Patents Assigned to Sherex Chemical Company, Inc.
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Patent number: 5256187Abstract: The present invention relates to the extraction and separation of low concentrations of precious group metals from acid chloride solutions, which are obtained by leaching catalytic converters, by utilizing a 8-hydroxyquinoline containing resin and a thiourea stripping process. The said process eliminates the phase separation problems and reagent losses which are normally associated with prior art methods. In addition to being used as a catalytic converter recycler, the present invention can be also employed by waste water treatment plants.Type: GrantFiled: November 12, 1992Date of Patent: October 26, 1993Assignee: Sherex Chemical Company, Inc.Inventor: David L. Gefvert
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Patent number: 5223628Abstract: A process is disclosed for making substantially solvent free quaternary ammonium compounds using fatty acids, amines and quaternizing agents without side reactions that would produce esters of fatty acids. A relatively small amount of a water-alcohol solvent is used in the quaternizing reaction after which a fatty acid is added and the solvent removed by sparging and/or vacuum.Type: GrantFiled: November 7, 1991Date of Patent: June 29, 1993Assignee: Sherex Chemical Company, Inc.Inventor: David E. Whittlinger
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Patent number: 5221794Abstract: The invention relates to a method of producing a mixture of a quaternary ammonium compound, fatty acid, fatty acid ester and tertiary amine salt in situ which is a highly functional mixture that is manufactured in a single step reaction whereby quaternization is completed without the aid of solvents, especially flammable solvents. The single step reaction process eliminates separate blending of individual components. The compositions obtained can be used as fabric softeners, in modified clays, as hair treating compounds and as disinfectants.Type: GrantFiled: November 7, 1991Date of Patent: June 22, 1993Assignee: Sherex Chemical Company, Inc.Inventors: Jeannene A. Ackerman, Michael Miller, David E. Whittlinger
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Patent number: 5200097Abstract: The addition of up to 15 percent by weight of a polyoxyalkylene derivative to a fatty acid derived bis(alkylamidoalkyl)amine derived quaternary salt permits the atomization of the latter in conventional equipment. The resulting fabric softening product is in the desirable form of a free flowing solid, water dispersible powder.Type: GrantFiled: April 23, 1990Date of Patent: April 6, 1993Assignee: Sherex Chemical Company, Inc.Inventors: Leonard Hughes, James G. Fuller, William J. Zeman
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Patent number: 5182033Abstract: Disclosed are compounds useful as biodegradable fabric softeners, of the general formula: ##STR1## wherein R is alkyl containing up to 22 carbon atoms, alkyl containing up to 22 carbon atoms and one or more ethylenic bonds, acyl containing 2 to 22 carbon atoms, or H;R.sub.1 is ##STR2## Z.sub.1, Z.sub.2, and Z.sub.3 are each alkylene containing 2-8 carbon atoms in the principal chain and a total of up to 15 carbon atoms;Y is an integer from 1-3;R.sub.3 is methyl, ethyl or H;R.sub.4 and R.sub.5 are each alkyl containing up to 22 carbon atoms, alkyl containing up to 22 carbon atoms and one or more ethylenic bond, or --Z.sub.2 --OR;R.sub.5 is methyl, ethyl, hydroxymethyl, hydroxyethyl, or H;R.sub.6 is methyl, ethyl, hydroxymethyl, hydroxyethyl, or benzyl;R.sub.7 is ##STR3## X--is a salt forming anion.Type: GrantFiled: June 14, 1991Date of Patent: January 26, 1993Assignee: Sherex Chemical Company, Inc.Inventor: Robert K. Lagerman
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Patent number: 5128053Abstract: This invention relates to compositions for use in automatic laundry dryers comprising at least one piperazine compound of the formula: ##STR1## wherein A is ##STR2## or ##STR3## Y is --O-- or --NR.sub.4 --; Z is alkylene containing 2 to 6 carbon atoms in the principal chain and a total of up to 8 carbon atoms;R is alkyl containing from about 8 to about 30 carbon atoms and may contain at least one of --S--, --O--, ##STR4## CONR.sub.4, epoxy and double bond in the chain; R.sub.2 is alkyl containing up to about 30 carbon atoms and may contain at least one of --S--, --O--, ##STR5## --CONR.sub.4 --, epoxy and double bond in the chain; and R.sub.3 and R.sub.4 are each H or lower alkyl;with the proviso that the total number of carbon atoms in the acyl R and R.sub.2 groups is at least 18;X is a salt-forming anion; R.sub.1 is H, lower alkyl, hydroxylower- alkyl or benzyl; and n is an integer from 1 to 4.Type: GrantFiled: February 6, 1991Date of Patent: July 7, 1992Assignee: Sherex Chemical Company, Inc.Inventors: Gene A. Gummo, Gary W. Earl, Nancy Johnston
