Triphenyl Phosphite Per Se Patents (Class 524/153)
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Patent number: 8048945Abstract: 4,4?-Biphenol polysulfone composition comprising: as main ingredient, at least one polysulfone comprising more than 50 mol. % of recurring units formed by reacting 4,4?-biphenol with at least one sulfone monomer SM1 (Bo1 PSU), more than 0.01% by weight, based on the total weight of the composition, of at least one phosphorus-containing compound chosen from organic phosphites and organic phosphonites, and at least one polysulfone comprising more than 50 mol. % of recurring units formed by reacting bisphenol A with at least one sulfone monomer SM2 (Bo1 A PSU). 4,4?-Biphenol polysulfone composition containing at least 60% by weight, based on the total weight of the 4,4?-biphenol polysulfone composition, of at least one Bo1 PSU, said composition having a melt viscosity ratio at 410° C. and at a shear rate of 50 s?1 (VR40) of below 1.20. Process which is especially well-suited to prepare the above compositions. Articles made from the above compositions or prepared by the above process.Type: GrantFiled: February 4, 2010Date of Patent: November 1, 2011Assignee: Solvay Advanced Polymers, L.L.C.Inventor: Mohammad Jamal El-Hibri
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Patent number: 8044126Abstract: The present invention relates to a polyarylene sulfide resin composition, which comprises polyarylene sulfide (A) and polyamide (B) as essential components, and further includes an organic phosphorus compound (C), which is selected from the group consisting of an aromatic phosphite compound and an aromatic phosphonate compound, and an inorganic phosphorus compound (D), which is selected from the group consisting from a metal salt of phosphorous acid and a metal salt of hypophosphoric acid as essential components, in addition to the polyarylene sulfide (A) and the polyamide (B); a manufacturing method thereof; and a surface mount electronic component. The polyarylene sulfide resin composition has excellent heat resistance, does not decrease mechanical properties such as bending strength even if heating treatment is performed under the high temperature condition by passing through a reflow furnace, and has excellent flame retardance.Type: GrantFiled: January 28, 2009Date of Patent: October 25, 2011Assignee: DIC CorporationInventors: Yasuyuki Yoshino, Hirokiyo Nakase, Hiroaki Negishi, Yohei Yamaguchi, Shinya Gibo
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Patent number: 8022164Abstract: A two-component solvent-free polyurethane laminating adhesive for flexible packaging, including a First Component and a Second Component is provided. The First Component, which acts as a resin, includes a first vegetable oil based Polyol A in an amount from 20 to 40 weight percent, a second vegetable oil based Polyol B in an amount from 0.5 to 5 weight percent, and a Polyisocyanate C in an amount from 60 to 74 weight percent. The Second Component, which acts as a hardener, includes a first vegetable oil based Polyol A in an amount from 87 to 99 weight percent, and a Polyol E in an amount from 0.5 to 5 weight percent. The first vegetable oil based Polyol A is preferably a hydroxylated castor oil, and the second vegetable oil based Polyol B is preferably hydroxylated linseed oil.Type: GrantFiled: March 4, 2010Date of Patent: September 20, 2011Assignees: Microvast, Inc., Huzhou Ochem Chemical Co., Ltd.Inventors: Yang Wu, Chaofeng Ning, Xinbing Yuan, Xinping Feng
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Publication number: 20110224338Abstract: This invention relates to a method for additivating polymer resins with antioxidants and antiUV stabilsers. It is particularly suitable for resins used rotomoulding applications.Type: ApplicationFiled: October 1, 2009Publication date: September 15, 2011Applicant: TOTAL PETROCHEMICALS RESEARCH FELUYInventor: Eric Maziers
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Patent number: 8017716Abstract: A poly(2,6-dimethyl-1,4-phenylene ether) prepared using a morpholine-containing polymerization catalyst has a monomodal molecular weight distribution with a reduced content of very high molecular weight species. It also exhibits increased morpholine incorporation in the high molecular weight fraction. Compared to commercially available poly(2,6-dimethyl-1,4-phenylene ether) prepared using a di-n-butylamine-containing polymerization catalyst, the poly(2,6-dimethyl-1,4-phenylene ether) of the invention exhibits reduced odor. Compared to other poly(2,6-dimethyl-1,4-phenylene ether) prepared using a morpholine-containing polymerization catalyst, the poly(2,6-dimethyl-1,4-phenylene ether) of the invention exhibits improved molecular weight build during compounding and improved compatibilization with polyamides.Type: GrantFiled: July 1, 2009Date of Patent: September 13, 2011Assignee: Sabic Innovative Plastics IP B.V.Inventors: Alvaro Carrillo, Stephen M. Farnell, Hua Guo
