Two Or More Nitrogen Rings Patents (Class 524/102)
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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: 6869992Abstract: A stabilizer mixture containing (A) a sterically hindered amine compound, and (B) a polymer containing polar residues, the weight ratio of components (A) (B) being 20:1 to 1:20, with the provisos that, (1) component (B) is different from component (A) and does not contain groups of formulae (I) or (II) in which G is hydrogen or methyl, and G1 and G2, independently of one another, are hydrogen, methyl or together are a substituent ?O; and (2) component (B) is different from a polymer having an acidic hydrogen atom.Type: GrantFiled: February 15, 2001Date of Patent: March 22, 2005Assignee: Ciba Specialty Chemicals CorporationInventor: François Gugumus
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Patent number: 6855765Abstract: A two-component polyurethane sealant composition is described. The polyurethane sealant of the invention exhibits improved resistance to degradation by heat and hot water. The composition of the invention includes a novel hindered amine antioxidant.Type: GrantFiled: December 12, 2001Date of Patent: February 15, 2005Assignee: National University of SingaporeInventors: Yit Lin Chew, Suat Hong Goh, Xu Zhou
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Patent number: 6843939Abstract: This invention relates to an UV stabilizing additive composition comprising an ortho-hydroxy triazine compound, a hindered hydroxybenzoate compound and optionally a hindered amine compound. This additive composition may be used to stabilize materials from UV radiation. This invention also contemplates a method of stabilizing a material by contacting the material with the UV stabilizing additive composition.Type: GrantFiled: December 10, 2002Date of Patent: January 18, 2005Assignee: Cytec Technology Corp.Inventors: Joseph A. Stretanski, Brent M. Sanders
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Patent number: 6841599Abstract: A solid, water-soluble or water-dispersible composition comprising a non film-forming material (such as a water-soluble agrochemical) supported by a film-forming polymer is prepared by (i) preparing a film-forming aqueous medium containing (a) a film-forming polymer which is a partially or fully charged homopolymer or a partially charged block copolymer or a homopolymer or block copolymer capable of ring-opening to form a partially charged homopolymer or block copolymer and (b) a water soluble material which is non film-forming (such as a glyphosate salt) and thereafter (ii) drying the film-forming aqueous medium to form the solid composition. The preferred film-forming polymer is alkyl vinylether maleic anhydride block co-polymer or a hydrolysed form thereof.Type: GrantFiled: March 8, 2000Date of Patent: January 11, 2005Assignee: Syngenta LimitedInventors: Rowena Roshanthi Landham, Mrinalini Sachin Oza
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Patent number: 6828364Abstract: A stabilizer mixture containing (I) two different sterically hindered amine compounds, and (II) at least one compound selected from the group consisting of an organic salt of Zn, an inorganic salt of Zn, Zn oxide, Zn hydroxide, an organic salt of Mg, an inorganic salt of Mg, Mg oxide and Mg hydroxide.Type: GrantFiled: July 5, 2001Date of Patent: December 7, 2004Assignee: Ciba Specialty Chemicals CorporationInventor: François Gugumus
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Patent number: 6822023Abstract: Flame retardant polyolefin pre-expanded particles made of a resin composition comprising a polyolefin resin and a sterically hindered amine ether flame retardant, which can be molded with good moldability to give in-mold foamed articles which have an excellent flame resistance and do not generate harmful gas at the time of burning.Type: GrantFiled: December 3, 2001Date of Patent: November 23, 2004Assignees: Kaneka Corporation, Kaneka Texas CorporationInventors: John Bready Stuart, Steven Charles Skarke, Tetsuya Ogita, Takema Yamaguchi, Tomonori Iwamoto
