Patents Assigned to Reichhold Chemicals
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Patent number: 4294996Abstract: The invention covers the use of novel co-catalysts as inhibitors that reduce the formation of undesirable chlorinated dioxins during the preparation of pentachlorophenol and tetrachlorophenol from phenol or lower chlorinated phenols.Type: GrantFiled: June 9, 1980Date of Patent: October 13, 1981Assignee: Reichhold Chemicals, IncorporatedInventors: William H. Wetzel, Hsi-Lung Pan, Robert J. Goodwin, John E. Wilkinson
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Patent number: 4288249Abstract: This invention relates generally to water soluble wood treating compositions and methods for preservation of wood or products made from wood. In the general practice of this invention, wooden objects are treated with water soluble wood treating and preserving solutions consisting of blends of (A) from 0.1% to about 50% by weight of a chlorophenol selected from a group consisting of pentachlorophenol and tetrachlorophenol and mixtures thereof (B) from about 2% to about 98% by weight aliphatic alcohols selected from the group consisting of n-butyl alcohol, secondary butyl alcohol, isobutyl alcohol, tertiary butyl alcohol and isopropyl alcohol and mixtures thereof (C) from about 0.56% to about 45% of an amine selected from the group consisting of ammonium hydroxide, triethyl amine, trimethyl amine, methyl amine and methyldiethanolamine and mixtures thereof and (D) from about 1% to about 97% by weight water.Type: GrantFiled: August 11, 1980Date of Patent: September 8, 1981Assignee: Reichhold Chemicals, Inc.Inventors: Joseph Amundsen, Robert J. Goodwin, William H. Wetzel
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Patent number: 4279964Abstract: A froth coated paper substrate in which the froth coating may be densified by compression when applied as a frothed resinous emulsion to improve opacity and ink-holdout of the substrate, or applied as a frothed surface size when the coating is a frothed admixture of a resin emulsion and a starch solution, or a frothed starch solution.Type: GrantFiled: November 26, 1979Date of Patent: July 21, 1981Assignee: Reichhold Chemicals, IncorporatedInventor: David S. Heller
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Patent number: 4273700Abstract: A new and improved foundry aggregate binder system and composition is comprised of a mixture of polyols.Type: GrantFiled: October 17, 1979Date of Patent: June 16, 1981Assignee: Reichhold Chemicals, IncorporatedInventor: Khe-Bing J. Kho
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Patent number: 4205112Abstract: A process for forming a high viscosity coating composition from low viscosity polymeric colloidal dispersion by substantially effecting the thickening of the colloidal dispersion in a mixing head, and for producing from the mixing head a range of high viscosity coatings using the same low viscosity polymeric colloidal dispersion.Type: GrantFiled: December 14, 1978Date of Patent: May 27, 1980Assignee: Reichhold Chemicals, IncorporatedInventor: Gaillard A. Mervin
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Patent number: 4166893Abstract: Process for the production of monomeric monohydroxy unsaturated diesters of formula Ir.sub.1 --co.sub.2 --ch.dbd.ch--co.sub.2 --r.sub.2wherein: R.sub.1 represents an alkyl group of two to six carbon atoms containing a free hydroxyl group, or 2,3-dihydroxy-propyl group, or a group of formula --(CH.sub.2).sub.n O].sub.m [(CH.sub.2).sub.x --OH wherein n is 2 or 3, x is 2 or 3, and m is 1 to 800; R.sub.2 represents an alkyl group of linear or branched configuration containing 4 to 12 carbon atoms. These compounds may be copolymerized in solution or suspension by free radical processes with an alkylacrylate and a third olefinically unsaturated monomer. These copolymers can be crosslinked with amino resins to provide thermosetting film-forming compositions.Type: GrantFiled: October 3, 1977Date of Patent: September 4, 1979Assignee: Reichhold Chemicals LimitedInventors: Stamatis M. Kambanis, Alan D. Roberts, Walter Schank
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Patent number: 4166054Abstract: An air curable resin solution useful for surface coating and impregnation comprising (I) the reaction product of (A) from about 50% to about 65% by weight based upon the total weight of (A) and (B) of an epoxy resin ester of a partially conjugated unsaturated fatty acid and (B) from about 50% to about 35% by weight based upon the total weight of (A) and (B) of a blend of reactive monomer possessing reactive double bonds, at least one of which must be an unsaturated mono-basic acid in the presence of (II) an alcohol ether of a glycol and subsequently reacted with (III) an amine and then (IV) dispersed in water, wherein component (A) is the reaction product of 2,2,bis(4 hydroxy phenyl) dimethyl methane and epichlorohydrin, and has a melting point from about 130.degree. F. to about 230.degree. F.Type: GrantFiled: February 6, 1978Date of Patent: August 28, 1979Assignee: Reichhold Chemicals, Inc.Inventors: Charles J. Meeske, Enrique H. Van der Tuin, Michael J. Racey