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Publication number: 20110144250Abstract: The present invention relates to a heat-absorbing polymer composition containing a transparent thermoplastic synthetic substance, an inorganic infrared absorber with stabiliser and also to the production and use of the polymer compositions according to the invention and to the products produced therefrom. In particular, the present invention relates to the stabilisation of inorganic IR absorbers from the group of the tungsten compounds and also to the use of the polymer composition according to the invention containing these stabilised inorganic IR absorbers for the purpose of producing windowpanes for use in buildings, motor vehicles, rail vehicles or aircraft.Type: ApplicationFiled: December 13, 2010Publication date: June 16, 2011Applicant: Bayer MaterialScience AGInventors: Alexander Meyer, Rolf Wehrmann, Anke Boumans, Michael Erkelenz
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Publication number: 20110136950Abstract: Disclosed are polypropylene articles with improved optical properties and/or an increased temperature of crystallization comprising a polypropylene resin and uniformly dispersed therein from about 1 ppm to about 10 ppm of one or more polycyclic organic pigments selected from blue, green, magenta, red, yellow, orange and violet polycyclic organic pigments and from about 50 ppm to about 250 ppm of one or more aromatic trisamide nucleating agents, where the ppm levels are by weight based on the weight of the polypropylene resin. The polypropylene is for example polypropylene homopolymer. The articles exhibit reduced haze, increased temperature of crystallization and excellent clarity.Type: ApplicationFiled: November 30, 2010Publication date: June 9, 2011Applicant: BASF SEInventors: Jiong Yu, Gerard R. Finnegan, Ralph-Dieter Maier
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Publication number: 20110130492Abstract: The present invention pertains to compositions comprising (a) a polyether polyol, a polyester polyol or a polyurethane, (b) a UV-absorber of formula (I) and/or a hindered amine liaht stabilizer of formula (II) wherein R1 and R2 are each independently C1-C4alkyl or C1-C4alkyoxy, and (c) at least one further UV-absorber and/or hindered amine light stabilizer if only one of the components (I) and (II) is present with the proviso that component (c) is not a compound of formula (A)-(D) as defined in claim 1.Type: ApplicationFiled: February 10, 2011Publication date: June 2, 2011Inventors: DIETMAR MÄDER, Pierre Rota-Graziosi
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Publication number: 20110057349Abstract: The use of oxidizable phosphorus or phosphorous stabilizers, such as the phosphites, to reduce the color formation of the ionomeric polyester compositions is disclosed.Type: ApplicationFiled: November 11, 2010Publication date: March 10, 2011Inventor: Paul Lewis HEATER
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Publication number: 20110028618Abstract: The invention is directed to various alkylaryl phosphite compositions that ideally are suitable for use as secondary antioxidants in polymers. In one aspect, the phosphite composition comprises a tris(monoalkylaryl)phosphite in an amount from 51 to 95 weight percent; and at least one of: a bis(monoalkylaryl)dialkylaryl phosphite; a bis(dialkylaryl)monoalkylaryl phosphite; and a tris(dialkylaryl)phosphite. The inventive phosphite composition is a solid at ambient conditions. The invention also relates to alkylate compositions and processes for forming such alkylate compositions and such phosphite compositions.Type: ApplicationFiled: July 26, 2010Publication date: February 3, 2011Inventors: Michael E. Gelbin, Jonathan S. Hill, Maurice Power
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Publication number: 20110028619Abstract: Hydrolytically stable phosphites as secondary antioxidants for polymer resins comprising a phosphite and an amine compound. The phosphite may be a liquid phosphite composition. The amine compound may have the structure of formula I: wherein x is 1, 2 or 3; R1 is selected from the group consisting of hydrogen, and straight or branched C1-C6 alkyl, and R2 is selected from the group consisting of straight or branched C1-C30 alkyl.Type: ApplicationFiled: July 28, 2010Publication date: February 3, 2011Inventors: Jonathan Hill, Maurice Power
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Patent number: 7875663Abstract: A polyolefin composition which comprises: (a) a polyolefin containing transition metal catalyst residue (excluding metallic co-catalyst residues) at a level below 5 ppm based on the weight of the polyolefin; (b) optionally a first stabilizing component consisting of a phenolic antioxidant or mixture of phenolic antioxidants; (c) optionally a second stabilizing component consisting of a phosphite antioxidant or a mixture of phosphite antioxidants; and (d) a third stabilizing component which acts also as a color suppressant and which is a polyfunctional alcohol, amine or amide or mixtures thereof, with at least one of (b) and (c) present and with the proviso that if the phosphite antioxidant is trilauryl phosphite it must be used in combination with another phosphite. The preferred stabilizing components (b) is 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6 dimethyl,benzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione or mixed tocopherols.Type: GrantFiled: July 26, 2006Date of Patent: January 25, 2011Assignee: Chemtura Europe GmbHInventors: Klaus Keck-Antoine, Claude Totelin, Bruno Dejolier