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Patent number: 6812323Abstract: A process for preparing polyamides comprises polymerizing starting monomers or starting oligomers in the presence of at least one compound of the formula (I) where R is a functional group R8 which bears 1-4 identical or different amide-forming groups R7, R1 is H, C1-C20-alkyl, cycloalkyl, benzyl or OR6, where R6 is H, C1-C20-alkyl, cycloalkyl or benzyl, R2, R3, R4 and R5 are independently C1-C10-alkyl, n is a natural number greater than 1, and the piperidine derivatives attached to R are identical or different with regard to the substituents, meaning R1, R2, R3, R4 and R5. The polyamides are useful for preparing filaments, fibers, films, sheetlike structures and moldings.Type: GrantFiled: September 14, 2000Date of Patent: November 2, 2004Assignee: BASF AktiengesellschaftInventors: Ulrike Breiner, Manfred Julius, Rainer Neuberg, Robert Weiss, Axel Wilms, Harry Y. Hu
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Patent number: 6787591Abstract: The invention relates to synergistic stabilizer compositions comprising Hindered Amine Stabilizers (HAS), phenolic antioxidants, and, if appropriate, UV-absorbers, for thermoplastic polymers, especially for polyolefin pipes and other polyolefin molding materials, which are in prolonged contact with water. These mixtures show superior long term performance as measured by standard test methods such as oxidation induction time (OIT).Type: GrantFiled: August 22, 2002Date of Patent: September 7, 2004Assignee: Clariant Finance (BVI) LimitedInventors: Harald Koch, Christoph Kröhnke, Alexander Lichtblau, Matthias Zäh
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Publication number: 20040171720Abstract: Thermoplastic molding compositions comprising, as substantive componentsType: ApplicationFiled: December 10, 2003Publication date: September 2, 2004Inventors: Burkhardt Dames, Wolfgang Saurer
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Patent number: 6762226Abstract: Polyoxymethylene, blends of polycarbonate with acrylonitrile-butadiene-styrene terpolymer, and coatings based on a functional acrylate resin and a crosslinking agent, which are stabilized by addition of a compound of the formula I wherein s is from the range 1 to 8; R1, R2, R3 and R4, independently of each other, are C1-C4alkyl, or R1 and R2 or R3 and R4, together with the carbon atom to which they are bound, form a cyclopentyl or cyclohexyl ring; R5 is hydrogen; C1-C18alkyl; oxyl; OH; CH2CN; C1-C18alkoxy; C5-C12cycloalkoxy; C3-C8alkenyl; C3-C8alkynyl; C7-C12phenylalkyl; C7-C15phenylalkyl, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; C7-C15phenylalkoxy; C7-C15phenylalkoxy, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; or R5 is C1-C8alkanoyl; C3-C5alkenoyl; C1-C18alkanoyloxy; glycidyl; or a group —CH2CH(OH)-G, in which G is hydrogen, methyl or phenyl; and A is as descriType: GrantFiled: October 15, 2002Date of Patent: July 13, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Alessandro Zedda, Graziano Zagnoni, Massimiliano Sala, Dario Lazzari, Stephen Mark Andrews
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Patent number: 6762225Abstract: The invention relates to a light stabilizer composition obtainable by the process comprising the steps of a) mixing a polymer with at least one polyalkylpiperidine and at least one free radical generator b) melt-blending of that mixture at a temperature above the melting point of the polymer and above the decomposition temperature of the free radical generator and at shear conditions sufficient to blend the components. The invention also provides a method for enhancing the light stability of polymers, preferably polyolefins.Type: GrantFiled: September 6, 2002Date of Patent: July 13, 2004Assignee: Clariant Finance (BVI) LimitedInventors: Jan Malik, Christoph Kröhnke
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Patent number: 6759459Abstract: The present invention is drawn to colorless toner compositions for overcoating a print having an ink jet ink image printed thereon. The colorless toner can comprise: a toner resin and at least two additives independently selected from the group consisting of ultraviolet absorbers, free radical inhibitors, thermal stabilizers, and combinations thereof, wherein the ratio of toner resin to total additive is from 1:1 to 99:1 by weight. The colorless toner can also be comprised of a charge control agent and/or a low-melt wax.Type: GrantFiled: May 13, 2002Date of Patent: July 6, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: An-Chung Robert Lin, Michael H. Lee
