Aluminum Atom Dnrm Patents (Class 524/444)
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Patent number: 5969028Abstract: This invention relates to the protection of polyurethane compositions and especially of elastic polyurethane fibers produced therefrom against destruction or degradation by dry cleaning agents based on halogenated or non-halogenated hydrocarbons, in particular on tetrachloroethylene (perchlor), as are used for dry cleaning textiles. This invention in particular relates to the use of hydrotalcites and/or other metal aluminium hydroxy compounds which are coated with anionic surfactants, fatty acids, silanes, polyorganosiloxanes, polyorganohydrogensiloxanes or higher fatty acid esters or are uncoated as additives to polyurethane compositions and especially polyurethane fibers produced therefrom to provide protection against degradation or destruction by the hydrocarbons.Type: GrantFiled: November 13, 1997Date of Patent: October 19, 1999Assignee: Bayer AktiengesellschaftInventor: Stephan Hutte
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Patent number: 5962569Abstract: A non-tacky electrical stress control material comprisinga) about 100 parts of a resin component containing1) from about 20% to about 80% of an epihalohydrin polymer, and2) correspondingly, from about 80% to about 20% of an insulating silicone polymer having a tan .delta. of less than one,b) from about 10 to about 200 parts of a filler, said filler being nonconductive at room temperature, selected from the group consisting of barium titanate and hydrated aluminum silicate, andc) from 0 to 30 parts of a plasticizer.Type: GrantFiled: June 23, 1998Date of Patent: October 5, 1999Assignee: 3M Innovative Properties CompanyInventors: Thomas J. D. Heyer, Robert A. Wandmacher
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Patent number: 5948845Abstract: An organic solvent-based paint is provided which has, among other things, a perlitic component. The paint resists thermal loading and loss. A series addition of components provides the paint efficiently. The paint is useful for many substrates, including metals.Type: GrantFiled: February 2, 1998Date of Patent: September 7, 1999Assignee: P.S.A.M.S., Inc.Inventors: John W. Good, Rufus H. Kerry
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Patent number: 5939487Abstract: A room temperature curable organopolysiloxane composition including:(A) a diorganopolysiloxane terminated with a hydroxyl group at the both terminal ends and having a viscosity at 25.degree. C. of 25 to 1,000,000 cSt,(B) an organosilane having 3 or more hydrolyzable groups per molecule, a partially hydrolyzed and condensed product thereof or a mixture thereof, said hydrolyzable group is a ketoxime group or an alkenyloxy groups, anda thin leaf-like inorganic filler. This can give cured products with good oil resistance, and suitable as FIPG materials for automobiles.Type: GrantFiled: June 30, 1997Date of Patent: August 17, 1999Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tsuneo Kimura, Kazuyuki Suzuki, Mamoru Teshigawara
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Patent number: 5936022Abstract: A high performance protecting surface coating, and methods, is disclosed. The coating comprises a resin such as epoxy loaded with inert particles, preferably ceramic, a curing agent for hardening, and a selected additive such as a solvent. The protective coating of the present invention has adhesion strength of at least 2,000 psi and impact resistance of at least 90 inch-lbs.Type: GrantFiled: August 29, 1997Date of Patent: August 10, 1999Assignee: Freecom, Inc.Inventor: John E. Freeman
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Patent number: 5929147Abstract: An embrittlement-resistant polyolefin composition, including: (a) at least 80% by weight, based on the total weight of the polyolefin composition, of a crystalline polymer comprising either a propylene homopolymer having an isotactic index greater than 90 or a random copolymer of propylene and either ethylene or C.sub.4 -C.sub.10 1-olefins, (b) an elastomeric copolymer of ethylene and either propylene or butene-1, where the elastomeric copolymer is present in an amount sufficient to enhance the flexibility of the polyolefin composition, without adversely affecting the clarity of the polyolefin composition, and where the polyolefin composition has a heat distortion temperature of at least 60.degree. C. Optional components include a stabilizing amount of a hindered amine light stabilizer, an acid neutralizing agent, and a sorbitol-based compound. The composition may be used to manufacture medical articles and food packaging material which must be sterilized, either by irradiation or by autoclaving.Type: GrantFiled: June 18, 1996Date of Patent: July 27, 1999Assignee: Montell North America Inc.Inventors: David E. Pierick, Thomas J. O'Neal
