| Patent Number |
Title Of Patent |
Date Issued |
| D261486 |
Container closure or similar article |
October 27, 1981 |
|
| 6204346 |
Polymerization process |
March 20, 2001 |
| Polymerization processes for ethylene and at least one mono-1-olefin comonomer having from about three to eight carbon atoms per molecule in the presence of a twice-aged catalyst system comprising chromium supported on a silica-titania support and a trialkylboron compound is provided. |
| 5907064 |
Process for producing organic trisulfides |
May 25, 1999 |
| A process for producing an organic trisulfide compound comprises contacting, in the presence of a catalyst, a mercaptan with an organic polysulfide compound to produce a product mixture and optionally contacting the product mixture with an acid wherein the catalyst comprises a base a |
| 5146027 |
Methane conversion process |
September 8, 1992 |
| A method for converting methane to higher hydrocarbon products and coproduct water wherein a gas comprising methane and a gaseous oxidant are contacted with a nonacidic catalyst at temperatures within the range of about 700.degree. to 1200.degree. C. in the presence of a halogen prom |
| 4929365 |
Biofilm control |
May 29, 1990 |
| The present invention provides a method for the removal of biofilms composed of microorganisms from submerged surfaces in an aqueous medium comprising contacting said biofilm with an aqueous stabilized chlorine dioxide and at least one nutrient source, wherein said nutrient source is |
| 4863697 |
Catalytic alkylation apparatus |
September 5, 1989 |
| A continuous process for alkylating an alkylatable hydrocarbon in the presence of a acid-type catalyst in which the alkylatable hydrocarbon is contacted with an alkylating agent in the presence of a catalyst in a reaction zone so as to alkylate the alkylatable hydrocarbon. The reaction |
| 4737531 |
Waste heat recovery |
April 12, 1988 |
| In a heat exchange unit that recovers waste heat from carbon black smoke by preheating oxygen-containing gas such as air being passed to a carbon black producing reactor, a control loop is provided that automatically diverts the oxygen-containing gas being preheated through a by-pass lin |
| 4729885 |
High mixing reactor process |
March 8, 1988 |
| The moving of adjacent axial stream at sufficiently different speeds to create turbulence and rapid mixing of feedstock and hot gases in a carbon black reactor is utilized to provide a high surface area carbon black. |
| 4670602 |
Method of making disulfides using a combination reaction vessel and aspirator-mixer |
June 2, 1987 |
| There are disclosed a method and apparatus for effecting a chemical reaction. There is provided an aspirator-mixer or zone to which the reaction mass is pumped to activate the same and into which another reactant is furnished and from which admixed reaction mass and reactant are disc |
| 4668835 |
Novel tetracyclic trienes |
May 26, 1987 |
| The alkylation of para-substituted isopropyl benzenes with dipentenes employing an aluminum halide catalyst system produces novel tetracyclic compounds. |
| 4656154 |
Potassium carbonate with carbon supports and catalysts with elemental alkali metal |
April 7, 1987 |
| Catalyst supports, catalysts, method for the preparation thereof, and dimerization processes therewith are provided. Catalyst supports consist essentially of potassium carbonate with a crush strength of at least 5 pounds and at least one carbonaceous compound. Catalysts consist essen |
| 4637833 |
Inhibiting corrosion: benzylsulfinylacetic acid or benzylsulfonylacetic acid |
January 20, 1987 |
| Hydrocarbyl-substituted sulfinyl and sulfonyl carboxylic acids are effective corrosion inhibitors for surfaces of various metals. In one embodiment, mineral acid compositions such as aqueous hydrochloric acid metal cleaning solutions exhibit diminished corrosiveness when corrosion in |
| 4634794 |
Process for the production of allyl acetate |
January 6, 1987 |
| A process and catalyst for the acetoxylation of propylene, said catalyst consisting essentially of palladium, bismuth, and rubidium on a support. |
| 4632748 |
Cracking process |
December 30, 1986 |
| In a cracking process wherein used zeolitic catalyst is withdrawn from the cracking zone and treated with steam and then returned to the cracking zone, the improvement comprising diluting the steam with an organic compound. |
| 4629767 |
Hydrogenation process and catalyst |
December 16, 1986 |
