Sulphur Organic Compound Containing Patents (Class 252/402)
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Patent number: 4758614Abstract: Substituted amino carbamate derivatives corresponding to the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants and/or metal salts of fatty acids and/or hindered amine light stabilizers and/or organic phosphorus compounds; and certain of said derivatives as new compounds.Type: GrantFiled: April 25, 1986Date of Patent: July 19, 1988Assignee: Ciba-Geigy CorporationInventors: Stephen D. Pastor, Edward T. Hessell, Ramanathan Ravichandran
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Patent number: 4738796Abstract: Process for the heat stabilization of alkyl alkoxyalkylidenemalonates in the presence of Lewis acids, such as metal catalytic compounds employed as catalysts during the preparation of the alkyl alkoxyalkylidenemalonates by condensation of a suitable malonate with a suitable ortho ester. The condensation reaction mixture is heated in the presence of a stabilizing compound selected from the group consisting of 8-hydroxyquinolines and organic acid phosphates in an amount sufficient to stabilize the alkyl alkoxyalkylidenemalonates against thermal decomposition.Type: GrantFiled: June 25, 1985Date of Patent: April 19, 1988Assignee: Rhone-Poulenc Specialites ChimiquesInventor: Serge Ratton
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Patent number: 4734449Abstract: Stabilizer systems containing at least two Ni-containing light-stabilizers in which nickel (which, in class 2, optionally contains an additional ligand) forms a complex compound with a compound selected from the group consisting of the classes:1. 2-hydroxy-4-alkoxybenzophenones2. 2,2'-thiobis[4-alkylphenols]3. 3,5-dialkyl-4-hydroxybenzoic acid monoalkyl esters4. 3,5-dialkyl-4-hydroxybenzylphosphonic acid monoalkyl esters5. 1-phenyl-3-methyl-4-acyl-5-hydroxypyrazole,in which the radicals generally contained are appropriately substituted. After being incorporated into the corresponding polyolefins, these stabilizer systems have a synergistic effect which prevents or at least greatly retards decomposition initiated by light and/or oxygen.Type: GrantFiled: August 7, 1986Date of Patent: March 29, 1988Assignee: Ciba-Geigy CorporationInventor: Francois Gugumus
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Patent number: 4724246Abstract: Substituted 1,3,4-oxathiazol-2-one derivatives of the formula ##STR1## and organic materials stabilized against oxidative, thermal and/or actinic degradation by the presence therein of said derivatives.Type: GrantFiled: December 10, 1986Date of Patent: February 9, 1988Assignee: Ciba-Geigy CorporationInventor: Ramanathan Ravichandran
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Patent number: 4719037Abstract: Piperidine derivatives represented by the general formula (1) ##STR1## (wherein R.sub.1 is a hydrogen atom, an alkyl group of 1 to 3 carbon atoms or an acyl group of 2 to 18 carbon atoms; and k, m and n each are independently an integer of 1 to 3), a process for producing said derivatives, and stabilizers for organic substances containing said derivatives as an active component.Type: GrantFiled: July 21, 1986Date of Patent: January 12, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Yukoh Takahashi, Yuzo Maegawa, Hiroki Yamamoto, Tatsuo Kaneoya, Haruki Okamura, Shinichi Yachigo, Tamaki Ishii
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Patent number: 4705642Abstract: A haze, oxidation, and corrosion resistant diesel engine lubricant composition, particularly useful in marine and railway diesel engines, contains 0.1-5.0 weight percent of a reaction product additive. The reaction product additive is produced by first reacting substantially equimolar amounts of an anhydride compound which is either a dibasic acid anhydride or isatoic anhydride and a hydrocarbon-substituted mono primary amine or ether amine at a temperature range of 50.degree. C.-150.degree. C. to produce an intermediate reaction product. The intermediate reaction product is thereafter further reacted at an elevated temperature with a substantially equimolar amount of a heterocyclic azole or polyalkylene polyamine compound to form the final reaction product.Type: GrantFiled: December 23, 1986Date of Patent: November 10, 1987Assignee: Texaco Inc.Inventors: Rodney L. Sung, Benjamin H. Zoleski, Ronald L. O'Rourke
