Sulphur Organic Compound Containing Patents (Class 252/402)
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Patent number: 5266320Abstract: The use of an aminovinyl-substituted heterocyclic compound of the general formula I ##STR1## in which R.sup.1 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, or halogen, and, if more than one radical R.sup.1 are present, these may be the same or different,R.sup.2 denotes cyano or C.sub.1 -C.sub.20 -alkoxycarbonyl or C.sub.3 -C.sub.6 -cycloalkoxycarbonyl,R.sup.3 denotes hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.1 -C.sub.18 -alkoxy, halogen, cyano, C.sub.1 -C.sub.20 -alkoxycarbonyl, or C.sub.3 -C.sub.6 -cycloalkoxycarbonyl, and, if more than one radical R.sup.3 are present, these may be the same or different,X denotes NH, O or S,m is equal to 1 or 2, andn is an integer from 1 to 5,as a stabilizer for organic materials.Type: GrantFiled: February 14, 1992Date of Patent: November 30, 1993Assignee: BASF AktiengesellschaftInventors: Martin Holderbaum, Alexander Aumueller, Hubert Trauth
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Patent number: 5250592Abstract: Compositions comprising an organic material liable to thermal, oxidative and/or actinic degradation and at least one compound of the formula (I) ##STR1## are described in which R is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkoxy, halogen, nitro, phenyl-C.sub.1 -C.sub.4 alkoxy, C.sub.2 -C.sub.18 alkanoyl, benzoyl, (C.sub.1 -C.sub.6 alkyl)benzoyl, C.sub.2 -C.sub.18 alkenoyl, --N(R.sub.7)(R.sub.7a), --OH or --CO-A, R.sub.1 has the same possibilities of meaning as R, R.sub.2 is hydrogen or C.sub.1 -C.sub.4 alkyl and R.sub.3 is hydrogen or halogen, A is hydroxyl, C.sub.1 -C.sub.18 alkoxy, C.sub.5 -C.sub.12 cycloalkoxy, benzyloxy or benzyloxy substituted by C.sub.1 -C.sub.4 alkyl and/or halogen, --N(R.sub.7)(R.sub.7a), --NH--NH--R.sub.8 or leads to di-, tri- or tetrameric ring systems containing rings of the formula I via a bridging member, and in which R.sub.5 and R.sub.Type: GrantFiled: December 23, 1992Date of Patent: October 5, 1993Assignee: Ciba-Geigy CorporationInventor: Peter Nesvadba
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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: 5238980Abstract: A stereoregular, branched-mono-lolefin polymer composition that has reduced corrosion tendencies is provided. This polymer composition comprises:(a) a stereoregular, branched-mono-1-olefin polymer;(b) tris(3,5-di-t-butyl-40hydroxybenzyl)isocyanurate;(c) poly[[6-[(1,1,3,3-tetramethylbutyl)amino]-s-triazine-2,-4-diyl][(2,2,6,6-t etramethyl-4-piperidyl)imino]hexamethylene-[(2,2,6,6-tetramethyl-4-piperidy l)imino]]; and(d) a hydrocarbylsulfide.Type: GrantFiled: December 17, 1992Date of Patent: August 24, 1993Assignee: Phillips Petroleum CompanyInventor: Kenneth W. Willcox
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Patent number: 5219478Abstract: The addition of an O-alkyl-N-alkoxycarbonylthionocarbamate salt of dithiobenzoic acid to a lubricating oil imparts antiwear and/or antioxidation performance to the oil.Type: GrantFiled: December 12, 1991Date of Patent: June 15, 1993Assignee: Exxon Research and Engineering Co.Inventors: Jacob J. Habeeb, Morton Beltzer
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Patent number: 5205945Abstract: A multifunctional antioxidant, antiwear and dispersancy additive for fuels and lubricants is a reaction product of a thiol-substituted diazole, such as aminomercaptothiadiazole (AMTD) or dimercaptothiadiazole (DMTD), an aldehyde and a hydrocarbon-substituted succinimide dimer. The succinimide dimer is derived from polyisobutenyl succinimide and tetraethylenepentamine which are reacted in a mole ratio of 2:1.Type: GrantFiled: October 18, 1991Date of Patent: April 27, 1993Assignee: Mobil Oil CorporationInventors: Angeline B. Cardis, Arjun K. Goyal, Virginia C. Wiszniewski
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Patent number: 5202470Abstract: The invention provides a compound of the formula[NH.sub.2 NH.sub.2 ].sub.a [C.sub.6 H.sub.3 (COOH) (SO.sub.3 H) (OH)].sub.bwhereina is 1 andb is from 1 to 2.The compound is useful for stabilizing tin (II) compounds against oxidation, in particular in the electrolytic coloring of aluminium or aluminium alloys.Type: GrantFiled: November 19, 1990Date of Patent: April 13, 1993Inventor: Erich Ruf
