Phenol Or Quinone Radical Containing Patents (Class 252/404)
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Patent number: 5304314Abstract: Sulfur-containing ester derivatives of arylamines and hindered phenols have been found to be effective antioxidant and antiwear additives for lubricants.Type: GrantFiled: December 27, 1991Date of Patent: April 19, 1994Assignee: Mobil Oil CorporationInventors: Shih-Ying Hsu, Andrew G. Horodysky
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Patent number: 5300257Abstract: Tetrakis(2,4-di-tert-butyl-5-methylphenyl)-4,4'-biphenylenediphosphonite, stabilizers for organic materials, which contain said compound, and stabilized organic materials containing said compound as a stabilizer. The tetrakis(2,4-di-tert-butyl-5-methylphenyl)-4,4'-biphenylenediphosphonite has particularly superior hydrolysis resistance, and is characterized in that it has superior storage stability due to its scarce hygroscopicity. It can be purified and handled easily since it is in a powder form, and it shows less volatility at high temperatures. By using the compound of the present invention as a stabilizer for organic materials, extremely useful organic materials imparted with superior processing stability, heat resistance and resistance to oxidative degradation can be provided.Type: GrantFiled: May 27, 1992Date of Patent: April 5, 1994Assignee: Yoshitomi Pharmaceutical Industries, Ltd.Inventors: Hiroyuki Akashi, Takeshi Inoue, Tetsuji Ike, Hidaka Yasuhiro, Shoichi Horie
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Patent number: 5300256Abstract: Solid form additive systems which are dispersible in aqueous media are disclosed, as are methods for preparing such additive systems and methods for dispersing such additive systems in aqueous media. Also disclosed are methods for applying additives to polymeric particles and the polymeric particles treated by such methods.Type: GrantFiled: October 5, 1992Date of Patent: April 5, 1994Assignee: Eastman Chemical CompanyInventor: Mahendra K. Sharma
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Patent number: 5268113Abstract: Lubricants can be stabilized against oxidation by the addition ofa) a sterically hindered amine andb) a phenol of formula I ##STR1## wherein A, is hydrogen, alkyl, cycloalkyl, phenylalkyl, phenyl or alkylthiomethyl, B is alkyl, cycloalkyl, phenylalkyl, phenyl or alkylthiomethyl and X is hydrogen, alkyl or substituted alkyl. It is preferred to use phenols of formula I which contain a thioether group.Type: GrantFiled: August 20, 1992Date of Patent: December 7, 1993Assignee: Ciba-Geigy CorporationInventor: Samuel Evans
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Patent number: 5256333Abstract: A stabilizer composition useful as an additive for polyether polyols, particularly those employed in the manufacture of polyurethane foams, is provided which comprises a diarylamine, a sterically hindered phenol and a pentaerythritol diphosphite.Type: GrantFiled: March 25, 1993Date of Patent: October 26, 1993Assignee: Uniroyal Chemical Company, Inc.Inventors: Lawrence B. Barry, Mark C. Richardson
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Patent number: 5252289Abstract: Water-soluble 1,2-dithiole-3-thione derivatives are prepared by reacting a polyoxyalkylated starting material with sulfur. These derivatives are useful as corrosion inhibitors, particularly in aqueous environments.Type: GrantFiled: January 11, 1993Date of Patent: October 12, 1993Assignee: Petrolite CorporationInventor: Bernardus A. Oude Alink
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Patent number: 5243016Abstract: Polymers and copolymers having high glass transition temperature and which are soluble in organic solvents are produced from highly hindered biphenols, in particular polyetherketones, polyethersulfones, polyesters and polyetherimides, as well as copolymers based on these polymers may be produced for a variety of applications.Type: GrantFiled: October 22, 1992Date of Patent: September 7, 1993Inventors: Allan S. Hay, Whan Gi Kim
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Patent number: 5238606Abstract: The invention relates to the use of certain styrenated diphenylamine and hindered phenol compositions for the stabilization of polyether polyols.Type: GrantFiled: September 28, 1990Date of Patent: August 24, 1993Assignee: Uniroyal Chemical Company, Inc.Inventors: Bruce W. Downs, Paul E. Stott, Lawrence B. Barry, Mark C. Richardson
