Five-membered Chalcogen Ring Patents (Class 524/111)
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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: 6984428Abstract: Pressure sensitive adhesive strip which is detachable without destruction and without leaving a residue.Type: GrantFiled: November 2, 2001Date of Patent: January 10, 2006Assignee: tesa AktiengesellschaftInventors: Thorsten Krawinkel, Kerstin Franck, Bernd Lühmann
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Patent number: 6964988Abstract: The invention relates to a thermoplastic composition comprising at least a copolymer of ethylene and an ?,?-unsaturated C3-C8 carboxylic acid, from about 10 to 99.9% neutralized with Lithium, and at least from about 0.01 wt % to about 2 wt % of a migrating antistatic agent. The invention also relates to films, sheet and molded articles comprising the above composition. The composition, film, sheet or molded article of the invention show good antistatic properties and preferably have a surface resistivity equal or less than 10E11. The composition, film, sheet or molded article of the invention can in particular be used as a protective transparent coating or layer on abrasion and scratch-exposed objects.Type: GrantFiled: October 8, 2002Date of Patent: November 15, 2005Assignee: E. I. du Pont de Nemours and CompanyInventor: Karlheinz Hausmann
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Patent number: 6899952Abstract: A polysulfone-based resin solution composition which is stable, contains no undissolved resin left in the liquid, shows neither thickening nor gelation, gives a smooth coating layer when spread on a base film and does not generate any harmful component, and a laminate which is produced by spreading and drying the same polysulfone-based resin solution composition on a base film surface. More specifically, a polysulfone-based resin solution composition prepared by dissolving at least one type of polysulfone-based resin in a mixed solvent composed of a lactone (A) or ketone (B) having an aromatic ring, and cycloketone (C) and aliphatic ketone (D) having a boiling point of 150° C. or lower, and a laminate which is produced by spreading and drying the same polysulfone-based resin solution composition on a base film surface.Type: GrantFiled: May 16, 2003Date of Patent: May 31, 2005Assignee: Daicel Chemical Industries, Ltd.Inventor: Kiyoshi Shimizu
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Patent number: 6890978Abstract: An aromatic monovinyl resin composition comprising (a) a polymer comprising an aromatic monovinyl monomer and having a weight average molecular weight of 150,000-700,000 and (b) a 3-arylbenzofuranone, the amount of the 3-arylbenzofuranone being 0.006-0.5% by weight based on the weight of the polymer and the residual amount of the aromatic monovinyl monomer in the aromatic monovinyl resin composition being not more than 100 ppm. According to the present invention, it becomes possible to provide an aromatic monovinyl resin composition which is excellent in heat stability, gives molded products of good color tone, develops little odor and is excellent in moldability.Type: GrantFiled: August 6, 2001Date of Patent: May 10, 2005Assignee: A&M Styrene Co., Ltd.Inventors: Toshiharu Kawasaki, Takashi Iwamoto
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Patent number: 6881774Abstract: Synthetic polymers which possess outstanding stability to oxidative, thermal or light-induced degradation comprise as stabilizer at least a compound of the formula I wherein R1 and R2 are each independently of one another hydrogen or C1-C8alkyl, R3 and R4 are each independently of one another C1-C12alkyl, and R5 is C1-C7alkyl.Type: GrantFiled: September 9, 2002Date of Patent: April 19, 2005Assignee: Ciba Specialty Chemicals Corp.Inventors: Kerstin Schrinner, Pascal Xanthopoulos
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Patent number: 6869986Abstract: Ink composition, in particular for continuous deflected ink jet printing comprising: a binder one or several dyes and/or pigments, and a solvent in which the said solvent comprises at least 10% by weight—in relation to the total weight of the ink—of 1,3-dioxolane, at least 5% by weight of one or several other organic compounds that can dissociate the ionisable species in the ink, and less than 5% water.Type: GrantFiled: July 28, 2000Date of Patent: March 22, 2005Assignee: Imaje S.A.Inventors: Vincent Millot, Pierre De Saint Romain