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Patent number: 5200101Abstract: Arylamine/hindered phenol, acid anhydride and thioester-derived reaction products, have been found to be effective multifunctional antioxidant, antiwear and rust inhibiting additives for lubricants and fuels.Type: GrantFiled: June 24, 1991Date of Patent: April 6, 1993Assignee: Mobil Oil CorporationInventors: Shin-Ying Hsu, Andrew G. Horodysky, Douglas E. Johnson, David A. Blain
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Patent number: 5194167Abstract: Quaternary ammonium salts of mercaptothiadiazoles and related heterocyclic derivatives have been found to be effective antioxidant and antiwear additives for lubricants and fuels.Type: GrantFiled: May 8, 1991Date of Patent: March 16, 1993Assignee: Mobil Oil CorporationInventors: Shih-Ying Hsu, Andrew G. Horodysky
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Patent number: 5186850Abstract: The incorporation of the heterocyclic dimercaptothiadiazole functionality into the alkenylsuccinimide dispersant structures via the Mannich alkylaminomethylkation procedure provides a class of ashless non-phosphorus dispersants with multifunctional antiwear, antioxidant and corrosion inhibitor properties in lubricant compositions.Type: GrantFiled: July 9, 1992Date of Patent: February 16, 1993Assignee: Mobil Oil CorporationInventors: Abraham O. M. Okorodudu, Angeline B. Cardis, Ross A. Kremer
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Patent number: 5180510Abstract: An additive for improving the antioxidation properties of lubricating oil is made by reacting a sulfur halide selected from sulfur monochloride or sulfur dichloride with an aliphatic monoolefin (e.g. isobutene) to form an adduct, reacting the adduct thus formed with an alkali metal salt of an organocarbamodithioic acid in an aqueous alkanol medium and recovering the reaction product.When added to lubricating oil, the additive products of the invention improve the antioxidation properties of the lubricating oil.Type: GrantFiled: March 31, 1988Date of Patent: January 19, 1993Assignee: Ethyl Petroleum Additives, Inc.Inventors: Edward F. Zaweski, Scott A. Culley
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Patent number: 5178783Abstract: This invention describes lubricant compositions comprising phenothiazine derivatives which are N-substituted and which contain an additional sulfur molecule in the N substituent.Type: GrantFiled: April 6, 1992Date of Patent: January 12, 1993Assignee: The Lubrizol CorporationInventor: Mary F. Salomon
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Patent number: 5178784Abstract: This invention describes phenothiazine derivatives which are N-substituted and which contain an additional sulfur molecule in the N substituent.Type: GrantFiled: June 4, 1991Date of Patent: January 12, 1993Assignee: The Lubrizol CorporationInventor: Mary F. Salomon
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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: 5160666Abstract: Liquid preservative compositions which are particularly useful for plastics dispersions and secondary products prepared therefrom are disclosed. These compositions comprise mixtures of 1,2-benzisothiazolin-3-one or a salt thereof and at least one alkyl(polyaminoalkyl)glycine compound.Type: GrantFiled: April 2, 1990Date of Patent: November 3, 1992Assignee: Riedel-De Haen AGInventors: Wolfgang Lindner, Hans-Ulrich Neuber, Erich Taschenbrecker
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Patent number: 5147569Abstract: A polymeric additive prepared from ethylene and at least one (C.sub.3 -C.sub.10) alpha-monoolefin and a non-conjugated dienes or triene comprising from about 15 to 80 mole percent of ethylene and from about 20 to 85 mole percent of the (C.sub.3 -C.sub.10) alpha-monoolefin and from about 0 to 15 mole percent of the diene or triene. This polymeric substrate has a number average molecular weight ranging from about 5,000 to about 500,000. It is modified by reacting the polymer with an unsaturated epoxide wherein the intermediate graft co- or terpolymer is characterized as having pendant epoxides within the substrate.Post-reacting this graft co- or terpolymer with 1,3,4-thiadiazine modified with substituted phenols, diaryl amines, or phenophiazines generates a polymeric lubricant additive with enhanced anti-oxidant, dispersant, and anti-wear properties.Type: GrantFiled: September 4, 1990Date of Patent: September 15, 1992Assignee: Texaco Inc.Inventors: Thomas F. DeRosa, Benjamin J. Kaufman, Rosemary J. Jennejahn
