Metal Atom Is Part Of An Organic Compound Patents (Class 521/93)
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Patent number: 5098782Abstract: Disclosed is an extruded, low density, non-outgassing ehtylenic polymer foam containing 30-85% open cells and the remainder closed cells and having an essentially integral surface. The foam posseses superior compression recovery and lower compression resistance when compared with similarly comprised ehtylenic closed cell foams and superior moisture resistance and handling characteristics when compared to open cell foams.Type: GrantFiled: September 16, 1991Date of Patent: March 24, 1992Assignee: Applied Extrusion Technologies, Inc.Inventors: Edward E. Hovis, Eric D. Johnson, Michael J. Schroeder
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Patent number: 5077317Abstract: An EVA closed cell foam is composed of 100 parts of EVA, 1 to 5 parts of azodicarbonamide, 3 to 10 parts of zinc oxide, 1 to 5 parts of zinc stearate, 1 to 3 parts of stearic acid, and 15 to 25 parts of electrically conductive carbon black. The composition is stirred in a stirring machine. The stirred composition is mixed in a mixing machine. The mixed composition is rolled out with a calender roller and sliced to a plurality of sheets. The sheets are cured with a curing machine.Type: GrantFiled: March 8, 1991Date of Patent: December 31, 1991Inventor: Horng Yi-Shyu
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Patent number: 5059631Abstract: Disclosed is an extruded, low density, non-outgassing ethylenic polymer foam containing 30-85% open cells and the remainder closed cells and having an essentially integral surface. The foam possesses superior compression recovery and lower compression resistance when compared with similarly comprised ethylenic closed cell foams and superior moisture resistance and handling characteristics when compared to open cell foams.Type: GrantFiled: May 22, 1990Date of Patent: October 22, 1991Assignee: Applied Extrusion Technologies, Inc.Inventors: Edward E. Hovis, Eric D. Johnson, Michael J. Schroeder
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Patent number: 5055495Abstract: An improvement in the method for the foaming of polyvinylchloride resins by the use of a blowing agent and an activator therefor which uses as the activator a mixture of at least one organotin mercapto acid ester and a diorganotin oxide complex with an ester of an oxygen-containing acid.Type: GrantFiled: August 8, 1990Date of Patent: October 8, 1991Assignee: Witco CorporationInventors: Michael R. Croce, Stuart D. Brilliant
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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: 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: 5032621Abstract: This invention relates to the use of a special class of sulfonic and phosphonic acids, and salts of the acids, to give improved nucleation for foam extrusion of thermoplastics using either dissolved gas or chemical blowing agents to produce foam.Type: GrantFiled: October 30, 1989Date of Patent: July 16, 1991Assignee: E. I. du Pont de Nemours and CompanyInventors: Marlin D. Buckmaster, Stuart K. Randa
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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: 5023279Abstract: This invention relates to the use of a special class of sulfonic and phosphonic acids, and salts of the acids, to give improved nucleation for foam extrusion of thermoplastics using either dissolved gas or chemical blowing agents to produce foam.Type: GrantFiled: October 30, 1989Date of Patent: June 11, 1991Assignee: E. I. du Pont de Nemours and CompanyInventors: Marlin D. Buckmaster, Stuart K. Randa
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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: 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: 4977193Abstract: An improvement in the method for the foaming of polyvinylchloride resins by the use of a blowing agent and an activator therefor which uses as the activator a mixture of at least one organotin mercapto acid ester and a diorganotin oxide complex with an ester of an oxygen-containing acid.Type: GrantFiled: May 4, 1990Date of Patent: December 11, 1990Assignee: Witco CorporationInventors: Michael R. Croce, Stuart D. Brilliant