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Patent number: 7847007Abstract: The present invention provides a light-diffusing resin composition comprising (A) an aromatic polycarbonate resin in an amount of 100 parts by mass, (B) an acrylic resin in an amount of 0.01 to 1 part by mass, and (C) a light-diffusing agent in an amount of 0.01 to 10 parts by mass, the light-diffusing resin composition which is usable for optical elements in the field of liquid crystal displays, such as light diffuser plates, optical lenses and optical guide plates, street lamp covers, glass substitutes such as laminated glass for vehicles or construction materials, and the like.Type: GrantFiled: April 5, 2005Date of Patent: December 7, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hiroshi Kawato, Masami Kogure, Yosihiko Horio
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Patent number: 7790791Abstract: The molding defect known as “splay” is reduced in poly(arylene ether) injection molding compositions including specific amounts of poly(arylene ether), rubber-modified polystyrene, triaryl phosphate, and aryl phosphite. The molding compositions are particularly useful for injection molding articles with large, thin sections, such as battery cases for the back-up batteries used in wireless towers.Type: GrantFiled: October 21, 2008Date of Patent: September 7, 2010Assignee: Sabic Innovative Plastics IP B.V.Inventor: Sean W. Culligan
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Patent number: 7691927Abstract: A process for stabilising a natural or synthetic organic polymer or copolymer obtained from a water based latex or emulsion of the polymer or copolymer comprising adding to the later or emulsion prior to coagulation of the polymer or copolymer a substantially water-free self-emulsifying liquid stabiliser mixture comprising (a) a phosphite or phosphonite stabiliser; (b) a phenolic antioxidant and (c) an emulsifying agent. The preferred stabiliser package is a blend of 2 parts by weight liquid phosphite stabiliser to 1 part by weight liquid phenolic antioxidant which has dissolved in it a fatty acid ester emulsifier.Type: GrantFiled: July 26, 2005Date of Patent: April 6, 2010Assignee: Chemtura Europe GmbHInventors: Corrado Callierotti, Jonathan Simon Hill
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Patent number: 7691926Abstract: 4,4?-Biphenol polysulfone composition comprising: as main ingredient, at least one polysulfone comprising more than 50 mol. % of recurring units formed by reacting 4,4?-biphenol with at least one sulfone monomer SM1 (Bo1 PSU), more than 0.01% by weight, based on the total weight of the composition, of at least one phosphorus-containing compound chosen from organic phosphites and organic phosphonites, and at least one polysulfone comprising more than 50 mol. % of recurring units formed by reacting bisphenol A with at least one sulfone monomer SM2(Bo1 A PSU). 4,4?-Biphenol polysulfone composition containing at least 60% by weight, based on the total weight of the 4,4?-biphenol polysulfone composition, of at least one Bo1 PSU, said composition having a melt viscosity ratio at 410° C. and at a shear rate of 50 s?1 (VR40) of below 1.20. Process which is especially well-suited to prepare the above compositions. Articles made from the above compositions or prepared by the above process.Type: GrantFiled: December 17, 2003Date of Patent: April 6, 2010Assignee: Solvay Advanced Polymers, L.L.C.Inventor: Mohammad Jamal El-Hibri
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Patent number: 7652082Abstract: A thermoplastic compositions containing polycarbonate and a UV absorbing compound conforming to Formula 1 wherein R denotes a branched or unbranched alkyl group with 4 to 10 carbon atoms is disclosed. The composition is suitable for making molded or extruded articles, including multilayered articles exhibiting improved weatherability.Type: GrantFiled: August 30, 2006Date of Patent: January 26, 2010Assignee: BASF SEInventors: Claus Rüdiger, Frank Buckel, Peter Schwarz, Jürgen Röhner, Tanja Grüter-Reetz
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Publication number: 20090247673Abstract: The present invention relates to compositions comprising A) aromatic polycarbonate, B) polyalkylene terephthalate and C) a concentrate comprising polyalkylene terephthalate and at least one compound selected from the group consisting of ortho-phosphoric acid, phosphorous acid, carboxylic acid esters of ortho-phosphoric acid and carboxylic acid esters of phosphorous acid, Compositions of the present invention are distinguished by high melt stability. The present invention also relates to a process for the preparation of impact-modified polyalkylene terephthalate/polycarbonate compositions, wherein a concentrate of polyalkylene terephthalate with a phosphorus-containing additive is used.Type: ApplicationFiled: March 20, 2009Publication date: October 1, 2009Applicant: Bayer MaterialScience AGInventors: Pierre MOULINIE, Ralf Hufen, Stephan Konrad, Dieter Wittmann