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Patent number: 5103054Abstract: Tertiary sulfonamides having utility as antioxidants are compounds corresponding to the formula: ##STR1## wherein R and R' are independently selected from alkyl, aryl, and benzyl groups, R" is an alkylene group containing 1-5 carbons, and n is an integer of 1-3.Type: GrantFiled: March 15, 1991Date of Patent: April 7, 1992Assignee: Ethyl CorporationInventor: Vincent J. Gatto
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Patent number: 5102934Abstract: Organic materials which are normallly susceptible to oxidative deterioration are stabilized with tertiary sulfonamide antioxidants corresponding to the formula: ##STR1## wherein R and R' are independently selected from alkyl, aryl, and benzyl groups, R" is an alkylene group containing 1-5 carbons, and n is an integer of 1-3.Type: GrantFiled: March 15, 1991Date of Patent: April 7, 1992Assignee: Ethyl CorporationInventor: Vincent J. Gatto
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Patent number: 5089227Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.Type: GrantFiled: June 30, 1989Date of Patent: February 18, 1992Assignee: Petrolite CorporationInventors: Neil E. S. Thompson, Robert G. Asperger
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Patent number: 5075383Abstract: An additive composition comprising a graft and amine-derivatized copolymer prepared from ethylene and at least one C.sub.3 to C.sub.10 alpha-monoolefin and, optionally, a polyene selected from non-conjugated dienes and trienes comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 to C.sub.10 alpha-monoolefin and from about 0 to 15 mole percent of said polyene, said copolymer having a number average molecular weight ranging from about 5,500 to 50,000 and having grafted thereon at least 1.8 molecules of a carboxylic acid acylating function per molecule of said copolymer and reacting said grafted copolymer with an amino-aromatic polyamine compound from the group consisting of an N-arylphenylenediamine, an aminocarbazole, an aminoindole, an amino-indazolinone, an aminomercaptotriazole, and an amino-perimidine to form said graft and amine-derivatized copolymer, and a lubricating oil composition containing same are provided.Type: GrantFiled: December 17, 1990Date of Patent: December 24, 1991Assignee: Texaco Inc.Inventors: Cyril A. Migdal, Theodore E. Nalesnik, Nicholas Benfaremo, Christopher S. Liu
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Patent number: 5073301Abstract: A process is described in which, by the addition of formamidinesulfinic acid in association with an ozone or ozone/oxygen treatment, the viscosity and strength of wood pulps are stabilized at the level that is obtained with use of conventional, chlorine-containing bleaching processes.Type: GrantFiled: July 12, 1990Date of Patent: December 17, 1991Assignee: Degussa AktiengesellschaftInventors: Hans U. Suess, Wilfried Eul
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Patent number: 5069805Abstract: Compounds of the formula I ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have the meaning given in claim 1 are formed by thermal rearrangement of the isomers of formula V ##STR2## especially in the presence of basic catalysts. The compounds are corrosion inhibitors for organic materials, in particular coating materials and lubricants. In these substrates they also act as antioxidants and light-stabilizers and are very stable to heat.Type: GrantFiled: September 14, 1990Date of Patent: December 3, 1991Assignee: Ciba-Geigy CorporationInventors: Adalbert Braig, Hans-Rudolf Meier, David G. Leppard, Robert C. Wasson, Emyr Phillips
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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: 5059689Abstract: Compounds which contain at least one group of the formula I ##STR1## in which X is a group which completes the ring to form a piperidine ring, are effective stabilizers for organic materials against damage by light, oxygen and heat.Type: GrantFiled: January 30, 1989Date of Patent: October 22, 1991Assignee: Ciba-Geigy CorporationInventors: Jean Rody, Gerhard Rytz, Mario Slongo
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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: 5035817Abstract: This invention described phenothiazine derivatives which are N-substituted and which contain an additional sulfur molecule in the N substituent.Type: GrantFiled: March 11, 1991Date of Patent: July 30, 1991Assignee: The Lubrizol CorporationInventor: Mary F. Salomon
