Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 4994514 | Encapsulation of electronic components with poly(arylene sulfide) containing mercaptosilane Electronic components can be encapsulated with a poly(arylene sulfide) composition containing a mercaptosilane such as, for example, 3-mercaptopropyltrimethoxysilane.... | 02/19/1991 |
| 4963651 | Method to recover poly(arylene sulfide)s with vaporized liquids A method is provided for recovering poly(arylene sulfide) from a liquid reaction mixture, comprising a liquid-phase poly(arylene sulfide) and a polar organic compound which can also function as a solvent for the polymer, and water. The liquid reaction mix... | 10/16/1990 |
| 4951921 | Polymers useful in the recovery and processing of natural resources Water-soluble polymers comprising an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore. Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by ... | 08/28/1990 |
| 4931171 | Pyrolysis of carbonaceous materials A process for the pyrolysis of carbonaceous materials at an elevated temperature or an elevated temperature and an elevated pressure in which a fuel is burned in the presence of a combustion supporting material, in an amount sufficient to supply at least ... | 06/05/1990 |
| 4889840 | Catalyst compositions useful for olefin isomerization and disproportionation and method for preparing the catalyst compositions Catalyst composition is provided which is prepared by impregnating high surface area, high pore volume alumina with at least one magnesium compound convertible to the oxide, and, optionally, at least one alkali metal compound which is cnvertible to the ox... | 12/26/1989 |
| 4883552 | Pultrusion process and apparatus An apparatus and process are provided for continuously consolidating and shaping a plurality of continuous prepreg structures into a unitary formed product structure. Each prepreg structure comprises a solidified thermoplastic resin matrix containing long... | 11/28/1989 |
| 4880901 | Arylene sulfide terpolymers and processes for making them A process for the production of an arylene sulfide terpolymer is provided comprising reacting at least one alkali metal sulfide, at least one p-dihalo unsubstituted benzene, at least one polyhalo aromatic compound having more than two halogen substituents... | 11/14/1989 |
| 4863892 | Antifoulants comprising tin, antimony and aluminum for thermal cracking processes The formation of carbon on metals exposed to hydrocarbons in a thermal cracking process is reduced by contacting such metals with an antifoulant selected from the group consisting of an organic compound of chromium, a combination of tin and elemental chro... | 09/05/1989 |
| 4860783 | Apparatus for controlling the pressure of gases flowing through a conduit An apparatus for the control of velocity and pressure of hot gases flowing through a conduit wherein generally spherically shaped objects of refractory material are disposed within such conduit during the operation thereof to provide a constriction of the... | 08/29/1989 |
| 4853444 | Magnesium halide hydrates and polymerization catalysts prepared therefrom An inexpensive one-step process is disclosed for producing the lower hydrates of magnesium dihalide by comminuting hydrated magnesium dihalide and anhydrous magnesium dihalide. Also the use of such hydrous magnesium dihalide products in the olefin polymer... | 08/01/1989 |
| 4842694 | Apparatus for treating thermoplastic polymers Apparatus for purifying, devolatilizing and/or sheeting a thermoplastic material in which a high density, flowable heat exchange material, having a density substantially above the density of the thermoplastic material and which is essentially immiscible t... | 06/27/1989 |
| 4841018 | Catalytic preparation of poly(arylene sulfide) from halothiophenol A process for the catalytic self-condensation of halothiophenol to form a poly(arylene sulfide) is disclosed. The reaction mixture includes an alcohol solvent, the halothiophenol, an alkaline reagent and a catalyst comprising a Group VIII metal. The polym... | 06/20/1989 |
| 4839411 | Solid state curing of poly(arylene sulfide) resins in reduced oxygen atmospheres Virgin poly(arylene sulfide) resins are oxidatively cured by heat treatment at an elevated temperature below the melting point of the resin, under an oxidizing atmosphere comprising less than a 20 volume % oxygen concentration. The resulting polymer exhib... | 06/13/1989 |
