1981Assignee: Bayer AktiengesellschaftInventors: Werner Jeblick, Ernst Roos, Theo Kempermann, Manfred Abele
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Patent number: 4276247Abstract: Novel processes and compositions are provided for the preparation of foamed, crosslinked polyethylene utilizing cyclic peroxyketal crosslinking/blowing agents. The novel compositions include esters of thiodipropionic acid as activators.Type: GrantFiled: February 19, 1980Date of Patent: June 30, 1981Assignee: Argus Chemical CorporationInventors: John R. Muenchow, Ronald L. Pastorino, Reidar Halle, Roger N. Lewis
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Patent number: 4271271Abstract: Copolymers of monovinyl aromatic monomers and ethylenically unsaturated monocarboxylic acid amide monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.Type: GrantFiled: May 7, 1980Date of Patent: June 2, 1981Assignee: Arco Polymers, Inc.Inventors: Adolph V. DiGiulio, Jack N. Bauer
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Patent number: 4266037Abstract: Copolymers of monovinyl aromatic monomers and imide derivatives of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said composition having fire retardant properties.Type: GrantFiled: May 7, 1980Date of Patent: May 5, 1981Assignee: Arco Polymers, Inc.Inventors: Adolph V. DiGiulio, Jack N. Bauer
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Patent number: 4266038Abstract: Rubber-modified copolymers of monovinyl aromatic monomers and imide derivatives of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.Type: GrantFiled: May 7, 1980Date of Patent: May 5, 1981Assignee: Arco Polymers, Inc.Inventors: Adolph V. DiGiulio, Jack N. Bauer
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Patent number: 4264469Abstract: Thermoplastic resin foams such as polyethylene foams having excellent appearance can be produced with high foaming stability by using a blowing agent composition comprising (a) azodicarbonamide, (b) dinitrosopentamethylenetetramine, and (c) a phenolic or propionate compound such as 1,3,5-tris(3,5-di-t-butyl-4-hydroxybenzyl)-s-triazine-2-4-6-(1H, 3H, 5H)trion.Type: GrantFiled: July 23, 1979Date of Patent: April 28, 1981Assignee: Hitachi Chemical Company, Ltd.Inventors: Yutaka Yamaguchi, Atsuo Sasama
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Patent number: 4263165Abstract: A blowing agent combination comprising azodicarbonamide, zinc oxide and a benzenethiol sulphonic acid derivative having the general formula (I) ##STR1## wherein R is a hydrogen atom, a C.sub.1 -C.sub.4 alkyl radical and/or a chlorine atom,X is a number from 1 to 5, andR' is a C.sub.1 -C.sub.4 alkyl radical, a C.sub.5 -C.sub.6 cycloalkyl radical or a C.sub.7 -C.sub.8 arylalkyl radical each of these radicals being optionally substituted by from 1 to 3 C.sub.1 -C.sub.4 alkyl radicals, from 1 to 5 chlorine atoms and/or a carboxylic acid C.sub.1 -C.sub.4 alkyl ester radical, or a radical having one of the general formulae (11a), (11b), (11c) or (11d). ##STR2## in which y is a number from 0 to 3,R" is a C.sub.1 -C.sub.6 alkylene radical or a xylylene radical which is optionally substituted by from 1 to 4 methyl radicals and/or from 1-4 chlorine atoms and R and X are as defined above;may be used as blowing agents.Type: GrantFiled: May 7, 1980Date of Patent: April 21, 1981Assignee: Bayer AktiengesellschaftInventors: Ernst Roos, Werner Jeblick, Helmut Hurnik
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Patent number: 4252909Abstract: A free expandable rubbery composition comprising an ethylene/.alpha.-olefin copolymer or terpolymer, a blowing agent and a crosslinking agent, said ethylene/.alpha.-olefin co- or terpolymer simultaneously meeting the following requirements (A), (B) and (C):(A) it contains 55 to 73 mole % of an ethylene unit,(B) it has an (EB.times.TS) value of at least 7,000 wherein EB represents the break elongation (%) of the co- or terpolymer and TS is the maximum tensile strength (kg/cm.sup.2) of the co- or terpolymer, and(C) it has a Mooney viscosity, ML.sub.1+4 at 121.degree. C., of 65 to 120.This composition can be used for the production of a crosslinked and foamed rubbery article by the free expansion method.Type: GrantFiled: March 6, 1979Date of Patent: February 24, 1981Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Kiyoshi Honma, Hidekuni Oda
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Patent number: 4251584Abstract: Disclosed is a film or sheet product comprising a closed cell foam comprised of a mixture of low density polyethylene and at least one ethylene polymer containing polar groups, and, optionally, a crystalline olefin polymer in which the mixture contains from about 0.025 to 1 percent by weight of said polar groups. Also disclosed is a method of making this film or sheet product and a wall covering material based thereon.Type: GrantFiled: October 26, 1978Date of Patent: February 17, 1981Assignee: Hoechst AktiengesellschaftInventors: Gerardus van Engelen, Tom van Utteren, Hubertus Vonken