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Patent number: 4612393Abstract: Bis(substituted thioalkyl)hydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the alkylated hydroxybenzoate light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosynergists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.Type: GrantFiled: April 29, 1985Date of Patent: September 16, 1986Assignee: Ciba-Geigy CorporationInventors: Ramanathan Ravichandran, John D. Spivack
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Patent number: 4607099Abstract: A method of stabilizing an aqueous solution of xanthan gum is described, comprising incorporating at least one stabilizing agent selected from the group consisting of 2-mercaptobenzimidazole and derivatives thereof in an aqueous solution of xanthan gum.Type: GrantFiled: December 3, 1984Date of Patent: August 19, 1986Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Shoichi Kanda, Jun Hosoda, Zengiro Kawamura
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Patent number: 4581149Abstract: Zwitterionic Quaternary ammonium sulfates, and sulfonates are provided as new compounds and as highly effective additives to lubricants and liquid fuels. They have a variety of desirable effects, among them being their ability to reduce friction in an internal combustion engine, thereby reducing the amount of fuel consumed.Type: GrantFiled: June 5, 1985Date of Patent: April 8, 1986Assignee: Mobil Oil CorporationInventors: Andrew G. Horodysky, Joan M. Kaminski
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Patent number: 4581150Abstract: Zwitterionic quaternary ammonium sulfates, and sulfonates are provided as new compounds and as highly effective additives to lubricants and liquid fuels. They have a variety of desirable effects, among them being their ability to reduce friction in an internal combustion engine, thereby reducing the amount of fuel consumed.Type: GrantFiled: June 5, 1985Date of Patent: April 8, 1986Assignee: Mobil Oil CorporationInventors: Andrew G. Horodysky, Joan M. Kaminski
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Patent number: 4568753Abstract: Improved rust-preventive compounds are provided which are strongly effective with both iron and copper metals. The compound of the invention comprise benzothiazole-substituted carboxylic acids, and their salts. Suitable salts may include alkali metal, alkaline earth metal, ammonium and substituted ammonium salts.Type: GrantFiled: November 18, 1983Date of Patent: February 4, 1986Assignee: Sanshin Kagaku Kogyo Co., Ltd.Inventors: Sumio Akashi, Katsushige Koge
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Patent number: 4566879Abstract: The invention provides certain salts of sulfurized carboxylic acids and diamines and their use as friction reducing additives in lubricants or fuels. They are also antioxidants and useful in operations where an additive not corrosive to copper is required.Type: GrantFiled: June 5, 1985Date of Patent: January 28, 1986Assignee: Mobil Oil CompanyInventor: Andrew G. Horodysky
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Patent number: 4547302Abstract: The present invention relates to novel borate esters synthesized from 2,2'-thiobis(alkylphenols) and thiobis(alkylnaphthols) which when incorporated into various hydrocarbyl lubricant compositions impart improved resistance to oxidation and concomitantly control the acidity and viscosity of such compositions.Type: GrantFiled: August 31, 1983Date of Patent: October 15, 1985Assignee: Mobil Oil CorporationInventor: Milton Braid, deceased