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Patent number: 5221461Abstract: A method for inhibiting fouling during the elevated temperature processing of hydrocarbon comprising adding to the hydrocarbon a composition comprising a catechol having the structure: ##STR1## wherein R is H or C.sub.1 -C.sub.10 alkyl and, an organic acid.Type: GrantFiled: June 9, 1992Date of Patent: June 22, 1993Assignee: Betz Laboratories, Inc.Inventors: Inge K. Henrici, Dwight K. Reid
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Patent number: 5219892Abstract: Polyether polyols and polyurethane foams are stabilized by including therein a stabilizer composition of (a) tetrakis[methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamate)]methane and (b) a reaction product of diphenylamine and diisobutylene wherein the molar ratio of the amine to the diisobutylene is 1:1.1 to 1:2.5. The stabilizer composition may contain a third synergistic component, phenothiazine or certain alkyl derivatives of phenothiazine. The stabilizer composition may further contain trihydrocarbyl phosphite to stabilize the color of same.Type: GrantFiled: June 16, 1992Date of Patent: June 15, 1993Assignee: R. T. Vanderbilt Company, Inc.Inventor: Richard A. Suhoza
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Patent number: 5196142Abstract: Storage-stable, non-sedimenting emulsions comprisinga) 10 to 80% by weight, based on the emulsion, of one or more anti-oxidants,b) 0.25 to 10% by weight, based on the emulsion, of a surfactant in the form of a fatty acid salt of formula R-COOY, wherein R is straight chain or branched C.sub.3 -C.sub.18 alkyl or straight chain or branched C.sub.3 -C.sub.18 -alkenyl, or is phenyl(C.sub.3 -C.sub.18)alkyl, and Y is an alkali metal, which salt is prepared in situ from the fatty acid,c) 0.25 to 10% by weight, based on the emulsion, of a co-surfactant in the form of an alcohol of the general formula R'--OH, wherein R' is straight chain or branched C.sub.4 -C.sub.19 alkyl or straight chain or branched C.sub.4 -C.sub.19 alkenyl, or is phenyl(C.sub.4 -C.sub.19)alkyl, andd) water to make up 100%.The emulsions are used for stabilizing emulsion-polymerized polymers and copolymers such as ABS.Type: GrantFiled: August 2, 1991Date of Patent: March 23, 1993Assignee: Ciba-Geigy CorporationInventors: Hans Mollet, Martin Holer
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Patent number: 5182358Abstract: Polymers and copolymers having high glass transition temperature and which are soluble in organic solvents are produced from highly hindered biphenols, in particular polyetherketones, polyethersulfones, polyesters and polyetherimides, as well as copolymers based on these polymers may be produced for a variety of applications.Type: GrantFiled: April 11, 1991Date of Patent: January 26, 1993Inventors: Allan S. Hay, Whan Gi Kim
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Patent number: 5175349Abstract: The present invention relates to the use of nucleus-substituted 4-hydroxyphenyl propionic acid compounds for stabilizing organic polyisocyanates.Type: GrantFiled: March 1, 1991Date of Patent: December 29, 1992Assignee: Bayer AktiengesellschaftInventors: Pramod Gupta, Christian Konig, Hans-Jurgen Rabe, Hans-Wilhelm Engels, Wilfried Nolte, Chiraranjan Podder
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Patent number: 5169564Abstract: A composition which is thermooxidatively stable is provided which comprises a normally thermooxidatively unstable organic compound and effective amount of a thermooxidative stabilizing composition comprising an oil soluble sulfonate of a metal selected from barium, calcium, magnesium, zinc or a mixture of any of the foregoing; an effective amount of at least one primary antioxidant; optionally an effective amount of a secondary antioxidant; and optionally a carrier for the thermooxidative stabilizing composition. A thermooxidative stabilizing composition and a method for stabilizing a normally unstable organic compound comprising the addition of an effective amount of the thermooxidative stabilizing composition are provided as well.Type: GrantFiled: April 21, 1989Date of Patent: December 8, 1992Assignee: King Industries, Inc.Inventors: Lawrence V. Gallacher, Alfen J. Gustavsen, Robert L. Kugel
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Patent number: 5156759Abstract: A lubricating composition has been found which has particular utility in gas compressors. The composition comprises a polyalphaolefin base oil, an ester oil solubilizer, antioxidants and metal passivators. The composition replaces a mineral oil formulation and demonstrates comparable thermal and oxidative stability in the absence of sulfur, phosphorous and metal additives.Type: GrantFiled: May 13, 1991Date of Patent: October 20, 1992Assignee: Texaco Inc.Inventor: Douglas H. Culpon, Jr.