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Patent number: 4231912Abstract: Novel rubber latex compounds comprise an aqueous dispersion of a natural or synthetic rubber latex and as a foaming agent an alkyl alkoxy sulphosuccinamate of the formula: ##STR1## wherein R represents an alkyl group having from 7 to 18 carbon atoms, one of X and Y represents a hydrogen atom and the other represents a SO.sub.3 group, n is an integer having a value of from 0 to 5 and R.sub.1 represents an alkylene group comprising 2 or 3 carbon atoms. These foaming agents combine the virtues of acceptable foaming properties with relatively high solubility in aqueous solution. They can be prepared and transported as aqueous concentrates containing up to 45% of solids material.Those compounds wherein R.sub.1 represents a branched chain alkyl group are believed to be novel and are claimed as such.Type: GrantFiled: March 1, 1979Date of Patent: November 4, 1980Inventors: Henry Cowx, Jean-Luc Urbain
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Patent number: 4214053Abstract: The gel range of acid-acting delayed-action gelling agents, such as sodium silicofluoride, in latex spread foam compounds which are to be gelled by subjecting them to a preliminary heat treatment prior to drying is substantially broadened by including a water-soluble ammonium or amine sulfamate in the compound. At least 0.5 parts by weight of the sulfamate should be used per 100 parts by weight of dry solids in the starting uncompounded latex. It can be added to the latex at any time before or during the compounding step and it is preferably added with 0.5-1 part of a soap per part of sulfamate and also with sufficient ammonium hydroxide or other ammonia donor compound to maintain the pH of the compounded latex composition at 9.5 or higher.Type: GrantFiled: January 29, 1979Date of Patent: July 22, 1980Assignee: Polysar International, S.A.Inventor: David Porter
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Patent number: 4208485Abstract: An expansion agent comprising a foamable mixture of (a) 15-53 weight % of a foaming agent having 6 to 78 carbon atoms selected from the group of an ammonium salt, aliphatic amine salt and/or an alkali metal salt of an alkyl sulfate, hydroxyalkyl sulfate, alkyl ether sulfate and/or aryl alkyl ether sulfate; (b) 5-42 weight % of a dispersant having 22 to 260 carbon atoms selected from the group of an alkyl alkyleneoxy amine and/or its quaternary alkylsulfate, alkylhalide or alkylphosphate derivative; and (c) 5-40 weight % of a stabilizer having 8 to 68 carbon atoms selected from the group of a sodium and/or potassium salt of an alkyl sulfosuccinate; and the combination of said mixture with a synthetic resin, latex or natural rubber to provide a coating or finishing composition; the process of applying said composition to a substrate and the treated substrate product having incorporated the composition of the invention.Type: GrantFiled: March 16, 1979Date of Patent: June 17, 1980Assignee: GAF CorporationInventor: Roop C. Nahta
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Patent number: 4208486Abstract: Organic amides, solutions of polymers thereof, which polymers are subject to hydrolysis and degradation in the presence of amines, and polymers isolated therefrom are stabilized by the presence of aromatic sulfonic acid esters of aliphatic, arylaliphatic and alicyclic alcohols and polyols.Type: GrantFiled: December 8, 1978Date of Patent: June 17, 1980Assignee: Exxon Research & Engineering Co.Inventor: Tad L. Patton
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Patent number: 4190710Abstract: Blowing agents comprising urea dicarboxylic acid anhydride do not give rise to discoloring decomposition residues nor form acid or alkaline by-products. These blowing agents may be used for expanding thermoplastic resins.Type: GrantFiled: March 22, 1978Date of Patent: February 26, 1980Assignee: Bayer AktiengesellschaftInventors: Kurt Ley, Hermann Hagemann, Helmut Hurnik
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Patent number: 4188457Abstract: A bung for closing a wine bottle in the manner of a cork is formed in a conventional injection-moulding machine from ethylene-vinyl acetate copolymer (EVA) with the addition of sodium metabisulphite and sodium bicarbonate. The sodium metabisulphite, which is in stoichiometric excess in relation to the sodium bicarbonate, decomposes to liberate sulphur dioxide. The sodium bicarbonate decomposes to liberate water and carbon dioxide. The bung as moulded accordingly has a foamed core with a liquid-impervious skin. It contains sulphur dioxide, and water enabling the sulphur dioxide to act as an oxygen scavenger when the bung is in use in a wine bottle. The bung therefore provides the bottle with a long shelf life, with no noticeable tainting of the wine.Type: GrantFiled: April 14, 1977Date of Patent: February 12, 1980Assignee: Metal Box LimitedInventor: Arnold M. Throp
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Patent number: 4178419Abstract: Aromatic polyamide foams having a density of 0.025 to 0.7 g./cm..sup.3 are prepared by heating N,N'-dialkyl aromatic polyamides having at least one .beta. hydrogen atom on the alkyl groups, a plasticizer and an aromatic sulfonic acid catalyst at 250.degree. to 340.degree. C. for a length of time sufficient to remove substantially all of the N-alkyl groups.Type: GrantFiled: February 27, 1978Date of Patent: December 11, 1979Assignee: E. I. Du Pont de Nemours and CompanyInventor: Wesley Memeger, Jr.