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Patent number: 5925308Abstract: A method of producing a formable mixture involves combining a powder material, and a plurality of gel-forming polymers, wherein at least one gel-forming polymer is a proton donor, and at least one gel forming polymer is a proton acceptor. A method of making a monolithic structure involves producing a formable mixture of powder material which can be ceramic, metal, glass, glass ceramic, molecular sieve and combinations thereof, a plurality of gel-forming polymers as described above, extruding the mixture to form a green monolithic structure, and drying and firing the green structure.Type: GrantFiled: July 28, 1997Date of Patent: July 20, 1999Assignee: Corning IncorporatedInventors: Edward J. Fewkes, Frances M. Smith, Lung-Ming Wu
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Patent number: 5908890Abstract: The invention relates to the production and use of an agent for use in polymers as an antiblock agent. Pumice with very low amounts of crystalline silica is processed from pumice stone to produce a fine ground pumice with a narrow particle size range. When incorporated into a polyolefin film, the fine ground pumice acts as an antiblock agent while not significantly contributing to haze.Type: GrantFiled: August 8, 1997Date of Patent: June 1, 1999Assignee: CR Minerals CorporationInventor: Arlen C. Cornett
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Patent number: 5905104Abstract: The invention provides a protective coating composition for use on substrates including steel, aluminum, iron and the like. This composition further provides abrasion resistance, electrical resistance, ultra-violet protection, corrosion resistance and heat resistance. It can be particularly useful for coating high temperature stacks, mufflers, manifolds, boilers, ovens, furnaces, steam lines, heat exchangers, barbecue equipment, cooking utensils and other parts that require such powder coating composition. This composition further provides good initial adhesion.This invention also provides a powder coating composition containing a hydroxyl-functional silicone resin, a glycidyl-functional acrylic resin and an optional flow control agent.Type: GrantFiled: October 29, 1997Date of Patent: May 18, 1999Assignee: H. B. Fuller Licensing & Financing, Inc.Inventors: Wayne G. Eklund, Paula Torrejon Ramos, Charles J. Torborg
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Patent number: 5869557Abstract: Moldable and pigmentable heat-curable compositions which can be employed for forming molded articles with zero or practically zero shrinkage (low profile type) or a small expansion include a heat-curable resin, a catalyst, a (meth)acrylic polymer in powder form with a dimension smaller than 150 .mu.m, at least one inorganic filler and, optionally, reinforcing fibers and organic or inorganic pigments.Type: GrantFiled: November 14, 1996Date of Patent: February 9, 1999Assignee: Atohaas Holding C.V.Inventors: Lionel Landru, Florent Raviola
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Patent number: 5856396Abstract: The present invention is a method of manufacturing rubber wheels and composition therefor used on a portable vehicle adhesive remover for removing pinstripes, decals, side moldings and other items adhering to a vehicle without damaging the original paint of the vehicle.Type: GrantFiled: April 28, 1997Date of Patent: January 5, 1999Assignee: Fisher Tool Co., Inc.Inventor: Howard Vipperman
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Patent number: 5840793Abstract: Disclosed are thermoplastic resin compositions having improved heat resistance, e.g., IR soldering and HDT; increased ductility and flowability; and reduced flash. In particular, the thermoplastic resin compositions have at least one high heat amorphous resin, at least one polysulfide; and, optionally, at least one reinforcing filler and/or at least one polyolefin and/or at least one polyolefin compound and/or at least one polyepoxy compound. The high heat amorphous resin is preferably a polyetherimide and the polyolefin is preferably a high crystalline polyethylene. The compositions of the invention are particularly well suited for preparing no flash high heat electrical connectors.Type: GrantFiled: August 9, 1994Date of Patent: November 24, 1998Assignee: General Electric CompanyInventors: Raymond H. Glaser, Darryl Nazareth, Jerry Jan-nan Yang
