Nitrogen Other Than As Ammonia Or The Ammonium Ion In Preservative Or Stabilizer Patents (Class 570/111)
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Publication number: 20120085110Abstract: The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be a terpene, terpenoid or fullerene; or a mixture of a terpene, terpenoid or fullerene with other stabilizers. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.Type: ApplicationFiled: December 14, 2011Publication date: April 12, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: JON LEE HOWELL, Velliyur Nott Mallikarjuna Rao, Thomas J. Leck, Barbara Haviland Minor, Mario Joseph Nappa, Nandini C. Mouli, Ekaterina N. Swearingen, Andrew Edward Feiring
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Publication number: 20110041530Abstract: The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be an amine or a mixture of an amine with other stabilizers. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.Type: ApplicationFiled: August 31, 2007Publication date: February 24, 2011Applicant: E. I. DUPONT DE NEMOURS AND COMPANYInventors: Nandini C. Mouli, Barbara Haviland Minor, Mario Joseph Nappa, Thomas J. Leck
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Publication number: 20100288965Abstract: The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be a terpene, terpenoid or fullerene; or a mixture of a terpene, terpenoid or fullerene with other stabilizers. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.Type: ApplicationFiled: August 31, 2007Publication date: November 18, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Jon Lee Howell, Velliyur Nott Mallikarjuna Rao, Thomas J. Leck, Barbara Haviland Minor, Mario Joseph Nappa, Nandini C. Mouli, Ekaterina Swearingen, Andrew Edward Feiring
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Patent number: 6610219Abstract: Functional optical materials for optical systems that are typically useful in optical waveguides, optical switching systems, optical modulators, optical computing systems and the like. Included are polymer systems and electrooptical chromophores. Polymers are thermoplastic and/or thermosetting polymers and are blended or co-polymerized with the electrooptic chromophore. The thermoplastic or thermosetting polymer selected from an acrylic/methacrylic, polyester, polyurethane, polyimide, polyamide, epoxy resin, or hybrid (organic-inorganic) or nanocomposite polyester polymer. The electrooptic chromophore is selected from a substituted aniline, substituted azobenzene, substituted stilbene, or substituted imine. Methods for improving adhesion promotion for the various novel materials are also provided.Type: GrantFiled: February 6, 2001Date of Patent: August 26, 2003Assignee: Battelle Memorial InstituteInventors: Vincent D. McGinniss, Steven M. Risser
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Patent number: 6350395Abstract: A stabilizer composition comprising a) an N-alkyl morpholine and b) a straight-chain or cyclic aliphatic amine containing no hetroatoms other than N with a boiling point of at least 150° C. The stabilizer composition is useful for stabilizing a halogenated hydrocarbon against degradation.Type: GrantFiled: June 16, 2000Date of Patent: February 26, 2002Assignee: The Dow Chemical CompanyInventor: Marius Kuemin
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Patent number: 6153575Abstract: Describes a stabilized trans-1,2-dichloroethylene composition having a low concentration of aliphatic aldehyde hydrazone, optionally in combination with an epoxide. The aliphatic aldehyde hydrazone was found to be more efficient than commercially used hydroquinone monomethylether (HQMME) in preventing the isomeric transformation of trans-1,2-dichloroethylene to cis-1,2-dichloroethylene during storage. Also described is a process for cleaning the surface of an article with the stabilized 1,2-dichloroethylene composition.Type: GrantFiled: March 6, 2000Date of Patent: November 28, 2000Assignee: PPG Industries Ohio, Inc.Inventors: Earl M. Gorton, Ronald D. Olinger
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Patent number: 5959165Abstract: (1) At least one nitro compound and (2) at least one member selected from the group consisting of an aromatic hydrocarbon and an alicyclic unsaturated hydrocarbon are added to 1,1,1,2,3,3-hexafluoropropane (HFC236ea) or 1,1,1,3,3-pentafluoropropane (HFC245fa). Optionally, (3) at least one member selected from the group consisting of an aliphatic unsaturated hydrocarbon, an epoxy compound, an ether compound, a phenol compound, an ester compound and a cyclic compound is further added. As a result, HFC236ea and HFC245fa have remarkably improved stability at any stages and in any states during storage and use of HFC236ea or HFC245fa and during use of the foamed product.Type: GrantFiled: October 17, 1997Date of Patent: September 28, 1999Assignee: Daikin Industries, Ltd.Inventors: Tatsumi Tsuchiya, Satoshi Ide