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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: 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: 4918111Abstract: An expandable composition for non-crosslinked foam comprising:(a) 80 to 99% by weight of a 1-butene copolymer,(b) 20 to 1% by weight of an ethylene polymer, and(c) a blowing agent,the percentages being based on the total weight of the 1-butene copolymer and the ethylene polymer.Type: GrantFiled: August 15, 1988Date of Patent: April 17, 1990Assignee: Shell Oil CompanyInventors: Haruhiko Tanaka, Fukashi Kagawa, Kouji Nakashima
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Patent number: 4879138Abstract: A moldable and foamable thermoplastic composition comprising a major portion of moldable polypropylene resin; from about 1.25 to about 6 parts per hundred of resin (pphr) foam concentrate; from about 0.15 to about 1 pphr calcium carbonate; from about 0.03 to about 0.15 pphr amorphous silicon dioxide; from about 0.1 to about 0.4 pphr lubricant selected from the group consisting of synthetic waxes and distilled monoglycerides; from about 0.1 to about 0.4 pphr lubricant selected from the group consisting of N,N'-dioleoylethylenediamine and calcium stearoyl-2-lactylate; from about 0.15 to about 0.3 pphr unsaturated fatty monoamide; and from about 0.5 to about 2 pphr titanium dioxide concentrate.Type: GrantFiled: May 8, 1989Date of Patent: November 7, 1989Assignee: Permian Research CorporationInventors: Marion Johnson, Granville J. Hahn, Ramiro V. Ramoos
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Patent number: 4870113Abstract: Low density rigid foamed polyphosphazene articles having excellent physical and flammability properties are made by masticating a mixture of high molecular weight linear polyphosphazene, a curing agent (e.g., sulfur), an accelerator, a blowing agent and optionally fillers, processing aids and the like to form a substantially homogeneous blend and then stopping the masticating, heating to pre-cure and then heating to activate the blowing agent and complete the cure thereby forming a flexible foamed polyphosphazene composite, forming the flexible foamed polyphosphazene composition into a shaped composition, and thereafter heating the flexible foamed shaped polyphosphazene composition at a temperature and for a length of time which causes the flexible foamed polyphosphazene composition to become a rigid foamed polyphosphazene composition of the same shape as the flexible foamed polyphosphazene composition.Type: GrantFiled: December 23, 1988Date of Patent: September 26, 1989Assignee: Ethyl CorporationInventors: Warren B. Mueller, Susan D. Landry
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Patent number: 4866100Abstract: A moldable and foamable thermoplastic composition comprising a major portion of moldable polypropylene resin; from about 1.25 to about 6 parts per hundred of resin (pphr) foam concentrate; from about 0.15 to about 1 pphr calcium carbonate; from about 0.03 to about 0.15 pphr amorphous silicon dioxide; from about 0.1 to about 0.4 pphr lubricant selected from the group consisting of synthetic waxes and distilled monoglycerides; from about 0.1 to about 0.4 pphr lubricant selected from the group consisting of N,N'-dioleoylethylenediamine and calcium stearoyl-2-lactylate; from about 0.15 to about 0.3 pphr unsaturated fatty monoamide; and from about 0.5 to about 2 pphr titanium dioxide concentrate.Type: GrantFiled: May 17, 1988Date of Patent: September 12, 1989Assignee: Permian Research CorporationInventors: Marion Johnson, Granville J. Hahn, Ramiro V. Ramos
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Patent number: 4800214Abstract: An open cell body is made of hard vinyl chloride resin made by extruding a compound composition consisting essentially of a vinyl chloride resin made by a suspension polymerization method or a block polymerization method, an ultramacromolecular weight acrylic processing aid, joint use of an organic stabilizer containing a metal of the group I in the periodic table and an organic stabilizer containing a metal of the group II in the periodic table, or an organic composite stabilizer containing the both metals, joint use of an anionic surface active agent and a nonionic surface active agent, or joint use of an anionic surface active agent and a low polymerization degree polyolefin or waxes, a thermal decomposing organic blowing agent such as azodicarbonamide, and, as occasion demands, a powderly filler such as calcium carbonate.Type: GrantFiled: October 13, 1987Date of Patent: January 24, 1989Assignee: Lonseal CorporationInventors: Tatsuo Waki, Takeshi Watanabe, Kazuo Suzuki