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Patent number: 4543337Abstract: A storage stable diagnostic reagent for colorimetric determination of urea nitrogen, the reagent having enhanced sensitivity, and comprises a chromogenic agent, a color enhancer, and a cyothioamine, as well as method employing said reagent.Type: GrantFiled: March 30, 1984Date of Patent: September 24, 1985Assignee: Technicon Instruments CorporationInventors: Sigrid G. Klotzsch, Richard Vadaszy
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Patent number: 4536309Abstract: Zwitterionic Quaternary ammonium sulfates, and sulfonates are provided as new compounds and as highly effective additives to lubricants and liquid fuels. They have a variety of desirable effects, among them being their ability to reduce friction in an internal combustion engine, thereby reducing the amount of fuel consumed.Type: GrantFiled: July 29, 1982Date of Patent: August 20, 1985Assignee: Mobil Oil CorporationInventors: Andrew G. Horodysky, Joan M. Kaminski
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Patent number: 4522735Abstract: Amines are reacted with phosphorous trichloride to form N-dichlorophosphinoamines that are then reacted with a bisphenol in about equimolar amounts to provide polyphosphoramidite oligomers. The polyphosphoramidite oligomers are effective as stabilizers for polymers such as polyolefins, and form even more efficient stabilizer combinations with hydroxyphenylalkyleneyl isocyanurates.Type: GrantFiled: June 17, 1983Date of Patent: June 11, 1985Assignee: The B. F. Goodrich CompanyInventor: Dwight W. Chasar
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Patent number: 4521320Abstract: The title compounds correspond to the formula ##STR1## and are useful as stabilizers for organic polymers and lubricating oils to counteract the degradative effects of heat, light and air.Type: GrantFiled: October 21, 1983Date of Patent: June 4, 1985Assignee: Ciba Geigy CorporationInventors: John D. Spivack, Stephen D. Pastor
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Patent number: 4495200Abstract: A process for the control of planktonic sulfate-reducing bacteria in industrial process water systems which comprises the step of treating said system with a dithiocarbamate of the formula: ##STR1## wherein R is a C.sub.1 to C.sub.4 alkyl radical, R.sup.1 is either a methylene or ethylene radical, n is 0, 1, 2, or 3 and X is a Group IA alkali metal.Type: GrantFiled: October 6, 1983Date of Patent: January 22, 1985Assignee: Phillips Petroleum CompanyInventors: Merlin R. Lindstrom, Leslie J. Henshaw, Harold W. Mark, James B. Clark
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Patent number: 4485022Abstract: Lubricating oils are protected against oxidation by the addition of a stabilizing amount of at least one n-alkyl substituted 2-thiazoline disulfide.Type: GrantFiled: August 24, 1983Date of Patent: November 27, 1984Assignee: Phillips Petroleum CompanyInventor: J. Ronald Spence
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Patent number: 4474985Abstract: A process for increasing the color-free shelf life of a crude N-acetyl aminophenol prepared by the acetylation of an aminophenol wherein the N-acetyl aminophenol contains color-forming impurities which are the products of oxidation of the aminophenol and other side reactions. The process comprises dissolving the crude N-acetyl aminophenol in a solvent containing a reducing agent, heating the solution at about the boiling point, crystallizing the N-acetyl aminophenol from the solution, washing the crystalline N-acetyl aminophenol with solvent containing reducing agent and thereafter separating and drying the crystalline N-acetyl aminophenol.Type: GrantFiled: January 31, 1983Date of Patent: October 2, 1984Assignee: Monsanto CompanyInventors: Billy L. Keel, Irvin S. Klaus, Marvin L. Oftedahl
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Patent number: 4466904Abstract: A compound and a process for utilizing the compound to prevent the polymerization of vinyl aromatic compounds, such as styrene, during heating. The compound includes effective amounts of phenothiazine, 4-tert-butylcatechol and 2,6-dinitro-p-cresol respectively, as a polymerization inhibitor system in the presence of oxygen resulting in a less viscous polymer tar and in the effective inhibition of polymerization to temperatures as high as 150.degree. C.Type: GrantFiled: January 10, 1983Date of Patent: August 21, 1984Assignee: Cosden Technology, Inc.Inventors: James M. Watson, James R. Butler, Karen A. Mikkelson