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Patent number: 6756424Abstract: An ink-jet ink comprising a coloring composition including an oil-soluble dye represented by general formula (I) below. wherein A represents a group represented by general formula II, R3-R6 each independently represents a hydrogen atom or a substituent, M represents —OY or —N(R7)(R8), Y represents a hydrogen atom or a cation necessary for neutralizing charge of an oxygen ion, R7 and R8 each independently represents one of an alkyl group, aryl group, heterocyclic group, acyl group, alkylsulfonyl group, and arylsulfonyl group, and general formula (II) is as follows: wherein R1 represents a hydrogen atom or a substituent, R2 represents a substituent, Z1 represents a group of non-metal atoms necessary for forming a 6-membered nitrogen-containing heterocycle, and * represents a bonding position.Type: GrantFiled: March 8, 2001Date of Patent: June 29, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Yuki Mizukawa, Keizo Kimura
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Patent number: 6756423Abstract: The present invention related to an ink for ink-jet comprising: a coloring composition containing coloring particulates dispersed in a water based medium, the coloring particulates containing an oil soluble dye and an oil soluble polymer; and wherein the coloring composition has wavelength of maximum absorption (&lgr; max(nm)) in the wavelength range from 510 to 560 nm and when the absorbance at the wavelength of maximum absorption (&lgr; max(nm)) is regarded as 1, the absorbance at a wavelength (&lgr; max+75 (nm)) is no more than 0.2 and the absorbance at a wavelength (&lgr; max−75 (nm)) is no more than 0.4.Type: GrantFiled: December 21, 2000Date of Patent: June 29, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Takahiro Ishizuka, Keizo Kimura, Makoto Yamada
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Patent number: 6747077Abstract: A composition containing polypropylene prepared by polymerization over a metallocene catalyst or a polypropylene copolymer prepared by polymerization over a metallocene catalyst, and a stabilizer mixture comprising (A) for example the compound of the formula (A-I-1-a) wherein n1 is a number from 2 to 20; and (B) for example the compound of the formula (B-I-2-a);Type: GrantFiled: October 9, 2001Date of Patent: June 8, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: François Gugumus, Nicola Lelli
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Patent number: 6746739Abstract: The contents of clear or lightly colored plastic containers or films are protected from ultraviolet radiation by the incorporation of certain UV absorbers of the class of durable benzotriazoles and tris-aryl-s-triazines in the container or film. Contents to be protected include foodstuffs, beverages, pharmaceuticals, cosmetics, personal care products, shampoos and the like.Type: GrantFiled: November 15, 2002Date of Patent: June 8, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Stephen Mark Andrews, Joseph Suhadolnik, Mervin Gale Wood
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Patent number: 6740694Abstract: A description is given of an extrusion process for the preparation of a low-dust stabiliser, using a subcooled melt as granulation liquid, as well as of novel amorphous modifications of different stabilisers, including 2,2′-methylenebis(4-[1,1,3,3-tetramethylbutyl]-6-benzotriazol-2-yl-phenol), and of the &bgr;-crystalline modification of 2-(2-hydroxy-3,5-di-tert-butylphenyl)-5-chlorobenzotriazole and of the preparation thereof. The novel process affords products which are easy to handle and which are flowable, and the novel modifications have advantages as regards their preparation, processing and their use as stabiliser.Type: GrantFiled: March 23, 2001Date of Patent: May 25, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Daniel Thibaut, André Schmitter, Benjamin Breitenstein, Christoph Kleiner, Matthias von Frieling, Martin von Büren, André Geoffroy
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Patent number: 6734235Abstract: An extended life fluorescent polyvinyl chloride sheeting and a method for forming the sheeting are disclosed. The sheeting includes a polyvinyl chloride film having a fluorescent colorant incorporated therein. A protective polymer layer is attached to the polyvinyl chloride film. A light filtering agent is incorporated into the protective layer, wherein the filter agent blocks the 425 nm and lower wavelengths of the visible spectrum.Type: GrantFiled: March 21, 2003Date of Patent: May 11, 2004Assignee: Reflexite CorporationInventor: Edward D. Phillips