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Patent number: 5156768Abstract: R12, which contains chlorine, and hydrogen-contributing lubricants react to form acids such as hydrogen chloride and hydrogen fluoride and simultaneously, R12 is converted to R22. Such reactions are undesirable because the acids which form destroy the metallic components of a refrigeration system and cause the breakdown of the lubricants.The present invention provides a compositions for use in compression refrigeration and air-conditioning which substantially reduce the occurrence of the foregoing problem.Type: GrantFiled: April 5, 1991Date of Patent: October 20, 1992Assignee: Allied-Signal Inc.Inventors: Raymond H. P. Thomas, Ruth H. Chen, Kenneth Harris
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Patent number: 5155244Abstract: A method of solubilizing a first compound in a second medium where the first compound has a limited solubility in the second medium. In particular, the method comprises reacting the first compound with the second medium. By this reaction, a product is formed whereby an active component of the first compound is covalently incorporated into the second medium.The first compound and second medium each contain at least one reactive group which will react with a reactive group of the other. In addition, the first compound comprises at least one antioxidant which will be covalently bonded to and thus effectively solubilized in the second medium by the reaction.The second medium comprises glyceride derivatives, silicones, fluorocarbons and alkoxylates containing reactive groups such as hydroxy, amino, carboxyl, ester, or amides.Type: GrantFiled: February 28, 1990Date of Patent: October 13, 1992Assignee: Karlshamns ABInventors: George H. Greene, James C. Phillips, Jerry F. Stults, Jan P. E. Tellings
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Patent number: 5147604Abstract: A method is disclosed for reducing the oxygen content of water using a hydrazine-free dioxo aromatic compound or organically-substituted derivative thereof.Type: GrantFiled: September 6, 1988Date of Patent: September 15, 1992Assignee: Betz Laboratories, Inc.Inventors: Stanley J. Ciuba, John A. Muccitelli
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Patent number: 5133900Abstract: A composition which is thermooxidatively stable is provided which comprises a normally thermooxidatively unstable organic compound and effective amount of a thermooxidative stabilizing composition comprising an oil soluble sulfonate of a metal selected from barium, calcium, magnesium, zinc or a mixture of any of the foregoing; an effective amount of a stabilizer comprising an alkali or alkaline earth metal or zinc soap of an alkyl or alkenyl succinic acid, a partial ester thereof or a mixture of the foregoing; an effective amount of at least one primary antioxidant; optionally an effective amount of a secondary antioxidant; and optionally a carrier for the thermooxidative stabilizing composition. A thermooxidative stabilizing composition and a method for stabilizing a normally unstable organic compound comprising the addition of an effective amount of the thermooxidative stabilizing composition are provided as well.Type: GrantFiled: April 21, 1989Date of Patent: July 28, 1992Assignee: King Industries, Inc.Inventors: Lawrence V. Gallacher, Alfen J. Gustavsen, Robert L. Kugel
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Patent number: 5128398Abstract: A compound represented by the formula of: ##STR1## wherein R is hydrogen or methyl. This compound is useful as a stabilizer for butadiene polymers.Type: GrantFiled: February 12, 1990Date of Patent: July 7, 1992Assignee: Sumitomo Chemical Company, LimitedInventors: Manji Sasaki, Shinichi Yachigo, Kikumitsu Inoue, Shinya Tanaka, Takeshi Takata, Kanako Ida
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Patent number: 5094814Abstract: A combination product containing (a) dihydroxyacetone, (b) hydroquinone, and (c) a volatile amine that is capable of removing oxygen and neutralizing carbon dioxide in industrial waters, particularly boiler waters, including boiler feed waters, internal boiling waters, condensate waters, and return waters. The combination product preferably contains weight ratios of ingredients (a):(b):(c) ranging from 1:0.01:0.1 to about 1:1:100, and may additionally contain a filming amine.Type: GrantFiled: June 15, 1990Date of Patent: March 10, 1992Assignee: Nalco Chemical CompanyInventors: Cynthia A. Soderquist, Mei-Jan L. Lin