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Patent number: 5932775Abstract: To avoid the formation of acidity in an F125 containing olefins, a radical scavenger and/or an acidity scavenger is added to it.Type: GrantFiled: November 4, 1997Date of Patent: August 3, 1999Assignee: Elf Atochem S.A.Inventors: Eric Lacroix, Jean-Marc Sage
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Patent number: 5858953Abstract: A 1-bromopropane composition is disclosed, which stays stable even under the condition that it is repeatedly used at high temperatures over an extended period of time as in vapor degreasing. The stabilized 1-bromopropane composition comprises 100 parts by weight of 1-bromopropane, from 0.1 to 5 parts by weight of nitromethane, and from 0.1 to 5 parts by weight of 1,2-butylene oxide or trimethoxymethane.Type: GrantFiled: April 4, 1996Date of Patent: January 12, 1999Assignee: Tosoh CorporationInventors: Shunji Aman, Yoshikazu Oda
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Patent number: 5696306Abstract: A decomposition inhibitor for hydrochlorofluorocarbons and hydrofluorocarbons (HCFCs/HFCs) which comprises at least one member of the class consisting of organic acid-amine mixtures, fluorine-free halogenated hydrocarbons, carboxylic acid esters, nitrile compounds, carbonyl compounds and halogenated nitro compounds. A method of inhibiting the decomposition of HCFCs/HFCs which comprises using the decomposition inhibitor mentioned above.In the field of polyurethane foam manufacture using HCFCs/HFCs as blowing agents, the effect of inhibiting the decomposition of HCFCs/HFCs can be produced over a long period of time covering the storage of raw materials, the foam manufacturing process and the use of foamed products.Type: GrantFiled: June 22, 1995Date of Patent: December 9, 1997Assignee: Daikin Industries, Ltd.Inventors: Satoshi Ide, Tatsumi Tsuchiya, Naoki Maekawa, Tsuyoshi Inaba, Hirokazu Aoyama
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Patent number: 5169996Abstract: HCFC blowing agents such as 141b which are stabilized with diethylhydroxylamine, 1,4-benzoquinone, or 2,6-di-t-butylbenzoquinone.Type: GrantFiled: October 9, 1991Date of Patent: December 8, 1992Assignee: Elf Atochem North America, Inc.Inventors: Richard M. Crooker, Maher Y. Elsheikh, Robert B. Hager
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Patent number: 5169995Abstract: Storage-stable compositions of 141b which are inhibited against decomposition with additives such as alpha-methylstyrene.Type: GrantFiled: October 9, 1991Date of Patent: December 8, 1992Assignee: Elf Atochem North America, Inc.Inventors: Richard M. Crooker, James P. Lavelle, Maher Y. Elsheikh
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Patent number: 5080767Abstract: Photochlorination of aromatic compounds having at least one alkyl side chain is carried out in the presence of an alkylene polyamine previously mixed with an aromatic compound having at least one chlorinated side chain whereby side reactions are suppressed.Aromatic compounds having a monochlorinated side chain are stabilized with an alkylene polyamine. Stainless steel apparatuses can be used in both cases.Type: GrantFiled: April 4, 1990Date of Patent: January 14, 1992Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Sinji Ando, Yukio Fukui, Kouji Matui, Takayoshi Masuda
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Patent number: 4954287Abstract: Mixtures containing active hydrogen compounds such as polyols and aminoalcohols useful for the production of polyurethane foams and also containing trichlorofluoromethane or 1,1,2-trichloro-1,2,2-trifluoroethane as foam blowing agent, are stabilized against reaction of the active hydrogen compound(s) with the chlorofluorohydrocarbon by incorporating a stabilizing amount of amylene, ortho-(isopropenyl) aniline or diisobutylene.Type: GrantFiled: April 1, 1988Date of Patent: September 4, 1990Assignee: Imperial Chemical Industries PLCInventors: Neil Winterton, John G. Carey
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Patent number: 4783560Abstract: Stabilized compositions of 1,1,1-trichloroethane containing a mixture of two dialkoxyalkanes such as dimethoxymethane and 1,2-dimethoxyethane and at least one acid acceptor such as epoxybutane, and, if appropriate, a nitrated derivative such as nitromethane.These compositions are well suited for degreasing metals and in the drycleaning of textiles.Type: GrantFiled: July 24, 1986Date of Patent: November 8, 1988Assignee: Solvay & Cie (Societe Anonyme)Inventors: Michel Servais, Jean Verbeyst