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Patent number: 5834541Abstract: A polymer composition and fiber, film or sheet prepared therefrom, which contains (i) an olefin polymer containing an acid neutralizing agent other than a metallic salt of a saturated or unsaturated fatty acid, and ii) a stabilizer system distributed throughout the polymer, the stabilizer system including (a) a phosphite selected from 2,2',2"-nitrilo?triethyl-tris(3,3',5,5'-tetra-tert.butyl-1,1-biphenyl-2,2' -diyl)phosphite! and tris(2,4-di-tert-butylphenyl) phosphite; and (b) a N,N-dialkylhydroxylamine. Also disclosed is a method for preparing a polyolefin fiber, film or sheet, which includes adding the above stabilizer to an olefin polymer containing an acid neutralizing agent other than a metallic salt of a saturated or unsaturated fatty acid, thereby producing a stabilized olefin polymer; and extruding the stabilized olefin polymer through a die.Type: GrantFiled: May 2, 1997Date of Patent: November 10, 1998Assignee: Montell North America Inc.Inventors: Ronald F. Becker, Michael E. Starsinic
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Patent number: 5821282Abstract: A self lubricating material for use in a castable material from which a predetermined component having at least one friction surface is to be manufactured. Such self lubricating type material consisting essentially of cellulose in the range of between about 4.0 weight percent and about 9.0 weight percent, resin in the range of between about 15.0 weight percent and about 20.0 weight percent, vermiculite in the range of between about 20.0 weight percent and about 25.0 weight percent, nut shells in a range of between about 12.0 weight percent and about 20.0 weight percent, fluorspar in a range of between about 11.0 weight percent and about 14.0 weight percent and oil in the range of between about 20.0 weight percent and about 26.0 weight percent.Type: GrantFiled: October 26, 1995Date of Patent: October 13, 1998Assignee: Westinghouse Air Brake CompanyInventor: Joseph F. Formolo
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Patent number: 5804620Abstract: An embrittlement-resistant polymer composition, including: (a) a visbroken polymer composition comprising a crystalline, random copolymer of propylene and either ethylene or C.sub.4 -C.sub.10 1-olefins, and (b) an amount of polymethyl propyl 3-oxy-?4-(2,2,6,6-tetramethyl)piperidinyl! siloxane which is effective to improve the radiation resistance of the composition. Optional components include an acid neutralizing agent, and a sorbitol-based clarifier compound. The composition may be used to manufacture medical articles and food packaging material which must be sterilized, either by irradiation or by autoclaving.Type: GrantFiled: June 18, 1996Date of Patent: September 8, 1998Assignee: Montell North America Inc.Inventor: Stephen E. Amos
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Patent number: 5786415Abstract: The present invention relates to a method of dispersing or treating a mineral filler into a thermoplastic resin; the dispersing agent or agent for treatment of a mineral filler is a styrene-maleic anhydride copolymer, having an weight average molecular weight preferably between 1000 to 3000; the thermoplastic resin is selected from (a) a hydrocarbon homopolymer without an aryl group, (b) a copolymer without an aryl group, and with a molecule comprised of carbon, hydrogen and oxygen in which the content of oxygen atoms does not exceed 22% by weight or (c) a mixture of the above described homopolymer and copolymer; the mineral fillers are basic or have surfaces that have free hydroxyl groups. The present invention relates also to thermoplastic compounds which are highly filled, stable, fluid and homogeneous and which contain mineral agents; further these compositions are useful in the fabrication of plastic products.Type: GrantFiled: December 16, 1996Date of Patent: July 28, 1998Assignee: Coatex S.A.Inventors: Pierre Blanchard, Patrick Trouve
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Patent number: 5783622Abstract: A stainless steel sheet suitable for use in the manufacture of an exhaust component. The steel sheet has at least one surface pretreated with a protective coating resistant to delamination at temperatures up to about 540.degree. C. including an inner inorganic portion and an outer organic portion. The inorganic portion includes at least 50 mg/m.sup.2 of a chromium based conversion coating having a thickness no greater then 0.02 mm. The conversion coating contains particulate silica with the weight ratio of chromium to silica within the range of 1:1 to 2:1. The outer organic portion includes a silicone paint containing 40-60 wt. % silicone resin. The silicone paint is dried at a temperature less than 300.degree. C. in less than one minute and then coated with a copolymer of a thermoplastic acrylic and a lubricant or a polymeric olefin. The acrylic copolymer contains 5-70 wt. % of the lubricant and the polymeric olefin contains 90% olefin resin.Type: GrantFiled: May 5, 1997Date of Patent: July 21, 1998Assignee: Armco Inc.Inventors: Ashok Sabata, Joseph A. Douthett, Sherman E. Winkle, Sr.