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Patent number: 4160114Abstract: In a process for producing relatively pure commercially acceptable pentachlorophenol, comprising reacting, at a temperature ranging from about 10.degree. to about 190.degree. C., (A) a phenol consisting essentially of raw or commercial phenol which may contain, as impurities from other processes, some lower chlorophenols such as mono and dichlorophenols and mixtures thereof, and (B) chlorine, in the presence of (C) an acid catalyst from about 0.005 moles to about 0.Type: GrantFiled: July 20, 1977Date of Patent: July 3, 1979Assignee: Reichhold Chemicals, Inc.Inventors: Frederic J. Shelton, William H. Wetzel, John E. Wilkinson, Robert J. Goodwin
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Patent number: 4159389Abstract: This invention relates to an improved method for the production of high purity dicumyl peroxide. As produced, dicumyl peroxide contains many impurities which must be removed. Generally, our invention comprises flash distilling crude dicumyl peroxide, separating and discarding the distillate and allowing the residual product to crystallize. The supernatant liquid from the crystallized dicumyl peroxide is then fed into the next batch of crude dicumyl peroxide to be distilled. In this manner high yields are obtained along with a very rapid distillation time. Because the supernatant liquid from each crystallization is fed back into the process, the dicumyl peroxide normally left in the supernatant is recovered in the subsequent steps.Type: GrantFiled: May 16, 1978Date of Patent: June 26, 1979Assignee: Reichhold Chemicals, Inc.Inventors: John D. Malkemus, Yun G. Chang
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Patent number: 4146375Abstract: Method and apparatus for forming glass fiber strand directly and continuously from raw batch glass-forming material, which includes means for continuously electrically melting raw batch, glass-forming materials, forehearth and fiber forming means for continuously receiving said melted glass, means for continuously attenuating said glass from said fiber forming means in the form of a multiplicity of fiberglass filaments, and means for converging and winding said filaments in the form of a fiberglass strand.Type: GrantFiled: April 27, 1978Date of Patent: March 27, 1979Assignee: Reichhold Chemicals, Inc.Inventors: Charles R. MacPherson, Robert E. Boyce, Aaron G. Smith
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Patent number: 4138518Abstract: A textile composite is formed utilizing a latex composition formulated with granular starch dispersed uniformly throughout. The composite is subjected to suitable heating or drying conditions to gelatinize substantially all the starch particles thereby imparting to the composite improved cohesiveness.Type: GrantFiled: December 6, 1977Date of Patent: February 6, 1979Assignee: Reichhold Chemicals, Inc.Inventors: Emil G. Sammak, Douglas J. Ladish, John J. Martin, Claire D. LeClaire
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Patent number: 4137138Abstract: Novel radiation curable compositions incorporating a mixture of: 1. Unsaturated polyester prepared from polyhydric alcohol, unsaturated dicarboxylic acid and with or without saturated dicarboxylic acid, or unsaturated ether type polyester prepared for polyglycidyl ether and unsaturated monocarboxylic acid with 2. Saturated monomer of lactone or lactam type. The above compositions are cured with or without radiation sensitive additive and are useful in coating or printing ink applications.Type: GrantFiled: November 4, 1975Date of Patent: January 30, 1979Assignee: Reichhold Chemicals LimitedInventors: Colin B. Batt, Helena Z. Kucharska, Arie Jansen
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Patent number: 4131114Abstract: Spool of tape and all necessary resin-forming reactant liquids are packaged in a "one-shot", disposable container for delivery to a physician who mounts the unopened package on an activator machine which spins it in successive operational stages to first activate the reactant liquids by mixing in a mixing region of the package and then wet the tape with the activated liquid by centrifuge, subsequent centrifuging removing excess liquid, whereupon the package is opened and the spool of tape, now damp with the curing resin thereon, is removed for winding on the patient's body to form a polyurethane resin orthopedic cast which hardens within minutes in air and without additional curing procedures. Preferred reactant liquids, plasticizers, and catalysts are disclosed, which have long shelf-life within the package.Type: GrantFiled: January 31, 1977Date of Patent: December 26, 1978Assignee: Reichhold Chemicals, Inc.Inventors: Harold B. Kirkpatrick, Edward C. Distler, Marvin Menzin
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Patent number: 4101293Abstract: This invention relates to the preparation and use of a novel emulsifier for use in formulating storage stable coal and oil fuel mixtures. The stabilizer is prepared by reacting blends of unsaturated aliphatic and cycloaliphatic carboxylic acids with alkali metal hydroxides or amines. This stabilizing emulsifier allows for the preparation of coal and oil fuel mixtures containing up to 50 parts by weight of coal which possess superior storage stability over wide temperature ranges without the coal settling out, which undergo clean combustion thus reducing the increased air pollution normally associated with the combustion of coal or coal containing fuels and which may be used in conventional oil burning furnaces with a minimum of modification.Type: GrantFiled: March 30, 1977Date of Patent: July 18, 1978Assignee: Reichhold Chemicals, Inc.Inventors: Arthur Waldemar Krause, John Korose
