Patents Assigned to Sherex Chemical Company, Inc.
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Patent number: 4724100Abstract: Esters are obtained from organic carboxylic acids and/or lower molecular weight esters thereof by a liquid phase reaction at temperatures of about 200.degree. C. to about 350.degree. C., pressures of about 50 psi to about 1800 psi, whereby water and/or alcohol by-product is removed during the reaction of the acid and/or lower molecular weight ester to the ester to thereby obtain the desired ester.Type: GrantFiled: March 26, 1986Date of Patent: February 9, 1988Assignee: Sherex Chemical Company, Inc.Inventors: Robert M. Gilbert, Owen Portwood, Gary W. Earl
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Patent number: 4683336Abstract: Amines are produced by reacting an aliphatic alcohol and/or an aliphatic aldehyde with an aminating agent in the presence of a catalyst containing copper carbonate and nickel carbonate and/or cobalt carbonate.Type: GrantFiled: December 13, 1985Date of Patent: July 28, 1987Assignee: Sherex Chemical Company Inc.Inventor: Clarence W. Blackhurst
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Patent number: 4678561Abstract: Disclosed is an improved process wherein coal particles are beneficiated by froth flotation under coal froth flotation conditions to separate the desired coal particles from remaining unwanted ash and like gangue material. The improvement of the present invention comprises conducting the froth flotation in the presence of an effective proportion of a hydrophobic, non-ionic promotor which is a C.sub.10 -C.sub.30 nitrile or polynitrile thereof.Type: GrantFiled: February 18, 1986Date of Patent: July 7, 1987Assignee: Sherex Chemical Company, Inc.Inventor: Robert O. Keys
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Patent number: 4678563Abstract: Disclosed is a process for the concentration of sulfide ore wherein an aqueous slurry of sulfide ore particles are subjected to sulfide ore froth flotation under sulfide ore froth flotation conditions. The improvement in process comprises using an effective amount of a frothing agent selected from the group consisting of:(a) the reaction product of a C.sub.5 -C.sub.10 diol and a C.sub.1 -C.sub.7 carboxylic acid;(b) the reaction product of a C.sub.5 -C.sub.10 diol and an acrylonitrile;(c) the reaction product of a C.sub.2 -C.sub.4 alkylene oxide and a C.sub.1 -C.sub.7 carboxylic acid;(d) the reaction group of a C.sub.2 -C.sub.4 alkylene oxide and a C.sub.5 -C.sub.10 diol;(e) the reaction product of a C.sub.2 -C.sub.4 alkylene oxide and an acrylonitrile; and(f) mixtures thereof,the resulting modified alcohol frothing agents have at least one hydroxyl group thereon. The modified alcohol frothing agents of the present invention provide improved flotation kinetics and selectivity in the sulfide ore float.Type: GrantFiled: May 7, 1985Date of Patent: July 7, 1987Assignee: Sherex Chemical Company, Inc.Inventor: Robert O. Keys
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Patent number: 4678562Abstract: Disclosed is an improved process wherein coal particles are beneficiated by froth flotation under coal froth flotation conditions to separate the desired coal particles from remaining unwanted ash and like gangue material. The improvement of the present invention comprises conducting the froth flotation in the presence of an effective proportion of a hydrophobic, non-ionc promoter which is a C.sub.12 -C.sub.30 fatty alcohol or its C.sub.3 or higher alkoxylated derivative.Type: GrantFiled: February 18, 1986Date of Patent: July 7, 1987Assignee: Sherex Chemical Company, Inc.Inventor: Robert O. Keys
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Patent number: 4622168Abstract: Disclosed is a method for improving the storage stability of a blend of an amine and an imidazolinium compound. Such method comprises adding an effective amount of a bisulfite agent to said blend. The stabilized blend is especially stable at elevated temperatures of storage.Type: GrantFiled: April 19, 1985Date of Patent: November 11, 1986Assignee: Sherex Chemical Company, Inc.Inventor: David E. Whittlinger
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Patent number: 4606818Abstract: Disclosed is an improved froth flotation process wherein solid coal particles are selectively separated under coal froth flotation conditions as a froth phase from remaining solid feed particles as an aqueous phase in the presence of a coal particle collector (e.g. a fuel oil), optionally a promoter, and an alcohol frother. The improvement in the present invention is characterized by the alcohol frother comprising the reaction product of a C.sub.4 -C.sub.10 diol and a compound selected from the group consisting of an alkylene oxide and an acrylonitrile. The resulting frothing agent has at least one hydroxyl group and provides greater coal recovery than use of the diol as the frothing agent.Type: GrantFiled: January 25, 1985Date of Patent: August 19, 1986Assignee: Sherex Chemical Company, Inc.Inventor: Robert O. Keys