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Patent number: 6869994Abstract: A carboxyl group-containing polymer composition comprising 100 parts by weight of a carboxyl group-containing polymer (A) prepared by copolymerizing an ?,?-unsaturated carboxylic acid (a) with a compound (b) having at least two ethylenic unsaturated groups; and 0.01 to 20 parts by weight of at least one compound (B) selected from an ester (c) obtained from a polyhydric alcohol and a fatty acid, and an alkylene oxide adduct of an ester (d) obtained from a polyhydric alcohol and a fatty acid. Since the carboxyl group-containing polymer composition is excellent in the solubility in water and gives the aqueous solution excellent thickening property, the polymer composition can be suitably used as a thickener for various aqueous solutions.Type: GrantFiled: June 8, 2000Date of Patent: March 22, 2005Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Masato Fujikake, Shigeki Hamamoto, Tomoki Kawakita, Masatoyo Yoshinaka
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Patent number: 6803397Abstract: A thermoplastic molding composition containing a (co)polymer of vinylcyclohexane and a stabilizer system is disclosed. The stabilizer system contains lactone, sterically hindered phenol and a phosphite compound. The composition that is characterized by its improved thermal stability is suitable for the preparation of molded articles, including optical data carriers.Type: GrantFiled: August 16, 2001Date of Patent: October 12, 2004Assignee: Bayer AktiengesellschaftInventors: Volker Wege, Konstadinos Douzinas, Friedrich-Karl Bruder
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Publication number: 20040198876Abstract: A rubber composition comprises 0.1-10 parts by mass of at least one of non-ionic surfactants having a special structure based on 100 parts by mass of at least one rubber component selected from natural rubber and synthetic diene rubbers.Type: ApplicationFiled: March 26, 2004Publication date: October 7, 2004Applicant: BRIDGESTONE CORPORATIONInventors: Fumihiro Shiraishi, Norikazu Otoyama, Daisuke Nohara
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Publication number: 20040110876Abstract: A description is given of powder coating compositions comprising a) an organic film-forming binder and b) as stabilizer at least one compound of the benzofuran-2-one type. Powder coating compositions stabilized in this way reduce the discoloration of coatings during thermal curing, especially gas oven curing.Type: ApplicationFiled: October 22, 2003Publication date: June 10, 2004Inventors: Hugh Stephen Laver, Peter Nesvadba
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Patent number: 6719925Abstract: The present invention relates to novel compounds of the naphthopyran type with a fused heterocycle in the 5,6-position. These compounds have formula (I) or (II) given below: These compounds (I) or (II) have valuable photochromic properties. The invention further relates to their preparation, to their applications as photochromic substances, and to the (co)polymer compositions and matrices containing them.Type: GrantFiled: November 3, 2000Date of Patent: April 13, 2004Assignee: Corning SASInventors: Olivier Breyne, You-Ping Chan, Patrick Jean
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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: 6656383Abstract: An oxygen scavenging composition or concentrate of a carrier, such as a polymer, which is permeable to both oxygen and water or water vapor and an oxygen scavenging compound of an organic compound or salt thereof dispersed relatively uniformly throughout the polymer in an amount effective to act as an oxygen scavenger. The oxygen scavenging compound may be an ascorbate compound or a polycarboxylic or salicylic acid chelate or complex of a transition metal or a salt thereof. The oxygen scavenging composition is activated for scavenging oxygen by contact with water or water vapor which permeates into or through the carrier. A catalyzing agent is included in an amount sufficient to increase the rate of oxygen scavenging by the ascorbate compound. The oxygen scavenging compound may be added to the composition in a dry state, and is inactive until activated by contact with water or water vapor.Type: GrantFiled: January 16, 1997Date of Patent: December 2, 2003Assignee: W. R. Grace & Co.-Conn.Inventors: Bruce D. Zenner, Charles S. Benedict