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Patent number: 5078892Abstract: Phenol and alkyl substituted phenols of the formula: ##STR1## wherein R is hydrogen or alkyl of from 1 to about 20 carbon atoms which significantly reduce the viscosity of and metal salt precipitation from liquid lubricating stabilizer compositions and unexpectedly improve the heat stability of such liquid lubricating and stabilizing compositions.Type: GrantFiled: March 11, 1991Date of Patent: January 7, 1992Assignee: Morton International, Inc.Inventors: George F. Beekman, Keith A. Mesch
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Patent number: 5071592Abstract: An improvement in the process of incorporating a modifier ingredient into the surface region of a resinous article is described herein. The basic process includes immersing the article in a liquid such as water and contacting the immersed article with a solution of a modifier ingredient in a solvent which is immiscible with the liquid. The improvement herein comprises removing a substantial amount of air dissolved in the water layer to prevent droplets of solution from rising to the surface of the water layer during the process, thereby preventing solid modifier material from accumulating on the water surface.Type: GrantFiled: May 24, 1990Date of Patent: December 10, 1991Assignee: M&T Chemicals Inc.Inventors: Neal D. Conrad, Joseph Silbermann
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Patent number: 5069819Abstract: The present invention relates to thioesters having the structural formula: ##STR1## wherein R.sup.x is selected from the group of formulae consisting of: ##STR2## R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group of radicals consisting of hydrogen or methyl; R.sup.4 and R.sup.5 are independently selected from the group of radicals consisting of hydrogen, alkyls having 1 to 18 carbon atoms, aryls having 6 to 10 carbon atoms, aralkyls having 7 to 9 carbon atoms, and radicals of the formula: ##STR3## and R.sup.6 is selected from the group of radials consisting of alkyls having 1 to 24 carbon atoms, aryls having 6 to 12 carbon atoms and aralkyls having 7 to 12 carbon atoms.These thioesters are particularly useful as a synergist for conventional phenolic and amine antioxidants.Type: GrantFiled: September 10, 1990Date of Patent: December 3, 1991Assignee: The Goodyear Tire & Rubber CompanyInventors: Budd H. Sturm, Joseph A. Kuczkowski
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Patent number: 5059347Abstract: Storage-stable, non-sedimenting emulsions comprisinga) 10 to 80% by weight, based on the emulsion, of one or more antioxidants,b) 0.25 to 10% by weight, based on the emulsion, of a surfactant in the form of a fatty acid salt of formula R-COOY, wherein R is straight chain or branched C.sub.3 -C.sub.18 alkyl or straight chain or branched C.sub.3 -C.sub.18 -alkenyl, or is phenyl(C.sub.3 -C.sub.18)alkyl, and Y is an alkali metal, which salt is prepared in situ from the fatty acid,c) 0.25 to 10% by weight, based on the emulsion, of a co-surfactant in the form of an alcohol of the general formula R'--OH, wherein R' is straight chain or branched C.sub.4 -C.sub.19 alkyl or straight chain or branched C.sub.4 -C.sub.19 alkenyl, or is phenyl(C.sub.4 -C.sub.19)alkyl, andd) water to make up 100%.The emulsion are used for stabilizing emulsion-polymerized polymers and copolymers such as ABS.Type: GrantFiled: August 17, 1989Date of Patent: October 22, 1991Assignee: Ciba-Geigy CorporationInventors: Hans Mollet, Martin Holer
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Patent number: 5047461Abstract: A butadiene polymer composition containing a phenolic compound represented by the formula: ##STR1## wherein R.sub.1 is an alkyl having 1 to 4 carbon atoms;R.sub.2 and R.sub.3 are each independently a group represented by --C(CH.sub.3).sub.2 --R' in which R' is an alkyl having 1 to 5 carbon atoms or phenyl, andR.sub.4 is hydrogen or methyl,and a sulfur-containing compound represented by the formula:(R.sub.5 --S--CH.sub.2 CH.sub.2 COOCH.sub.2).sub.4 Cwherein R.sub.5 is an alkyl having 4 to 20 carbon atoms. The composition is stable against the thermal deterioation and discoloration in the absence of oxygen as well as against the thermal and oxidative deterioration in the presence of oxygen.Type: GrantFiled: December 23, 1988Date of Patent: September 10, 1991Assignee: Sumitomo Chemical Company, LimitedInventors: Takeshi Takata, Shinichi Yachigo, Manji Sasaki, Kikumitsu Inoue, Shinya Tanaka
