Sulphur Organic Compound Containing Patents (Class 252/402)
  • Patent number: 5266320
    Abstract: 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: Grant
    Filed: February 14, 1992
    Date of Patent: November 30, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Holderbaum, Alexander Aumueller, Hubert Trauth
  • Patent number: 5250592
    Abstract: 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: Grant
    Filed: December 23, 1992
    Date of Patent: October 5, 1993
    Assignee: Ciba-Geigy Corporation
    Inventor: Peter Nesvadba
  • Patent number: 5238606
    Abstract: The invention relates to the use of certain styrenated diphenylamine and hindered phenol compositions for the stabilization of polyether polyols.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: August 24, 1993
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Bruce W. Downs, Paul E. Stott, Lawrence B. Barry, Mark C. Richardson
  • Patent number: 5238980
    Abstract: 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: Grant
    Filed: December 17, 1992
    Date of Patent: August 24, 1993
    Assignee: Phillips Petroleum Company
    Inventor: Kenneth W. Willcox
  • Patent number: 5219478
    Abstract: 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: Grant
    Filed: December 12, 1991
    Date of Patent: June 15, 1993
    Assignee: Exxon Research and Engineering Co.
    Inventors: Jacob J. Habeeb, Morton Beltzer
  • Patent number: 5205945
    Abstract: 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: Grant
    Filed: October 18, 1991
    Date of Patent: April 27, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Angeline B. Cardis, Arjun K. Goyal, Virginia C. Wiszniewski
  • Patent number: 5202470
    Abstract: 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: Grant
    Filed: November 19, 1990
    Date of Patent: April 13, 1993
    Inventor: Erich Ruf
  • Patent number: 5200101
    Abstract: 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: Grant
    Filed: June 24, 1991
    Date of Patent: April 6, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Shin-Ying Hsu, Andrew G. Horodysky, Douglas E. Johnson, David A. Blain
  • Patent number: 5194167
    Abstract: Quaternary ammonium salts of mercaptothiadiazoles and related heterocyclic derivatives have been found to be effective antioxidant and antiwear additives for lubricants and fuels.
    Type: Grant
    Filed: May 8, 1991
    Date of Patent: March 16, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Shih-Ying Hsu, Andrew G. Horodysky
  • Patent number: 5186850
    Abstract: 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: Grant
    Filed: July 9, 1992
    Date of Patent: February 16, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Abraham O. M. Okorodudu, Angeline B. Cardis, Ross A. Kremer
  • Patent number: 5180510
    Abstract: 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: Grant
    Filed: March 31, 1988
    Date of Patent: January 19, 1993
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Edward F. Zaweski, Scott A. Culley
  • Patent number: 5178783
    Abstract: This invention describes lubricant compositions comprising phenothiazine derivatives which are N-substituted and which contain an additional sulfur molecule in the N substituent.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: January 12, 1993
    Assignee: The Lubrizol Corporation
    Inventor: Mary F. Salomon
  • Patent number: 5178784
    Abstract: This invention describes phenothiazine derivatives which are N-substituted and which contain an additional sulfur molecule in the N substituent.
    Type: Grant
    Filed: June 4, 1991
    Date of Patent: January 12, 1993
    Assignee: The Lubrizol Corporation
    Inventor: Mary F. Salomon
  • Patent number: 5169564
    Abstract: 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: Grant
    Filed: April 21, 1989
    Date of Patent: December 8, 1992
    Assignee: King Industries, Inc.
    Inventors: Lawrence V. Gallacher, Alfen J. Gustavsen, Robert L. Kugel
  • Patent number: 5160666
    Abstract: 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: Grant
    Filed: April 2, 1990
    Date of Patent: November 3, 1992
    Assignee: Riedel-De Haen AG
    Inventors: Wolfgang Lindner, Hans-Ulrich Neuber, Erich Taschenbrecker
  • Patent number: 5147569
    Abstract: 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: Grant
    Filed: September 4, 1990
    Date of Patent: September 15, 1992
    Assignee: Texaco Inc.