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Publication number: 20030212170Abstract: The invention describes novel compounds of the formula (I) wherein the general symbols are as defined in claim (1) and R1 is an aromatic radical with electron withdrawing substituents, as stabilizers for protecting organic materials, in particular polymers and lubricants, against oxidative, thermal or light-induced degradation and as scavengers for oxidized developer in color photographic material.Type: ApplicationFiled: August 12, 2002Publication date: November 13, 2003Inventors: Michael Tinkl, Oliver Dosenbach, Peter Nesvadba, Martin Wolff, Bruno Rotzinger, Dietmar Mader
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Patent number: 6635692Abstract: A range of extruded polymers incorporating synthetic furanones was manufactured and field tested. Polymers incorporating furanones showed excellent antifouling efficacy and significantly reduced fouling for more than 100 days. The present inventors have developed polymers that release commercial short-lived biocides or analogues of antifouling compounds isolated from marine algae. A range of polymers incorporating either the commercial isothiazolone Sea-Nine 211™ or a halogenated furanone were effective antifouling treatments in laboratory and field trials. The efficacy of the polymers was dependant on polymer type and the initial concentration of the antifouling compound. The polymers can be extruded as filaments that can be woven into netting or extruded or molding for other applications.Type: GrantFiled: April 20, 2001Date of Patent: October 21, 2003Assignee: Aquaculture CRC LimitedInventors: Gregor Bruce Yeo Christie, Victor Christov, Peter Canisius De Nys, Peter Steinberg, Stephen Hodson
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Publication number: 20030166750Abstract: A method for producing polymers which are anhydride modifications of polymers containing hydroxyl groups, such as polyvinyl acetal polymers. Such modified polymers are useful as binders for photosensitive compositions used to prepare photographic elements such as lithographic printing plates, color proofing films and photoresists. The binder is the reaction product of an intramolecular anhydride of an organic polycarboxylic acid with a polymer containing hydroxyl groups, and which does not contain other functional groups which are capable of reaction with acid anhydrides. The reaction is conducted in a solvent composition free of hydroxyl containing solvents such as methyl ethyl ketone and ethylene glycol monomethyl ether.Type: ApplicationFiled: January 10, 2003Publication date: September 4, 2003Inventors: Gabor I. Koletar, Major S. Dhillon, Mahfuzul Alam, Gerhard Sprintschnik, Stanley F. Wanat
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Patent number: 6613186Abstract: A pressurized aerosol solvent cement product and a method of using the same is disclosed. The aerosol solvent cement product includes an aerosol solvent cement composition disposed in a container. The aerosol solvent cement composition includes tetrahydrofuran, a thermoplastic resin soluble in tetrahydrofuran, a propellant, and a stabilizing composition.Type: GrantFiled: July 27, 2001Date of Patent: September 2, 2003Assignee: The Sherwin-Williams CompanyInventor: James J. Johnson
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Patent number: 6613821Abstract: Disclosed herein is a cloth treating agent comprising a tocopherol and at least one of a polyethylene oxide compound and a derivative thereof. The cloth treating agent permits the provision of a print which has sufficiently high color value and depth in color and can be prevented to the utmost from undergoing bleeding even when the amount of inks applied is great.Type: GrantFiled: October 4, 1999Date of Patent: September 2, 2003Assignee: Canon Kabushiki KaishaInventors: Mariko Suzuki, Shoji Koike
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Publication number: 20030109611Abstract: Synthetic polymers which possess outstanding stability to oxidative, thermal or light-induced degradation comprise as stabilizer at least a compound of the formula I 1Type: ApplicationFiled: September 9, 2002Publication date: June 12, 2003Inventors: Kerstin Schrinner, Pascal Xanthopoulos
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Patent number: 6569927Abstract: A composition is disclosed comprising: (A) a thermoplastic resin; and (B) a stabilizing amount of a blend of at least one sterically hindered phenol antioxidant, at least one aromatic amine and/or N,N′-substituted oxamide antioxidant, and at least one lactone antioxidant having a 3-phenylbenzofuran-2-one structure. A method is also disclosed for stabilizing a thermoplastic resin, wherein the method comprises adding thereto a stabilizing amount of a blend of at least one sterically hindered phenol antioxidant, at least one aromatic amines and/or N,N′-substituted oxamide antioxidant, and at least one lactone antioxidant having a 3-phenylbenzofuran-2-one structure.Type: GrantFiled: October 6, 2000Date of Patent: May 27, 2003Assignee: Uniroyal Chemical Company, Inc.Inventor: Michael E. Gelbin