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Patent number: 7491763Abstract: A polyamide composition has (a) a polyamide, (b) at least one phosphorus compound selected from the group consisting of phosphoric acids, phosphorous acids, hypophosphorous acids, metal phosphates, metal phosphites, metal hypophosphites, phosphoric esters, and phosphorous esters, and (c) a soluble metal aluminate compound represented by the general formula (M2O)x(Al2O3)y (wherein X+Y=1 and M is a Group 1 metal of the Periodic Table), wherein the molar ratio of polyvalent metal to monovalent metal in the composition (polyvalent metal/monovalent metal) is from 0.25 to 1.0.Type: GrantFiled: July 9, 2003Date of Patent: February 17, 2009Assignee: Asahi Kasei Chemicals CorporationInventors: Masaaki Aramaki, Asami Ohashi
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Patent number: 7411014Abstract: A composition comprising a phosphorus containing stabilizer and a polyetherimide sulfone resin having an amount of anhydride functional end groups in excess of the amount of amine functional end groups. The composition may optionally comprise a hindered phenol.Type: GrantFiled: June 9, 2005Date of Patent: August 12, 2008Assignee: Sabic Innovative Plastics IP B.V.Inventors: Robert R. Gallucci, Jon M. Malinoski
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Publication number: 20080167410Abstract: Disclosed herein are a polyester resin composition and a plastic article produced from the resin composition. The polyester resin composition comprises about 100 parts by weight of a polybutylene terephthalate base resin, about 10 to about 50 parts by weight of a polyethylene terephthalate glycol resin, about 0.1 to about 10 parts by weight of an inorganic filler, and about 0.01 to about 5 parts by weight of a resin stabilizer.Type: ApplicationFiled: December 28, 2007Publication date: July 10, 2008Inventors: In Sik SHIM, Jong Cheol Lim
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Patent number: 7361703Abstract: This invention provides a process for the stabilization of thermoplastic polyolefins during melt processing operations. The stabilizer package of this invention is “phenol free” and must contain at least one aryl monophosphite and at least one diphosphite. The process of this invention is especially suitable for the manufacture of polyethylene film.Type: GrantFiled: March 28, 2005Date of Patent: April 22, 2008Assignee: Nova Chemical (International) S.A.Inventors: Tony Tikuisis, Norman Dorien Joseph Aubee, Denny Paul Sauvageau, Laura Elaine Ellis, Ian Robert Gibbons, P. Scott Chisholm
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Patent number: 7297746Abstract: A hardener composition for use as a component of a two component polyurethane coating composition, comprising a polyisocyanate, a catalyst for promoting reaction of the polyisocyanate with a reactive hydrogen compound, and one or more antioxidants selected from: a first antioxidant comprising one or more of sterically hindered phenol antioxidants and secondary aryl amine antioxidants, and a second antioxidant comprising one or more organophosphite antioxidant, exhibits improved color stability.Type: GrantFiled: July 14, 2004Date of Patent: November 20, 2007Assignee: Rhodia Inc.Inventors: Richard Rosen, Jean-Marie Bernard, Shiming Wo, Corinne Simone Duffy
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Patent number: 7262237Abstract: Curable urea formaldehyde binder compositions are provided which are useful in coated abrasive and wood engineering applications, in a time released fashion. The time released curable binder compositions include a urea formaldehyde resin and an aryl phosphite in varying concentrations. The curable binder compositions of the present invention provide desirable working times and faster curing times tinder ambient or near ambient conditions.Type: GrantFiled: June 24, 2004Date of Patent: August 28, 2007Assignee: Hexion Specialty Chemicals, Inc.Inventor: Jimmy Pingao Chen
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Patent number: 7176252Abstract: A solid phosphite composite, having at least a portion in amorphous form, which includes at least one, preferably two or more phosphite antioxidants or alternatively at least one phosphite and at least one other polymer additive. The phosphites, at least one of which can initially be a liquid, are generally uniformly distributed since they are melt blended. A desired class of phosphites are the bis(arylalkylphenyl)pentaerythritol diphosphites, at least a portion of which is in amorphous form.Type: GrantFiled: February 13, 2004Date of Patent: February 13, 2007Assignee: Dover Chemical CorporationInventors: Donald R. Stevenson, Satyan Kodali, Carroll W. Larke