    Inventors: Thomas F. DeRosa, Benjamin J. Kaufman, Rosemary J. Jennejahn
  • Patent number: 5103054
    Abstract: 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: Grant
    Filed: March 15, 1991
    Date of Patent: April 7, 1992
    Assignee: Ethyl Corporation
    Inventor: Vincent J. Gatto
  • Patent number: 5102934
    Abstract: 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: Grant
    Filed: March 15, 1991
    Date of Patent: April 7, 1992
    Assignee: Ethyl Corporation
    Inventor: Vincent J. Gatto
  • Patent number: 5089227
    Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: February 18, 1992
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Patent number: 5075383
    Abstract: 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: Grant
    Filed: December 17, 1990
    Date of Patent: December 24, 1991
    Assignee: Texaco Inc.
    Inventors: Cyril A. Migdal, Theodore E. Nalesnik, Nicholas Benfaremo, Christopher S. Liu
  • Patent number: 5073301
    Abstract: 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: Grant
    Filed: July 12, 1990
    Date of Patent: December 17, 1991
    Assignee: Degussa Aktiengesellschaft
    Inventors: Hans U. Suess, Wilfried Eul
  • Patent number: 5069805
    Abstract: 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: Grant
    Filed: September 14, 1990
    Date of Patent: December 3, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Adalbert Braig, Hans-Rudolf Meier, David G. Leppard, Robert C. Wasson, Emyr Phillips
  • Patent number: 5069819
    Abstract: 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: Grant
    Filed: September 10, 1990
    Date of Patent: December 3, 1991
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Budd H. Sturm, Joseph A. Kuczkowski
  • Patent number: 5059689
    Abstract: 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: Grant
    Filed: January 30, 1989
    Date of Patent: October 22, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Jean Rody, Gerhard Rytz, Mario Slongo
  • Patent number: 5045233
    Abstract: 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: Grant
    Filed: October 30, 1987
    Date of Patent: September 3, 1991
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Yuichi Kita, Kentaro Sakamoto, Masao Baba, Tomoaki Tobo
  • Patent number: 5035817
    Abstract: This invention described phenothiazine derivatives which are N-substituted and which contain an additional sulfur molecule in the N substituent.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: July 30, 1991
    Assignee: The Lubrizol Corporation
    Inventor: Mary F. Salomon
  • Patent number: 5023235
    Abstract: 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: Grant
    Filed: February 8, 1988
    Date of Patent: June 11, 1991
    Assignee: L'Oreal
    Inventors: Quang L. N'Guyen, Jacqueline Griat, Francois Millecamps
  • Patent number: 4976889
    Abstract: 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: Grant
    Filed: November 14, 1988
    Date of Patent: December 11, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Alexander Aumueller, Peter Neumann, Hubert Trauth
  • Patent number: 4965326
    Abstract: 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: Grant
    Filed: September 21, 1989
    Date of Patent: October 23, 1990
    Assignee: Bunawerke Huls GmbH
    Inventors: Gerhard Horpel, Joachim Pangratz
  • Patent number: 4929659
    Abstract: 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: Grant
    Filed: July 14, 1988
    Date of Patent: May 29, 1990
    Assignee: Ciba-Geigy Corporation
    Inventor: Ramanathan Ravichandran
  • Patent number: 4927552
    Abstract: 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: Grant
    Filed: July 17, 1989
    Date of Patent: May 22, 1990
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventor: William Y. Lam
  • Patent number: 4927925
    Abstract: 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: Grant
    Filed: October 13, 1988
    Date of Patent: May 22, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Giuseppe Cantatore, Valerio Borzatta
  • Patent number: 4927930
    Abstract: 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: Grant
    Filed: May 24, 1989
    Date of Patent: May 22, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Giuseppe Cantatore, Valerio Borzatta, Franca Masina
  • Patent number: 4921893
    Abstract: 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: Grant
    Filed: December 3, 1987
    Date of Patent: May 1, 1990
    Assignee: Sandoz Ltd.