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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: 4976889Abstract: 4-Formylaminopiperidine derivatives of the formula (I) ##STR1## where n is 1 or 2, R.sup.1 to R.sup.4 are each alkyl or R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 are tetra- or pentamethylene, R.sup.5 is hydrogen or alkyl, R.sup.6 is hydrogen, unsubstituted or substituted alkyl, alkenyl, aralkyl or acyl, and, when n is 1, Y is hydrogen, unsubstituted or substituted alkyl, alkenyl, cycloalkyl, bicycloalkyl, aralkyl, aryl, alkyl containing heterocyclic radicals, or ##STR2## or, when n is 2, Y is alkylene, cycloalkylene, aralkylene or arylene or is alkylene which is interrupted by oxygen, nitrogen, sulfur or a 5-membered or 6-membered heterocyclic structure, and their acid addition salts have very good stabilizing properties in plastics.Type: GrantFiled: November 14, 1988Date of Patent: December 11, 1990Assignee: BASF AktiengesellschaftInventors: Alexander Aumueller, Peter Neumann, Hubert Trauth
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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: 4929659Abstract: Substituted dibenzyl aminoxyethyl sulfoxides and sulfones of the formula ##STR1## are prepared by the reaction of the appropriate dibenzylhydroxylamine compound and the appropriate vinyl sulfoxide or sulfone, said compounds being useful as color improvers and stabilizers in various polymeric substrates.Type: GrantFiled: July 14, 1988Date of Patent: May 29, 1990Assignee: Ciba-Geigy CorporationInventor: Ramanathan Ravichandran
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Patent number: 4927552Abstract: Compounds having the formula: ##STR1## wherein: a. each of R, R.sup.2 and R.sup.4 when taken singly is a hydrogen atom, an alkyl group containing from 1 to about 15 carbon atoms, an aryl group containing from 6 to about 15 carbon atoms or a cycloalkyl group containing from 4 to about 10 carbon atoms;b. each of R.sup.1 and R.sup.3 when taken singly is a hydrogen atom, an alkyl group containing from 1 to about 15 carbon atoms; an aryl group containing from 6 to about 15 carbon atoms; a cycloalkyl group containing from 4 to about 10 carbon atoms or an alkenyl group containing from 2 to about 10 carbon atoms or R.sup.1 and R.sup.3 taken together form the group --CHYCY.dbd.CY-- in which Y is a hydrogen atom or a methyl group or R.sup.1 together with R.sup.2 form an alkylidene group containing from 1 to about 6 carbon atoms;c. R.sup.5 is a hydrogen atom or an alkyl group containing from 1 to about 15 carbon atoms;d. R.sup.Type: GrantFiled: July 17, 1989Date of Patent: May 22, 1990Assignee: Ethyl Petroleum Additives, Inc.Inventor: William Y. Lam
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Patent number: 4927925Abstract: Compounds of formula (I) ##STR1## in which R.sub.1 is hydrogen, O.sup.., CN, NO, cyanomethyl, C.sub.1 -C.sub.12 -alkyl, C.sub.3 -C.sub.12 -alkenyl or C.sub.3 -C.sub.12 -alkynyl subject to the proviso that the carbon atom attached to the nitrogen atom is a primary carbon atom, C.sub.7 -C.sub.12 -aralkyl, C.sub.1 -C.sub.12 -acyl, 2,3-epoxypropyl, OH-monosubstituted C.sub.2 -C.sub.6 -alkyl or 2,3-dihydroxypropyl, R.sub.2 is hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.18 -cycloalkyl, C.sub.6 -C.sub.18 -aryl or C.sub.7 -C.sub.18 -aralkyl, R.sub.3 is C.sub.6 -C.sub.18 -aryl or a group of the formula (II) ##STR2## in which R.sub.1 is as defined above, n is an integer from 1 to 4 and R.sub.4 is an organic or inorganic radical of a valency equal to n are useful for stabilizing organic material against oxidative, thermal and/or light induced degradation.Type: GrantFiled: October 13, 1988Date of Patent: May 22, 1990Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta
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Patent number: 4927930Abstract: The present invention relates to novel piperidyl-triazine compounds with 2 or more triazine rings, to their use as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, and to the organic materials thus stabilized.Type: GrantFiled: May 24, 1989Date of Patent: May 22, 1990Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta, Franca Masina