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Patent number: 4797426Abstract: A hard polyvinyl chloride resin composition is provided, which contains as essential components thereof the following components (a)-(e):(a) a polyvinyl chloride base resin produced by suspension polymerization and/or bulk polymerization;(b) a super high molecular acrylic resin base processing aid;(c) a stabilizer containing one or more Group-II and/or Group-IV metals;(d) a surfactant; and(e) a heat-decomposable organic foaming agent. The above composition is formed by extrusion into a hard polyvinyl chloride resin open-cell foam.Type: GrantFiled: November 18, 1987Date of Patent: January 10, 1989Assignee: Lonseal CorporationInventors: Tatsuo Waki, Takeshi Watanabe, Kazuo Suzuki
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Patent number: 4786655Abstract: Polyurethanes containing uretdione rings are produced by reacting a polyisocyanate containing a uretdione ring with a relatively high molecular weight dihydroxyl compound in the presence of a bismuth salt of an organic carboxylic acid and a low molecular weight aromatic diamine. The low molecular weight aromatic diamine is used in a quantity which is 5 to 10 times the quantity of bismuth salt used. These solid polyurethanes are formed in relatively short reaction times and possess outstanding mechanical properties.Type: GrantFiled: November 13, 1987Date of Patent: November 22, 1988Assignee: Bayer AktiengesellschaftInventors: Gerhard Grogler, Heinrich Hess, Richard Kopp
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Patent number: 4777188Abstract: Foamed elastomeric compositions are produced by a process comprising the steps of (A) forming a blend comprised of (1) a foamable, curable elastomer; (2) a curative; and (3) a blowing agent composition consisting essentially of (i) azodicarbonamide and (ii) at least one member selected from the group consisting of zinc salt of C.sub.1 -C.sub.6 organic acids and C.sub.1 -C.sub.6 carboxamides; and (B) heating such blend to between about 130.degree. C. and about 170.degree. C. for a period of time sufficient to foam and cure such blend.Type: GrantFiled: December 31, 1986Date of Patent: October 11, 1988Assignee: Uniroyal Chemical Company, Inc.Inventors: Byron A. Hunter, Lee D. Hansen, Donald G. Rowland
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Patent number: 4762860Abstract: An expandable ethylenic or styrenic polymer composition for production of lightly crosslinked foamed polymers and a process for controlling the degree of crosslinking of the polymer prior to extrusion foaming. The control is obtained by use of (a) a reversible gas-yielding crosslinking reaction which is delayed in the foam extrusion line in the presence of gaseous products (alcohols) and (b) added amounts of an alcohol such as an aliphatic alcohol. Suitable crosslinking agents include silanes, azido functional silanes, titanates, and amino compounds.Type: GrantFiled: May 15, 1986Date of Patent: August 9, 1988Assignee: The Dow Chemical CompanyInventor: Chung P. Park
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Patent number: 4734440Abstract: A foamable composition comprising a polymer selected from the group consisting of a hydrolyzable ethylene/silane copolymer and a hydrolyzable ethylene/ethyl acrylate/silane terpolymer and the following components in about the following amounts per 100 parts by weight of polymer:______________________________________ Component Parts by Weight ______________________________________ azodicarbonamide 1 to 25 p,p'oxybis-benzene 0.5 to 3.5 sulfonyl hydrazide silanol condensation catalyst 0.02 to 0.Type: GrantFiled: December 18, 1986Date of Patent: March 29, 1988Assignee: Union Carbide CorporationInventor: Barry Topcik
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Patent number: 4714568Abstract: The invention relates to a new blowing agent combination based on azodicarbonamide, production thereof and use thereof for foaming polymers.Type: GrantFiled: October 23, 1984Date of Patent: December 22, 1987Assignee: Bayer AktiengesellschaftInventors: Helmut Hurnik, Manfred Finzenhagen, Werner Jeblick