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Publication number: 20030060543Abstract: The present invention provides additive packages for polyolefins The additive packages of the present invention comprise at least one non-phenolic antioxidant and a hindered amine light stabilizer. The additive packages may contain other additives as needed, and may optionally include an acid scavenger. Articles made from the resultant polymers, such as radiator surge tanks, exhibit enhanced stain and discoloration resistance upon exposure to high temperatures and harsh chemicals such as those experienced in “under the hood” spaces of modem automobiles.Type: ApplicationFiled: May 29, 2001Publication date: March 27, 2003Inventors: Steven David Seip, Sharon Edwards Thompson, Edwin B. Townsend
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Patent number: 6525118Abstract: A silica-filled, vulcanized elastomeric compound comprises 100 parts by weight of an elastomer; from about 5 to about 100 parts by weight of a reinforcing filler per 100 parts of elastomer, wherein the reinforcing fillers are selected from the group consisting of carbon black and silica filler; from 0 to about 20 percent by weight of a silane, based upon the weight of the silica filler; a cure agent; from about 0 to about 20 parts by weight of a processing aid selected from the group consisting of fatty acid esters of hydrogenated and non-hydrogenated C5 and C6 sugars; from about 0 to about 20 parts by weight of a processing aid selected from the group consisting of polyoxyethylene derivatives of fatty acid esters of hydrogenated and non-hydrogenated C5 and C6 sugars; from about 0 to about 40 parts by weight of an additional filler other than silica or carbon black, with the provisos that at least one of the processing aids or additional fillers are present; that if the processing aid is sorbitan monooleate,Type: GrantFiled: December 5, 1997Date of Patent: February 25, 2003Assignee: Bridgestone CorporationInventors: William L. Hergenrother, William M. Cole, James Oziomek
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Patent number: 6521681Abstract: Organic materials which possess outstanding stability to oxidative, thermal or light-induced degradation comprise as stabilizers at least one compound of the benzofuran-2-one type and at least one compound of the sterically hindered amine type.Type: GrantFiled: June 23, 1997Date of Patent: February 18, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Jürg Zingg, Jean-Roch Pauquet, Christoph Kröhnke
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Publication number: 20030013367Abstract: Disclosed herein is a cloth treating agent comprising a tocopherol and at least one of a polyethylene oxide compound and a derivative thereof. The cloth treating agent permits the provision of a print which has sufficiently high color value and depth in color and can be prevented to the utmost from undergoing bleeding even when the amount of inks applied is great.Type: ApplicationFiled: October 4, 1999Publication date: January 16, 2003Inventors: MARIKO SUZUKI, SHOJI KOIKE
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Patent number: 6486240Abstract: An asymmetric support membrane can be prepared by using a phase separation method. The method includes immersing a polymer solvent solution into water. The polymer solution is made by dissolving 15 to 35% by weight of the polymer into a solvent that lets the polymer solution become a gel at a temperature of 0 to 50° C. The solution is then allowed to gel and brought into a final membrane form in water for phase separation and formation of the asymmetric support membrane. The polymer may be poly(vinyl chloride), polyethersulfone, polyetherimide and polyamic(methylester). The solvent is &ggr;-butyrolactone alone as a major solvent or is a mixed solvent with N-methyl-2-pyrrolidone as a cosolvent. The asymmetric support membrane is a porous support membrane of a sponge form having open pores that are connected to one another with a narrow pore size distribution. Thus, the asymmetric support membrane has an improved permeance and mechanical strength.Type: GrantFiled: October 28, 1999Date of Patent: November 26, 2002Assignee: Korea Institute of Science and TechnologyInventors: Jong Ok Won, Yong Soo Kang, Hyun Chae Park, Un Young Kim, Seong Hyun Yoo