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Patent number: 5773503Abstract: The present invention relates to a compacted mineral filler pellet and a method of making the same. The present invention also relates to a method of making a polymeric compound which includes a compacted mineral filler pellet.Type: GrantFiled: December 11, 1996Date of Patent: June 30, 1998Assignee: Luzenac America, Inc.Inventors: William P. Steen, David R. Bloomfield
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Patent number: 5763508Abstract: Dispersion powders including (a) a polymer of vinyl ester, vinyl ester/ethylene, (meth)acrylate or styrene/acrylate homo- and copolymers, (b) 1 to 25% by weight, based on the total weight of the polymer, of a protective colloid, (c) 0.1 to 10% by weight, based on the total weight of the polymer, of at least one saturated carboxylic acid ester of the formula C.sub.n H.sub.(2n+1) COOC.sub.m H.sub.(2m+1) where n=5 to 22 and m=1 to 8, and (d) 0 to 20% by weight, based on the total weight of the polymer, of anticaking agent, are useful, for example, as modifying agents in mortar and concrete for increasing the flexural tensile strength, compressive strength, and/or adhesive strength thereof.Type: GrantFiled: August 22, 1996Date of Patent: June 9, 1998Assignee: Clariant GmbHInventors: Stefan Hess, Michael Schottler, Ludwig Schmitz
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Patent number: 5750597Abstract: A thermosetting resin composition which can be used to produce pultruded products with a lustrous surface finish comprises about 60% to about 95% by weight of an uncured, liquid phenolic resin containing about 70-90% solids by weight and about 5 to about 40% of particles of a molding composition comprising an uncured, solid phenolic resin and a suitable filler.Type: GrantFiled: June 20, 1996Date of Patent: May 12, 1998Assignee: Plastics Engineering CompanyInventor: Phillip A. Waitkus
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Patent number: 5750611Abstract: Odors and flavors in thermoplastic films and shaped articles may be reduced or eliminated by the addition of an adsorption agent to the thermoplastic. Thermoplastics include ethylene/acid copolymers and corresponding ionomers, and ethylene/acid/acrylate terpolymers and corresponding ionomers. The adsorption agent is a crystalline siliceous molecular sieve, having a framework of tetrahedral oxide units, in which at least 90% of the tetrahedral oxide units are SiO tetrahedra, a pore diameter greater than 5.5 Angstroms and a sorption capacity for water of less than 10% by weight at 25.degree. C. and 4.6 torr.Type: GrantFiled: July 17, 1996Date of Patent: May 12, 1998Assignee: E. I. du Pont de Nemours and CompanyInventor: Yves Trouilhet
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Patent number: 5741833Abstract: A raw material for injection molding comprising a metal powder or a ceramic powder, and a binder containing at least two types of resins, obtained by coating or encapsulating the metal powder or ceramic powder particles with a resin insoluble in a predetermined solvent and having a high softening temperature, and subsequently kneading the resultant powder and a resin soluble in the solvent and having a low softening temperature.Type: GrantFiled: February 9, 1995Date of Patent: April 21, 1998Assignee: Fujitsu LimitedInventors: Yoshihiko Seyama, Yutaka Shimizu, Shinya Iijima
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Patent number: 5731374Abstract: An organic solvent-based paint is provided which has, among other things, a perlitic component. The paint resists thermal loading and loss. A series addition of components provides the paint efficiently. The paint is useful for many substrates, including metals.Type: GrantFiled: April 5, 1994Date of Patent: March 24, 1998Assignee: P.S.A.M.S., Inc.Inventors: John W. Good, Rufus H. Kerry
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Patent number: 5726221Abstract: Water-based correction fluids for covering typing, writing or drawing errors contain a particulate opacifier, a water-soluble or water-dispersible binder, water and a di- or tri-quaternary ammonium compound to prevent bleed of inks.Type: GrantFiled: October 10, 1996Date of Patent: March 10, 1998Assignee: The Gillette CompanyInventor: Michael Alexiou
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Patent number: 5717020Abstract: A film and molded article are described, consisting of a thermoplastic based on a partially crystalline ethylene-propylene-diene terpolymer, a homo- and/or copolymer of an alkene, and a polymeric modifying agent, wherein the plastic possibly contains stabilizers, fillers, lubricants, colorants, and flame retardants, as well as conventional additives.Type: GrantFiled: April 10, 1997Date of Patent: February 10, 1998Assignee: J.H. Benecke AGInventor: Walter Kopytko
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Patent number: 5688851Abstract: An improved gel coat for integral molded products having increased hardness consists of a synthetic resin mixed with tabular alumina and a surface treating agent such as gamma-Methacryloxypropyltrimethoxysilane. The gel coat may be applied as a first layer over a mold, pattern, part, or other surface with a filler reinforced resin layer applied to the first layer or with an intermediate layer of resin filled with calcium silicate applied between the gel coat and the reinforced layer. The gel coat may also be used as a surface coating for steel, composite, and concrete structures.Type: GrantFiled: September 18, 1995Date of Patent: November 18, 1997Assignee: Ceramal Research & Development CorporationInventor: Russell L. Kress