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Patent number: 4708969Abstract: A composition and method for polymerization of cycloolefins using a feed stream including an iodide containing activator to form a substantially cross-linked polymeric product. The polymeric product may be formed by polymerization in an intricately shaped mold and/or be of ultra-low density. High glass transition temperature and fiber reinforced products are formed.Type: GrantFiled: June 13, 1986Date of Patent: November 24, 1987Assignee: Hercules IncorporatedInventor: Douglas R. Leach
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Patent number: 4698368Abstract: Mixture consisting of an organo-tin alcoholate of the formula (I) ##STR1## and of an organo-tin mercaptide of the formula (II) or (III) ##STR2## which mixture may additionally contain an organo tin carboxylate of the formula (IV) or (V) ##STR3## in which formulae R.sup.1 is C.sub.1 -C.sub.12 alkyl, R.sup.2 is C.sub.10 -C.sub.30 alkyl, phenyl which is substituted by one or two C.sub.8 -C.sub.12 alkyl groups, R.sup.3 has the meaning assigned to R.sup.2 or is the --Sn(OR.sup.2)(R.sup.1).sub.2 group, wherein R.sup.1 and R.sup.2 are as defined above, X is sulfur or oxygen, R.sup.4 is the --S--CH.sub.2 CH.sub.2 --COOR.sup.5 or --X--Sn(R.sup.1).sub.n (S--CH.sub.2 CH.sub.2 --COOR.sup.5).sub.3-n group, in which R.sup.1 and X are as defined above, R.sup.5 is C.sub.8 -C.sub.14 alkyl, n is 1 or 2, and R.sup.6 is c.sub.10 -C.sub.30 alkyl, the weight ratio of I:II or I:III being in the range from 9:1 to 1:9. These mixtures are stabilizers for chlorinated polymers and also activators for the manufacture of foamed plastics.Type: GrantFiled: January 30, 1984Date of Patent: October 6, 1987Assignee: Ciba-Geigy CorporationInventor: Horst Muller
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Patent number: 4694025Abstract: An expandable ethylenic or styrenic polymer composition for production of lightly crosslinked foamed polymers and a process for controlling the degree of crosslinking of the polymer prior to extrusion foaming. The control is obtained by use of (a) a reversible gas-yielding crosslinking reaction which is delayed in the foam extrusion line in the presence of gaseous products (alcohols) and (b) added amounts of an alcohol such as an aliphatic alcohol. Suitable crosslinking agents include silanes, azido functional silanes, titanates, and amino compounds.Type: GrantFiled: November 16, 1984Date of Patent: September 15, 1987Assignee: The Dow Chemical CompanyInventor: Chung P. Park
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Patent number: 4692473Abstract: A foam polyvinyl product prepared from a composition comprising a vinyl polymer and an alkali carbonate foaming agent.Type: GrantFiled: April 26, 1985Date of Patent: September 8, 1987Assignee: Orin Chemical CompanyInventors: Thomas C. Wright, Grover L. Johnson
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Patent number: 4692475Abstract: 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: December 10, 1986Date of Patent: September 8, 1987Assignee: Uniroyal Chemical Company, Inc.Inventors: Donald G. Rowland, Byron A. Hunter, Lee D. Hansen
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Patent number: 4690953Abstract: A method of mechanically frothing and casting an aqueous ionic polyurethane dispersion to yield a mechanically frothed polyurethane foam. The method comprises admixing an aqueous ionic polyurethane dispersion with a stearate stabilizer and an optional aziridine crosslinking agent, and frothing the low viscosity admixture. The polyurethane dispersion contains particles having an average size of less than one micron, and contains between 35 and 70 percent by weight dispersed polyurethane solids. Preferably, each polyurethane particle in the aqueous dispersion is crosslinked. Before frothing, the low viscosity admixture contains between 33 and 87 percent by weight of the polyurethane dispersion, up to 33 percent by weight of an azirdine composition and between 13 and 50 percent by weight of a 33 percent aqueous dispersion of a stearate salt and has, as a result, a viscosity in the range of 100 to 200 centipoise. After frothing, the frothed admixture is knife-coated and cured into a flexible foam sheet.Type: GrantFiled: March 11, 1986Date of Patent: September 1, 1987Assignee: Seton CompanyInventors: Robert B. Orr, Leon Chicosky, Jr.