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Patent number: 6465555Abstract: Provided are a flame-retardant thermoplastic resin composition comprising 100 parts by weight of a resin mixture of (A) from 50 to 95% by weight of a polycarbonate resin and (B) from 5 to 50% by weight of a styrenic resin, from 0.1 to 10 parts by weight of (C) red phosphorus, and from 5 to 50 parts by weight of (D) talc, and its injection moldings. The composition comprising a polycarbonate resin and a styrenic resin is troubled little by red coloration with red phosphorus therein. The composition can be well molded into pale color or light color moldings. The color tone and the outward appearance of the moldings are both good, and the heat resistance, impact resistance, rigidity and even the flame retardancy of the moldings are much improved. In the composition, red phosphorus is preferably stabilized.Type: GrantFiled: October 1, 1999Date of Patent: October 15, 2002Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Akio Nodera, Naoki Mitsuta
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Patent number: 6444734Abstract: A silica-filled, vulcanized elastomeric compound comprises 100 parts by weight of an elastomer; from about 5 to about 100 parts by weight of a reinforcing filler per 100 parts of elastomer, wherein the reinforcing fillers are selected from the group consisting of carbon black and silica filler; from 0 to about 20 percent by weight of a silane, based upon the weight of the silica filler; a cure agent; from about 0 to about 20 parts by weight of a processing aid selected from the group consisting of fatty acid esters of hydrogenated and non-hydrogenated C5 and C6 sugars; from about 0 to about 20 parts by weight of a processing aid selected from the group consisting of polyoxyethylene derivatives of fatty acid esters of hydrogenated and non-hydrogenated C5 and C6 sugars; from about 0 to about 40 parts by weight of an additional filler other than silica or carbon black, with the provisos that at least one of the processing aids or additional fillers are present; that if the processing aid is sorbitan monooleate,Type: GrantFiled: November 28, 2000Date of Patent: September 3, 2002Inventors: William L. Hergenrother, William M. Cole, James Oziomek
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Patent number: 6441071Abstract: Improved polycarbonate resins are prepared comprising specific amounts of a cyanacrylic acid ester type UV absorber in combination with a synergistic phosphite type stabilizer and, optionally, a hindered phenol type stabilizer and/or a lactone type stabilizer. The polycarbonate compositions according to the invention can be used to prepare molded, shaped or otherwise fabricated articles having improved combinations of protection against UV radiation, color and color stability with reduced plate-out behavior during processing. The compositions are especially suitable for use in extrusion, blow molding, thermoforming, injection molding, injection blow molding, injection compression molding, film blow molding and foaming processes and provide improved parts or articles.Type: GrantFiled: August 8, 2000Date of Patent: August 27, 2002Assignee: Dow Global Technologies Inc.Inventor: Claude T. E. Van Nuffel
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Patent number: 6440206Abstract: The present invention is directed to a composition comprising a sorbitan ester of the formula I and a monoazo pigment. The present invention further encompasses a process for its preparation and its use as well as the use of the sorbitan ester I as additive to improve color strength and dispersion properties.Type: GrantFiled: September 19, 2000Date of Patent: August 27, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Greig Chisholm, Barry William Hay
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Patent number: 6420461Abstract: The present invention relates to novel compounds of the formula (III) in which the substituents are as defined in the description, to a process for their preparation and to mixtures with other compounds. The compounds of the formula (III) are suitable for stabilizing organic material against the effect of light and heat.Type: GrantFiled: November 12, 1999Date of Patent: July 16, 2002Assignee: Clariant GmbHInventors: Thomas Stährfeldt, Mathias Mehrer, Matthias Zäh, Gerhard Pfahler