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Patent number: 4423004Abstract: Tantalum powder for electrolytic capacitors is treated with a non-aqueous solution of ammonium thiocyanate in N,N'-dimethylformamide or N-methylpyrrolidinone after the powder has been subjected to a thermal treatment in the absence of oxygen step and before the powder is exposed to an oxygen-containing fluid to prevent oxygen uptake by the powder. The thermal treatment step is carried out at 700.degree. C. and above.Type: GrantFiled: March 24, 1983Date of Patent: December 27, 1983Assignee: Sprague Electric CompanyInventor: Sidney D. Ross
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Patent number: 4421659Abstract: Zwitterionic quaternary ammonium sulfates of the formulas hereinafter disclosed are provided as new compounds and as effective lubricant and fuel additives. They are multifunctional, having, among others, the ability to reduce corrosion, oxidation and friction in, for example, an internal combustion engine and thereby to reduce fuel consumption.Type: GrantFiled: June 30, 1982Date of Patent: December 20, 1983Assignee: Mobil Oil CorporationInventors: Andrew G. Horodysky, Joan M. Kaminski
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Patent number: 4416797Abstract: Chlorinated organic compounds having their resistance to deterioration (when heated, exposed to light or water, or in contact with certain metals such as iron and aluminum) enhanced by a 1,3-dicarbonyl compound having the formula: ##STR1## wherein: R.sub.1 is selected from the group consisting of hydrogen, hydrocarbon groups having from one to about eighteen carbon atoms and such groups substituted with one or more groups selected from the group consisting of halogen, hydroxy, alkoxy OR.sub.1, ester COOR.sub.1, alkyl and alkoxycarbonyl alkyl having from one to about eighteen carbon atoms;R.sub.2 is selected from the group consisting of hydrocarbon groups having from one to about eighteen carbon atoms and such groups substituted with one or more groups selected from the group consisting of halogen, hydroxy, alkoxy OR.sub.1, ester COOR.sub.1, alkyl and alkoxycarbonyl alkyl having from one to about eighteen carbon atoms;R.sub.Type: GrantFiled: February 19, 1981Date of Patent: November 22, 1983Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Motonobu Minagawa, Tetsuyu Inoue, Naoyasu Kurita
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Patent number: 4414126Abstract: Compositions and method of using said compositions for inhibiting the corrosion of high lead solder in aqueous systems are disclosed. Alkali metal aliphatic phosphonates in combination with alkali metal mercaptobenzothiazoles are effective inhibitors for the corrosion of high lead solder in aqueous systems.Type: GrantFiled: October 22, 1981Date of Patent: November 8, 1983Assignee: BASF Wyandotte CorporationInventor: Joe C. Wilson
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Patent number: 4411805Abstract: A class of N,N',N"-trisubstituted bis-(p-aminobenzyl)anilines are found to be effective antioxidants in a broad spectrum of petroleum and petroleum related products. Trialkyl, tri(arylmethyl), and tri(heteroarylmethyl) substituted materials of the parent compound are especially effective at concentrations as low as about 0.0005 percent by weight.Type: GrantFiled: January 8, 1982Date of Patent: October 25, 1983Assignee: UOP Inc.Inventor: John T. Roberts