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Patent number: 4589980Abstract: Disclosed is an improved process wherein coal particles are beneficiated by froth flotation under coal froth flotation conditions to separate the desired coal particles from remaining unwanted ash and like gangue material. The improvement of the present invention comprises conducting the froth flotation in the presence of an effective proportion of a promoter which is at least C.sub.10 aliphatic carboxylic acid or an aliphatic ester thereof which is devoid of nitrogen atoms; the hydroxylated, oxidized, or alkoxylated derivative of said acid or ester promoters; and mixtures thereof.Type: GrantFiled: March 1, 1984Date of Patent: May 20, 1986Assignee: Sherex Chemical Company, Inc.Inventor: Robert O. Keys
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Patent number: 4569947Abstract: Disclosed is an improved method for controlling mosquitos wherein a body of water containing immature forms of mosquitos has its surface coated with a thin film of a control agent which is a non-ionic, organic material with a density less than that of water. The improvement in such method comprises coating the surface with an approximately monomolecular film of a .beta.-branched alcohol of the following structure: ##STR1## where R.sub.1 and R.sub.2 is C.sub.9 -C.sub.28 ; andR.sub.1 and R.sub.2 is at least C.sub.3, orR.sub.2 is CH.sub.3 and R.sub.1 has at least two branch sites.Type: GrantFiled: November 13, 1984Date of Patent: February 11, 1986Assignee: Sherex Chemical Company, Inc.Inventors: James R. Stockton, Richard C. Dodwell
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Patent number: 4504652Abstract: Disclosed is a method for reducing the odor and/or improving the performance of polyester plasticizers of the type made from a dibasic acid, a polyol, and a chain terminator wherein a molar excess of alcohol ingredients is used. Such improved polyester plasticizer is made by subjecting the polyester plasticizer to a second stage reaction with a treating agent reactive with hydroxyl groups to reduce the hydroxyl value to no more than about 4. Preferably, the low acid number of the initial polyester plasticizer is maintained. The treating agent can be monofunctional or poly-functional, though preferably a difunctional isocyanate is used. Conventional thermoplastic substrates, typified by polyvinyl chloride, can be plasticized with the novel polyester plasticizers of the present invention.Type: GrantFiled: April 25, 1984Date of Patent: March 12, 1985Assignee: Sherex Chemical Company, Inc.Inventors: Charles R. Widder, Don S. Wozniak
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Patent number: 4504385Abstract: Disclosed is an improved process wherein coal particles are beneficiated by froth flotation under coal froth flotation conditions to separate the desired coal particles from remaining unwanted ash and like gangue material. The improvement of the present invention comprises conducting the froth flotation in the presence of an ester-alcohol frothing agent. The preferred ester-alcohol frothing agents are reaction products of C.sub.1 -C.sub.10 mono-basic carboxylic acids and diols wherein the total number of carbon atoms range from about 6-19 and monocarboxylic acid esters of polyoxyalkylene glycols which can contain up to 25-30 carbon atoms.Type: GrantFiled: December 30, 1982Date of Patent: March 12, 1985Assignee: Sherex Chemical Company, Inc.Inventor: Robert O. Keys
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Patent number: 4504666Abstract: Disclosed is an improvement in process for oxidizing an aromatic amine to form an aromatic amine oxide wherein a reaction mixture of the aromatic amine and a peracid is formed and maintained under non-aqueous conditions at a temperature and for a time adequate until substantially all of the aromatic amine is formed into said aromatic amine oxide. The provision for eliminating water from the reaction mixture leads to near quantitative yields of aromatic amine oxide.Type: GrantFiled: June 4, 1982Date of Patent: March 12, 1985Assignee: Sherex Chemical Company, Inc.Inventors: Gary W. Earl, Howard M. Hickman