| The hydrogenation of olefin polymers and especially diene polymers can be carried out effectively in a fixed bed mode of operation, preferably with up-flow of polymer solution, using a heterogeneous catalyst containing an active hydrogenation metal in which the catalyst support has defin |
| 4612991 |
Oil recovery process |
September 23, 1986 |
| A post-primary oil recovery process wherein the subterranean oil-bearing formation is treated by the sequential injection of (1) optional aqueous preflush to adjust connate water salinity, (2) aqueous saline surfactant system containing at least one acylated polypeptide salt surfactant, |
| 4611024 |
Propylene polymer composition containing a hydrotalcite and an acetal of an alditol |
September 9, 1986 |
| A propylene polymer composition containing a clarifier and a small amount of a hydrotalcite to enhance the effect of the clarifier. The resulting composition is of particular value as an injection molding grade resin. |
| 4591490 |
Removal of mercury from gases |
May 27, 1986 |
| Mercury is removed from a gas stream using anion exchange resins. |
| 4537690 |
Aqueous metalworking composition containing 2-hydroxyethyl-(3-chloro-2-hydroxypropyl)sulfide |
August 27, 1985 |
| A metalworking composition containing 2-hydroxyethyl-(3-chloro-2-hydroxypropyl)sulfide in an aqueous medium. A method for enhancing the extreme pressure lubricating properties of an aqueous metalworking composition by admixing therein 2-hydroxyethyl-(3-chloro-2-hydroxypropyl)sulfide. |
| 4523575 |
Collector means for solar energy collecting system |
June 18, 1985 |
| In accordance with the present invention, an improved collector means for a solar energy collector system having an absorber plate and a glazing panel spaced from at least one side of the absorber plate in which a cap means is coupled to and extends along one edge of the absorber plate a |
| 4517401 |
Olefin metathesis and catalyst |
May 14, 1985 |
| Olefins are converted into other olefins having different numbers of carbon atoms by contact with a catalyst comprising an inorganic refractory oxide support containing at least one of tungsten oxide and molybdenum oxide and a promoting amount of at least one methylating agent under cond |
| 4476097 |
Relief system |
October 9, 1984 |
| Hydrocarbon vapors containing HF, as from an HF alkylation refrigerated vent gas yield, the reactor settler, and the like are charged to a liquid knock-out drum to remove entrained liquid therefrom, the recovered liquid being pumped to storage in response to liquid level control on the |
| 4370170 |
Producing minimum asphalt-containing cationic emulsions employing specific conductance |
January 25, 1983 |
| Minimum content asphalt-in-water emulsions are prepared employing conductivity measurements. An emulsifying agent e.g., soap and water, a pH adjusting agent e.g., hydrochloric acid, to adjust the pH to be in the approximate range up from about 3 to about 5, and an ionizing salt are b |
| 4334420 |
Tube guide |
June 15, 1982 |
| Guiding unit protecting against the whipping motion of a free pipe end in a pipe straightening is provided for, which comprises hinged sections of a piece of plastic pipe. |
| 4322506 |
Polyphenylene oxide/rubber blending |
March 30, 1982 |
| Polyphenylene oxide is conveniently blended with conjugated diene-monovinylarene copolymers by using a mixed solvent of aromatic and paraffinic/cycloparaffinic hydrocarbons; preferably a polyphenylene oxide solution in an aromatic solvent is added to the copolymer cement prior to pol |
| 4319330 |
Fractional distillation column control |
March 9, 1982 |
| In a fractional distillation column, a desired ratio between the flow rate of a side draw product stream and the internal reflux flow rate at the particular tray from which a side draw stream is withdrawn from the fractional distillation column is maintained by manipulating the flow rate |
| 4318178 |
Control of a cracking furnace |
March 2, 1982 |
| The heat provided to a cracking furnace is manipulated so as to substantially maximize the value of the product stream flowing from the cracking furnace. An analysis of the product stream may be utilized to measure the ratio of a first constituent in the product stream to a second co |
| 4315894 |
Method and apparatus for producing carbon black |
February 16, 1982 |
| In a carbon black reactor having at least one combustion zone opening into a reaction zone, each combustion zone has opening thereinto, in a generally tangential direction, quench fluid inlet means operably connected to a source of quench fluid. The quench fluid is introduced into th |
| 4315382 |
Plant container |
February 16, 1982 |
