With Stabilizer Or Inhibitor Patents (Class 252/183.12)
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Patent number: 7084189Abstract: Disclosed is a phase change ink composition comprising (a) a colorant and (b) the reaction product of (i) an isocyanate and (ii) an antioxidant or UV stabilizer molecule having thereon (A) at least one isocyanate-reactive hydroxyl group and/or (B) at least one isocyanate-reactive primary or secondary amino group.Type: GrantFiled: February 20, 2003Date of Patent: August 1, 2006Assignee: Xerox CorporationInventors: Jeffery H. Banning, Donald R. Titterington, Mary Ryan-Hotchkiss
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Patent number: 7081211Abstract: Multi-layer reaction mixtures that includes exothermic generating particles having a water soluble coating encasing a portion of the particles, a volatile component and, optionally, a buffer, an aqueous solution or both. At least two layers of the reaction mixture contain exothermic generating particles and at least one layer of the reaction mixture contains a portion of the exothermic generating particles suspended in a gel that includes the water soluble coating. These multi-layer reaction mixtures are especially suited to generate heat in a controllable manner. In one such controlled reaction, the reaction components are mixed together and the reaction mixture increases in temperature to a Set Temperature within a predetermined time, and the mixture remains at the Set Temperature for a longer period of time. In this manner, volatile components can be controllably released to the surrounding environment.Type: GrantFiled: January 13, 2003Date of Patent: July 25, 2006Assignee: The Procter & Gamble CompanyInventors: Yu-jun Li, Mark Hsiang-Kuen Mao, Haruo Tamura, Hsin-Yuan Hu
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Patent number: 6953535Abstract: The invention relates to a redox initiator system which allows dental formulations to be cured in acidic medium by way of a free-radical polymerization and which ensures a high level of adhesion of the polymerizing composition to the hard substances of the teeth, namely enamel and, in particular, dentine. The redox initiator system comprises the following constituents: (A) from 14.9 to 50% by weight of a barbituric acid or thiobarbituric acid and/or of a barbituric or thiobarbituric acid derivative, (B) from 30 to 75% by weight of a peroxodisulfate compound and/or peroxodiphosphate compound, (C) from 10 to 35% by weight of a sulfinic acid compound, and (D) from 0.1 to 5% by weight of a copper compound.Type: GrantFiled: May 13, 2002Date of Patent: October 11, 2005Assignee: 3M Espe AgInventors: Reinhold Hecht, Manfred Ludsteck
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Patent number: 6855435Abstract: A transparent film whose thickness is in the range from 1 to 500 ?m and which comprises, as principal constituent, a crystallizable thermoplastic, wherein the film comprises at least one UV stabilizer as light stabilizer and at least one optical brightener, and to the use of the film, and also to a process for its production.Type: GrantFiled: May 2, 2003Date of Patent: February 15, 2005Assignee: Mitsubishi Polyester Film GmbHInventors: Ursula Murschall, Guenther Crass, Guenter Bewer, Klaus Oberlaender
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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: 6706209Abstract: A stabilized monomer composition containing at least one ethylenically unsaturated monomer and a combination of N,N-diethylhydroxylamine an N-nitroso-N-phenylhydroxylamine or its salt in a weight ratio of from 1:1 to 10:1 permits the synthesis of 2-hydroxyalkyl (meth)acrylates in particularly high yields and remains stable during prolonged storage.Type: GrantFiled: August 24, 2000Date of Patent: March 16, 2004Assignee: Roehm GmbH & Co. KGInventors: Jakob Scharf, Hartmut Rau, Friedrich Goetzen
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Publication number: 20040002616Abstract: A system for a fast-rate preparation just before use of organic peroxyacids, in a hydroalcoholic environment, by mixing at temperatures lower than 40° C., preferably lower than 25° C., a first reactant and a second reactant, kept separate from each other during storage, to obtain an activated solution, the first reactant is in the solid or liquid state at a temperature from 5 to 45° C. and includes at least one acyl donating group, and the second reactant is in the solid state, at least in the temperature range from 5° C. and 40° C., and comprises a peroxide anion source in a concentration such as to provide at least 10-fold molar excess of peroxide with respect to the stoichiometric amount of the acyl-donor, a biocidal agent including at least one C1-C18 linear or branched aliphatic and/or aromatic alcohol, and a stabilising buffer component suitable for keeping the second reactant at a desired pH value.Type: ApplicationFiled: May 30, 2003Publication date: January 1, 2004Inventors: Andrea Preto, Paolo Tabasso
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Patent number: 6660181Abstract: A method is disclosed for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers a polymerization inhibiting amount of a mixture comprising A) a first inhibitor comprising 4-amino-2,2,6,6-tetramethylpiperidinyloxy, wherein said amino group is a primary, secondary, or tertiary amino group; and B) at least one other inhibitor having the structural formula: wherein: R1 and R4 are independently selected from the group consisting of hydrogen, alkyl, and heteroatom-substituted alkyl; R2 and R3 are independently selected from the group consisting of alkyl and heteroatom-substituted alkyl; X1 and X2 (1) are independently selected alkyl groups of 1 to 15 carbon atoms or (2) taken together, form a ring structure with the nitrogen.Type: GrantFiled: July 12, 2002Date of Patent: December 9, 2003Assignee: Crompton CorporationInventors: Brigitte Benage, Angela M. Edwards, Vilen Kosover, Gan Wang, Anthony Gentile, Jesus R. Fabian, Gerald J. Abruscato