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Patent number: 4686239Abstract: A composition comprising a dry blend mixture of a porous thermoplastic resin powder and from 1 to 80 wt. % of a microbiocide based upon the weight of the composition. The microbiocide is present in the mixture at a concentration of at least about 20 times greater than the normal upper usage concentration of the microbiocide, and is held within the pores of the thermoplastic powder.The resulting concentrate is a substantially non-dusting, free-flowing powder which is readily incorporated into a second thermoplastic resin to produce a resulting article having the appropriate level of microbiocide.Type: GrantFiled: December 4, 1986Date of Patent: August 11, 1987Assignee: Morton Thiokol, Inc.Inventor: Nuno M. Rei
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Patent number: 4663359Abstract: A composition comprising a dry blend mixture of a porous thermoplastic resin powder and from 1 to 80 wt. % of a microbiocide based upon the weight of the composition. The microbiocide is present in the mixture at a concentration of at least about 20 times greater than the normal upper usage concentration of the microbiocide, and is held within the pores of the thermoplastic powder.The resulting concentrate is a substantially non-dusting, free-flowing powder which is readily incorporated into a second thermoplastic resin to produce a resulting article having the appropriate level of microbiocide.Type: GrantFiled: April 17, 1986Date of Patent: May 5, 1987Assignee: Morton Thiokol, Inc.Inventor: Nuno M. Rei
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Patent number: 4661528Abstract: A composition comprising a dry blend mixture of a porous thermoplastic resin powder and from 1 to 80 wt. % of a microbiocide based upon the weight of the composition. The microbiocide is present in the mixture at a concentration of at least about 20 times greater than the normal upper usage concentration of the microbiocide, and is held within the pores of the thermoplastic powder.The resulting concentrate is a substantially non-dusting, free-flowing powder which is readily incorporated into a second thermoplastic resin to produce a resulting article having the appropriate level of microbiocide.Type: GrantFiled: October 16, 1986Date of Patent: April 28, 1987Assignee: Morton Thiokol, Inc.Inventor: Nuno M. Rei
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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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Resin composition for closed-cell foam and cured resin foam prepared by using said resin composition
Patent number: 4613628Abstract: Disclosed is a composition for formation of a cured resin foam, which comprises (A) a curable resin composition comprising an unsaturated polyester prepolymer and an ethylenically unsaturated monomer, (B) an inorganic powder composed of a carbonate and/or bicarbonate, (C) an aqueous solution of a water-soluble inorganic compound containing a neutralizable acid radical and being capable of forming a colloidal oxide or hydroxide and being gelled by neutralization or an acidic aqueous sol of an inorganic oxide or hydroxide containing a neutralizable acid radical and being capable of being gelled by neutralization, and (D) a substantially water-insoluble surface active agent having a W/O type emulsion-forming capacity, wherein an emulsion structure having a continuous phase of the component (A) and a dispersed particle phase of the component (C) is formed.Type: GrantFiled: November 5, 1984Date of Patent: September 23, 1986Assignee: Ferro Enamels (Japan) LimitedInventors: Yutaka Hoshino, Koji Kataoka, Yasumasa Asanaka -
Patent number: 4611012Abstract: Mixture consisting of an organo-tin alcoholate of the formula (I) ##STR1## and of an organo-tin mercaptide of the formula (II) or (III) ##STR2## which mixture additionally contains an organo-tin carboxylate of the formula (IV) or (V) ##STR3## in which formulae R.sup.1 is C.sub.1 -C.sub.12 alkyl, R.sup.2 is C.sub.10 -C.sub.30 alkyl, phenyl which is substituted by one or two C.sub.8 -C.sub.12 alkyl groups, R.sup.3 has the meaning assigned to R.sup.2 or is the --Sn(OR.sup.2)(R.sup.1).sub.2 group, wherein R.sup.1 and R.sup.2 are as defined above, X is sulfur or oxygen, R.sup.4 is the --S--CH.sub.2 CH.sub.2 --COOR.sup.5 or --X--Sn(R.sup.1).sub.n (S--CH.sub.2 CH.sub.2 --COOR.sup.5).sub.3-n group, in which R.sup.1 and X are as defined above, R.sup.5 is C.sub.8 -C.sub.14 alkyl, n is 1 or 2, and R.sup.6 is C.sub.10 -C.sub.30 alkyl, the weight ratio of I:II or I:III being in the range from 9:1 to 1:9. These mixtures are stabilizers for chlorinated polymers and also activators for the manufacture of foamed plastics.Type: GrantFiled: April 18, 1985Date of Patent: September 9, 1986Assignee: Ciba-Geigy CorporationInventor: Horst Muller