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Patent number: 4412024Abstract: Oxalanilides of formula I ##STR1## in which R is C.sub.6-22 alkyl or C.sub.6-22 alkoxyR.sub.1 and R.sub.2 are independently, hydrogen, C.sub.1-8 alkyl, C.sub.1-12 alkoxy, C.sub.1-12 alkylthio, phenoxy or phenylthio; provided that R.sub.1 and R.sub.2 may not both be selected from alkylthio, phenoxy and phenylthio;andR.sub.3 is hydrogen or C.sub.1-8 alkylcertain of which are novel, are useful as UV-stabilizers in organic polymers and organic polymer-containing coatings, particularly automotive finishes. The compounds have low volatility and excellent solubility in organic solvents such as are used in liquid finishes.Type: GrantFiled: September 14, 1981Date of Patent: October 25, 1983Assignee: Sandoz Ltd.Inventors: Lajos Avar, Evelyne Kalt, Hellmuth Reinshagen
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Patent number: 4405470Abstract: Product made by reacting a hindered phenol aldehyde with a primary amine followed by reacting the product thus obtained with a diorganophosphorodithioic acid, and lubricants containing same.Type: GrantFiled: January 22, 1982Date of Patent: September 20, 1983Assignee: Mobil Oil CorporationInventor: Abraham O. M. Okorodudu
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Patent number: 4389321Abstract: Lubricants stabilized against oxidative degradation by the incorporation therein of 2,3-dihydroperimidine derivatives as well as certain 2,3-dihydroperimidines within the indicated group.Type: GrantFiled: December 28, 1981Date of Patent: June 21, 1983Assignee: Ciba-Geigy CorporationInventor: Roger F. Malherbe
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Patent number: 4388215Abstract: A wood preservative composition comprising 2-mercaptobenzothiazole or its salt and 2,5-dichloro-4-bromophenol or its salt exerts an unexpected synergistic wood preservative effect against wood destroying fungi and termites.Type: GrantFiled: December 8, 1981Date of Patent: June 14, 1983Assignee: Sanyo Mokuzai Bofu Kabushiki KaishaInventors: Hideo Ishida, Masashi Kitada, Keisaku Ihara
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Patent number: 4388430Abstract: The invention relates to a combination of derivatives of dihydropyridine and .beta.-aminocrotonic acid derivatives intended for the stabilization of vinyl resins. The combination of a dihydropyridine derivative and a .beta.-aminocrotonic derivative gives rise to synergism of the stabilizing powers of each of those products.Type: GrantFiled: September 30, 1981Date of Patent: June 14, 1983Assignee: SanofiInventors: Paul de Cointet de Fillain, Charles Pigerol
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Patent number: 4386002Abstract: N-Arylmethylideneaminodiphenyl ethers are effective antioxidants for high pressure applications. The corresponding 4'-methoxy analogs, such as 4-benzylideneamino-4'-methoxydiphenyl ether and 2- and 4-pyridylmethylideneamino-4'-methoxydiphenyl ether, have particularly desirable properties.Type: GrantFiled: May 12, 1981Date of Patent: May 31, 1983Assignee: UOP Inc.Inventor: John T. Roberts
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Patent number: 4380497Abstract: N-Monosubstituted 2'- or 4'-amino-4-alkoxy-diphenyl ethers, where the N-substituent is an arylmethyl group, are effective antioxidants in a wide variety of petroleum products and petroleum related products. Within the class of arylmethyl groups, heteroaryl groups are especially desirable, as exemplified by pyridinylmethyl and thienylmethyl.Type: GrantFiled: May 12, 1981Date of Patent: April 19, 1983Assignee: UOP Inc.Inventor: John T. Roberts
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Patent number: 4378298Abstract: Imines of 2,4'-diaminodiphenyl ethers are effective antioxidants in petroleum and petroleum-related products. Especially desirable are 2,4'-bis-(N,N'-arylmethylideneamino)phenyl ethers, where the aryl moiety is a heteroaromatic group.Type: GrantFiled: May 12, 1981Date of Patent: March 29, 1983Assignee: UOP Inc.Inventor: John T. Roberts
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Patent number: 4375006Abstract: Dibromostyrene has a marked tendency to polymerize on storage. The induction period can be lengthened with the use of a stabilizing quantity of n-propylgallate. The induction period can be markedly prolonged when the gallate ester is admixed with phenothiazine, N,N,N',N'-tetramethyl-p-phenylenediamine, or 4-tert-butyl catechol.Type: GrantFiled: August 14, 1981Date of Patent: February 22, 1983Assignee: Ethyl CorporationInventor: Philip F. Jackisch