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Patent number: 6734225Abstract: An ink for an ink jet includes a coloring composition comprising a dispersion medium and coloring particulates containing an oil-soluble dye represented by formula (1) and a polymer selected from the group consisting of polyurethanes, polyesters, polyamides, polyureas and polycarbonates. The formula (1) satisfies at least one of following (i) to (v): (i) A represents —NR4R5, R4 and R5 each represents independently a C1-18 alkyl group having a substituent group; (ii) At least one of R2 and R7 represents a substituted alkyl group; (iii) R8 represents an aryl group having two or more substituent groups; (iv) Two or more substituent groups represented by —NR170SO2R171 are present in the molecule; and (v) One or more carboxyl groups are present in the molecule.Type: GrantFiled: February 12, 2001Date of Patent: May 11, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Junichi Yamanouchi, Keizo Kimura, Takahiro Ishizuka
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Patent number: 6723767Abstract: The present invention is drawn to colorless toner compositions for overcoating a print having an ink jet ink image printed thereon. The colorless toner can comprise: a toner resin and at least two additives independently selected from the group consisting of ultraviolet absorbers, free radical inhibitors, thermal stabilizers, and combinations thereof, wherein the ratio of toner resin to total additive is from 1:1 to 99:1 by weight. The colorless toner can also be comprised of a charge control agent and/or a low-melt wax.Type: GrantFiled: January 2, 2003Date of Patent: April 20, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: An-Chung Robert Lin, Michael H. Lee
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Patent number: 6683124Abstract: Fluorescent yellow pigment compositions comprising Pigment Violet 19 or Pigment Yellow 192 and a polyamide, a process for the making thereof, and a process for making an article comprising said fluorescent yellow pigment composition.Type: GrantFiled: September 27, 2001Date of Patent: January 27, 2004Assignee: Clariant Finance (BVI) LimitedInventor: Joseph R. Webster
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Patent number: 6670411Abstract: A process for separating a solvent and low molecular weight material from an acrylic resin by adding a hindered amine light stabilizer having at least one aminoether group to a mixture of the organic solvent, low molecular weight material and the acrylic resin and subjecting the resulting mixture to an elevated temperature for a time sufficient to remove the solvent and low molecular weight material from the acrylic resin by devolatilization. A composition can be provided which is capable of being formed into a powder coating composition which essentially contains an acrylic resin, a hindered amine light stabilizer having at least one aminoether group or residue thereof and less than 4% by weight of low molecular weight material having a molecular weight less than 600.Type: GrantFiled: October 3, 2001Date of Patent: December 30, 2003Assignee: Anderson Development Co.Inventors: Szu-Ping Lu, Paul J. Prucnal
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Patent number: 6642383Abstract: Compounds of the formula (I) wherein p is zero or 1; q and r, independently of each other, are an integer from 1 to 6; and s is a number ranging from 1 to 8; X is —O— or, when p is 1, X is also a group Rw, Rx, Ry and Rz are, independently of each other, C1-C18alkyl, C5-C12cycloalkyl or C1-C5hydroxyalkyl, especially methyl; R1 is hydrogen; C1-C18alkyl; oxyl; OH; CH2CN; C1-C18alkoxy; C5-C12cycloalkoxy; C3-C8alkenyl; C3-C8alkynyl; C7-C12phenylalkyl; C7-C15phenylalkyl, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; C7-C15phenylalkoxy; C7-C15phenylalkoxy, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; or R1 is C1-C8alkanoyl; C3-C5alkenoyl; C1-C18alkanoyloxy; glycidyl; or a group —CH2CH(OH)—G, in which G is hydrogen, methyl or phenyl; R2 is hydrogen, C1-C8alkyl, C5-C12cycloalkyl or C1-C4hydroxyalkyl; R3, R4, R5 independently of each otherType: GrantFiled: May 15, 2001Date of Patent: November 4, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Dario Lazzari, Graziano Zagnoni, Mirko Rossi, Alessandro Zedda, Valerio Borzatta, Stephen Mark Andrews