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Patent number: 7157511Abstract: The whiteness and stability after processing of a polyolefin have been found to be improved upon the addition of a combination of at least one high activity phosphite and at least one hydrolytically stable phosphite.Type: GrantFiled: November 21, 2003Date of Patent: January 2, 2007Inventors: Rex L. Bobsein, Bryan E. Hauger, William R. Coutant, John Rathman
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Patent number: 7067569Abstract: The invention relates to a synergistic mixture comprising a) at least one compound selected from the group consisting of the phosphites of the formula (I) to (V), of the phosphonites of the formulae (VI) to (IX) and (XV), of the di/oligophosphonites of the formulae (X) and (XI) and of the phosphinites of the formulae (XII) to (XIV), and b) at least one compound selected from the group consisting of the phosphanes of the formula (XVI), the di/oligophosphanes of the formulae (XVII) and (XVIII), and of the cyclophosphanes of the formula (XIX), and also to a process for stabilizing polymers with respect to thermooxidative degradation by addition and incorporation of a synergistic mixture of this type.Type: GrantFiled: July 13, 2001Date of Patent: June 27, 2006Assignee: Clariant Finance (BVI) LimitedInventor: Peter Staniek
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Patent number: 7067570Abstract: A one-part polysiloxane composition comprising a branched organopolysiloxane with vinyl groups bonded to silicon atoms, an organohydrogenpolysiloxane with at least two hydrogen atoms bonded to molecular chain terminal silicon atoms within each molecule, and a platinum based catalyst, together with an additional phosphite triester and an organic peroxide, is resistant to increases in viscosity, and does not gel, even on extended storage at room temperature. Even after storage, the characteristics of the cured gel product are unchanged. Accordingly, a composition of the present invention offers excellent long term storage stability at room temperature.Type: GrantFiled: December 9, 2003Date of Patent: June 27, 2006Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masayuki Ikeno, Miyuki Tanaka, Kazuyasu Sato
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Patent number: 7029759Abstract: The invention provides a film that includes chloride-containing vinyl polymer and a stabilizer component, wherein the film has a 96-hour Volatile Organic Compound Emission Factor of no more than 1,000 ?g/m2/hour. The invention also provides a film that includes vinyl chloride polymer and a stabilizer component comprising a stabilizer and a diluent, wherein the diluent comprises a monohydric alcohol having 12 or more carbon atoms. Also described are methods of stabilizing a chloride-containing vinyl polymer film, a system for providing a low VOC releasing chloride containing vinyl polymer film, and methods of printing a chloride-containing vinyl polymer film.Type: GrantFiled: September 30, 2002Date of Patent: April 18, 2006Assignee: OMNOVA Solutions Inc.Inventors: Robert T. Sobieski, Daniel C. Gottschalk
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Patent number: 6995200Abstract: The present invention relates to a stabilizer composition comprising a) at least one sterically hindered phenol, b) at least one phosphorus-containing secondary antioxidant, and c) at least one Leucine compound, wherein the weight ratio of component (a) to component (b) to component (c) is from 1:5:3 to 1:0,5:0,1 for the stabilization of polyolefine-based thermoplastic polymers against degradation, crosslinking and/or discoloration due to the exposure to heat and/or light, especially in the presence of oxygen.Type: GrantFiled: February 20, 2002Date of Patent: February 7, 2006Assignee: Clariant Finance (BVI) LimitedInventor: Christoph Kröhnke
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Patent number: 6992124Abstract: The present invention relates to a synergistic additives mixture for producing calendered polyolefin articles, comprising A) at least one component from the group of peroxide-destroying phosphorus or sulfur compounds, B) at least one component from the group of phenolic antioxidants, C) at least one component from the group of sterically hindered amines, and D) if desired, further additives. Using this additive mixture prevents sticking to the hot roll surfaces and reduces the degradation of the polymer.Type: GrantFiled: February 3, 1999Date of Patent: January 31, 2006Assignee: Clariant GmbHInventors: Christian Wick, Gerhard Pfahler, Alexander Lichtblau
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Patent number: 6964746Abstract: The invention relates to mixtures of phosphonite (component A) and/or an ester and/or salt of a long-chain fatty acid (component B), and/or a carboxylic ester, and/or carboxylic amide (component C), and also to their use in polyamides or in polyesters.Type: GrantFiled: June 12, 2003Date of Patent: November 15, 2005Assignee: Clariant GmbHInventors: Elke Schlosser, Wolfgang Wanzke, Christian Lechner