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Patent number: 6391947Abstract: An ink for ink-jet recording is provided which contains a coloring material and an aqueous liquid medium for solving or dispersing the coloring material, the liquid medium having a lower critical consolute temperature (Tc) to cause phase separation at a temperature in the range of from 40 to 100° C. Ink-jet recording method and an ink-jet recording apparatus employing the above ink are also provided.Type: GrantFiled: June 14, 1996Date of Patent: May 21, 2002Assignee: Canon Kabushiki KaishaInventors: Hiromichi Noguchi, Yuko Suga, Katsuhiro Shirota, Akio Kashiwazaki, Aya Takaide
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Patent number: 6384120Abstract: A synthetic resin film for agriculture suited as a covering material for greenhouses or the like, which shows good anti-clouding and anti-fogging properties immediately after being spread and for longer period than 2 years. The synthetic resin film for agriculture is obtained by using (a) an ester of sorbitan with a higher fatty acid mainly containing 24 to 34 carbon atoms (montanic acid wax), an ester of glycerin with montanic acid wax and/or alkylene oxide adducts thereto and/or an ester of polyoxyalkylene with montanic acid wax as an anti-clouding agent, and (b) a fluorine-containing surfactant as an anti-fogging agent, kneading them with a film-forming resin such as vinyl chloride resin, polyethylene, ethylene/vinyl acetate copolymer, and forming it into a film.Type: GrantFiled: September 14, 1999Date of Patent: May 7, 2002Assignee: Clariant Finance (BVI) LimitedInventors: Takuya Hoga, Hiroshi Ohsawa, Masaki Nakamura
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Patent number: 6369138Abstract: A processable rubber stock is produced by the preparation of a silica-filled, vulcanized elastomeric compound comprising mixing an elastomer with an amorphous silica filler, a processing aid comprising fatty acid ester of a polyol, optionally an additional mineral filler, and a cure agent. The elastomer is preferably a diene monomer homopolymer or a copolymer of at least one diene and at least one monovinyl aromatic monomer. By effecting vulcanization, a vulcanized elastomeric compound is produced containing good physical properties for use as tread stock for a pneumatic tire.Type: GrantFiled: July 11, 1997Date of Patent: April 9, 2002Assignee: Bridgestone CorporationInventors: William L. Hergenrother, William M. Cole
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Patent number: 6359148Abstract: The invention described novel compounds of formula wherein the general symbols are as defined in claim 1, as stabilisers for protecting organic materials, in particular polymers and lubricants, against thermal, oxidative or light-induced degradation.Type: GrantFiled: July 23, 1998Date of Patent: March 19, 2002Inventors: Peter Nesvadba, Samuel Evans, Christoph Kröhnke, Jürg Zingg
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Patent number: 6346630Abstract: The invention described novel compounds of formula wherein the general symbols are as defined in claim 1, as stabilizers for protecting organic materials, in particular polymers and lubricants, against thermal, oxidative or light-induced degradation.Type: GrantFiled: April 20, 2000Date of Patent: February 12, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Peter Nesvadba, Samuel Evans, Christoph Kröhnke, Jürg Zingg
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Patent number: 6346562Abstract: The invention relates to cross-linkable mixtures and a method for the production and utilization thereof.Type: GrantFiled: October 23, 2000Date of Patent: February 12, 2002Assignee: General Electric CompanyInventors: Rolf Haselhorst, Ralf Karch, Klaus Zimmermann
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Publication number: 20010041758Abstract: A description is given of powder coating compositions comprising a) an organic film-forming binder and b) as stabilizer at least one compound of the benzofuran-2-one type. Powder coating compositions stabilized in this way reduce the discoloration of coatings during thermal curing, especially gas oven curing.Type: ApplicationFiled: June 1, 2001Publication date: November 15, 2001Inventors: Hugh Stephen Laver, Peter Nesvadba
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Patent number: 6274660Abstract: The present invention relates to a coating composition featuring increased solids contents, which comprises at least one polyol I obtainable by subjecting at least one oligomer of the general formula I R1R2C═[═CH—R—CH═]n—CR3R4 (I) in which R=—(—CH2—)m—, in which the index m is an integer from 2 to 6, or in which X=—CH2— or an oxygen atom R1,R2,R3 and R4 independently of one another=hydrogen atoms or alkyl; and the index n=an integer from 1 to 15; to hydroformylation and reducing the resultant aldehyde-functional products I to give the polyols I, which, if desired, are subjected to partial or complete hydrogenation.Type: GrantFiled: February 3, 1999Date of Patent: August 14, 2001Assignee: BASF Coatings AGInventors: Edgar Zeller, Peter Schwab, Peter-Heinz Rink, Hubert Baumgart, Edeltraud Hagemeister, Thomas Farwick