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Patent number: 5045233Abstract: A method for inhibiting polymerization of a maleimide, which comprises adding to said maleimide, as a polymerization inhibitor, at least one compound selected from the group consisting of thiodipropionic esters, 4-t-butyl-catechol, 2,4-dimethyl-6-t-butyl phenol, 2,5-di-t-butylhydroquinone, 2-t-butyl-hydroquinone, 2,4-bis-(n-octylthio)-6-(4-hydroxy-3,5-di-t-butylanilino)-1,3,5-trizaine, 2,2'-thiobis-(4-methyl-6-t-butylphenol), 4,4'-thiobis-(6-butyl-m-cresol), and triethyleneglycol-bis-[3-(3-t-butyl-5-methyl-4-hydroxyphenyl)propionate].Type: GrantFiled: October 30, 1987Date of Patent: September 3, 1991Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Yuichi Kita, Kentaro Sakamoto, Masao Baba, Tomoaki Tobo
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Patent number: 5045581Abstract: A butadiene polymer composition containing a phenolic compound represented by the formula: ##STR1## wherein R.sub.1 is an alkyl having 1 to 4 carbon atoms, R.sub.2 and R.sub.3 are each independently a group represented by --C(CH.sub.3).sub.2 --R' in which R' is an alkyl having 1 to 5 carbon atoms or phenyl, and R.sub.4 is hydrogen or methyl, and a phosphorus-containing compound represented by the formula: ##STR2## wherein R.sub.5 and R.sub.6 are each independently an alkyl having 1 to 9 carbon atoms.The composition is stable against the thermal deterioration and discoloration in the absence of oxygen as well as against the exposure to oxides of nitrogen gas.Type: GrantFiled: December 21, 1988Date of Patent: September 3, 1991Assignee: Sumitomo Chemical Company, LimitedInventors: Takeshi Takata, Shinichi Yachigo, Manji Sasaki, Kikumitsu Inoue, Shinya Tanaka
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Patent number: 5041485Abstract: Dispersions of stabilizers for plastics in water which contain special reaction products of diols and carboxylic acid anhydrides as auxiliary emulsifiers, and which are characterized by simple preparation, stability and good effectiveness in chemical materials.Type: GrantFiled: July 23, 1990Date of Patent: August 20, 1991Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Karl-Erwin Piejko, Christian Lindner, Adolf Schmidt, Karl-Heinz Ott
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Patent number: 5034156Abstract: A new and improved polymerization inhibitor composition, its method of manufacture, and its use in stabilizing the distillation of acrylic acid is made possible by the pre-oxygen-activation of N-nitrosophenylhydroxylamine in combination with hydroquinone mono-methyl-ether (often referred to as p-methoxyphenol) whereupon a synergistic performance of these components is disclosed.Type: GrantFiled: January 8, 1990Date of Patent: July 23, 1991Assignee: Mallinckrodt Specialty Chemicals CompanyInventor: John W. Varwig
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Patent number: 5023235Abstract: An antioxidant system comprises at least one ascorbyl ester stabilized with at least one complexing agent and at least one thiol. The antioxidant system is usefully employed in fatty body containing compositions such as cosmetic or alimentary compositions.Type: GrantFiled: February 8, 1988Date of Patent: June 11, 1991Assignee: L'OrealInventors: Quang L. N'Guyen, Jacqueline Griat, Francois Millecamps
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Patent number: 5006599Abstract: The present invention relates to a method for stabilizing a polyether polyol having a molecular weight of from about 300 to about 10,000 comprising adding 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid as an antioxidant stabilizer, optionally in combination with other antioxidants, to said polyether polyol. This invention further relates to polyols stabilized by the method of this invention and to stabilized polyurethanes prepared from such stabilized polyols.Type: GrantFiled: December 14, 1989Date of Patent: April 9, 1991Assignee: Bayer AktiengesellschaftInventors: Pramod Gupta, Hans-Wilhelm Engels, Hansjurgen Rabe