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Patent number: 6555019Abstract: Sulfur free, crosslinking, scorch-retarding compositions for compounding and cure of polymers susceptible to cure by free radical initiators are disclosed.Type: GrantFiled: December 17, 2001Date of Patent: April 29, 2003Assignee: Atofina Chemicals, Inc.Inventors: Leonard Henry Palys, Michael Fred Novits, Leo Kasehagen, Fabien Debaud, Luciano Abrigo
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Patent number: 6537467Abstract: The present invention relates to free radical captors, especially to radical polymerization inhibitors or retarders which, characteristically, are immobilized on a solid support. The present invention also relates to a method of preparing said immobilized captors, and to a method of stabilizing, at least temporarily, molecules or mixtures of molecules which makes use of said immobilized captors.Type: GrantFiled: April 28, 1999Date of Patent: March 25, 2003Assignee: Corning IncorporatedInventor: Marc Moroni
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Publication number: 20020192736Abstract: A composition for assaying of peroxidase activity:Type: ApplicationFiled: February 23, 2001Publication date: December 19, 2002Applicant: Pierce Chemical CompanyInventors: Paul D. Davis, Kelli D. Feather-Henigan, Kimberly Hines
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Patent number: 6495065Abstract: The present invention is a composition for and a method of shortstopping free radical emulsion polymerizations that inhibits the formation of nitrosamines. The composition comprised nitrosamine inhibitors in combination with conventional alkylhydroxylamine shortstoppers. Such nitrosamine inhibitors are based on primary amines, amine-containing polymers, pyrroles, hydroquinones, certain phenols, ascorbic acid, and other well-known nitrosation inhibitors; they may be used individually or as a blend. The compositions are targeted for applications in the emulsion processes for producing rubber latexes and the preparation of rubber products thereafter.Type: GrantFiled: August 3, 2000Date of Patent: December 17, 2002Assignee: Atofina Chemicals, Inc.Inventors: Jianfeng Lou, Thomas S. Buszta, Michael D. Gernon
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Publication number: 20020037991Abstract: A 6,6′-dialkyl-3,3′,4,4′-biphenyltetracarboxylic dianhydride is prepared by brominating a 4-alkylphthalic anhydride at its 5-position, and coupling the bromination product in the presence of a nickel catalyst; A photosensitive resin composition containing a polyimide precursor having repetitive units of general formula (7) is applied onto a substrate, exposed to 1-line, developed and heated to form a polyimide relief pattern.Type: ApplicationFiled: August 30, 2001Publication date: March 28, 2002Applicant: Hitachi Chemical DuPont MicroSystems Ltd.Inventors: Noriyoshi Arai, Makoto Kaji, Akihiro Sasaki, Toshiki Hagiwara
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Patent number: 6342648Abstract: The present invention provides compositions and methods inhibiting polymerization of vinyl aromatic compounds comprising a bisphenol compound and an oxidized p-phenylenediamine. In a specific, non-limiting embodiment, the polymerization of the vinyl aromatic compound styrene is inhibited by a composition comprising the bisphenol compound 4,4′-methylenebis(2,6-di-tert-butyphenol) and the oxidized p-phenylenediamine compound N-phenyl-N′-methyl-benzoquinonediimide.Type: GrantFiled: September 30, 1999Date of Patent: January 29, 2002Assignee: Baker Hughes IncorporatedInventor: Muslim D. Shahid
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Patent number: 6300533Abstract: Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of an inhibitor having the structural formula: wherein R1 and R4 are independently selected from the group consisting of hydrogen, alkyl, and heteroatom-substituted alkyl and R2 and R3 are independently selected from the group consisting of alkyl and heteroatom-substituted alkyl and the portion represents the atoms necessary to form a five-, six-, or seven-membered heterocyclic ring, at least one of said atoms being a carbon atom substituted with a primary, secondary, or tertiary amino group.Type: GrantFiled: August 16, 1999Date of Patent: October 9, 2001Assignee: Uniroyal Chemical Company, Inc.Inventors: Brigitte Benage, Angela M. Edwards, Vilen Kosover, Gan Wang, Anthony Gentile, Jesus Fabian, Gerald J. Abruscato
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Patent number: 6258866Abstract: Provided herein are subcombinations from which polyurethane foams and polyurethane foams containing polyisocyanurates may be prepared. The subcombinations are unique in that they contain components which synergistically act towards promoting compatibility between a blowing agent and the remaining components of the formulation. Through the use of the teachings herein, blowing agent concentrations in excess of 25% by weight of the total subcombination may be incorporated.Type: GrantFiled: January 31, 2000Date of Patent: July 10, 2001Assignee: Huntsman Petrochemical CorporationInventor: Frank C. Kohoutek
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Patent number: 6242011Abstract: A composition of matter and the method of making that provides a low pH acidic composition that is useful for destroying microorganisms that are undesirable and useful for destroying or reducing melanoma on human skin. The composition and method include sulfuric acid combined with distilled water and ammonium sulfate under at least 15 psi pressure in a pressurized container, all of which is heated to approximately 800° F. or more for at least 3 hours. The final cooled mixture is stabilized with 10 percent of the original mixture. The resultant composition is useful for preserving food, such as fresh fish, and for skin treatment of melanoma.Type: GrantFiled: August 5, 1999Date of Patent: June 5, 2001Inventor: Barry W. Cummins
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Patent number: 6204403Abstract: A method for preparing acrylamidoalkylalkoxysilanes from aminoalkylalkoxysilanes and acrylate esters is described wherein at least two inhibitors and an amidation catalyst are used in an elevated temperature reaction.Type: GrantFiled: June 14, 1999Date of Patent: March 20, 2001Assignee: Crompton CorporationInventors: Enrico J. Pepe, Anne Kathryn McMullen, Scot M. Turner, Keith J. Weller