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Publication number: 20010009939Abstract: A description is given of powder coating compositions comprising a) an organic film-forming binder and b) as stabilizer at least one compound of the benzofuran-2-one type. Powder coating compositions stabilized in this way reduce the discoloration of coatings during thermal curing, especially gas oven curing.Type: ApplicationFiled: February 2, 1998Publication date: July 26, 2001Inventors: HUGH STEPHEN LAVER, PETER NESVADBA
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Publication number: 20010009940Abstract: A processable rubber stock is produced by the preparation of a silica-filled, vulcanized elastomeric compound comprising mixing an elastomer with an amorphous silica filler, a processing aid comprising fatty acid ester of a polyol, optionally an additional mineral filler, and a cure agent. The elastomer is preferably a diene monomer homopolymer or a copolymer of at least one diene and at least one monovinyl aromatic monomer. By effecting vulcanization, a vulcanized elastomeric compound is produced containing good physical properties for use as tread stock for a pneumatic tire.Type: ApplicationFiled: July 11, 1997Publication date: July 26, 2001Inventors: WILLIAM L. HERGENROTHER, WILLIAM M. COLE
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Patent number: 6228908Abstract: Diene polymers or copolymers having improved balance between raw polymer viscosity and mixed compound viscosity, useful in tire tread compositions having highly balanced wet traction, rolling resistance, and traction in ice and snow, and fracture properties in the cured and white carbon reinforced states are provided. These diene polymers or copolymers comprise a mixture of diene polymer or copolymer chains containing carbon-tin bonds in the main polymer or copolymer chains and diene polymer or copolymer chains containing terminals derived from hydrocarboxysilane compounds. The diene polymer or copolymers are prepared by first coupling a portion of the living diene polymer or copolymer chains obtained by anionic polymerization using a tin polyhalide coupling agent and then terminating the remaining living diene polymer or copolymer chains using hydrocarboxysilane compounds.Type: GrantFiled: January 12, 1999Date of Patent: May 8, 2001Assignee: Bridgestone CorporationInventors: Hideo Takeichi, Daniel F. Graves, Sunil B. Sarkar, David F. Lawson, William L. Hergenrother, William M. Cole, James Oziomek
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Patent number: 6225382Abstract: A fluorine-containing resin composition comprising at least one fluorine-containing polycyclic compound (A) selected from the group consisting of the following compounds (A1), (A2) and (A3), and a polymer (B) having a fluorine-containing alicyclic structure: (A1) a fluorine-containing non-condensed polycyclic compound having at least two fluorine-containing rings bonded by a bond containing at least one member selected from the group consisting of a triazine ring, an oxygen atom, a sulfur atom, a phosphorus atom and a metal atom, each of said fluorine-containing rings being a carbon ring or a heterocyclic ring, (A2) a fluorine-containing non-condensed polycyclic compound having at least three fluorine-containing rings bonded directly or by a bond containing a carbon atom, each of said fluorine-containing rings being a carbon ring or a heterocyclic ring, (A3) a fluorine-containing condensed polycyclic compound which is a condensed polycyclic compound composed of at least three carbon rings or heterocyclic rType: GrantFiled: September 23, 1998Date of Patent: May 1, 2001Assignee: Asahi Glass Company Ltd.Inventors: Ikuo Matsukura, Shunsuke Yokotsuka, Katsumi Suzuki
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Patent number: 6224791Abstract: This invention discloses synergistic blends of phosphates and lactones having a base structure of 3-phenylbenzofuran-2-one with or without other additives as stabilizers for polymers, particularly during melt processing as evidenced by changes in melt flow and in some instances, resistance to yellowing.Type: GrantFiled: January 13, 2000Date of Patent: May 1, 2001Assignee: Dover Chemical CorporationInventors: Don R. Stevenson, Daryl L. Stein