| 4832915 | Vapor recovery from particles containing same A system for recovering vapor, such as residual isobutane, from powder, such as polyethylene powder, comprises surge vessel and a two-compartment purge column. The polymer passes through the surge vessel by means of valves such as ball valves on the inlet... | 05/23/1989 |
| 4829041 | Composition of matter and method for conversion of C3 and C4 hydrocarbons Compositions of matter, including: a composition consisting of iron oxide and magnesium oxide; a composition comprising iron oxide, manganese oxide and magnesium oxide; a composition comprising a small amount of iron oxide and a larger amount of an oxide ... | 05/09/1989 |
| 4828021 | Heat exchanger baffle A plurality of parallel tubes in the form of at least a first plurality of parallel tube rows and a second plurality of parallel tube rows are supported by a baffle comprising an outer ring capable of surrounding the tubes and a plurality of parallel rods... | 05/09/1989 |
| 4826669 | Method for carbon black production High structure carbon black is produced in an oil furnace reactor characterized by abrupt expansions in the reaction flow passage following the reactor throat.... | 05/02/1989 |
| 4825517 | Apparatus for drawing and interlacing Spin-drawing apparatus for simultaneously drawing and optionally entangling one or more yarn ends. The apparatus comprises three pairs of heated cylindrical rolls which provide for two stages of yarn drafting, the first two pairs of rolls being inclined a... | 05/02/1989 |
| 4823866 | Tube support for heat exchanger The tubes in a tube bundle through which heat exchange medium flows transversely are supported by rods arranged at a substantial angle with respect to the direction of fluid flow. In a preferred embodiment, tube bundles supported by rods are positioned in... | 04/25/1989 |
| 4820785 | In situ comonomer generation in olefin polymerization A catalyst system is produced by first forming a chromium catalyst on a predominantly silica support, activating in an oxygen-containing ambient and thereafter subjecting the thus activated composition to carbon monoxide reduction. The resulting reduced s... | 04/11/1989 |
| 4818442 | Disproportionation process A process for the disproportionation of olefins comprising contacting said olefins under suitable reaction conditions with a neutral-carbene complex catalyst and then using anhydrous ammonia to effect separation of the catalyst and the organic products.... | 04/04/1989 |
| 4814224 | Poly(arylene sulfide ketone) composites A process to form a fiber-reinforced composite having a continuous thermoplastic matrix of poly(arylene sulfide ketone) resins is provided. The composite is useful to form shaped articles with high temperature resistance. The composite can be prepared by ... | 03/21/1989 |
| 4812552 | Process for preparing poly(arylene sulfide ketone) with water addition A process and product produced therefrom for preparing a melt stable, high molecular weight poly(arylene sulfide ketone) from the addition of water to a reaction mixture containing a polyhalobenzophenone and an alkali metal sulfide. The water being presen... | 03/14/1989 |
| 4808694 | Poly(arylene sulfide sulfone) polymer containing ether groups A two-step process to make a poly(arylene sulfide sulfone) polymer exhibiting improved high temperature properties is described. In the first step a prepolymer characterized as dihalo-terminated polyethersulfone oligomers is prepared by reacting an aromat... | 02/28/1989 |
| 4806513 | Silicon and fluorine-treated alumina containing a chromium catalyst and method of producing same In one embodiment of this invention a surface silicated alumina composition, as opposed to conventional silica alumina, is provided. Such composition may also be fluorided and/or phosphated or phosphited. The resulting compositions are broadly useful but ... | 02/21/1989 |
| 4804487 | Antifoulants for thermal cracking processes Combinations of gallium and tin as antifoulant compositions for use in thermal cracking.... | 02/14/1989 |