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Patent number: 6960623Abstract: A thermoplastic molding composition especially suitable for preparing extruded articles is disclosed. The composition contains polycarbonate, a fatty acid ester and a triazine conforming to formula (I) wherein R1, R2, R3 and R4 independently one of the others is selected from the group consisting of C1-C8-alkyl, halogen and —CN, and where R5 is H or C1-C20-alkyl.Type: GrantFiled: May 28, 2001Date of Patent: November 1, 2005Assignee: Bayer AktiengesellschaftInventors: Rüdiger Gorny, Siegfried Anders, Wolfgang Nising
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Patent number: 6930137Abstract: An improved method of manufacturing blown polyolefin films with increased bubble stability and higher blown film production rates is disclosed. A method in which the amounts and ratios of known antioxidant polymer film additives (phosphites and phenolics) are controlled to provide limited long chain branching (LCB) and greater rheological breadth in a polyethylene melt to improve both processing characteristics and mechanical properties in the resulting film.Type: GrantFiled: May 29, 2003Date of Patent: August 16, 2005Assignee: Fina Technology, Inc.Inventors: Michael McLeod, Nguong van Nguyen, Gerhard Guenther, Tim J. Coffy, Rodolfo Mier Martinez
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Patent number: 6887926Abstract: A composition, and a method of using the composition, are described which composition comprising: (A) at least one chlorinated polyvinyl chloride or mixture of at least one polyvinyl-chloride and at least one chlorinated polyvinyl-chloride thereof; (B) at least one volatile organic liquid which is a solvent for the polymer of (A); and (C) a stabilizer comprising (i) an organophosphite compound, at least one hindered phenol, at least one of an organotin compound or mixtures thereof, and (ii) at least one metal-containing carbonate salt. The composition and methods of the present invention act to retard the loss of chlorine from the resins of the adhesive compositions and to absorb or otherwise inactive any lost chlorine. The compositions of the invention are useful in a variety of applications including use as adhesives, cements (including solvent cements) glues or pastes for holding together materials by surface attachment, and as sealants which are load-bearing elastic jointing and insulating materials.Type: GrantFiled: November 15, 2002Date of Patent: May 3, 2005Assignee: Oatey Co.Inventors: Amrit K. Parhar, Charles N. Bush
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Patent number: 6872764Abstract: Certain essentially phenol antioxidant-free stabilizer systems that comprise either a binary hindered amine/hydroxylamine or nitrone or amine oxide or benzofuranone system or a ternary hindered amine/hydroxylamine or nitrone or amine oxide or benzofuranone/organic phosphite or phosphonite system are especially effective towards protecting polyolefins against the deleterious effects of gamma irradiation. Polyolefin articles such as medical packaging, hospital garments, draperies, woven and non-woven fiber products, surgery utensils, blow-molded I.V. bottles, hypodermic syringes, needle shields, laboratory ware such as trays, funnels, Petri dishes and filters, and hygiene related articles may be sterilized with gamma irradiation and are stabilized according to the present invention.Type: GrantFiled: February 24, 2003Date of Patent: March 29, 2005Assignee: Ciba Specialty Chemicals CorporationInventor: Roswell E. King, III
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Patent number: 6855758Abstract: The invention relates to transparent, biaxially oriented and heat-set films having one or more layers and compris, as main constituent, at least one crystallizable thermoplastic, in particular a polyester, and also comprise at least one hydrolysis stabilizer. The hydrolysis stabilizer is preferably a phenolic compound, an oxazoline, and/or a monomeric or polymeric carbodiimide, where appropriate combined with an organic phosphite. It is preferably added in the form of a masterbatch. The film exhibits low longitudinal and transverse shrinkage. On exposure to moisture and heat it shows practically no embrittlement and retains its ultimate tensile strength. The additional functionality is preferably that the film has been made UV-resistant, or flame-retardant, or on one side or on both sides has been coated, or is sealable, and/or has been corona- or flame-treated.Type: GrantFiled: June 15, 2001Date of Patent: February 15, 2005Assignee: Mitsubishi Polyester Film GmbHInventors: Ursula Murschall, Ulrich Kern, Thorsten Kiehne, Harald Hessberger
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Patent number: 6843948Abstract: A vinylidene fluoride resin composition which is stable to heat at molding temperatures and is free from foaming and coloration, and molded products made by forming the vinylidene fluoride resin composition are provided. The vinylidene fluoride resin composition may comprise 100 parts by weight of a vinylidene fluoride homopolymer; 2-20 parts by weight of a polyester plasticizer; 0.01-0.5 parts by weight of a phosphite compound; and a phenol compound.Type: GrantFiled: October 8, 2002Date of Patent: January 18, 2005Assignee: Kureha Chemical Industry Co., Ltd.Inventors: Seiichi Ohira, Kazuyuki Munakata, Toshiya Mizuno, Nobuyuki Masumura