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Patent number: 4343726Abstract: A detergent composition having low eye and skin irritation properties and capable of forming a high viscosity composition in water which includes an adduct of ethylene oxide or mixtures of ethylene oxide and propylene oxide and a glycerol ester of certain carboxylic acids; and an anionic surface active agent.Type: GrantFiled: February 7, 1980Date of Patent: August 10, 1982Assignee: Sherex Chemical Company, Inc.Inventors: Richard R. Egan, Phillip L. Cotrell
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Patent number: 4338216Abstract: Disclosed is a method for stabilizing an aqueous tertiary di-(.beta.-hydroxy organo) amine oxide which comprises incorporating therein a stabilizing proportion of an amine oxide salt which is the reaction product of a tertiary amine oxide and a protic acid.Type: GrantFiled: December 26, 1979Date of Patent: July 6, 1982Assignee: Sherex Chemical Company, Inc.Inventors: Gary W. Earl, Howard M. Hickman
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Patent number: 4337149Abstract: An improved froth flotation process wherein preselected particles are selectively separated under froth flotation conditions as a froth phase from remaining feed particles as an aqueous phase in the presence of an anionic collector. Such improvement is characterized by the addition of an effective proportion of a promoter. The promoter is characterized as an amine oxide promoter. Preferred feed particles are phosphate ore particles.Type: GrantFiled: May 11, 1981Date of Patent: June 29, 1982Assignee: Sherex Chemical Company, Inc.Inventor: Saul J. Escalera
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Patent number: 4325821Abstract: Disclosed is an improved froth flotation process wherein preselected solid particles are selectively separated under froth flotation conditions as a froth phase from remaining solid feed particles as an aqueous phase in the presence of a collector amine. Such improvement comprises conducting said froth flotation in the presence of an effective proportion of an amine oxide promoter. The preferred feed particles comprise sylvinite ore.Type: GrantFiled: February 4, 1981Date of Patent: April 20, 1982Assignee: Sherex Chemical Company, Inc.Inventor: Saul J. Escalera
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Patent number: 4304682Abstract: A polyol composition consisting essentially of a homogenous liquid admixture of propylene glycol and a diol obtained by alkoxylating a propylene glycol dispersion of 3,3',5,5'-tetrabromobisphenol A with ethylene oxide, propylene oxide or mixtures thereof. These polyol compositions are useful in preparing fire and chemical resistant thermosetting resinous compositions.Type: GrantFiled: February 7, 1979Date of Patent: December 8, 1981Assignee: Sherex Chemical Company, Inc.Inventors: Howard M. Hickman, Gary W. Earl
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Patent number: 4275236Abstract: Disclosed are tertiary amine oxides which comprise an amine oxide nucleus substituted with an organic group and with two hydroxy groups which have carbon atoms in at least the .alpha., .beta. and .gamma. positions, a hydroxyl group on the .beta.-carbon atom, and have an effective chain length of at least 4 carbon atoms, said amine oxide being capable of being provided in ostensibly anhydrous form and being capable of being made at a concentration by weight of at least about 80% by oxidizing the corresponding tertiary amine with an oxidizing agent without solvent and without gelling during said oxidation.Type: GrantFiled: December 26, 1979Date of Patent: June 23, 1981Assignee: Sherex Chemical Company, Inc.Inventors: Gary W. Earl, Howard M. Hickman
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Patent number: 4263177Abstract: Disclosed is an amine oxide foam stabilizer for stabilizing a foam of an alkyl benzene sulfonate foaming agent, wherein said amine oxide foam stabilizer is represented by the following general structure: ##STR1## where, R.sub.1 is a C.sub.4 -C.sub.11 alkyl groupR.sub.2 is a C.sub.2 -C.sub.4 alkylene groupR.sub.3, R.sub.4 each, independently, is a C.sub.1 -C.sub.4 hydroxyalkyl group.Type: GrantFiled: June 27, 1979Date of Patent: April 21, 1981Assignee: Sherex Chemical Company, Inc.Inventors: Richard R. Egan, Michelle M. Watts
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Patent number: 4256611Abstract: A liquid detergent system wherein the active content is a combination of an anionic surfactant and a nonionic surfactant in the form of ethoxylated partial glycerol esters of a higher, detergent grade fatty acid and optionally containing a foam stabilizing agent. These systems are particularly useful for formulating shampoos and light duty liquid household cleaning compositions having low eye and skin irritation properties.Type: GrantFiled: June 18, 1979Date of Patent: March 17, 1981Assignee: Sherex Chemical Company, Inc.Inventors: Richard R. Egan, Phillip L. Cotrell