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Patent number: 5684122Abstract: A transparent N-alkyl-substituted maleimide/olefin copolymer composite material is provided which comprises 100 parts by weight of an N-alkyl-substituted maleimide/olefin copolymer, and 0.1 to 100 parts by weight of phyllosilicate, the phyllosilicate being dispersed uniformly and finely in a matrix of the N-alkyl-substituted maleimide/olefin copolymer. A process for producing the N-alkyl-substituted maleimide/olefin copolymer composite material is also provided. The N-alkyl-substituted maleimide/olefin copolymer composite material is excellent in transparency, heat resistance, rigidity, and dimensional stability.Type: GrantFiled: April 5, 1996Date of Patent: November 4, 1997Assignee: Tosoh CorporationInventors: Hiroshi Inoue, Toru Doi
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Patent number: 5674932Abstract: The invention relates to a process for preparation of a rubber composition containing silica reinforcement through the utilization of a high purity organosilane disulfide/trisulfide.Pneumatic tires having treads prepared by such process are provided.Type: GrantFiled: December 2, 1996Date of Patent: October 7, 1997Assignee: The Goodyear Tire & Rubber CompanyInventors: Giorgio Agostini, Uwe Ernst Frank, Thierry Florent Edme Materne, Friedrich Visel, Rene Jean Zimmer
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Patent number: 5670608Abstract: A polyamide (9-T polyamide) comprising (a) 60 to 100 mole of terephthalic acid and (b) a diamine component comprising 60 to 100 mole % of 1,9-nonanediamine, said polyamide having an intrinsic viscosity ?.eta.! as determined by measurement in concentrated sulfuric acid at 30.degree. C. of 0.6 to 2.0 dl/g and having at least 10% of terminal groups thereof blocked. Another polyamide (9M-T polyamide) comprises a dicarboxylic acid component (a) comprising 60 to 100 mole % of terephthalic acid and a diamine component (b) comprising 60 to 100 mole % of 1,9-nonanediamine and 2-methyl-1,8octanediamine, the molar ratio between said 1,9 nonanediamine and said 2-methyl-1,8-octanediamine being in a range of 60:40 to 99:1, said polyamide having an intrinsic viscosity ?.eta.! as determined by measurement in concentrated sulfuric acid at 30.degree. C. of 0.4 to 3.0 dl/g.Type: GrantFiled: December 22, 1994Date of Patent: September 23, 1997Assignee: Kuraray Co., Ltd.Inventors: Hideaki Oka, Tsugunori Kashimura, Shinichi Yokota, Hiroshi Hayashihara
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Patent number: 5650461Abstract: The present invention relates to paint compositions which provide a Chemical Agent Resitant Coating (CARC), consisting of one layer topcoat paint system, which imparts an increase in the reflectivity at the thermal infra-red region, while controlling the colour in the visible range and are maintaining a low gloss, comprising: an extender selected from polyolefins and substituted polyolefins; a pigment, selected from a metal oxide calcined at a temperature of above 600.degree. C. and a paste of metal flakes and any mixture thereof; a binder consisting of a modified polyurethane resulted from an isocyanate and a co-reactant possessing at least two hydroxy groups, and a solvent system to dissolve the components in the paint composition.Type: GrantFiled: September 6, 1995Date of Patent: July 22, 1997Assignee: State of Israel-Ministry of Defence, Armament Development Authority, RAFAELInventors: Shulamit Wasserman, Igal E. Klein
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Patent number: 5637629Abstract: Reinforced polyolefinic thermoplastic composition comprising a polyolefin, an aluminum and/or magnesium silicate and a maleamic silane.Type: GrantFiled: August 7, 1996Date of Patent: June 10, 1997Assignee: Enichem S.p.A.Inventors: Alessandro Moro, Italo Borghi, Paolo Venti, Domenico Vianello, Roberto Pippa
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Patent number: 5624990Abstract: The present invention is a method of manufacturing rubber wheels and composition therefor used on a portable vehicle adhesive remover for removing pinstripes, decals, side moldings and other items adhering to a vehicle without damaging the original paint of the vehicle.Type: GrantFiled: July 22, 1991Date of Patent: April 29, 1997Assignee: Fisher Tool Co., Inc.Inventor: Howard Vipperman
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Patent number: 5612393Abstract: The invention relates to a casting core composition including refractory mullite grains and 1.0-2.2 wt % of a phenolic resin for binding the mullite grains. The mullite grains are substantially spherical in shape and have a special grain size distribution. That is, the mullite grains contain first to eighth fractions. These fractions respectively have first to eighth diameters which are respectively within ranges of larger than 420 .mu.m, 297-420 .mu.m 210-297 .mu.m, 149-210 .mu.m, 105-149 .mu.m, 74-105 .mu.m, 53-74 .mu.m, and smaller than 53 .mu.m.Type: GrantFiled: April 24, 1996Date of Patent: March 18, 1997Assignees: Nissan Motor Co., Ltd., Aichi Machine Industry Co. Ltd.Inventors: Takuya Arakawa, Hiroshi Tako, Toru Tohata