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Patent number: 6787066Abstract: The present invention is a stabilizing system for improving the melt viscosity of polyolefin resin during fiber processing. The addition of a liquid phosphite melt processing stabilizer to polypropylene homopolymer powder improves processing stability during spinning. The present invention covers spraying the liquid phosphite onto the powder along with octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate which is applied via mineral oil solution in a steamer.Type: GrantFiled: November 16, 2001Date of Patent: September 7, 2004Assignee: Sunoco Inc (R&M)Inventors: Kimberly Miller McLoughlin, Edwin B. Townsend, Victor M. DiNardo
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Patent number: 6774170Abstract: A heat stabilizing composition for polyolefins comprises an oxidized, non-cationized, non-silylated sulfur black pigment, a hindered phenolic antioxidant a sulfur-containing secondary stabilizer, each in stabilizing amount, and a hindered amine. The heat stabilizing composition yields polyolefin compounds and articles having improved long term heat aging stability. Preferably, the sulfur black pigment is treated by washing, to thereby reduce the concentration of soluble sodium salts.Type: GrantFiled: December 7, 2001Date of Patent: August 10, 2004Assignee: Clariant Finance (BVI) LimitedInventor: Joseph R. Webster
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Patent number: 6767941Abstract: A halogen-free, flame-retardant composition includes (1) organic phosphorus compound (A) and (1′) melamine or a compound derived from melamine (B); or (2) a melamine-phosphorus compound (AB). The composition also includes and olefin polymer and from 0.1-30 wt % based on the olefin polymer, of a compound containing acid, acid anhydride or epoxy groups. The flame-retardant composition may included in a polycondensate composition which incorporate the flame-retardant composition is substantially shortened.Type: GrantFiled: November 27, 2001Date of Patent: July 27, 2004Assignee: DSM IP Assets B.V.Inventors: Pieter A. Van Der Spek, Martinus L. M. Bos, William A. C. Roovers, Marnix Van Gurp, Henrica N. A. M. Menting
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Patent number: 6753363Abstract: A polyacetal resin composition of high flame retardancy and stability comprises a polyacetal resin, a flame retardant, and a basic nitrogen-containing compound (urea, amidine, aminotriazine, hydrazine, derivatives thereof, amide, urethane). The flame retardant may comprise an aromatic compound reactive to formaldehyde and a phosphorus-containing compound (e.g., red phosphorus, organic phosphonates, organic phosphinates, ammonium polyphosphate, and other phosphoric acid salts, phosphates), and the aromatic compound may be a hydroxyl group and/or amino group-containing compound or an aromatic ring-containing resin (e.g., novolak resins, aralkyl resins, vinylphenol resins, aniline resins, aromatic nylon resins, polycarbonate resins, polyarylate resins, aromatic epoxy resins, aromatic polyether resins). The ratio of the phosphorus-containing compound per 100 parts by weight of the aromatic compound is 1 to 500 parts by weight.Type: GrantFiled: March 8, 2001Date of Patent: June 22, 2004Assignee: Polyplastics Co., Ltd.Inventor: Hatsuhiko Harashina
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Patent number: 6689827Abstract: The invention relates to transparent, impact-resistant thermoplastic molding materials containing A) a matrix consisting of at least two different mixture components, B) an impact-resistance modifier, C) an additive, essentially consisting of c1) at least one 2,6-disubstituted phenol, and c21) at least one organic phosphite of general formula (I) P(OR1)n(OAr)3−n, c22 at least one organic phosphite of general formula (IIa) and/or (IIb), or c23) a mixture of compounds in accordance with c21) and c22).Type: GrantFiled: September 14, 1999Date of Patent: February 10, 2004Assignee: BASF AktiengesellschaftInventors: Christian Schade, Rainer Neumann, Claudia Messinger, Klaus Benker, Armin Kurps
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Patent number: 6664317Abstract: Certain essentially phenol antioxidant-free stabilizer systems that comprise either a binary hindered amine/hydroxylamine or nitrone or amine oxide or benzofuranone system or a ternary hindered amine/hydroxylamine or nitrone or amine oxide or benzofuranone/organic phosphite or phosphonite system are especially effective towards protecting polyolefins against the deleterious effects of gamma irradiation. Polyolefin articles such as medical packaging, hospital garments, draperies, woven and non-woven fiber products, surgery utensils, blow-molded I.V. bottles, hypodermic syringes, needle shields, laboratory ware such as trays, funnels, Petri dishes and filters, and hygiene related articles may be sterilized with gamma irradiation and are stabilized according to the present invention.Type: GrantFiled: February 14, 2001Date of Patent: December 16, 2003Assignee: Ciba Specialty Chemicals CorporationInventor: Roswell E. King, III