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Patent number: 4921893Abstract: both R.sub.1 's are CH.sub.3 or together form --CH.sub.2).sub.5 ;both R.sub.2 's are CH.sub.3 or together form --CH.sub.2).sub.5 ;R.sub.3 has a significance of R, independently of R, except for oxygen;X is --O--, --NH-- or ##STR2## m is an integer from 1 to 4 inclusive; R.sub.4 is a saturated or unsaturated aliphatic group unsubstituted or substituted by one or two groups selected from --OH and C.sub.1-4 alkoxy and which can be interrupted by an oxygen or sulphur atom; or an aromatic group unsubstituted or substituted by one or two groups selected from --OH, C.sub.1-4 alkyl and C.sub.1-4 alkoxy are useful as U.V. light stabilizers in polymeric organic compounds.Type: GrantFiled: December 3, 1987Date of Patent: May 1, 1990Assignee: Sandoz Ltd.Inventor: Lajos Avar
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Patent number: 4920107Abstract: A method of preserving an aqueous system which is susceptible to microbiological degradation, comprising the step of adding to the system a compound having the formula ##STR1## wherein X is an anion selected from the group consisting of sulfate, acetate and citrate groups, and wherein the compound is added in an amount sufficient to inhibit the growth and proleferation of at least one microogranism in the aqueous system.The compounds 1-methyl-3,5,7-triaza-1-azoniatricyclodecane acetate and 1-methyl-3,5,7-triaza-1-azoniatricyclodecane citrate, and a method for preparing these compounds comprising the reaction of ammonium citrate, or ammonium acetate, with methylamine, formaldehyde and ammonia in an aqueous medium.Type: GrantFiled: March 29, 1988Date of Patent: April 24, 1990Assignee: Buckman Laboratories International, Inc.Inventors: John D. Pera, S. Rao Rayudu
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Patent number: 4915858Abstract: This invention describes compositions containing nitrogen, sulfur and optionally oxygen which are useful as antioxidants for lubricants.Type: GrantFiled: June 23, 1988Date of Patent: April 10, 1990Assignee: The Lubrizol CorporationInventor: Mary F. Salomon
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Patent number: 4915873Abstract: Vinyl aromatic compounds are stabilized against polymerization by the addition of an effective amount of a polymerization inhibition composition comprising (a) a phenothiazine compound; and (b) an aryl-substituted phenylenediamine compound. In other aspects, this invention is directed to a vinyl aromatic composition stabilized against polymerization by such polymerization inhibitor composition, as well as to a method of stabilizing a vinyl aromatic composition against polymerization which method comprises adding an effective amount of such polymerization inhibitor composition.Type: GrantFiled: March 22, 1988Date of Patent: April 10, 1990Assignee: Uniroyal Chemical Company, Inc.Inventors: Gerald J. Abruscato, Paul E. Stott
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Patent number: 4908144Abstract: Reaction products of Dimercaptothiadiazole-derived alcohols and alkenyl succinic anhydrides and their subsequent amine reaction products have been found to be effective antiwear/antioxidant multifunctional additives for lubricants.Type: GrantFiled: December 30, 1988Date of Patent: March 13, 1990Assignee: Mobil Oil CorporationInventors: Robert H. Davis, Liehpao O. Farng, Andrew G. Horodysky
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Patent number: 4906393Abstract: Mixed phenol/dimercaptothiadiazole-derived hydroxythioether borates have been found to be effective antiwear/antioxidant multifunctional additives for lubricants.Type: GrantFiled: December 30, 1988Date of Patent: March 6, 1990Assignee: Mobil Oil CorporationInventors: Liehpao O. Farng, Andrew G. Horodysky, William F. Olszewski
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Patent number: 4885150Abstract: The present invention is a composition comprising (a) thiocyanogen or a thiocyanogen halide and (b) an .alpha.,.beta.-unsaturated ketone, e.g. chloranil, in solution in (c) an inert organic solvent. The composition is useful for the introduction of thiocyanate functionality into organic compounds in the same manner as thiocyanogen or thiocyanogen chloride, but is stable over longer periods of time, i.e. one year or more.Type: GrantFiled: October 13, 1988Date of Patent: December 5, 1989Assignee: The Dow Chemical CompanyInventor: Steven L. Brewster
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Patent number: 4877541Abstract: A corrosion inhibitor for use in synthetic ester lubricating oils is disclosed which comprises an effective amount of:1. at least one aromatic amide; and2. at least one hydroxy substituted aromatic compound.The corrosion inhibitor thus formed is particularly useful in synthetic ester turbo lubricating oils.Type: GrantFiled: December 11, 1987Date of Patent: October 31, 1989Assignee: Exxon Research and Engineering CompanyInventors: Max J. Wisotsky, Stephen J. Metro