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Patent number: 4983654Abstract: This invention is directed to a stabilizer useful to retard transesterification in moldable polymer blends containing polyester(s) during processing of the blends at elevated temperatures, particularly at high temperatures above about 285.degree. C. More particularly, the stabilizer comprises a phosphate-epoxy adduct. The stabilizer may optionally further comprise a reactive functionality component comprising a compound having a imide or oxazoline functionality and/or a hindered phenol component. The invention is also directed to a composition comprising the stabilizer and a particularly defined polymer blend.Type: GrantFiled: December 28, 1987Date of Patent: January 8, 1991Assignee: Ford Motor CompanyInventors: Mo-Fung Cheung, Amos Golovoy, Henk van Oene
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Patent number: 4965326Abstract: Process for inhibiting and for stopping radical induced polymerizations which employs an aromatic hydroxy dithiocarboxylic acid or salt thereof as stopping agent for deactivating radicals, thereby precluding the formation of carcinogenic nitrosamines.Type: GrantFiled: September 21, 1989Date of Patent: October 23, 1990Assignee: Bunawerke Huls GmbHInventors: Gerhard Horpel, Joachim Pangratz
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Patent number: 4963276Abstract: Composition containing at least one lubricant, for example based on mineral oils, synthetic oils or mixtures thereof or a hydraulic fluid and a mixture of one or more compounds from series (A) and one or more compounds from series (B), the compounds of series (A) having the general formula ##STR1## and the compounds of series (B) having the general formula ##STR2## in which the radicals R.sup.1 and R.sup.1 ' are, for example, --H or alkyl having 1 to 24 C atoms and n is 0, 1 or 2, R.sup.2 and R.sup.3 are, for example, --H, alkyl having 1 to 24 C atoms or phenyl or R.sup.2 and R.sup.3 together are an alkylene group, and R.sup.4 is, for example, an alkyl group having 4-18 C atoms or a radical ##STR3## in which R.sup.5 can be an alkyl group, and R.sup.4' is an alkylene group and Y is O or S. The mixture imparts a high stability towards oxidative degradation to lubricant compositions.Type: GrantFiled: December 15, 1988Date of Patent: October 16, 1990Assignee: Ciba-Geigy CorporationInventor: Samuel Evans
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Patent number: 4957956Abstract: A solid stabilizer composition for organic polymers is formed by a solid, continuous phase and by a dispersed phase in said continuous phase, wherein the continuous phase is constituted by amorphous tetrakis-[3-(3,5-di-tert.-butyl-4-hydroxyphenyl)-propionyloxymethyl]-metha ne and the dispersed phase is constituted by an either amorphous or crystalline organic phosphite, in the form of particles with a particle size of from 10 .mu.m to 2 mm, with the weight ratio of said continuous phase to said dispersed phase being comprised within the range of from 9:1 to 1:9.The processes for preparing said solid stabilizer composition and its use in the stabilization of organic polymers are disclosed.Type: GrantFiled: February 11, 1988Date of Patent: September 18, 1990Assignee: Enichem Synthesis S.p.A.Inventors: Carlo Neri, Nereo Nodari, Erik Bersanetti, Giovanni Sandre
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Patent number: 4935205Abstract: A method of inhibiting corrosion of iron or iron-based alloys which are in contact with an aqueous system by introducing and maintaining within the system at least one ortho dihydroxyaromatic compound having at least one electron withdrawing group pendant from the aromatic ring.Type: GrantFiled: June 10, 1988Date of Patent: June 19, 1990Assignee: W. R. Grace & Co.-Conn.Inventors: Robert P. Kreh, Joseph T. Lundquist, Wayne L. Henry
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Patent number: 4929364Abstract: An aqueous concentrate useful for treating boiler waters to scavenge oxygen therefrom which contains at least 0.3% by weight of either gallic acid or propyl gallate. This aqueous concentrate has a pH adjusted to at least 8.5 by a water-soluble neutralizing amine of the type used to treat boiler waters. Additionally, a method for treating boiler waters with an oxygen scavenger.Type: GrantFiled: November 4, 1988Date of Patent: May 29, 1990Assignee: Nalco Chemical CompanyInventors: Patricia A. Reardon, David A. Grattan