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Patent number: 6638997Abstract: Hindered amines substituted on the N-atom with an —O—E—OH moiety are particularly effective in stabilizing polyolefin and automotive coating compositions against the deleterious effects of oxidative, thermal and actinic radiation where the presence of the OH group on the compounds adds important properties not attainable by the use of normal —O—E moieties.Type: GrantFiled: September 27, 2001Date of Patent: October 28, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: James P. Galbo, Gerald A. Capocci, Nancy N. Cliff, Robert E. Detlefsen, Michael P. DiFazio, Ramanathan Ravichandran, Peter Solera
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Patent number: 6632864Abstract: A method of using an extrudable thermoplastic compositions that contains a mixture of benzotriazoles is disclosed. The composition is suitable for producing sheets having improved surface quality.Type: GrantFiled: October 23, 2001Date of Patent: October 14, 2003Assignee: Bayer AktiengesellschaftInventors: Rüdiger Gorny, Siegfried Anders, Wolfgang Nising
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Patent number: 6612351Abstract: A pneumatic rubber tire is provided having inner and outer air retention quasi envelopes which individually substantially envelop the tire air chamber and which are comprised of a first inner quasi envelope as an integral innerliner and a second outer quasi envelope as a combination of sidewalls and tread. Such pneumatic tire is of a relatively conventional open toroidal shape. The innerliner and the sidewall-tread combination are termed as being quasi envelopes in a sense that a rigid rim, onto which the tire is to be mounted and inflated, is used to complete the closure of the tire's air chamber envelope.Type: GrantFiled: February 5, 2001Date of Patent: September 2, 2003Assignee: The Goodyear Tire & Rubber CompanyInventor: David John Zanzig
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Patent number: 6583210Abstract: The present invention relates to a tire with a carbon black-containing, black-colored, circumferential tread of a cap/base construction, wherein said tread cap has a lug and groove configuration and wherein the outer surface of a major portion of said grooves are designed to be ground contacting, and a co-extruded thin outer non-carbon black-containing rubber layer of a non-black color wherein said outer rubber layer is integral with and circumferentially extends from the axial outer edge of said tread cap to include at least of a visible surface of at least one groove in said tread cap. In one aspect, said tread contains a pair of black colored, carbon black reinforced, tread miniwings which extend from the axial outer edge of the tread over a portion of the tire sidewall, wherein said thin outer rubber layer joins said miniwing and wherein said tread cap, tread base, tread miniwings and thin outer layer are co-extruded, co-cured and therefore integral with each other.Type: GrantFiled: February 1, 2001Date of Patent: June 24, 2003Assignee: The Goodyear Tire & Rubber CompanyInventors: David John Zanzig, George Frank Balogh, Paul Harry Sandstrom
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Patent number: 6545072Abstract: Disclosed is a film or sheet of a polypropylene resin composition comprising the following components (A), (B) and (C): (A) 100 parts by weight of a polypropylene resin, (B) from 0.001 to 1 part by weight of a phenolic antioxidant such as 1,3,5-tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate or the like, and (C) from 0.05 to 5 parts by weight of a hindered amine-based light stabilizer. Provided are filmy or sheet moldings of the polypropylene resin composition which color little even when stored indoors at relatively high temperatures; and also the polypropylene resin composition for the moldings.Type: GrantFiled: July 2, 2001Date of Patent: April 8, 2003Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Satoshi Tamura, Yutaka Azuma
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Patent number: 6541547Abstract: Polyolefin mouldings which have excellent stability on permanent contact with extracting media comprise, as stabilizers, a selected mixture comprising an organic phosphite or phosphonite and a specially selected group of sterically hindered phenols or a certain group of sterically hindered amines. In addition, a selected three-component mixture comprising a phosphite or phosphonite, a phenolic antioxidant and a certain group of sterically hindered amines is particularly suitable as stabilizer for polyolefin moldings which are in permanent contact with extracting media.Type: GrantFiled: September 9, 1996Date of Patent: April 1, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Thomas Schmutz, Erich Kramer, Hans Zweifel, Bruno Rotzinger