Acyclic Nitro Containing Preservative Or Stabilizer Patents (Class 570/110)
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Patent number: 11280711Abstract: A method including placing a biological sample taken from a body into a chamber; adding a composition including an acetal solvent to the chamber; and fixating the biological sample. A method including placing a tissue from a body into a chamber; and contacting the tissue with a composition including an acetal solvent as a fixating process.Type: GrantFiled: October 8, 2018Date of Patent: March 22, 2022Assignee: Sakura Finetek U.S.A., Inc.Inventor: Amit D. Shah
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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: 20100288966Abstract: The present disclosure relates to compositions comprising at least one fluoroolefin and an effective amount of a stabilizer comprising at least one ascorbic acid, terephthalate, or nitromethane, or mixtures thereof. 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: Thomas J. Leck, Barbara Haviland Minor, Mario Joseph Nappa, Nandini C. Mouli, Jon Lee Howell
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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: 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: 5928431Abstract: The invention relates to a composition based on stabilized methylene chloride composed essentially of at least one 1,2-epoxyalkane and of at least one acetal, and preferably no nitroalkane.The composition according to the invention can be used for degreasing, cleaning and/or drying metal components.Type: GrantFiled: September 10, 1997Date of Patent: July 27, 1999Assignee: Elf Atochem S.A.Inventor: Pascal Michaud
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Patent number: 5739090Abstract: The invention relates to a composition based on stabilized methylene chloride composed essentially of at least one 1,2-epoxyalkane and of at least one acetal, and no nitroalkane.The composition according to the invention can be used for degreasing, cleaning and/or drying metal components.Type: GrantFiled: January 11, 1996Date of Patent: April 14, 1998Assignee: Elf Atochem S.A.Inventor: Pascal Michaud
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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: 5124503Abstract: The present invention provides stabilized compositions comprising dichlorotrifluoroethane and effective stabilizing amounts of alkanol having 4 or 5 carbon atoms, nitroalkane having 1 to 3 carbon atoms, and a third component of 1,2-epoxyalkane having 2 to 7 carbon atoms or phosphite ester. Stabilized dichlorotrifluoroethane is useful in a variety of vapor degreasing, cold cleaning, and solvent cleaning applications including defluxing.Type: GrantFiled: December 13, 1990Date of Patent: June 23, 1992Assignee: Allied-Signal Inc.Inventors: Chien C. Li, Kane D. Cook, Alfred A. Riederer
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Patent number: 4992604Abstract: 1,1,1-Trichloroethane (viz., methylchloroform) is stabilized with from about 2 to about 4 percent by weight 1,3-dioxolane, from about 0.25 to about 0.5 percent by weight butylene oxide, from about 0.25 to about 2 percent by weight nitromethane, from about 0.2 to about 0.75 percent by weight 1-nitropropane, from about 0.75 to about 2 percent by weight secondary butanol, and from 0 to about 100 parts per million by weight acetaldehyde dimethylhydrazone.Type: GrantFiled: July 24, 1989Date of Patent: February 12, 1991Assignee: PPG Industries, Inc.Inventors: Donald A. Reich, Catherine C. Doyen, Stephanie J. Oates
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Patent number: 4956017Abstract: A solvent, 1,1,1-trichloroethane, is stabilized against corrosion by the addition of a non-volatile polyether or complex polyether having an average molecular weight of from about 550 to about 8500. A painting formulation is prepared using the stabilized solvent.Type: GrantFiled: May 5, 1989Date of Patent: September 11, 1990Assignee: The Dow Chemical CompanyInventors: Felipe A. Donate, George E. Hartwell, Bruce D. DeBolt, James G. Papajesk, Mark V. Buzzard
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Patent number: 4861926Abstract: Stabilized 1,1,1-trichloroethane compositions containing an epoxide compound such as epoxybutane, a nitro compound such as nitromethane, a furan compound such as 2-methylfuran, and methyl acetate. These compositions are suitable for the degreasing of metals and for the dry cleaning of textiles in the presence of an aqueous phase.Type: GrantFiled: May 31, 1984Date of Patent: August 29, 1989Assignee: SOLVAY & Cie (Societe Anonyme)Inventor: Michel Servais