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Patent number: 5128473Abstract: New piperazine compounds of the formula ##STR1## wherein A is ##STR2## Y is --O-- or --NR.sub.4 --; Z is alkylene containing 2 to 6 carbon atoms in the principal chain and a total of up to 8 carbon atoms;R is alkyl containing from about 8 to about 30 carbon atoms and may contain at least one of --S--, --O--, ##STR3## CONR.sub.4, epoxy and double bond in the chain; R.sub.2 is alkyl containing up to about 30 carbon atoms and may contain at least one of --S--, --O--, ##STR4## --CONR.sub.4 --, epoxy and double bond in the chain; and R.sup.3 and R.sup.4 are each H or lower alkyl;with the proviso that the total number of carbon atoms in the acyl R and R.sub.2 groups is at least 18;X is a salt-forming anion; R.sub.1 is H, lower alkyl, hydroxylower- alkyl or benzyl; and n is an integer from 1 to 4 are especially effective as fabric softeners with antistatic properties and in hair conditioner compositions.Type: GrantFiled: February 1, 1991Date of Patent: July 7, 1992Assignee: Sherex Chemical Company, Inc.Inventors: Floyd Friedli, Michelle Watts
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Patent number: 5071899Abstract: Disclosed is an anti-stat which is effective in polyvinyl chloride polymeric parts to dissipate charge phenomena occurring at a surface thereof. The anti-stat comprises an ethoxylated fat-forming alcohol and a dibasic acid-capped fat-forming alcohol which is incorporated in an effective amount in the polyvinyl chloride polymeric material.Type: GrantFiled: February 2, 1990Date of Patent: December 10, 1991Assignee: Sherex Chemical Company, Inc.Inventor: Don S. Wozniak
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Patent number: 5019610Abstract: Disclosed is a polymer-modified asphalt composition which comprises a mixture of (a) a blend of from about 10 to 75 weight-percent of one or more of a thermoplastic rubber polymer and from about 90 to 25 weight-percent of one or more of a fatty dialkyl amide, and (b) an asphalt cement. Also disclosed is a method of preparing such compositions, which requires gentle stirring only.Type: GrantFiled: October 18, 1990Date of Patent: May 28, 1991Assignee: Sherex Chemical Company, Inc.Inventors: Gary E. Sitz, Roger K. Chatterjee
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Patent number: 5015412Abstract: Disclosed is an aqueous basic solution having a calculated pH of 13 or greater of a sulfobetaine which is soluble and stable for extended periods of storage. The sulfobetaine also is soluble and stable in aqueous basic solutions of high concentration, e.g. up to 30%-50% by weight sodium hydroxide or potassium hydroxide.Type: GrantFiled: December 18, 1989Date of Patent: May 14, 1991Assignee: Sherex Chemical Company, Inc.Inventor: William J. Zeman
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Patent number: 4990264Abstract: The present invention is directed to a dewatering aid which functions unexpectedly efficiently in the dewatering of a particulate solids slurry, e.g. mineral ore concentrate or slurry, wherein a dewatering aid is added thereto followed by filtration of the slurry. Such improved dewatering results are achieved by adding to the mineral ore slurry, an effective amount of a dewatering aid comprising an alkoxylated C.sub.6 -C.sub.11 alkanol or alkanoic acid wherein alkoxylation is conducted with propylene oxide or butylene oxide.Type: GrantFiled: October 13, 1989Date of Patent: February 5, 1991Assignee: Sherex Chemical Company, Inc.Inventors: James G. Fuller, Owen Portwood, Joe W. Cotton
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Patent number: 4967008Abstract: The present invention is directed to polyamines represented by the following general structure: ##STR1## where R is an organic group, R' is H or CH.sub.3, andx=0-3Tri, tetra, penta, and hexa amines, accordingly, are disclosed.The method for making the novel polyamines comprises a multi-step reaction that commences in step (a) with the cyanoethylation of a primary amine, R--NH.sub.2, with acrylonitrile under cyanoethylation conditions to form an aminonitrile of the structure R--NH--CH.sub.2 --CH.sub.2 --CN. The aminonitrile in step (b) is methylated by reaction with formic acid and formaldehyde under Leuckart reaction conditions to form a monomethyl aminonitrile of the structure R--N(CH.sub.3)--CH.sub.2 --CH.sub.2 --CN. The monomethyl aminonitrile then in step (c) is reduced, preferably by hydrogenation under hydrogenation conditions, to form a monomethyl diamine of the structure R--N(CH.sub.3)--CH.sub.2 --CH.sub.2 --CH.sub.2 --NH.sub.2.Type: GrantFiled: January 12, 1990Date of Patent: October 30, 1990Assignee: Sherex Chemical Company, Inc.Inventors: Floyd E. Friedli, Robert M. Gilbert