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Patent number: 5612397Abstract: The composition having wet state clarity includes an aqueous latex binder combination of polymer particles with a diameter of less than 80 nanometers and a thickener. When glitter flakes are dispersed in these novel compositions in their wet state, they glitter more than conventional glitter compositions. Thus, they are more appealing to a consumer or an artist than conventional glitter compositions that tend to be cloudy or dull in their wet state.Type: GrantFiled: December 19, 1994Date of Patent: March 18, 1997Assignee: Rohm and Haas CompanyInventors: Matthew S. Gebhard, William E. deVry, Caren A. Puschak, Anne M. Bacho, Gary R. Larson
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Patent number: 5610215Abstract: An aqueous emulsion coating composition exhibiting a viscosity of at least 20 centipoise, containing a binder with a molecular weight of preferably at least 50,000, and more preferably, greater than 500,000, and a glass transition temperature of at least 10.degree. C., and a filler, wherein the binder is present in about 20 parts to about 50 parts by weight and the filler up to about 60 parts by weight. The composition also contains effective amounts of one or more additives consisting of coalescents, humectants, thickeners, surfactants and defoamers. The composition is particularly well suited to application to substrates common to the hobby, modeling and toy industry. Generally, it is preferred to apply the hobby/modeling composition via an air brush and allow the coating to cure at temperatures at least 13.degree. C. for as long as one week to generate the maximum obtainable properties.Type: GrantFiled: November 24, 1993Date of Patent: March 11, 1997Assignee: Gregory A. KonradInventors: Mark A. Nonweiler, Gregory F. Konrad, Dennis A. Wiatrowski
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Patent number: 5607996Abstract: This invention is directed to an ER elastomer composition comprising natural rubber and polarizable particles dispersed therein, which elastomer can undergo changes in Youngs modulus when subjected to an electric field and having a Youngs modulus of at least about 2 Mpa when not subject to an electric field, wherein the ratio of the electrical conductivity of the particles to the electrical conductivity of the natural rubber is between about 10.sup.4 and 10.sup.10. The invention also include variable stiffness mounts, such as engine mounts, made from the composition.Type: GrantFiled: October 5, 1994Date of Patent: March 4, 1997Assignee: Ford Motor CompanyInventors: Mark E. Nichols, John M. Ginder, Larry D. Elie, Robert A. Pett
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Patent number: 5599874Abstract: A thermoplastic polyurethane elastomeric seal composition comprising, by weight, about 90% to 99% thermoplastic polyurethane elastomer and about 1% to 10% fibers. Also, the thermoplastic polyurethane elastomer is derived from the reactants comprising: (i) a mixture of polyol and an aromatic chain extender in a molar ratio in the range of from about 40:60 to about 60:40 of butanediol glycol adipate to hydroquinone bis 2-hydroxyethyl ether, and (ii) 1,5 naphthalene diisocyanate present in a molar ratio in the range of about 50:50 to about 54.5:45.5 of 1,5 naphthalene diisocyanate to the said first mixture of polyol and an aromatic chain extender. After curing, the thermoplastic polyurethane elastomeric seal compound has outstanding wear resistance and low compression set.This thermoplastic polyurethane elastomeric seal compound is particularly useful in making shaft seals subject to high wear and high pressure, for use in hydraulic rams in earthmoving equipment.Type: GrantFiled: July 13, 1995Date of Patent: February 4, 1997Assignee: Caterpillar Inc.Inventors: Stephen M. Singer, Mark T. Allott
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Patent number: 5594045Abstract: Water-based correction fluids for covering typing, writing or drawing errors contain a particulate opacifier, a water-soluble or water-dispersible binder, water and a di- or tri-quaternary ammonium compound to prevent bleed of inks.Type: GrantFiled: December 1, 1994Date of Patent: January 14, 1997Inventor: Michael Alexiou
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Patent number: 5591379Abstract: This invention describes a composition of matter having moisture gettering properties and applicable as coating or adhesive in a hermetic microelectronic device. The composition is applied to the interior surface of the packaging at a thickness of 0.1-25 mil and comprises a desiccant finely dispersed in a binder which is a water vapor permeable solid material. This may be a polymer, porous ceramic or glass. The desiccant is a particulate solid with 0.2-100 micrometer average particle size. It ought to be able to absorb from a one atmosphere pressure gas containing one volume percent water vapor at least four parts by weight of water vapor per 100 parts by weight of desiccant at 25.degree. C., and for high reliability devices, it should also be able to absorb at least two parts by weight of water vapor per 100 parts by weight of desiccant at 100.degree. C. The desiccant to binder volume ratio ought to be between 0.002 and 2.Type: GrantFiled: August 2, 1993Date of Patent: January 7, 1997Assignee: Alpha Fry LimitedInventor: A. Andrew Shores