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Patent number: 4900469Abstract: A thickened cleaning composition for laundry products incorporates low levels of a fluorescent whitening agent or dye, a surfactant, an acidic pH adjusting agent and an insoluble peracid precursor. At the acidic pH, the fluorescent whitening agent precipitates as a colloidal particle, and is stabilized by associating with the surfactant, resulting in thickening. The precursor is stably suspended in its inactive form in the thickener, and provides oxidizing power as the corresponding peracid is formed when added to an alkaline wash or rinse solution. The composition preferably is formulated with an acidic soluble bleach source and most preferably with a peroxygen bleach.Type: GrantFiled: June 29, 1988Date of Patent: February 13, 1990Assignee: The Clorox CompanyInventors: James P. Farr, Daniel T. Carty
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Patent number: 4900468Abstract: Aqueous peroxide bleaching compositions that include surfactant, fluorescent whiteners and dyes are effectively stabilized by the addition of a heavy metal chelating agent and a free radical scavenging agent. Both agents must be present to achieve maximum stability. Particularly preferred chelating agents are the amino polyphosphonates. Particularly preferred free radical scavenging agents are the hydroxybenzenes and especially substituted phenols. Not only is the peroxide oxidizing agent stabilized, but surfactant, fluorescent whitener, and dye as well.Type: GrantFiled: January 11, 1988Date of Patent: February 13, 1990Assignee: The Clorox CompanyInventors: James D. Mitchell, James P. Farr
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Patent number: 4873074Abstract: Stable injection solutions of radiodiagnostic aids ready for use are obtained by addition to the organ- or tissue-specific carrier, before, during of after the labeling with the pertechnetate, of a compound of the formula: ##STR1## in which R denotes hydrogen, and R' denotes a sulpho- or a carboxymethyl group, or R and R' each denote a sulpho- or a carboxymethyl group, or a water-soluble salt thereof, as stabilizer. These compounds do not alter the specific organ or tissue distribution of the carrier.Type: GrantFiled: January 31, 1989Date of Patent: October 10, 1989Assignee: Solco BaselInventors: Han-Lie Chia, Horia Popescu, Gabrielle Boehmer
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Patent number: 4859355Abstract: A product of reaction suitable for use as a lubricant additive made by reacting a preformed Mannich base with a reactive hydrocarbyl amine, thiol or dithiophosphoric acid having at least one reactive hydrogen.Type: GrantFiled: January 23, 1989Date of Patent: August 22, 1989Assignee: Mobil Oil CorporationInventor: Sheldon Chibnik
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Patent number: 4857299Abstract: Stable injection solutions of radiodiagnostic aids ready for use are obtained by addition to the organ-or tissue-specific carrier, before, during or after the labeling with the pertechnetate, of a compound of the formula: ##STR1## in which R denotes hydrogen, and R' denotes a sulpho- or a carboxymethyl group, or R and R' each denote a sulpho- or a carboxymethyl group, or a water-soluble salt thereof, as stabilizer. These compounds do not alter the specific organ or tissue distribution of the carrier.Type: GrantFiled: November 25, 1987Date of Patent: August 15, 1989Assignee: Solco Basel AGInventors: Han-Lie Chia, Horia Popescu, Gabrielle Boehmer
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Patent number: 4853143Abstract: Bleach activator, bleach and detergent compositions comprising:(a) a peroxyacid bleach precursor having the general formula IAc--L Iwherein Ac is the acyl moiety of an organic carboxylic acid comprising an optionally substituted, linear or branched C.sub.6 -C.sub.20 alkyl or alkenyl moiety or a C.sub.6 -C.sub.20 alkyl-substituted aryl moiety and L is a leaving group, the conjugate acid of which has a pKa in the range from 4 to 13, and(b) an antioxidant.The compositions combine excellent stability, substrate-safety, water-dispersibility, granulometry and detergency performance.Type: GrantFiled: March 16, 1988Date of Patent: August 1, 1989Assignee: The Procter & Gamble CompanyInventors: Frederick E. Hardy, Frank Cselik, Alastair J. Pretty, Kenneth Young, Gerald Scott