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Patent number: 4466903Abstract: 2-Alkylidene-1,3-dioxolanes and 2-(1-alkylalkylidene)-1,3-dioxolanes are employed as acid acceptors in methylchloroform, trichloroethylene or mixtures thereof. The preferred acid acceptor is 2-methylene-1,3-dioxolane.In another aspect of the invention, aliphatic aldehyde hydrazone is employed to stabilize 2-alkylidene-1,3-dioxolane and 2-(1-alkylalkylidene)-1,3-dioxolane. The preferred aliphatic aldehyde hydrazone is acetaldehyde dimethylhydrazone.Type: GrantFiled: June 16, 1983Date of Patent: August 21, 1984Assignee: PPG Industries, Inc.Inventor: Steven E. Pamer
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Patent number: 4424386Abstract: Metal corrosion in the presence of methylchloroform is inhibited when thiazolidine is added to the methylchloroform. The inhibitor is useful in degreasing processes and may be used in combination with other known inhibitors.Type: GrantFiled: September 10, 1981Date of Patent: January 3, 1984Assignee: The Dow Chemical CompanyInventor: Nobuyuki Ishibe
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Patent number: 4424147Abstract: Disclosed is a method of inhibiting the attack by perchloroethylene on copper and organic polymers subject to said attack, such as parylene, by adding to perchloroethylene about 20 to about 1000 ppm of a stabilizer having the general formula ##STR1## The preferred concentration of the stabilizer is about 40 to about 500 ppm. Also disclosed is an electrical apparatus containing copper or organic polymer subject to attack by perchloroethylene and perchloroethylene containing the stabilizer.Type: GrantFiled: August 31, 1982Date of Patent: January 3, 1984Assignee: Westinghouse Electric Corp.Inventors: Robert A. Kurz, Anthony J. Palumbo
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Patent number: 4418231Abstract: 2-Alkylidene-1,3-dioxolanes and 2-(1-alkylalkylidene)-1,3-dioxolanes are employed as acid acceptors in methylchloroform, trichloroethylene or mixtures thereof. The preferred acid acceptor is 2-methylene-1,3-dioxolane.In another aspect of the invention, aliphatic aldehyde hydrazone is employed to stabilize 2-alkylidene-1,3-dioxolane and 2-(1-alkylalkylidene)-1,3-dioxolane. The preferred aliphatic aldehyde hydrazone is acetaldehyde dimethylhydrazone.Type: GrantFiled: August 7, 1981Date of Patent: November 29, 1983Assignee: PPG Industries, Inc.Inventor: Steven E. Pamer
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Patent number: 4392000Abstract: The invention relates to compositions of chlorinated solvents such as 1,1,1-trichloroethane, stabilized by means of a heterocyclic compound containing oxaziridine units, such as 2-tert.-butyloxaziridine.Type: GrantFiled: October 19, 1981Date of Patent: July 5, 1983Assignee: Solvay & Cie.Inventors: Andre' Ryckaert, Michel Servais
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Patent number: 4376221Abstract: Dibromostyrene is stabilized against unwanted polymerization by incorporating therein a stabilizing amount of a phenylene diamine such as N,N,N',N'-tetramethylphenylene-p-diamine or N,N'-diethylphenylene-p-diamine.Type: GrantFiled: March 13, 1980Date of Patent: March 8, 1983Inventor: Philip F. Jackisch
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Patent number: 4347154Abstract: Certain substituted succinic acid, e.g., sodium alkenyl succinate, and substituted imidazoline derivatives, e.g., (ethoxypropionic acid) imidazoline, provide corrosion resistance for tin-plated steel and solvent stability to aerosol formulations containing alcohol, methylene chloride and water, which employ a hydrocarbon as the propellant.Type: GrantFiled: October 23, 1980Date of Patent: August 31, 1982Assignee: The Dow Chemical CompanyInventor: Robert W. Simmons
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Patent number: 4343956Abstract: Dibromostyrene has a marked tendency to polymerize on storage. The induction period can be lengthened with the use of a stabilizing quantity of n-propylgallate. The induction period can be markedly prolonged when the gallate ester is admixed with phenothiazine, N,N,N',N'-tetramethyl-p-phenylenediamine, or 4-tert-butyl catechol.Type: GrantFiled: June 18, 1981Date of Patent: August 10, 1982Assignee: Ethyl CorporationInventor: Philip F. Jackisch
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Patent number: 4231968Abstract: Addition of 0.2-2 weight % of 2-methyl-2,3-epoxypropanol-(1), and preferably also 0.2-2% of methyl tert-butyl ether, produces highly stabilized 1,1,1-trichloroethane.Type: GrantFiled: January 22, 1979Date of Patent: November 4, 1980Assignee: Chemische Werke Huls AktiengesellschaftInventors: Leonhardt Magiera, Raban Grundmann, Dieter Krockenberger