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Patent number: 4363745Abstract: Antioxidant compositions containing (a) a sterically hindered phenol, (b) 4,4'-bis(.alpha.,.alpha.-dimethylbenzyl) diphenyl amine and (c) a phenothiazine compound stabilize polyols against oxidative degradation and prevent urethane foams prepared therefrom from scorching.Type: GrantFiled: April 1, 1981Date of Patent: December 14, 1982Assignee: The Dow Chemical CompanyInventor: Kenneth J. Hinze
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Patent number: 4362831Abstract: Light and heat stabilizers for synthetic resin compositions and synthetic resin compositions containing such stabilizers are provided, comprising(1) at least one hindered and heterocyclic amine having the formula: ##STR1## wherein: X is a bivalent linking radical forming with the ring structure ##STR2## a nitrogen-containing heterocyclic ring having from five to seven ring atoms, preferably piperidine;R.sub.1 and R.sub.2 are each selected from the group consisting of lower alkyl, preferably methyl, and R.sub.1 and R.sub.2 taken together as pentylene (CH.sub.2).sub.5 ;R.sub.3 and R.sub.4 are each selected from the group consisting of lower alkyl, and R.sub.3 and R.sub.4 taken together as one of butylene--(CH.sub.2).sub.4, pentylene--(CH.sub.2).sub.5, and CH.sub.2 --C(CH.sub.3).sub.2 --NH--C(CH.sub.3).sub.2 --CH.sub.2 --;n is 1 or 2; andwhen n is 1, Y is selected from the group consisting of hydrogen, O.degree.Type: GrantFiled: December 7, 1979Date of Patent: December 7, 1982Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Toshio Ohzeki, Mitsuo Akutsu, Takanori Semba
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Patent number: 4338474Abstract: Dibromostyrene is stabilized against unwanted polymerization by incorporating therein a stabilizing amount of phenothiazine or a substituted phenothiazine such as 3,3'-dioctylphenothiazine. The phenolthiazine can be admixed with a dihydroxy aromatic compound such as 4-methyl catechol.Type: GrantFiled: March 13, 1980Date of Patent: July 6, 1982Assignee: Ethyl CorporationInventor: Philip F. Jackisch
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Patent number: 4330302Abstract: Liquid petroleum hydrocarbon blends having improved thermal stability at temperatures of 1000.degree. F. and higher are prepared by removing from the blends dissolved molecular oxygen and maintaining low levels of certain trace impurities in the blends. Trace impurity compounds that are maintained at low levels include: sulfur compounds classed as thiols, sulfides, disulfides and polysulfides; organic oxygen compounds classed as hydroperoxides, peroxides, paraffinic carboxylic acids, and phenols; nitrogen compounds classed as amides and alkyl-pyridines; and reactive olefins. Additional improvements in the blends can be obtained by providing them with a dibenzothiophene or a nitrogen compound classed as a paraffinic amine, carbazole or piperidine. The treated blends of this invention have substantially the same physical properties as similar blends that have not been so treated.Type: GrantFiled: August 28, 1975Date of Patent: May 18, 1982Assignee: Exxon Research & Engineering Co.Inventor: William F. Taylor
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Patent number: 4319063Abstract: Fouling of metallic surfaces contacted with petroleum oils at elevated temperatures is reduced by adding to the oil small amounts of an oil-soluble N-alkylamino-alkylbenzene sulfonate, a heterocyclic amine, and phenylhydrazine.Type: GrantFiled: November 6, 1978Date of Patent: March 9, 1982Assignee: Union Oil Company of CaliforniaInventors: Louis M. Dvoracek, Paul W. Fischer, Milan Skripek