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Patent number: 4843116Abstract: A cycloaliphatic epoxy compound in combination with a 2-hydroxy-substituted benzophenone compound and a polyalkyl-substituted dipiperidine compound provides a UV stabilizer that exhibits synergistic behavior. The compounds can be formulated into a composition that is coated on, or impregnated into, the surface of a plastic article or, alternatively, they can be incorporated into a thermoplastic composition which can be thereafter molded into a shaped article. The stabilizer combination succeeds in upgrading the resistance of polyphenylene ether resins and blends against the photo-deteriorative effects of sunlight and bright indoor light, for example, fluorescent lighting.Type: GrantFiled: March 17, 1986Date of Patent: June 27, 1989Assignee: General Electric CompanyInventor: Richard C. Bopp
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Patent number: 4836943Abstract: An oil containing a viscosity index improver of improved oxidative stability contains, as an anti-oxidant system 2,6-di-t-butylphenol and 1-3-aminopropyl-2-pipecoline.Type: GrantFiled: July 15, 1987Date of Patent: June 6, 1989Assignee: Texaco Inc.Inventors: Maria M. Kapuscinski, Christopher S. Liu, Ronald E. Jones, Larry D. Grina
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Patent number: 4829111Abstract: A stabilizer composition for synthetic resin is described comprising a piperazine derivative represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl group having from 12 to 20 carbon atoms or a 2,2,6,6-tetramethyl-4-piperidyl group; R.sub.3 and R.sub.4 each represents a hydrogen atom or a methyl group; and n and m each represents 2 or 3.A synthetic resin composition is also described comprising polyolefin and the aforesaid piperazine derivative.Type: GrantFiled: February 2, 1988Date of Patent: May 9, 1989Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Kazuyuki Iida, Hiroyuki Omori, Akiyoshi Oonishi, Masami Takahashi
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Patent number: 4829115Abstract: This invention is concerned with the stabilization of organic materials subject to oxidative degradation. The synergists of this invention possess organothioethyl alcohol segmers or moieties which enhance the antioxidative activity of phenolic and amine stabilizers. The invention is also concerned with compounds that contain an organothioethyl alcohol moiety and their use in oxidizable materials in combination with polymerizable and/or conventional antidegradants.Type: GrantFiled: March 3, 1988Date of Patent: May 9, 1989Assignee: The Goodyear Tire & Rubber CompanyInventor: Kirkwood S. Cottman
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Patent number: 4806580Abstract: Stabilizer mixtures for stabilizing plastics comprising one part by weight of a chroman derivative (I) of the general formula ##STR1## where R= ##STR2## where Z=C.sub.7 -C.sub.30 -alkyl, --CH.sub.2 CH.sub.2 --S--[C.sub.1 -C.sub.30 -alkyl] or ##STR3## and from 5 to 14 parts by weight of an organic phosphite of the general formula (II) ##STR4## where R.sup.1, R.sup.2 and R.sup.3 are identical of different alkyl and/or aryl or of an organic phosphonite of the formula (III) ##STR5## where +is C(CH.sub.3).sub.3, a mixing ratio (a):(b) of from 1:6 to 1:10 being preferred.Type: GrantFiled: October 9, 1987Date of Patent: February 21, 1989Assignee: BASF AktiengesellschaftInventors: Gustav Bock, Hubert Trauth, Wilhelm Weber, Peter Lechtken
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Patent number: 4797218Abstract: Compounds of the formula I ##STR1## in which R.sub.1 and R.sub.2, independently, denote alkyl with 1 to 6 carbon atoms, cycloalkyl with 5 to 8 carbon atoms, allyl, methallyl, aralkyl with 5 to 9 carbon atoms, phenyl, 1- or 2-naphthyl, or alkaryl with 7 to 9 carbon atoms, R.sub.2 moreover also denotes hydrogen, R.sub.3 denotes hydrogen, alkyl with 1 to 6 carbon atoms, unsubstituted phenyl or phenyl substituted by one or two chlorine atoms and/or one or two methyl groups, B denotes a hetero atom, the group --OC(O)--, --OC(O)--CH.sub.2 CH.sub.2 -- or a direct bond, m is an integer from 0 to 6, and n is an integer from 1 to 6, are prepared by reaction of a thioglycerol derivative with a carboxylic acid containing the hindered phenol moiety in the presence of an acid and are used as antioxidants and thermal stabilizers for lubricating oils, plastics, resins and other organic substrates.Type: GrantFiled: August 18, 1986Date of Patent: January 10, 1989Assignee: Ciba-Geigy CorporationInventors: David H. Steinberg, Frank Cortolano