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Patent number: 4913841Abstract: Disclosed is an aqueous basic solution having a calculated pH of 13 or greater of a sulfobetaine which is soluble and stable for extended periods of storage. The sulfobetaine also is soluble and stable in aqueous basic solutions of high concentration, e.g. up to 50% by weight sodium hydroxide.Type: GrantFiled: January 5, 1988Date of Patent: April 3, 1990Assignee: Sherex Chemical Company, Inc.Inventor: William J. Zeman
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Patent number: 4906681Abstract: Disclosed is an anti-stat which is effective in polyvinyl chloride polymeric parts to dissipate charge phenomena occurring at a surface thereof. The anti-stat comprises an ethoxylated fat-forming alcohol and a dibasic acid-capped fat-forming alcohol which is incorporated in an effective amount in the polyvinyl chloride polymeric material.Type: GrantFiled: June 29, 1989Date of Patent: March 6, 1990Assignee: Sherex Chemical Company, Inc.Inventor: Don S. Wozniak
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Patent number: 4892663Abstract: Disclosed is a method for dewatering an aqueous slurry of solid coal particulates wherein a dewatering aid is added to the slurry followed by filtration thereof, preferably with vacuum augmentation. Selected quaternary ammonium dewatering aids of specific structure are disclosed.Type: GrantFiled: December 2, 1988Date of Patent: January 9, 1990Assignee: Sherex Chemical Company, Inc.Inventor: Robert O. Keys
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Patent number: 4891214Abstract: The addition of up to 80 percent by weight of a fatty alcohol, and up to 10 percent by weight of a fatty alkylamido alkyldialkylamine to a quaternary ammonium compound, results in a particulate composition which, when stirred into warmed, slightly acidified water, almost immediately forms an emulsion. The emulsion thus produced overcomes many problems usually associated with the formulation of emulsions, and is suitable for use as a hair conditioner.Type: GrantFiled: August 22, 1988Date of Patent: January 2, 1990Assignee: Sherex Chemical Company, Inc.Inventors: Frank H. Stevens, Sheila E. Vetter
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Patent number: 4876355Abstract: Disclosed is a stable, free-flowing particulate imidazoline product of the structure: ##STR1## where R.sub.1 and R.sub.2 independently are a saturated C.sub.12 -C.sub.22 alkyl group. The product is made by condensing and cyclyzing a fatty acid or ester and a polyamine wherein the molten, cyclyzed, solvent-free product is rapidly cooled to a particulate form.Type: GrantFiled: October 21, 1988Date of Patent: October 24, 1989Assignee: Sherex Chemical Company, Inc.Inventors: Leonard Hughes, James G. Fuller, Gary W. Earl
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Patent number: 4855114Abstract: Disclosed is a process for recovering gallium values contained in a basic aqueous solution by liquid/liquid extraction thereof. The liquid/liquid extraction process comprises contacting the basic aqueous solution with a water-immiscible, organic phase comprising a substituted hydroxyquinoline dissolved in an organic solvent therefor whereby gallium is extracted into the organic phase. Thereafter, the organic phase is separated from the basic aqueous phase and the gallium recovered from the separated organic phase. The improvement in process of the present invention comprises the organic phase further comprising dissolved therein an organic dioxime compound.Type: GrantFiled: September 30, 1988Date of Patent: August 8, 1989Assignee: Sherex Chemical Company, Inc.Inventor: David L. Gefvert
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Patent number: 4855440Abstract: Disclosed is a method for stabilizing the color of liquid imidazolines which comprises pre-treating a polyamine with an effective amount of a hydride, preferably a borohydride, followed by its reaction with a fatty acid or ester thereof under amide-forming reaction conditions to make an amide intermediate, followed by subjecting said amide intermediate to imidazoline-forming reaction conditions to make said color-stablized imidazoline product.Type: GrantFiled: February 16, 1988Date of Patent: August 8, 1989Assignee: Sherex Chemical Company, Inc.Inventors: Dale F. Shumway, Harry C. Robbins
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Patent number: 4824700Abstract: Disclosed is an improved plastisol composition comprising a finely-divided vinyl chloride polymer, filler, a primary plasticizer, and a polyaminoamide-polyimidazoline adhesion promoter. The improvement for overcoating said plastisol with an acid catalyzed topcoat comprises a plasticizer/promoter phase which comprises said primary plasticizer, said adhesion promoter, and an effective amount of a secondary plasticizer non-ionic solvent effective in solvating the adhesion promoter in the plasticizer/promoter phase. The plasticizer/promoter phase is pre-formed for addition with the remaining ingredient for the plastisol composition.Type: GrantFiled: February 22, 1988Date of Patent: April 25, 1989Assignee: Sherex Chemical Company, Inc.Inventor: Don S. Wozniak