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Patent number: 4836942Abstract: Compounds or mixtures of compounds having the formulae: ##STR1## wherein R is an alkyl group containing from 1 to 20 carbon atoms, n represents a number selected from the class consisting of zero and the integers from 1 through 6, R' represents a member selected from the group consisting of the hydrogen atom and those groups represented by R and R" is an aliphatic hydrocarbon group are effective antiwear and antioxidant additives in lubricating oils.Type: GrantFiled: June 6, 1988Date of Patent: June 6, 1989Assignee: Ethyl Petroleum Additives, Inc.Inventor: William Y. Lam
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Patent number: 4810786Abstract: A method of stabilizing an aqueous solution of xanthan gum is disclosed, comprising incorporating at least one stabilizing agent selected from thiol derivatives of heterocyclic compounds in an aqueous solution of xanthan gum.Type: GrantFiled: April 8, 1986Date of Patent: March 7, 1989Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Shoichi Kanda, Zengiro Kawamura
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Patent number: 4810736Abstract: Compositions comprising the combination of an organotin mercaptide and a polyformal of a dithiodiglycol are useful for stabilizing halogen-containing organic polymers against the deteriorative effects of heat, light and weathering.Type: GrantFiled: December 7, 1987Date of Patent: March 7, 1989Assignee: Morton Thiokol, Inc.Inventor: Jeffrey R. Hyde
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Patent number: 4808644Abstract: Substituted (4-hydroxyphenylthioalkyl) derivatives of the formula ##STR1## are prepared by the reaction of the appropriate ring and hydroxybenzene thiol compounds and are useful stabilizers of organic materials.Type: GrantFiled: January 29, 1987Date of Patent: February 28, 1989Assignee: Ciba-Geigy CorporationInventors: John D. Spivack, Ramanathan Ravichandran, Stephen D. Pastor
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Patent number: 4806130Abstract: 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: December 21, 1987Date of Patent: February 21, 1989Assignee: Mobil Oil CorporationInventor: Sheldon Chibnik
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Patent number: 4798684Abstract: This invention describes compositions containing nitrogen, sulfur and optionally oxygen which are useful as antioxidants for lubricants.Type: GrantFiled: June 9, 1987Date of Patent: January 17, 1989Assignee: The Lubrizol CorporationInventor: Mary F. Salomon
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Patent number: 4793987Abstract: A stabilizer for radioactively labelled organic compounds has the general formula ##STR1## where R is C1 to C4 alkylene which may be OH substituted, m is 0 or 1 (i.e. R may be absent or present), X is carboxyl or sulphonyl e.g. COOH or SO.sub.3 H or a salt thereof and n is 1, 2 or 3. Radiolabelled compounds of biological origin, such as nucleotides and amino acids, may be stabilized either in solution or in the freeze-dried state. For example, L-[.sup.35 S]methionine may be stabilized to prevent formation of a 47 KD band in protein transcription/translation experiments.Type: GrantFiled: April 25, 1986Date of Patent: December 27, 1988Assignee: Amersham International plcInventors: Alan Henderson, Kenneth S. Bowler
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Patent number: 4780492Abstract: A liquid concentrate comprising an oxamide and a 2,2,6,6-tetraalkylpiperidine compound dissolved in an organic solvent is useful for the UV-stabilization of hardenable liquid finishes, particularly automotive finishes.Type: GrantFiled: December 22, 1986Date of Patent: October 25, 1988Assignee: Sandoz Ltd.Inventor: Lajos Avar
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Patent number: 4776981Abstract: The present invention relates to phthalimide compounds of the formula (I) ##STR1## wherein X denotes H or halogen, for example chlorine or bromine,a and b independently of one another denote 0 or 1 andR denotes a C.sub.1 -C.sub.4 -alkyl radical,which, in combination with alkali metal salts, are suitable as flameproofing agent combinations for thermoplastic, branched, aromatic polycarbonates, and the preparation of these compounds.Type: GrantFiled: August 24, 1987Date of Patent: October 11, 1988Assignee: Bayer AktiengesellschaftInventors: Hans-Jurgen Kress, Klaus Kircher