    Inventor: Lajos Avar
  • Patent number: 4920107
    Abstract: 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: Grant
    Filed: March 29, 1988
    Date of Patent: April 24, 1990
    Assignee: Buckman Laboratories International, Inc.
    Inventors: John D. Pera, S. Rao Rayudu
  • Patent number: 4915858
    Abstract: This invention describes compositions containing nitrogen, sulfur and optionally oxygen which are useful as antioxidants for lubricants.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: April 10, 1990
    Assignee: The Lubrizol Corporation
    Inventor: Mary F. Salomon
  • Patent number: 4915873
    Abstract: 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: Grant
    Filed: March 22, 1988
    Date of Patent: April 10, 1990
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Gerald J. Abruscato, Paul E. Stott
  • Patent number: 4908144
    Abstract: 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: Grant
    Filed: December 30, 1988
    Date of Patent: March 13, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Robert H. Davis, Liehpao O. Farng, Andrew G. Horodysky
  • Patent number: 4906393
    Abstract: Mixed phenol/dimercaptothiadiazole-derived hydroxythioether borates have been found to be effective antiwear/antioxidant multifunctional additives for lubricants.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: March 6, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Liehpao O. Farng, Andrew G. Horodysky, William F. Olszewski
  • Patent number: 4885150
    Abstract: 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: Grant
    Filed: October 13, 1988
    Date of Patent: December 5, 1989
    Assignee: The Dow Chemical Company
    Inventor: Steven L. Brewster
  • Patent number: 4877541
    Abstract: 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: Grant
    Filed: December 11, 1987
    Date of Patent: October 31, 1989
    Assignee: Exxon Research and Engineering Company
    Inventors: Max J. Wisotsky, Stephen J. Metro
  • Patent number: 4836942
    Abstract: 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: Grant
    Filed: June 6, 1988
    Date of Patent: June 6, 1989
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventor: William Y. Lam
  • Patent number: 4810786
    Abstract: 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: Grant
    Filed: April 8, 1986
    Date of Patent: March 7, 1989
    Assignee: Nitto Chemical Industry Co., Ltd.
    Inventors: Shoichi Kanda, Zengiro Kawamura
  • Patent number: 4810736
    Abstract: 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: Grant
    Filed: December 7, 1987
    Date of Patent: March 7, 1989
    Assignee: Morton Thiokol, Inc.
    Inventor: Jeffrey R. Hyde
  • Patent number: 4808644
    Abstract: 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: Grant
    Filed: January 29, 1987
    Date of Patent: February 28, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: John D. Spivack, Ramanathan Ravichandran, Stephen D. Pastor
  • Patent number: 4806130
    Abstract: 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: Grant
    Filed: December 21, 1987
    Date of Patent: February 21, 1989
    Assignee: Mobil Oil Corporation
    Inventor: Sheldon Chibnik
  • Patent number: 4798684
    Abstract: This invention describes compositions containing nitrogen, sulfur and optionally oxygen which are useful as antioxidants for lubricants.
    Type: Grant
    Filed: June 9, 1987
    Date of Patent: January 17, 1989
    Assignee: The Lubrizol Corporation
    Inventor: Mary F. Salomon
  • Patent number: 4793987
    Abstract: 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: Grant
    Filed: April 25, 1986
    Date of Patent: December 27, 1988
    Assignee: Amersham International plc
    Inventors: Alan Henderson, Kenneth S. Bowler
  • Patent number: 4780492
    Abstract: 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: Grant
    Filed: December 22, 1986
    Date of Patent: October 25, 1988
    Assignee: Sandoz Ltd.
    Inventor: Lajos Avar
  • Patent number: 4776981
    Abstract: 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: Grant
    Filed: August 24, 1987
    Date of Patent: October 11, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Kress, Klaus Kircher