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Patent number: 6197853Abstract: A thermoplastic polycarbonate molding composition having improved resistance to gamma radiation-induced yellowing is disclosed. Particularly suitable for the manufacture of devices geared for medical applications, the composition contains an additive amount of a stabilizing compound conforming structurally to where R1 denotes a C1-30-alkyl group and R2 denotes an aryl radical.Type: GrantFiled: July 1, 1999Date of Patent: March 6, 2001Assignee: Bayer CorporationInventors: Daniel H. Bolton, Sivaram Krishnan, David M. Derikart, James B. Johnson
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Patent number: 6197854Abstract: A thermoplastic polycarbonate molding composition having improved resistance to gamma radiation-induced yellowing is disclosed. Particularly suitable for the manufacture of devices targeted for medical applications, the composition contains additive amounts of a first stabilizing compound conforming structurally to wherein in the embodiment where n is 1, R1 is an unsubstituted or substituted carbocyclic or heterocyclic aromatic ring system, and where in the embodiment where n is 2, R1 is unsubstituted or C1-4-alkyl or hydroxy substituted phenylene or naphthylene, and R2, R3, R4 and R5 independently of one another are hydrogen, C1-25-alkyl groups or phenyl. and a saccharine compound.Type: GrantFiled: April 3, 2000Date of Patent: March 6, 2001Assignees: Bayer Corporation, Bayer AktiengesellschaftInventors: Sivaram Krishnan, Wolfgang Ebert
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Patent number: 6140397Abstract: Elastomers that have excellent stability towards oxidative, light- or ozone-induced degradation comprise as stabilizers at least one compound of the benzofuran-2-one type.Type: GrantFiled: January 13, 1999Date of Patent: October 31, 2000Assignee: Ciba Specialty Chemicals CorporationInventors: Hans-Rudolf Meier, Gerrit Knobloch, Peter Nesvadba
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Patent number: 6103794Abstract: A description is given of powder coating compositions comprising a) an organic film-forming binder and b) as stabilizer at least one compound of formula I ##STR1## wherein the general symbols are as defined in claim 1. Using powder coating compositions stabilized in this manner reduces the discoloration of the coatings during heat-cures, in particular during gas furnace cures.Type: GrantFiled: August 13, 1998Date of Patent: August 15, 2000Assignee: Ciba Specialty Chemicals CorporationInventor: Hugh Stephen Laver
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Patent number: 6090872Abstract: A process for the production and treatment of a stereoregular polypropylene, such as isotactic polypropylene in which a polymerization reactor is operated under conditions to react propylene supplied to the reactor to produce a stereoregular propylene polymer fluff. A product stream containing the fluff and unreacted propylene is withdrawn from the reactor and at least a portion of the unreacted propylene is separated from the product stream. The propylene polymer fluff is heated to a temperature sufficient to melt the propylene polymer, and a lactone is incorporated into the propylene polymer. The lactone is a 5,7 dialkyl-3-(2,3 dialkyl phenyl)-3H-benzofuran-2-one, in which the 5,7 and 2,3 substituents are of relatively low molecular weights. The phenyl alkyl substituents, each contain 1 or 2 carbon atoms, and the 5,7 alkyl substituents each contain from 2 to 5 carbon atoms.Type: GrantFiled: October 5, 1998Date of Patent: July 18, 2000Assignee: Fina Technology, Inc.Inventors: Lisa Albe, Pamela Lawyer, Jay Nguyen, Mohan Gownder
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Patent number: RE37200Abstract: A thermoplastic polycarbonate molding composition free from organo phosphorus compounds and having an improved resistance to discoloration caused by exposure to High Intensity Discharge (HID) light and heat is disclosed. Accordingly, the molding composition contains (co)polycarbonate resin, a dimeric benzotriazole and an ester of a 3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid. In a preferred embodiment, a sheet made of (co)polycarbonate resin is rendered improved resistance to discoloration by having applied to at least one of its surfaces an adherent protective film prepared from the polycarbonate composition of the invention.Type: GrantFiled: August 23, 1999Date of Patent: May 29, 2001Assignee: Bayer CorporationInventors: Kevin F. Dunay, Winfried G. Paul, Sivaram Krishnan