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Patent number: 4101709Abstract: Improved, low modulus glass fibers for the production of glass fiber reinforced, high energy absorption resin laminates, said glass having a modulus of elasticity of from about 5.0 to about 6.5 .times. 10.sup.6 psi, the composition of said fibers being generally of the alkali borosilicate type, the major portion thereof comprising from about 40-65 weight percent SiO.sub.2, 24-38 weight percent B.sub.2 O.sub.3, and 5-20 weight percent alkali.A high energy absorption resin laminate comprising the combination of a plastic resin composition reinforced with said fibers.Type: GrantFiled: April 25, 1973Date of Patent: July 18, 1978Assignee: Reichhold Chemicals, Inc.Inventors: Tack J. Whang, Robert W. Pelz
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Patent number: 4098770Abstract: A method of preparing a modified phenol-formaldehyde resin in solid particulate form comprising reacting together, in an aqueous medium, phenol and formaldehyde, in a ratio of 1.0 mole phenol to between 1.8 and 3.5 moles of formaldehyde, in the presence of between 0.1 and 1.0 moles of a basic catalyst; continuing this reaction until a desired viscosity is reached; modifying the reaction system by adding thereto between 0 and 30%, based on the weight of phenol originally taken of a non-phenolic polyhydroxy compound; spray drying the thus modified liquid resin in a pressure nozzle drier, and chilling the spray dried particulate solid. These solid resins are redispersible in water and stable on storage, compared to the known aqueous, equivalent, systems.Type: GrantFiled: September 15, 1976Date of Patent: July 4, 1978Assignee: Reichhold Chemicals LimitedInventors: Antoine Berchem, Krishan Kumar Sudan, Edward Michael Gres
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Patent number: 4065421Abstract: This invention relates to a process for the continuous production of aqueous urea-formaldehyde solutions having a mol ratio of formaldehyde to urea ranging from about 4.0 to about 6.0 and having a total solids content ranging from about 60% to about 85% by weight. This process utilizes a single multiple tray absorption column through which is passed the gaseous product from a formaldehyde converter counter current to a flow of aqueous urea solution. The column is maintained at a temperature ranging from about 40.degree. C to about 80.degree. C and dilute aqueous base is added at several points along the tower. Formaldehyde combines with the urea in the solution during their respective passages through the column to form the final product. A portion of the final product is circulated through the lower portion of the column.Type: GrantFiled: March 17, 1976Date of Patent: December 27, 1977Assignee: Reichhold Chemicals, Inc.Inventors: Charles L. Allyn, James C. Manlove, Gerald M. Chang, Robert C. Burmark
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Patent number: 4055694Abstract: A latex composition is provided comprising a polymeric latex and an extender consisting essentially of a mixture of granular starch and borax. This extender can be used at relatively high levels in the polymeric latex without substantially deleteriously affecting the properties of the latex when used for coating textiles.Type: GrantFiled: April 5, 1976Date of Patent: October 25, 1977Assignee: Reichhold Chemicals, Inc.Inventors: Robert B. Hadgraft, John J. Martin
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Patent number: 4020832Abstract: Spool of tape and all necessary resin-forming reactant liquids are packaged in a "one-shot", disposable container for delivery to a physician who mounts the unopened package on an activator machine which spins it in successive operational stages to first activate the reactant liquids by mixing in a mixing region of the package and then wet the tape with the activated liquid by centrifuge, subsequent centrifuging removing excess liquid, whereupon the package is opened and the spool of tape, now damp with the curing resin thereon, is removed for winding on the patient's body to form a polyurethane resin orthopedic cast which hardens within minutes in air and without additional curing procedures. Preferred reactant liquids, plasticizers, and catalysts are disclosed, which have long shelf-life within the package.Type: GrantFiled: December 24, 1974Date of Patent: May 3, 1977Assignee: Reichhold Chemicals, Inc.Inventors: Harold B. Kirkpatrick, Edward C. Distler, Marvin Menzin
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Patent number: 4004784Abstract: Machine for sequentially rotating and tilting a container having materials therein for wetting or impregnating a tape to be used for forming an orthopedic cast, the machine having a turntable rotatable about a horizontal axis, a platform on the turntable for receiving the container base and rotatable about an axis transverse to the turntable axis and a clamp on the turntable for clamping the container on the platform. The turntable is rotatable by a first motor and the platform is rotatable by a second motor mounted on the turntable. The first and second motors are sequentially energized by a motor driven timing means to (a) tilt the container from its upright position to a position 45.degree. from the vertical, (b) intermittently spin the container, (c) invert the container, (d) spin the container, (e) return the container to its upright position and (f) spin the container.Type: GrantFiled: August 14, 1975Date of Patent: January 25, 1977Assignee: Reichhold Chemicals, Inc.Inventor: Edward C. Distler