| 4803253 | Ethylene polymer produced using a catalyst comprising a phosphate and with a bis-(cyclopentadienyl)chromium(II) compound In accordance with one embodiment of this invention, a bis-(cyclopentadienyl)chromium(II) compound is introduced onto an activated phosphate-containing support and utilized in conjunction with an organometal cocatalyst, such as an alkylaluminum. In accord... | 02/07/1989 |
| 4800227 | Process for the production of lactams A one-step method for the reductive amination of a heterocyclic to produce a nitrogen-containing heterocyclic. The feedstock is contacted with a mixed metal catalyst in which the metal comprises palladium and one of ruthenium, rhodium or rhenium.... | 01/24/1989 |
| 4800113 | Fiber reinforced thermoplastic articles and process for the preparation thereof Processes for preparing fiber reinforced thermoplastic articles are provided, for example, thermoplastic fibers and reinforcement fibers can be intermingled to produce a composite yarn, which is used to weave a fabric. then the fabric heated to produce a ... | 01/24/1989 |
| 4800014 | Catalytic cracking process A mixing chamber for catalyst and oil in a catalytic cracking unit in which atomized oil is introduced preferably axially in a preferably vertically oriented transfer line or riser reactor from an atomization chamber segregated from flow of cracking catal... | 01/24/1989 |
| 4799553 | Petroleum sulfonate adjuvants in epoxy resin corrosion-inhibiting composition A composition is provided which, when applied to a metal surface, forms a corrosion-inhibiting film thereon. The composition comprises an epoxy resin, and a petroleum sulfonate, usually in a hydrocarbon diluent. The composition can further comprise a poly... | 01/24/1989 |
| 4798863 | Zinc titanate in poly (arylene sulfide) compositions Zinc titanate is used in poly(arylene sulfide) compositions to improve encapsulation properties. Electronic components are encapsulated with poly(arylene sulfide) compositions containing zinc titanate.... | 01/17/1989 |
| 4798801 | Production of methane by anaerobic fermentation of waste materials A method of producing methane from the anaerobic fermentation of waste materials, such as municipal solid waste, in a series of cavities in the earth holding such solid waste material and covered with earth excavated from the next adjacent cavity. Various... | 01/17/1989 |
| 4796695 | Tube supports The tubes in a tube bundle which is laid out in an alternating array of tubes and empty lanes are supported by corrugated slats positioned in the empty lanes, separating adjacent rows of tubes, the corrugations of each of the slats extending along the len... | 01/10/1989 |
| 4795709 | Solvent-induced autolysis of cells A process to recover proteins, such as enzymes, from yeast cells, which comprises forming an admixture of yeast cells, water, and a minor effective amount of a polychloro aliphatic hydrocarbon, at a suitable pH, and incubating for a suitable time and temp... | 01/03/1989 |
| 4793972 | Corrosion inhibition of polymethylpentene The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates and/or poly[[6-[(1,1,3,3-... | 12/27/1988 |
| 4789498 | Polymer welding process and composition A resinous block copolymer, such as butadiene/styrene block copolymer, having an antiblocking agent incorporated therein, such as a microcrystalline wax, is bonded or welded together with a composition containing at least one hydroxyl-ether and/or keto-et... | 12/06/1988 |
| 4788019 | Method of molding a polymer composition containing a tetraalkenyl orthosilicate A method for producing molded articles by supplying to a mold a powdered thermoplastic material; heating the mold to fuse the material and cooling the mold to cause the fused thermoplastic material to solidify. The article is molded from a high density mo... | 11/29/1988 |
| 4787440 | Spiral flow in a shell and tube heat exchanger Rod type supports or baffles are disclosed for arrays of tubes, especially those arranged in the form of a tube bundle. Each baffle comprises a pair of arcuate surfaces with a plurality of rods extending therebetween and each rod being non-normally dispos... | 11/29/1988 |
| 4786424 | Aqueous metal-working composition and process Novel metal-working process and aqueous metal-working fluids are provided. The aqueous metal-working fluids contain at least one sodium hydrocarbylthiocarboxylate as an extreme pressure (EP) additive.... | 11/22/1988 |