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Patent number: 4795837Abstract: A stabilized composition of 1,1,1-trichloroethane comprising an epoxide compound, a nitro compound, and a furan compound.Type: GrantFiled: March 6, 1984Date of Patent: January 3, 1989Assignee: Solvay & Cie (Societe Anonyme)Inventors: Michel Servais, Roger Crochet
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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: 4608448Abstract: Reaction of ferric chloride with 2-chloro-p-xylene yields dichloro-p-xylene having a high ratio of 2,5-dichloro-p-xylene isomer to 2,3-dichloro-p-xylene isomer.Type: GrantFiled: November 24, 1981Date of Patent: August 26, 1986Assignee: Union Carbide CorporationInventor: Young-Jin Lee
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Patent number: 4597890Abstract: Stable methylchloroform solvent compositions in combination with from about 3 to about 5 volume percent of 2-butanol and from about 1 to about 3 volume percent of 3-methyl-1-butyn-3-ol have been shown to be superior solvents for removing flux from circuit boards. Such compositions have no flash point and maintain excellent distribution of the components in the vapor and liquid sections of the defluxing apparatus.Type: GrantFiled: February 15, 1985Date of Patent: July 1, 1986Assignee: The Dow Chemical CompanyInventors: Susan M. Dallessandro, Wesley L. Archer, Stephen P. Krupp
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Patent number: 4394284Abstract: A nitroalkane-free inhibitor system for methylchloroform has been formulated which contains dioxane, an alkylene oxide, and 3-butyn-1-ol. The stabilizer amounts to about 4 to 6% by volume of the stabilized methylchloroform composition. The stabilized composition is useful in vapor degreasing applications when it additionally contains an alkyl nitrate.Type: GrantFiled: August 2, 1982Date of Patent: July 19, 1983Assignee: The Dow Chemical CompanyInventor: Alvetta Pryor
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Patent number: 4378303Abstract: An azeotropic solvent composition comprising about 64.6 to 89.0% by weight of tetrachlorodifluoroethane, about 3.7 to 34.2% by weight of an alcohol having carbon atoms of 1 to 5 and about 1.2 to 7.3% by weight of nitroethane.Type: GrantFiled: April 13, 1981Date of Patent: March 29, 1983Assignee: Daikin Kogyo Co., Ltd.Inventors: Iwao Hisamoto, Chiaki Maeda, Yukio Omure
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Patent number: 4356038Abstract: A solvent composition for cleaning metal and other articles which comprises 1,1,1-trichloroethane having dissolved therein a stabilizing amount of a mixture of stabilizing components comprising (i) tertiary butanol (ii) nitromethane and (iii) 1-or 2-nitropropane or nitroethane, in which mixture the specified stabilizing components are present in the mole fraction percent ranges encompassed by Contour K in FIG. 1 of the drawings in the case where component (iii) is 1-or 2-nitropropane or by Contour A in FIG. 2 of the drawing in the case where component (iii) is nitroethane.Type: GrantFiled: July 16, 1980Date of Patent: October 26, 1982Assignee: Imperial Chemical Industries LimitedInventors: David Bain, John E. Martin, John H. Saul, Neil Winterton
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Patent number: 4327232Abstract: A stabilized methylchloroform solvent useful in degreasing operations in which the alkylene oxide stabilizer component normally employed is replaced by a tricyclic or quadricyclic compound containing a fused cyclopropane ring.Type: GrantFiled: February 19, 1981Date of Patent: April 27, 1982Assignee: The Dow Chemical CompanyInventors: Alvetta Pryor, Nobuyuki Ishibe
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Patent number: 4324757Abstract: Metal alloys containing nickel are protected from denickelification upon exposure to halogenated hydrocarbons at elevated temperatures by the addition of a lower alkylcyanide in minor proportions to the halogenated hydrocarbon.Type: GrantFiled: July 2, 1979Date of Patent: April 13, 1982Assignee: The Dow Chemical CompanyInventors: John B. Ivy, Ted S. Boozalis
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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