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Patent number: 4173690Abstract: An electrical insulation foamed plastic is produced using sulfur hexafluoride adsorbed on molecular sieves as the foaming agent and a low shear mixing technique.Type: GrantFiled: December 2, 1977Date of Patent: November 6, 1979Assignee: Gould Inc.Inventors: Bernard G. Giessner, David H. Reighter, Allen E. Stringfellow
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Patent number: 4170697Abstract: Silicon halides will react chemically with polyols to produce polyol silicate resinous products which will react chemically with polyisocyanates to produce polyisocyanate silicate solid or cellular solid products.Type: GrantFiled: June 23, 1978Date of Patent: October 9, 1979Inventor: David H. Blount
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Patent number: 4164611Abstract: Aromatic sulfonic acid hydrazides and semicarbazides having a sterically hindered phenol group are usable as blowing agents in the manufacture of foamed plastics articles. On heating to about 200 to 300.degree. C. they are splitting off nitrogen and the residue remaining in the foam acts as stabilizer against thermo-oxidative degradation of the plastic material.Type: GrantFiled: July 9, 1976Date of Patent: August 14, 1979Assignee: Ciba-Geigy CorporationInventors: Andreas Schmidt, Hugo Illy, Rudolf Kirchmayr, Andre Schmitter
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Patent number: 4157425Abstract: A process is disclosed for the catalytically-induced preparation of phosphazene polymers. Cyclic halophosphazenes are polymerized in the presence of a catalytically sufficient amount of a compound having the formula M(OR').sub.x where M is an alkali metal or alkaline earth metal, x is equal to the valence of the metal and R' is C.sub.1 to C.sub.10 linear or branched alkyl, C.sub.1 to C.sub.10 substituted linear or branched alkyl, the substituent selected from the group consisting of nitro, C.sub.1 to C.sub.10 alkyl, C.sub.1 to C.sub.10 alkoxy, C.sub.6 to C.sub.10 aryl and C.sub.6 to C.sub.10 aryloxy, or N.sub.3 P.sub.3 Cl.sub.z (OR').sub.6-z wherein R' is as defined above and z equals 0 to 5.Type: GrantFiled: April 10, 1978Date of Patent: June 5, 1979Assignee: Armstrong Cork CompanyInventors: Ronald L. Dieck, Alan B. Magnusson
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Patent number: 4142956Abstract: A process for producing an open cell foam by irradiating a composition comprising (a) a thermoplastic resin polymer blend including 1,2-polybutadiene as one component, (b) a photosensitizing agent and (c) a thermally decomposable foaming agent, with ultraviolet light having a wavelength ranging from about 254 to about 400 m.mu. to thereby cross-link mainly the 1,2-polybutadiene, and subsequently foaming the composition at a temperature higher than the softening point of the 1,2-polybutadiene and that of the thermoplastic resin polymer blended therewith and higher than the decomposition temperature of the foaming agent.Type: GrantFiled: June 21, 1977Date of Patent: March 6, 1979Assignee: Takiron Co., Ltd.Inventors: Yasuo Shikinami, Kosuke Iida, Kunihiro Hata, Fumio Kasajima
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Patent number: 4133832Abstract: Hydrocarbylsulfonyl carbohydrazides of the following structural formulae are disclosed for use as blowing agents: ##STR1## The compounds wherein the R groups are alkyl are novel, as are the polymeric products.Type: GrantFiled: May 4, 1978Date of Patent: January 9, 1979Assignee: Uniroyal, Inc.Inventors: Byron A. Hunter, Irwin A. Prager
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Patent number: 4126590Abstract: Sulfonyltetrazoles of formula I, ##STR1## wherein n is 1 or 2, A is alkylene and R is a mono- or divalent hydrocarbon residue, are usable as blowing agents for thermoplastic polymers. These compounds decompose at temperatures above 200.degree. C, therefore they can be used preferably for foaming thermoplasts of higher softening temperature such as aromatic polycarbonates, polyesters or polyethers.Type: GrantFiled: October 28, 1977Date of Patent: November 21, 1978Assignee: Ciba-Geigy CorporationInventor: Hugo Illy
