Patents Assigned to Ashland Oil, Inc.
  • Dry blending with fibers
    Patent number: 4953135
    Abstract: Disclosed is a method and apparatus for avoiding the clumping of dry fibers having diameters and lengths in certain ranges during blending of such fibers into a dry or wet particulate material. The process comprises distributing fibers in a vaporous medium, and transporting fluidized fibers to a mixing zone containing a dry or wet particulate material. Concurrently with stirring and blending of the particulate material with fluidized fibers, the fluidized fibers having been separated at least partially from a fluidized vapor are gradually introduced into the mixing zone. This process avoids the phenomena of "balling" that otherwise occurs with certain fibers.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: August 28, 1990
    Assignee: Ashland Oil, Inc.
    Inventor: Donald M. Lee
  • Refractory coating for making refractory shells
    Patent number: 4948765
    Abstract: This invention relates to refractory coatings and their use. The refractory coating comprises:(1) a carrier, generally water;(2) an alpha alumina monohydrate;(3) an aluminum hydroxyhalide; and(4) a refractory material.The refractory coatings are used for coating patterns which are used to make refractory shells.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: August 14, 1990
    Assignee: Ashland Oil, Inc.
    Inventor: Robert L. Snook
  • Polyurethane-forming foundry binders containing a polyester polyol
    Patent number: 4946876
    Abstract: Certain polyester polyols are used in polyurethane-forming binders to improve the shakeout of molds and cores, made by a cold-box process, used to make low melting metal castings.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: August 7, 1990
    Assignee: Ashland Oil, Inc.
    Inventors: William G. Carpenter, William R. Dunnavant
  • Reusable plastic drum container assembly
    Patent number: 4941584
    Abstract: A reusable plastic drum container assembly having a fitting-receiving member in an opening provided in a drum head wherein the opening is formed by a cylindrically-shaped indentation portion extending perpendicularly from the top surface of the drum head and wherein the fitting-receiving member in cross-section is of an inverted U-shape having an inner cylindrically-shaped portion, a circularly-shaped base portion, and an outer cylindrically-shaped leg portion defining a channel and is disposed over the neck member of the drum head with an electromagnetic bonding material fused between the outer surfaces of the neck member and the interior surfaces of the fitting-receiving member.
    Type: Grant
    Filed: June 21, 1989
    Date of Patent: July 17, 1990
    Assignee: Ashland Oil Inc.
    Inventors: Robert B. Bowers, Mark Chookazian
  • Novel thioether amide diols and polyurethane polymers therefrom
    Patent number: 4940769
    Abstract: A process for preparing thioether amide diol comprising reacting a bicyclic amide acetal with hydrogen sulfide at a temperature in the range of from 20.degree. to 200.degree. C. wherein a mole ratio of bicyclic amide acetal to hydrogen sulfide is in the range of from about 1:1 to about 2:1 is described.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: July 10, 1990
    Assignee: Ashland Oil, Inc.
    Inventor: Anil B. Goel
  • Thermoset molding compositions catalyzed by keto-enol salt and 1,8-diaza-bicyclo(5.4.0)undec-7-ene
    Patent number: 4935453
    Abstract: Disclosed is a process for the catalyzed reaction of an isocyanate and an active hydrogen compound wherein the reaction is conducted in the presence of a novel catalyst comprising the salt of 1,8-diazo-bicyclo(5.4.0)undec-7-ene and a keto-enol of the formula ##STR1## where R is a non-acid containing cyclic residue. Preferred catalyzed reaction mixtures comprise Reaction Injection Molding urethanes (RIM). The novel catalyst salts provide a controlled induction period prior to the onset of gelation of the reaction mixture while providing complete cure of the reaction mixture thereafter.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: June 19, 1990
    Assignee: Ashland Oil, Inc.
    Inventors: Robert S. Bock, Timothy A. Tufts, Christopher T. Moss
  • Process for the preparation of a polyurethane from a storage stable polyol compositions
    Patent number: 4927862
    Abstract: Disclosed is a storage stable blend of a long chain polyol and a short chain diol wherein the diol is present in an amount whereby the diol and polyol form an incompatible blend. The blend is rendered storage stable by the addition of a compatibilizing amount of a urethane.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: May 22, 1990
    Assignee: Ashland Oil, Inc.