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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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Publication number: 20030199618Abstract: A stabilizer mixture containing the components (A), (B) and (C) wherein component (A) is for example a compound of the formula (A-1) wherein A1 is hydrogen or C1-C4alkyl, A2 is a direct bond or C1-C10alkylene, and n1 is a number from 2 to 50; component (B) is a low molecular weight sterically hindered amine compound containing a group of the formula (I) or (II); and component (C) is a high molecular weight sterically hindered amine compound containing a group of the formula (I); with the proviso that components (A), (B) and (C) are different.Type: ApplicationFiled: October 10, 2002Publication date: October 23, 2003Inventor: Francois Gugumus
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Patent number: 6630527Abstract: Disclosed herein is a UV stabilized composition, comprising a polyester resin and a polycarbonate resin; an impact modifier; and an additive composition comprising a hindered amine light stabilizer and another UV absorber. Such compositions find utility in the manufacture of automobile components, for example.Type: GrantFiled: October 19, 2001Date of Patent: October 7, 2003Assignee: General Electric CompanyInventors: Jean R. Pierre, Peter H. Th. Vollenberg
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Patent number: 6620868Abstract: The present invention provides a coating composition comprising a) one or more polyester resins (A), b) one or more polyacrylate resins (B), c) one or more di- and/or polyisocyanates (C) having free or blocked isocyanate groups, d) one or more light stabilizers (L1) based on a UV absorber, e) one or more light stabilizers (L2) based on sterically hindered amines, f) one or more pigments (P), and g) one or more organic solvents (D), where 1.) the polyester (A) has an OH number of from 80 to 200 mg KOH/g and an acid number <10 mg KOH/g, 2.) the polyacrylate resin (B) has an OH number of from 80 to 200 mg KOH/g and an acid number <20 mg KOH/g, 3.) the light stabilizer (L2) based on, sterically hindered amines is amino ether functionalized, and 4.) effect pigments (EP) are included herein in a nonhiding concentration.Type: GrantFiled: May 14, 2001Date of Patent: September 16, 2003Assignee: BASF Coatings AGInventor: Guido Wilke
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Patent number: 6617382Abstract: The invention relates to a flame-retardant coating for fiber materials comprising at least one film-forming binder and one flame retardant, wherein this comprises melamine polyphosphate as flame retardant. The invention also relates to the use of the novel flame-retardant coating for producing flame-retardant fiber materials.Type: GrantFiled: April 28, 2000Date of Patent: September 9, 2003Assignee: Clariant GmbHInventors: Wolf-Dieter Pirig, Volker Thewes
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Patent number: 6613819Abstract: The invention provides, generally, light stable article containing at least one single or multiple layer polyester film and an effective amount of a light absorbing composition comprising one or more of an ultraviolet light absorbing compound, a hindered amine light stabilizer (HALS) composition, and a phosphonate stabilizing compound. Generally, the weight ratio of the light absorbing compound to the HALS composition is at least about 2:1. Various composite articles and constructions made utilizing the above light stable articles are also provided.Type: GrantFiled: June 27, 2001Date of Patent: September 2, 2003Assignee: 3M Innovative Properties CompanyInventors: Stephen A. Johnson, Daniel J. McGurran, Terry R. Bailey, John W. Frank
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Patent number: 6608122Abstract: o-Hydroxyphenyl-s-triazines of the formula I in which n is 1 to 4 and R1 to R7 are as defined in claim 1, can be used, in combination with sterically hindered amines of the polyalkylpiperidine type, for stabilizing organic polymers. Some of these compounds are novel and can also be used without polyalkylpiperidine.Type: GrantFiled: October 5, 2000Date of Patent: August 19, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Jean-Luc Birbaum, Jean Rody, Mario Slongo, Andreas Valet, Roland A. E. Winter