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Patent number: 4309294Abstract: N,N'-disubstituted 2,4'-diaminodiphenyl ethers are a potent antioxidant for petroleum products and petroleum-related products. In particular, the N,N'-dibenzyl derivative and other aromatic and hetero-aromatic analogs of the dibenzyl derivatives exhibit desirable antioxidant properties at levels as low as about 0.05% by weight.Type: GrantFiled: July 24, 1980Date of Patent: January 5, 1982Assignee: UOP Inc.Inventor: John T. Roberts
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Patent number: 4284790Abstract: 3-Hydroxylbenzyl compounds of formula, ##STR1## in which each of R.sub.1, R.sub.2 and R.sub.3 is a hydrocarbon group, e.g. alkyl, R.sub.4 is hydrogen or alkyl, or forms with R.sub.1 --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --, and Z is either an oxygen- or sulphur-containing group featuring at least one ester or amide moiety, or a disubstituted amino group, Z being bound to the rest of the molecule via the oxygen or sulphur atom, or nitrogen atom, respectively, are useful as antioxidants. Organic materials which are susceptible to the degradative effects of oxygen are treated with one or more of such compounds, e.g. by incorporation into the body of the organic material, in order to be stabilized against such effects.Type: GrantFiled: January 23, 1979Date of Patent: August 18, 1981Assignee: Sandoz Ltd.Inventors: Hans Hinsken, Horst Mayerhoefer, Wolfgang Mueller
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Patent number: 4280894Abstract: Liquid petroleum hydrocarbon blends having improved thermal stability at temperatures of 1000.degree. F. and higher are prepared by removing from the blends dissolved molecular oxygen and maintaining low levels of certain trace impurities in the blends. Trace impurity compounds that are maintained at low levels include: sulfur compounds classed as thiols, sulfides, disulfides and polysulfides; organic oxygen compounds classed as hydroperoxides, peroxides, paraffinic carboxylic acids, and phenols; nitrogen compounds classed as amides and alkyl-pyridines; and reactive olefins. Additional improvements in the blends can be obtained by providing them with a dibenzothiophene or a nitrogen compound classed as a paraffinic amine, carbazole or piperidine. The treated blends of this invention have substantially the same physical properties as similar blends that have not been so treated.Type: GrantFiled: June 4, 1975Date of Patent: July 28, 1981Assignee: Exxon Research & Engineering Co.Inventor: William F. Taylor
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Patent number: 4279805Abstract: Alkylene bis-thioalkanoic acid amide stabilizers are provided, as well as synthetic resin compositions containing the same, having the general formula: ##STR1## wherein: R.sub.1 is alkyl having from one to about fifty carbon atoms,R.sub.2 is alkylene having from one to about three carbon atoms; andR.sub.3 is alkylene having from two to about twelve carbon atoms.Type: GrantFiled: December 7, 1979Date of Patent: July 21, 1981Assignee: Argus Chemical CorporationInventors: Toshio Ohzeki, Takanori Semba
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Patent number: 4272571Abstract: A process for preserving substantially any variety of flower while retaining the natural colors thereof, in which the flower is immersed in an essentially water-free composition comprising: at least one dehydrating alcohol, a carboxylic acid, a urea-containing compound, an alkaline citrate, and zero to an effective amount of at least one of a silicone fluid, a silicone resin, an alkaline formaldehyde sulfoxylate, aluminum or magnesium sulphate and cupric or other transitional metal sulphate for sufficient time to dehydrate the flower, said composition also containing a sufficient quantity of at least one compound in the group consisting of an alkaline phosphate, a lower carboxylic acid and phenol so as to ensure that the composition has a pH in the range 5-7. Following immersion the flower is dried and, if desired coated with a silicone resin.Type: GrantFiled: June 4, 1979Date of Patent: June 9, 1981Assignee: Queen's University at KingstonInventors: Cesar Romero-Sierra, John C. Webb