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Patent number: 5591787Abstract: A fluorescent color hard lead for color pencils and marking crayons includes a matrix comprised of at least one material selected from the group consisting of a fatty acid metal salt, a fatty acid ester, and a wax; a binder; and a filler which is aluminum silicate; and particles which are intimately mixed into the matrix and which are comprised of at least one synthetic polymer and at least one fluorescent dye with which the at least one synthetic polymer is dyed, the at least one synthetic polymer being selected from the group consisting of homopolymers from one monomer and copolymers from at least two monomers, the monomers being selected from the group consisting of acrylic acids, acrylates, acrylonitriles, and styrene, which monomers have been polymerized in an aqueous solution into which is added the at least one fluorescent dye to provide a dispersion, which dispersion is added to the matrix directly, wherein the dyed particles are uniformly distributed throughout the matrix whereby the fluorescent coloType: GrantFiled: June 7, 1995Date of Patent: January 7, 1997Assignee: A.W.-Faber Castell Unternehmensverwaltung GmbH & Co.Inventors: Barbara Schlennert, Gerhard Lugert
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Patent number: 5585428Abstract: The invention relates to(1) a method of preparing sintered shapes, comprising the steps of forming a green body from a mixture comprising (A) a major amount of at least one inorganic powder with (B) at least one reaction product of a alkanol-amine with a hydrocarbyl-substituted carboxylic acylating agent provided that when the hydrocarbyl group of the acylating agent contains less than 40 carbon atoms then the carboxylic acylating agent is a polycarboxylic acylating agent; and (2) sintering the body. Sintered shapes made from the methods of the present invention have relatively high fired densities and small uniform grain sizes; and low porosity. The reaction products of the present invention help disperse the inorganic powder. These reaction products also improve deagglomeration of the inorganic powder and help prevent reagglomeration of the powder.Type: GrantFiled: August 1, 1995Date of Patent: December 17, 1996Assignee: The Lubrizol CorporationInventors: Robert E. Quinn, W. Michael Burk
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Patent number: 5580919Abstract: The invention relates to a process for preparation of a rubber composition containing silica reinforcement through the utilization of a high purity organosilane disulfide.Pneumatic tires having treads prepared by such process are provided.Type: GrantFiled: March 14, 1995Date of Patent: December 3, 1996Assignee: The Goodyear Tire & Rubber CompanyInventors: Giorgio Agostini, Uwe E. Frank, Thierry F. E. Materne, Friedrich Visel, Ren e J. Zimmer
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Patent number: 5576372Abstract: Tire innerliners and inner tubes are prepared from blends of general purpose rubbers and silicate clay. The clays provide the requisite low air permeability without adversely affecting the flexibility of the rubber composition.Type: GrantFiled: June 7, 1995Date of Patent: November 19, 1996Assignee: Exxon Chemical Patents Inc.Inventors: Edward N. Kresge, David J. Lohse
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Patent number: 5567750Abstract: The invention provides a redispersibte dispersion powder composition comprisinga) a base polymer selected from the group consisting of vinyl ester polymers, styrene polymres, acrylate polymers and vinyl chloride polymers,b) from 2 to 15% by weight, based on the weight of the base polymer, of polyvinyl alcohol having a degree of hydrolysis of from 85 to 95 mol % and a Hoppler viscosity of from 2 to 25 mPa.s,c) from 3 to 30% by weight, based on the total weight of polymeric components, of fine antiblocking agent, andd) from 1 to 15% by weight, based on the weight of the base polymer, of an aminofunctional polyvinyl alcohol soluble in cold water and having a Hoppler viscosity of from 1 to 20 mPa.s and a saponification number of from 0 to 250, which comprises residues of aminofunctional vinyl units of the formula CH.sub.2 .dbd.CH--(CH.sub.2).sub.x --NH.sub.2, wherein x is a number of from 0 to 4.Type: GrantFiled: June 22, 1994Date of Patent: October 22, 1996Assignee: Wacker-Chemie GmbHInventors: Joachim Schulze, Reinhard Haerzschel, Reiner Figge
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Patent number: 5563200Abstract: A coating powder composition for providing a smooth, heat-resistant coating contains A) between about 60 and about 95 parts by weight or a polyester resin which has either hydroxyl functionality of 2 or greater or carboxylic acid functionality of 2 or greater, B) between about 5 and about 40 parts by weight of a curative for the polyester resin A), A) and B), in total, being 100 parts resin, C) between about 50 and about 150 parts per hundred resin by weight (phr) silicone resin, D) between about 20 and about 100 phr of a filler selected from calcium silicate, silica, magnesium aluminum silicate, calcium carbonate, barium sulfate, and mixtures thereof, E) between about 1 and about 10 phr silicone rubber, and F), up to about 50 phr mica.Type: GrantFiled: September 21, 1995Date of Patent: October 8, 1996Assignee: Morton International, Inc.Inventors: Andrew T. Daly, Leo T. Grundowski