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Publication number: 20030149143Abstract: Polyolefins, especially polypropylene, can be made flame retardant by the incorporation therein of a synergistic mixture of a selected hindered amine substituted by an alkoxy, cycloalkoxy or hydroxyalkoxy moiety and a selected organic or inorganic brominated and/or phosphorus containing flame retardant, such as ammonium polyphosphate or decabromodiphenyl oxide wherein the amount of organic or inorganic flame retardant required to achieve an acceptable level of flame retardancy is significantly reduced compared to that needed when the hindered amine is not present.Type: ApplicationFiled: July 29, 2002Publication date: August 7, 2003Inventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan
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Patent number: 6599963Abstract: Hindered amine compounds containing a group of the formula where G1 and G2 are independently alkyl of 1 to 4 carbon atoms or are together pentamethylene, Z1 and Z2 are each methyl, or Z1 and Z2 together form a linking moiety which may additionally be substituted by an ester, ether, amide, amino, carboxy or urethane group, and E is alkoxy, cycloalkoxy, aralkoxy, aryloxy, —O—CO—OZ3, —O—Si(Z4)3, —O—PO(OZ5)2 or —O—CH2—OZ6 where Z3, Z4, Z5 and Z6 are selected from the group consisting of hydrogen, an aliphatic, araliphatic and aromatic moiety, when added to a wide variety of polymeric substrates, particularly polyolefins and styrenic polymers, surprisingly bestow flame retardant properties to such compositions.Type: GrantFiled: August 1, 2001Date of Patent: July 29, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Jr., Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan
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Patent number: 6596461Abstract: A compound of formula (I) wherein n is e.g. a number from 2 to 50; R5′ and R5″ are e.g. a group of formula (II); G1, G2, G3 and G4 are e.g. C1-C4akyl; R1 is e.g. hydrogen or C1-C4alkyl; R2 is e.g. methylene; R3′ is e.g. hydrogen and R3″ is e.g. hydrogen or C1-C4alkyl; R4 is e.g. C2-C8alkylene; and X is e.g. —N(R7)R8) with R7 and R8 being independently of one another hydrogen or C1-C8alkyl, is useful for stabilizing an organic material against degradation induced by light, heat or oxidation.Type: GrantFiled: May 22, 2001Date of Patent: July 22, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Dario Lazzari, Mirko Rossi, Graziano Zagnoni, Alessandro Zedda, Valerio Borzatta, Stephen Mark Andrews
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Patent number: 6586507Abstract: 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: October 3, 2001Date of Patent: July 1, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: James Peter Galbo, Gerald A. Capocci, Nancy N. Cliff, Robert E. Detlefsen, Michael P. DiFazio, Ramanathan Ravichandran, Peter Solera, Christophe Bulliard
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Patent number: 6583203Abstract: To offer a resin material in which various properties such as excellent appearance and rigidity inherent to a polyacetal resin are maintained and a weather (light) resistance is improved. That is, a branched polyacetal resin composition comprising 100 parts by weight of a branched polyacetal copolymer (A) having an oxymethylene group as the main repeating unit and having a branching unit represented by the following formula (I), 0.01 to 5 parts by weight of a weather (light) resistant stabilizer (B) and 0.01 to 5 parts by weight of a hindered amine substance (C): wherein m and n each is an integer of 0 to 5; the sum of m+n is 1 to 5; and R is a monovalent organic group having a molecular weight of 40 to 1000.Type: GrantFiled: July 5, 2001Date of Patent: June 24, 2003Assignee: Polyplastics Co., Ltd.Inventors: Kuniaki Kawaguchi, Hidetoshi Okawa, Yoshihisa Tajima
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Patent number: 6583250Abstract: The bondability of a polyolefin, particularly to cyanoacrylate adhesives, is improved by incorporating in the polyolefin a polymerization initiator capable of initiating the polymerization of the monomers constituting the cyanoacrylate adhesive. The polymerization initiator may, for example, be a sterically hindered nitrogen base and may be mixed with the polyolefin at a temperature above the polyolefin's glass transition temperature using, for example, co-extrusion or co-injection methods.Type: GrantFiled: November 20, 1998Date of Patent: June 24, 2003Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Paul Birnbrich, Herbert Fischer, Manfred Gorzinski, Thomas Huver