    Inventor: Timothy A. Tufts
  • Process for the manufacture of carbon fibers and feedstock therefor
    Patent number: 4927620
    Abstract: Disclosed herein is an improved pitch for making readily stabilizable, substantially nonmesophasic carbon fibers. The pitch has a softening point of about 250.degree. C. (480.degree. F.) or above and is produced from an unoxidized thermal petroleum pitch by selectively reducing or eliminating a portion of the low molecular weight materials in a very short period of time so that the tendency to produce mesophase pitch is eliminated or reduced and so that the chemical integrity of the components of the higher molecular weight fractions is preserved as much as possible. Also disclosed is a method of producing carbon fibers therefrom and rovings or mats from such fibers.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: May 22, 1990
    Assignee: Ashland Oil, Inc.
    Inventors: Clifford Ward, Eugene Chao, Roy E. Booth, Frank H. Turrill, Robert H. Wombles, John W. Newman, William P. Hettinger, Jr.
  • Vent system
    Patent number: 4924897
    Abstract: An intake system comprising a conduit with a valve means which permits only passage of air in one direction overcomes liquid solidification problems associated with transporting liquid sulfur so long as the length of the conduit is sufficient that the free end within the container is below the surface of the transported liquid.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: May 15, 1990
    Assignee: Ashland Oil, Inc.
    Inventor: Harold R. Brown
  • Primerless adhesive for fiberglass reinforced polyester substrates
    Patent number: 4923756
    Abstract: A laminated fiberglass reinforced polyester (FRP) substrate made using a primerless adhesive and the process of making the laminated FRP substrate. The primerless adhesive combines a prepolymer, an aliphatic polyisocyanate and a curative.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: May 8, 1990
    Assignee: Ashland Oil, Inc.
    Inventors: Daniel A. Chung, Laurence G. Dammann
  • Composite core assembly for metal casting
    Patent number: 4922991
    Abstract: Disclosed is a method for making metal castings wherein a composite core assembly is utilized. The composite core assembly comprises at least one casting core and one temporary core which are in intimate contact wherein the temporary core is removed prior to casting. The improvement of the present invention comprises forming the temporary core comprising an aggregate and binder of materials such that the temporary core is sufficiently soluble in aqueous solvent for its removal prior to metal casting. The casting core is not removed by the aqueous solvent.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: May 8, 1990
    Assignee: Ashland Oil, Inc.
    Inventors: Michael A. Pitcher, Albert L. Haugse, Richard L. Pelfrey, Gregory P. Sturtz
  • Oxirane primers for SMC adhesives and bonding method employing same
    Patent number: 4916018
    Abstract: A process for preparing novel composite structures by priming the surfaces of two or more substrates (such as SMC panels, etc.) with an effective amount of an epoxy resin prior to adhering said surfaces together with an adhesive (such as a polyurethane adhesive) wherein said structures have improved high temperature (about 400.degree. F.) tolerance is described.
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: April 10, 1990
    Assignee: Ashland Oil, Inc.
    Inventors: Anil B. Goel, Joseph G. Holehouse
  • Removal of coke and metals from carbo-metallic oils
    Patent number: 4915820
    Abstract: Coke and metals are removed from a carbo-metallic oil by contacting the carbo-metallic oil in a riser reaction zone with a relatively inert particulate sorbent material in the presence of steam and the resulting coked particulate sorbent material is regenerated in a regeneration zone in the presence of steam and oxygen to remove the carbonaceous deposits by means of oxidation, water gas reaction and carbon gasification. The operating conditions in the riser reaction zone and the regeneration zone are regulated to provide a maximum coke level on the regenerated particulate sorbent of about 0.25 wt. %.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: April 10, 1990
    Assignee: Ashland Oil, Inc.
    Inventor: William P. Hettinger, Jr.