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Patent number: 4263176Abstract: Brighteners for detergents consisting of a mixture of 4,4'-bis-(2-morpholino-4-anilino-1,3,5-triazinylamino)-stilbene-2,2'-disul fonic acid-di-Na salt and from 5 to 50% by weight, calculated on said brightener, of another brightener of the formula ##STR1## in the above formula, M is an alkali metal cation, preferably sodium, X is a group of the formula --COR.sub.2 or --SO.sub.2 R.sub.3, R.sub.2 being C.sub.1 -C.sub.8 -alkyl and R.sub.3 being C.sub.1 -C.sub.5 -alkyl, C.sub.4 -C.sub.8 -cycloalkyl, phenyl or toluyl, Y is hydrogen or C.sub.1 -C.sub.5 -alkyl, A is C.sub.3 -C.sub.6 -alkylene, R.sub.1 is hydrogen, C.sub.1 -C.sub.5 -alkyl, C.sub.4 -C.sub.8 -cycloalkyl, or a group of the formula ##STR2## and Z is an anilino group, a chloroanilino group or a morpholino group. Said brightener mixtures are color-stable and do not show any green discoloration even after a prolonged storage in a moist atmosphere.Type: GrantFiled: November 16, 1979Date of Patent: April 21, 1981Assignee: Hoechst AktiengesellschaftInventors: Thomas Martini, Helmut Mengler, Gunter Rosch, Gunter Hohlfeld
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Patent number: 4263153Abstract: A dispersant or dispersant mixture that is useful in fuel and lubricant compositions, and that is characterized by its derivation from a long chain dicarboxylic acid material and an amino alcohol, is stabilized against oxidation by sulfurization by reaction with sulfur or with a sulfur compound selected from the group consisting of carbon disulfide, sulfides of phosphorus including P.sub.2 S.sub.5 and P.sub.4 S.sub.3, and phosphosulfurized olefins. More particularly, the dispersant so treated will usually comprise a mono or bis-oxazoline prepared by reaction of a hydrocarbyl-substituted C.sub.4 -C.sub.10 dicarboxylic acid or anhydride or ester thereof, having at least 50 carbon atoms in the hydrocarbyl group, with a 2,2-disubstituted 2-amino-1-alkanol that has from two to three hydroxy groups and that contains from 4 to 8 total carbon atoms.Type: GrantFiled: October 11, 1979Date of Patent: April 21, 1981Assignee: Exxon Research & Engineering Co.Inventors: Rosemary O'Halloran, Esther D. Winans
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Patent number: 4260501Abstract: Lubricant compositions containing oleaginous materials and, in an amount sufficient to impart oxidation stability and corrosion resistance thereto, an adduct of a benzotriazole compound and an alkyl vinyl ether or a vinyl ester of a carboxylic acid in combination with an alkyl dimercapto thiadiazole.Type: GrantFiled: May 11, 1979Date of Patent: April 7, 1981Assignee: Mobil Oil CorporationInventor: Joosup Shim
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Patent number: 4242224Abstract: Pink discoloration in amine antioxidant and antiozonant emulsions utilized in the latex industry at high pH has been prevented or retarded by the addition of stabilizers selected from dialkylhydroxylamines or mercaptans. These stabilizers are added at a ratio of from 0.1 to 5 parts by weight per 100 parts by weight of the age resister. In addition, a reversal of discoloration in a liquid amine antioxidant has been achieved by mixing the same type of stabilizer directly with the antioxidant.Type: GrantFiled: August 17, 1979Date of Patent: December 30, 1980Assignee: The Goodyear Tire & Rubber CompanyInventors: Paul R. Dean, II, Joseph A. Kuczkowski
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Patent number: 4239803Abstract: A composition for enhancing and maintaining mechanical properties such as tensile strength of an ethylene polymer on heating at elevated temperature comprises (A) an initiator of cross-linking having a half-life measured at 110.degree. C. of 0.1 to 50 hours and (B) an alkylthioalkylenecarboxylic acid ester of a polycarbocyclic polyhydric phenol.Type: GrantFiled: June 14, 1977Date of Patent: December 16, 1980Assignee: Argus Chemical CorporationInventors: Toshio Ohzeki, Mitsuo Akutsu, Yutaka Nakahara, Tohru Haruna, Motonobu Minagawa, Masahiro Nonoyama