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Publication number: 20030105195Abstract: Calibration devices for optical scanners and methods for their use are provided. The subject devices are characterized by having a polymeric coating with at least one fluorescent agent, where the devices have minimal local and global nonuniformities. The subject device may also include one or more photobleached regions. In using the subject devices, a surface is illuminated with at least one light source, fluorescence data is obtained from the surface and the optical system is calibrated based upon the obtained fluorescence data. The subject invention finds use in a variety of optical scanners, including biopolymeric array optical scanners. Also provided are kits for use in verifying and calibrating optical scanners.Type: ApplicationFiled: December 4, 2001Publication date: June 5, 2003Inventors: Nelson R. Holcomb, Russell A. Parker, Steven M. Lefkowitz
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Patent number: 6573317Abstract: The invention relates to a copolyether ester composition protected against the influence of light that contains (1) a copolyether ester; (2) a UV-light-absorbing compound; (3) a hindered amine photostabilizer; (4) optionally a thermal-oxidative stabilizer chosen from the group comprising phenolic compounds; (5) optionally other additives, characterized in that the hindered amine photostabilizer is chosen from a group of compounds having the general formula (1). The composition according to the invention shows a very small amount of discoloration in ageing under the influence of light.Type: GrantFiled: April 26, 2001Date of Patent: June 3, 2003Assignee: DSM N.V.Inventors: Geert G. I. V. Bonte, Pieter Gijsman
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Patent number: 6566425Abstract: Colorants comprising a chromophore having two methine moieties attached to a benzodifuranone backbone, wherein said moieties optionally have at least one poly(oxyalkylene) chain, preferably at least two such chains attached thereto are provided. Such colorants exhibit excellent thermal stability, effective colorations, excellent low extraction rates, and effective lightfastness levels, particularly when incorporated within certain media and/or on the surface of certain substrates, particularly polyesters. The optional poly(oxyalkylene) chains also increase the solubility in different solvents or resins thereby permitting the introduction of such excellent coloring chromophores within diverse media and/or on diverse substrates as well as provides a liquid colorant which facilitates handling. Compositions and articles comprising such colorants are provided as are methods for producing such inventive colorants.Type: GrantFiled: September 18, 2001Date of Patent: May 20, 2003Assignee: Milliken & CompanyInventors: Daniel M. Connor, Eric B. Stephens
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Patent number: 6566427Abstract: The invention relates to a mixture for stabilizing polyolefins against damage caused by light, which mixtures contain: (A) a hindered amine light stabilizer; (B) an oxide, hydroxide or organic salt of zinc or magnesium; and (C) a pigment and/or a UV absorber.Type: GrantFiled: July 31, 1997Date of Patent: May 20, 2003Assignee: Ciba Specialty Chemicals CorporationInventor: François Gugumus
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Publication number: 20030088015Abstract: Preparing pigment preparations by mixing a dyestuff with a monomer and simultaneously polymerizing the monomers in an extruder at elevated temperatures, wherein the following steps are carried out:Type: ApplicationFiled: August 9, 2002Publication date: May 8, 2003Inventors: Johannes Leugs, Harald Marinus Alexander Heere, Adrianus Hendrikus Van Rooijen
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Patent number: 6559207Abstract: A flame resistant composition comprises (a) a polymer; (b) a synergistic mixture comprising(i) from about 0.6 to about 3 percent of a non-halogenated flame retardant compound; and (ii) at least about 0.06 percent of a compatible additive; wherein said percentages are based on weight percent of (a) plus (b), wherein (a) plus (b) equals 100 percent. A method of rendering a polymer flame resistant comprises compounding said polymer with a synergistic mixture comprising (i) from about 0.6 to about 3 percent of a non-halogenated flame retardant compound; and (ii) at least about 0.06 percent of a compatible additive; wherein the percentages are based on weight percent of polymer plus the synergistic mixture, and wherein polymer plus synergistic mixture equals 100 percent.Type: GrantFiled: March 14, 2000Date of Patent: May 6, 2003Assignee: SI CorporationInventors: Larry English, Courtney Tyvand, Kevin Kirkland