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Patent number: 4598102Abstract: A composition and method for polymerization of cycloolefins using a feed stream including dialkylaluminum iodide and the cross-linked polymer produced. The polymer product may be formed by polymerization in an intricately shaped mold and/or be of ultra-low density. A trialkylaluminum compound or a dialkylaluminum chloride are preferably included with dialkylaluminum iodide.Type: GrantFiled: November 16, 1984Date of Patent: July 1, 1986Assignee: Hercules IncorporatedInventor: Douglas R. Leach
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Patent number: 4596832Abstract: In producing a foam by foaming a melt-plasticized styrene/maleic anhydride copolymer resin, a process for producing a highly foamed styrene/maleic anhydride copolymer resin foam characterized by using as the blowing agent at least one compound selected from the group consisting of a carboxylate of a metal of group Ia of the periodic table of elements, a carbonate of a metal of group Ia, a carboxylate of a metal of group IIa and a carbonate of a metal of group IIa; or by first blending with said copolymer resin at least one compound selected from the group consisting of a carboxylate of a metal of group Ia of the periodic table of elements, a carbonate of a metal of group Ia, a carboxylate of a metal of group IIa and a carbonate of a metal of group IIa, then melt-blending the mixture, followed by extruding and granulating the blend to form a pre-expanded granular product, and thereafter foaming the granular product thus obtained.Type: GrantFiled: April 19, 1985Date of Patent: June 24, 1986Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Nagao Ariga, Kyotaro Shimazu, Hiroyuki Sato
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Patent number: 4591606Abstract: The present invention concerns a foamed, silane-cross-linked polyolefin foam and a procedure for producing the same. The polyolefin foam contains 60-99.9% polyolefin, 0.1-10% chemically bound hydrolyzed silane, 0-5% condensing catalyst, 0.1-5% water and 0-20% water carrier substance. The polyolefin foam is produced by extruding a mixture which contans polyethylene, silane hydrolyzable with water, a condensing catalyst and a foaming agent. For the polyolefin to be extruded is used polyethylene containing 0.1-5% water as foaming agent and 0-20% water carrier substance.Type: GrantFiled: May 22, 1985Date of Patent: May 27, 1986Assignee: Neste OyInventor: Christer Bergstrom
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Patent number: 4555529Abstract: Polyorganosiloxane foams are prepared by the volatilization of a blowing agent within a polyorganosiloxane composition that is curable by a hydrosilation reaction and includes as a foam stabilizer a resinous polyorganosiloxane comprising trimethylsiloxy units, SiO.sub.4/2 units and a specified class of fluorine-containing siloxane units.Type: GrantFiled: June 21, 1985Date of Patent: November 26, 1985Assignee: Dow Corning CorporationInventors: Chi-Long Lee, Myron T. Maxson, James A. Rabe
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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: 4550125Abstract: Polyorganosiloxane foams are prepared by the volatilization of a blowing agent within a polyorganosiloxane composition that is curable by a hydrosilation reaction and includes as a foam stabilizer a resinous polyorganosiloxane comprising trimethylsiloxy units, SiO.sub.4/2 units and a specified class of fluorine-containing siloxane units.Type: GrantFiled: March 25, 1985Date of Patent: October 29, 1985Assignee: Dow Corning CorporationInventors: Chi-Long Lee, Myron T. Maxson, James A. Rabe
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Patent number: 4547529Abstract: Polyorganosiloxane foams are obtained by blending, dispensing and curing two-part polyorganosiloxane compositions comprising a liquid hydroxyl endblocked polydimethylsiloxane, a liquid alkyl orthosilicate as the curing agent, a catalytically effective amount of a tin compound, a blowing agent and, as a foam stablilizer, a resinous organosiloxane copolymer comprising trimethylsiloxy units, SiO.sub.4/2 units and a specified class of fluorine-containing organosiloxane units.Type: GrantFiled: March 25, 1985Date of Patent: October 15, 1985Assignee: Dow Corning CorporationInventors: Chi-Long Lee, James A. Rabe