  • Epoxy resin with polyamine-polyphenol solid salt in liquid poly(alkylene oxide) polyamine-polyphenol
    Patent number: 4916187
    Abstract: An adhesive composition which results from the mixture of two components, the first component comprising a polyepoxide and the second component comprising a finely dispersed solid salt of a polyamine and a polyphenol in a liquid adduct of a poly(alkylene oxide) polyamine and a polyphenol and the use of this non sagging, high performance adhesive in structural applications is described.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: April 10, 1990
    Assignee: Ashland Oil, Inc.
    Inventor: Anil B. Goel
  • Method for removal of furfural coke from metal surfaces
    Patent number: 4904368
    Abstract: A method for removing furfural-derived coke from metallic surfaces by heating in an oxygen-containing gas, such as air, for a time and at a temperature sufficient to change the crush strength of the furfural coke to a point which will permit easy removal of such coke, without such an evolution of heat that the metallurgical properties of said metal surfaces are undesirably changed.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: February 27, 1990
    Assignee: Ashland Oil, Inc.
    Inventor: Joe D. Turner
  • Acid/oxidizer catalyst system for storage stable, quick-cure phenolic resins of the resole or benzylic ether resole type
    Patent number: 4904753
    Abstract: Disclosed is a catalyst system which improves the cure time of acid-catalyzable resole resins while providing extended shelf life thereof. Broadly, the present invention includes a method for formulating an acid-catalyzed, non-aqueous resole resin composition and to the composition itself. The catalyst system comprises an acid catalyst and an oxidizing agent in an amount adequate for cure in at least about the same time that occurs by use of at least twice the amount of said acid catalyst alone. The shelf life of the catalyzed resole resin is greater with the inventive catalyst system than with an equivalent resole resin containing only the acid catalyst in twice the amount.
    Type: Grant
    Filed: March 23, 1988
    Date of Patent: February 27, 1990
    Assignee: Ashland Oil, Inc.
    Inventors: Golden F. Watts, Warren L. Robbins
  • Heat treatment of exchangers to remove coke
    Patent number: 4902403
    Abstract: A method for removing furfural-derived coke from metallic surfaces by heating in an oxygen-containing gas, such as air, for a time and at a temperature sufficient to change the crush strength of the furfural coke to a point which will permit easy removal of such coke, without such an evolution of heat that the metallurgical properties of said metal surfaces are undesirably changed.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: February 20, 1990
    Assignee: Ashland Oil, Inc.
    Inventor: Joe D. Turner
  • Primer for use on EPDM roofing materials
    Patent number: 4897137
    Abstract: This invention is a primer for use on EPDM roofing membranes in conjunction with neoprene (polychloroprene) based contact adhesives which comprises an admixture of thermoplastic block copolymers, halogenated butyl rubber, aromatic hydrocarbon reinforcing resin and solvent.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: January 30, 1990
    Assignee: Ashland Oil, Inc.
    Inventors: Dennis P. Miller, Laurence G. Dammann
  • Combination process for upgrading residual oils
    Patent number: 4894141
    Abstract: A process for upgrading topped crude oils and residual portions comprising material boiling above 552.degree. C. (1025.degree. F.) by the combination of partial demetallizing and decarbonizing of the residual oil before effecting zeolite catalytic cracking thereof is described in conjunction with a product separation process, a combined hydrocarbon gas product concentration section and the use of parallel arranged CO boilers to produce sulfur free flue gas and steam. Steam generated by the combination operation effectively reduces the energy requirement of the combustion process.
    Type: Grant
    Filed: January 3, 1984
    Date of Patent: January 16, 1990
    Assignee: Ashland Oil, Inc.
    Inventors: Lloyd E. Busch, Paul W. Walters, Oliver Zandona
  • Novel thioether amide diols and polyurethane polymers therefrom
    Patent number: 4891416
    Abstract: A process for preparing a polyurethane comprising reacting a thioether amide diol prepared by reacting a bicyclic amide acetal with hydrogen sulfide at a temperature in the range of from 20.degree. to 200.degree. C. wherein a mole ration of bicyclic amide acetal to hydrogen sulfide is in the range of from about 1:1 to about 2:1 is described.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: January 2, 1990
    Assignee: Ashland Oil, Inc.
    Inventor: Anil B. Goel