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Publication number: 20030083406Abstract: The present invention relates to 4-formylamino-N-methylpiperidine derivatives of the formula (I) 1Type: ApplicationFiled: September 27, 2002Publication date: May 1, 2003Inventors: Sylke Haremza, Jurgen Krockenberger, Manfred Appel, Hubert Trauth, Alexander Aumuller
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Patent number: 6555603Abstract: A resin composition for agricultural film, which composition contains 100 parts by mass of a synthetic resin (A) and the below-specified amount of a polymer stabilizer (B). Polymer stabilizer (B): an adduct obtained by adding a compound (b1) represented by the following formula (I) to a polymer (b2) having a molecular weight of at least 300: (wherein n represents an integer of 1-4; X represents —O— or —NH—; and R represents a hydrogen atom, a C1-C20 aliphatic acyl group, a C1-C20 aliphatic polyacyl group, a C1-C20 aromatic acyl group, or a C1-C20 aromatic polyacyl group). Amount of polymer stabilizer (B): such an amount that makes the amount of nitrogen atoms contained in the polymer stabilizer (B) 0.0005-1 part by mass.Type: GrantFiled: August 30, 2001Date of Patent: April 29, 2003Assignee: Asahi Denka Kogyo K.K.Inventors: Kazumi Kikkawa, Tsutomu Matsuura, Naoko Dai, Toshinori Yukino
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Patent number: 6552106Abstract: An extended life fluorescent polyvinyl chloride sheeting and a method for forming the sheeting are disclosed. The sheeting includes a polyvinyl chloride film having a fluorescent colorant incorporated therein. A protective polymer layer is attached to the polyvinyl chloride film. A light filtering agent is incorporated into the protective layer, wherein the filter agent blocks the 425 nm and lower wavelengths of the visible spectrum.Type: GrantFiled: September 26, 2001Date of Patent: April 22, 2003Assignee: Reflexite CorporationInventor: Edward D. Phillips
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Publication number: 20030069337Abstract: A stabilizer mixture containing (A) a sterically hindered amino compound, and (B) a polymer containing polar residues, the weight ratio of components (A)(B) being 20:1 to 1:20, with the provisos that. (1) component (B) is different from component (A) and does not contain groups of formulae (I) or (II) in which G is hydrogen or methyl, and G1 and G2, independently of one another, are hydrogen, methyl or together are a substituent ═O; and (2) component (B) is different from a polymer having an acidic hydrogen atom.Type: ApplicationFiled: July 23, 2002Publication date: April 10, 2003Inventor: Francois Gugumus
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Patent number: 6545071Abstract: A stabilizer mixture containing A) for example at least one compound of the formula (I) wherein the radicals R1, independently of one another, are hydrogen, C1-C8alkyl, —O, —CH2CN, C3-C6alkenyl, C7-C9phenylalkyl, C7-C9phenylalkyl which is substituted on the phenyl radical by C1-C4alkyl; or C1-C8acyl; and B) magnesium oxide, magnesium hydroxide, zinc oxide, zinc hydroxide or an organic salt of zinc or magnesium, or a hydrotalcite; and C) either (C1) an UV absorber or (C2) a pigment or (C3) an UV absorber and a pigment. Such a stabilizer mixture is particularly useful for stabilizing a polyolefin against light-induced degradation.Type: GrantFiled: August 14, 1997Date of Patent: April 8, 2003Assignee: Ciba Specialty Chemicals CorporationInventor: François Gugumus
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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: 6528560Abstract: Polyamide mixtures (blends) or alloys having improved transparency, chemical resistance and slight natural color, as well as a process improving the melting capacity and homogeneity of blends of polyamide according to formula (I) and partly crystalline polymers according to formula (II). Transparent polyamide blends are obtained which exhibit improved properties with respect to transparency, color, and chemical resistance, in particular stress cracking resistance against isopropanol, without resulting losses in the mechanical properties. At the same time it was possible to distinctly raise the throughput during extrusion while maintaining optimum transparency.Type: GrantFiled: February 28, 2001Date of Patent: March 4, 2003Assignee: EMS-Chemie AGInventor: Friedrich Severin Bühler