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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: 4536520Abstract: Foamed polyphosphazene articles having consistent appearance and physical properties are made by masticating a mixture of high molecular weight linear polyphosphazene, a curing agent (e.g., sulfur), an accelerator, a blowing agent and optionally fillers, processing aids and the like until the temperature of the composition rises to a pre-determined level. Mixing is stopped and the composition is shaped, heated to pre-cure and then heated to activate the blowing agent and complete the cure.Type: GrantFiled: June 11, 1984Date of Patent: August 20, 1985Assignee: Ethyl CorporationInventor: Warren B. Mueller
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Patent number: 4535095Abstract: Process for compounding polyphosphazene gum by (a) mixing a composition comprising a curable polyphosphazene gum, filler, plasticizer and other conventional components but without any curing agent to form a non-curing masterbatch, (b) mixing a composition comprising a polyphosphazene gum and an excess amount of curing agent, at least 10 times that required to cure the phosphazene gum in this mixture and optionally containing other conventional components to form a concentrate and (c) blending the non-curing masterbatch from (a) with sufficient concentrate from (b) to provide an amount of curing agent sufficient to cure the entire resultant mixture.Type: GrantFiled: December 10, 1984Date of Patent: August 13, 1985Assignee: Ethyl CorporationInventor: Warren B. Mueller
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Patent number: 4530940Abstract: Stabilized melamine resin foams contain, as a stabilizer, a copper or iron compound in an amount corresponding to from 10 ppm to 3%, based on the weight of the melamine resin, of Cu or Fe, preferably an oxide, hydroxide or carbonate of copper.Type: GrantFiled: June 28, 1984Date of Patent: July 23, 1985Assignee: BASF AktiengesellschaftInventors: Frank P. Woerner, Horst Reimann, Harald Mahnke, Peter Neumann, Gerhard Turznik, Hanshelmut Kaeppel
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Patent number: 4517316Abstract: A mixture of crumb rubber, binder, such as polyethylene, and slip contact agent, such as talc, and lubricant, such as a metal stearate, is formed in a blender (10), is shaped into pellets (32) by extruding a strand of the mixture (26) into water (28) and breaking the strand into pellets. The pellets (32) are adjusted to a preselected water content in drier (46) before storage in closed bags (50), stored and reinforced in a container (54).The controlled water content pellets (32) are formed into porous pipe (88) by extrusion in pipe extruder (62) having the feeding, transition and metering zones separately heated to temperatures from 320.degree. F. to 400.degree. F. (T.sub.1, T.sub.2, T.sub.3). The die has a separate jacket (90) receiving heat exchange fluid for heating the die (68) to a temperature from 290.degree. F. to 380.degree. F. to form a porous pipe (88) having more uniform porosity. Porosity is controlled by selecting water content of the pellets and controlling die temperature.Type: GrantFiled: January 24, 1984Date of Patent: May 14, 1985Assignee: Dasurat Enterprises PTE Ltd.Inventor: James W. Mason
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Patent number: 4506037Abstract: A process for producing a resin foam by using an aqueous medium, which comprises(a) treating a resin compound with said aqueous medium to cause the aqueous medium to adhere to and be held by the resin compound, said resin compound being composed of porous agglomerated particles resulting from partial melt-adhesion of thermoplastic resin particles coated with a fine hydrophilic solid powder which does not substantially melt at the melting temperature of the resin particles, said solid powder being embedded in the resin particles but partly exposed at their surfaces,(b) melt-kneading the resin compound treated with the aqueous medium under such an elevated pressure that evaporation of the aqueous medium is substantially inhibited, and(c) thereafter releasing the kneaded resin composition from the pressurized state to foam it; and a thermoplastic resin compound used for the aforesaid process.Type: GrantFiled: March 15, 1984Date of Patent: March 19, 1985Assignee: Chuo Kagaku Co., Ltd.Inventors: Shigemasa Suzuki, Toshiyuki Takai