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Patent number: 4116891Abstract: A process is disclosed for the catalytically-induced preparation of phosphazene polymers. Cyclic halophosphazenes are polymerized in the presence of a catalytically sufficient amount of a Lewis acid catalyst.Type: GrantFiled: December 6, 1976Date of Patent: September 26, 1978Assignee: Armstrong Cork CompanyInventors: Ronald L. Dieck, Thomas B. Garrett, Alan B. Magnusson
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Patent number: 4110267Abstract: Expandable ethylenically unsaturated polymer particle compositions containing an expanding agent, said polymer particles having the surfaces thereof coated with a layer of a compound comprising calcium carbonate having a particle size of from 0.02 to 0.2 microns and the surfaces of said calcium carbonate particles having chemically attached thereto organic compounds selected from the group consisting of higher fatty acids, resin acid, lignin sulfonic acid and mixtures thereof.Type: GrantFiled: July 17, 1975Date of Patent: August 29, 1978Assignee: Sekisui Kaseihin Kogyo Kabushiki KaishaInventors: Toshiki Ikeda, Yoshitsugu Beppu
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Patent number: 4104301Abstract: A new synthetic route to sulfonyl semicarbazides (sulfonyldiazanecarboxamides) and sulfonyl-1,2-diazanedicarboxyamide wherein a substituted 1,2-diazenedicarboxamide is reacted with a salt of a sulfinic acid.Type: GrantFiled: February 18, 1977Date of Patent: August 1, 1978Assignee: Armstrong Cork CompanyInventor: John E. Herweh
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Patent number: 4104195Abstract: Blowing agents comprising urea dicarboxylic acid anhydride do not give rise to discoloring decomposition residues nor form acid or alkaline by-products. These blowing agents may be used for expanding thermoplastic resins.Type: GrantFiled: September 25, 1975Date of Patent: August 1, 1978Assignee: Bayer AktiengesellschaftInventors: Kurt Ley, Hermann Hagemann, Helmut Hurnik
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Patent number: 4102808Abstract: A cellular elastomeric product is prepared by the curing of a froth prepared by whipping air into an aqueous dispersion of colloidal elastomer, said aqueous dispersion containing a latex frothing agent consisting of an aqueous solution containing about 70% water and about 25% magnesium di(lauryl sulfate), about 2.5% polyalkoxyglycerol having about eight alkoxy groups per hydroxyl and about 2.5% of a quaternary, dihydroimidazole derivative, there being a fatty acid carbon chain attached as the only carbon-carbon linkage for the carbon between the two nitrogens of the imidazole ring, the quaternary nitrogen partaking of the nature of a quaternary sodium glycinate having at such quaternary nitrogen both an alkhydroxy group and said dihydroimidazole ring.Type: GrantFiled: June 1, 1977Date of Patent: July 25, 1978Assignee: Arco Polymers, Inc.Inventor: Daniel Charles Straka
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Patent number: 4101464Abstract: Cellular polymeric solids are made by mixing an acidulous or acidic polymerizable medium that is polymerizable and/or cross-linkable by a free radical mechanism (e.g. an unsaturated polyester) with an effective amount of two or more acid sensitive mono- or poly-azo compounds containing the group: ##STR1## wherein Y is an acid sensitive group (e.g.Type: GrantFiled: September 16, 1976Date of Patent: July 18, 1978Assignee: Pennwalt CorporationInventors: Ernest Rudolph Kamens, Donald Milton Kressin, Harold Carl Lange, Ronald Edward MacLeay