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Patent number: 5561185Abstract: There is disclosed a fire-retardant resin composition, comprising a polypropylene-series resin (a), a modified polyethylene modified with an unsaturated carboxylic acid or its derivative (b), a metal hydrate (c), and an ethylene-series copolymer (d), in a specific ratio; and an electric wire with a cover layer formed on the circumference of a conductor, in which the cover layer is composed of a composition prepared by blending (c) a metal hydrate with, in a specific ratio, a resin mixture, containing (a) a polypropylene-series resin, (b) a modified polyethylene, and (d) an ethylene-series copolymer.The fire-retardant resin composition is excellent in tensile strength, heat resistance, extrudability, and moldability. The covered electric wire is excellent in electric-wire properties and good in the end workability.Type: GrantFiled: November 7, 1994Date of Patent: October 1, 1996Assignees: The Furukawa Electric Co., Ltd., Ube Industries, Ltd.Inventors: Dai Hashimoto, Masaki Nishiguchi, Shinichi Irie, Yoshihiro Inuizawa, Yasuhiro Kamei
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Patent number: 5559170Abstract: The disclosure describes a method for producing bulk, particulate material that includes solid, generally ellipsoidal particles by dispersing irregularly shaped feed particles including about 60 to 100% by weight of at least one silicate-containing material selected from among wollastonite, alkali feldspar, plagioclase feldspar and nepheline. While maintaining the feed particles in dispersion, they are heated sufficiently to bring about at least partial fusion within at least the surfaces of the particles. This produces a bulk particulate product of which about 15 to 100% by volume is generally ellipsoidal particles. Also described are compositions of matter including solid particles, at least a portion of which are substantially glassy and generally ellipsoidal. At least a portion of these particles have been respectively formed from feed particles composed substantially of at least one silicate selected from among wollastonite, alkali feldspar, plagioclase feldspar and nepheline.Type: GrantFiled: May 31, 1995Date of Patent: September 24, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventor: Richard B. Castle
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Patent number: 5550180Abstract: A latex composition comprising, as a rheology modifier, an effective amount of a boehmite alumina having a crystal size (020 plane) of less than about 60 Angstroms and a surface area, when calcined to gamma phase, of greater than approximately 200 m.sup.2 /g, the boehmite alumina being present in an amount effective to obtain the desired rheological properties of the composition.Type: GrantFiled: December 2, 1994Date of Patent: August 27, 1996Assignee: Condea Vista CompanyInventors: Cutis M. Elsik, Ronald L. Beggs
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Patent number: 5545679Abstract: An improved PTC current limiting composition has been provided which comprises a chemically cross-linked thermosetting polyester resin and conductive particles dispersed in the resin. The thermosetting polyester resin is selected from the group consisting of polyethylene glycol fumarate, polypropylene glycol adipate fumarate, neopentyl glycol isophthalate fumarate, and neopentyl glycol phthalate fumarate. The conductive additive particles are selected from the group consisting of graphite and/or carbon black. The composition exhibits PTC behavior when cross-linked by a vinyl monomer selected from the group consisting of styrene, vinyl toluene and tertiary butyl styrene. Curing proceeds by free-radical addition across double bonds of the thermosetting polyester resin and is initiated by organic peroxides. Initial gelation which causes cross-linking but not final curing takes about 0.5 to 4 hours at a temperature of about 25.degree. C. to 125.degree. C. The final cure takes about 0.Type: GrantFiled: January 17, 1995Date of Patent: August 13, 1996Assignee: Eaton CorporationInventors: Parker A. Bollinger, Jr., Denis A. Mueller, James D. B. Smith, Henry A. Wehrli, III
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Patent number: 5532302Abstract: An improved flame-retardant composition and method for its use are provided. The composition imparts flame retardency to synthetic thermoplastic resins to prevent dripping of the melt of the resin when the resin is burnt. The composition comprises a flame retardant agent such as phosphate ester compound, optionally combined with a metal hydroxide, and an organopoly-siloxane-based graft copolymer of a (meth)acrylic acid ester such as methyl(meth)-acrylate. The flame retardant is used in an amount from 1-50 parts by weight per 100 parts by weight of the synthetic resin, and the graft copolymer provides 0.5 to 20 parts by weight of an organosilicone group per 100 parts by weight of the synthetic resin.Type: GrantFiled: February 28, 1994Date of Patent: July 2, 1996Assignees: Shin-Etsu Chemical Co., Ltd., Nissin Chemical Industry Co., Ltd.Inventors: Tetsuo Nakanishi, Mitsuo Asai, Hiroyuki Ohata, Keiichi Uchida