| An improved container for plants or the like comprising a pot and a tray releasably securable to the bottom of the pot.The pot and tray are provided with snap lock means for connecting the pot and tray which snap lock means includes a plurality of upwardly extending tapered protubera |
| 4313921 |
Carbon black process |
February 2, 1982 |
| In a carbon black process with tangential hot combustion gas introduction the pressure drop across the reactor is reduced by introducing a gas stream radially outwardly in close proximity with the upstream confining reactor wall. |
| 4313920 |
Carbon black agglomerate production |
February 2, 1982 |
| Smoke containing unagglomerated carbon black is subjected to sonic carbon black agglomeration thereby reducing the filter load and the danger of heat exchanger blockage. |
| 4313820 |
Hydrodesulfurization of organic sulfur compounds and hydrogen sulfide removal with incompletely |
February 2, 1982 |
| Hydrogen sulfide is removed from a fluid stream by contacting the fluid stream which contains hydrogen sulfide with an absorbing composition comprising zinc, titanium and at least one promoter selected from the group consisting of vanadium, chromium, manganese, iron, cobalt, nickel, |
| 4313738 |
Substituted dihydro oxazines as hydrocarbon antioxidants |
February 2, 1982 |
| Hydrocarbon lube oil or hydrocarbon fuel for a combustion engine containing an amount of substituted dihydro oxazine sufficient to stabilize the hydrocarbon lube oil or hydrocarbon fuel against oxidative deterioration. A method for stabilizing either hydrocarbon lube oil or hydrocarbon f |
| 4313017 |
Selective hydrogenation of polynuclear aromatic reactants |
January 26, 1982 |
| Polynuclear aromatic reactants are selectively hydrogenated in the presence of hydrogen gas with a zinc titanate catalyst. |
| 4312968 |
Polymerization of olefins |
January 26, 1982 |
| A process for polymerizing alpha-olefins in the presence of a catalyst comprising two components. Component A is obtained by mixing a milled mixture of magnesium and particulate inorganic solid with an alcohol and then contacting the resultant product with a tetravalent halogenated t |
| 4312967 |
Polymerization catalyst and process |
January 26, 1982 |
| An olefin polymerization catalyst is provided comprising chromium oxide on a titanium-containing silica support having at least about 3 weight percent titanium in combination with an organoboron promoter. The titanium may be incorporated by coprecipitation with the silica gel or added |
| 4312784 |
Catalyst and process of polymerization of alpha monoolefins |
January 26, 1982 |
| Polymerization of alpha monoolefins employing a catalyst comprising (A) a component formed by intensive mixing (milling) of titanium halide, a Lewis base, anhydrous magnesium or manganese chloride, and an unsaturated additive, (B) trihydrocarbylaluminum and, optionally, a Lewis base, and |
| 4310973 |
Drying polymer solutions |
January 19, 1982 |
| The drying of a polymer solution by the removal of solvent is accomplished by flashing the polymer solution while spraying into a bed of substantially dry polymer particles. The dryer polymer particles coat the partially dried solution polymer droplets, and the remaining solvent is r |
| 4309898 |
Signal-to-noise ratio in chromatographic analysis |
January 12, 1982 |
| In a chromatographic analysis system, carrier fluid containing a sample fluid and pure carrier fluid are alternately supplied to both first and second fluid inlets of a chromatographic detector. Lock-in detection of the output of the chromatographic detector based on the frequency at whi |
| 4309487 |
Laminated armor |
January 5, 1982 |
| An armor structure is provided by laminating multiple units consisting of one or more ply of unidirectionally oriented polyolefin film or fibers which are positioned so that the lines of orientation of adjacent units are at angles to each other. The armor structure can either be used alo |
| 4302559 |
Conversion of alpha-methylstyrene-type monomers in the formation of copolymers with conjugated d |
November 24, 1981 |
| Copolymers of alpha-methylstyrene-type monomers and conjugated diene monomers are prepared by polymerizing an alpha-methylstyrene monomer using a first polar activator, adding a small amount of a conjugated diene monomer to cap the block of alpha-methylstyrene-type monomer polymer, and |
| 4302542 |
Fermentation with thermophilic mixed cultures |
November 24, 1981 |
| Single cell protein (SCP) and other fermentation products are produced by aerobic fermentation processes at relatively high fermentation temperature conditions employing oxygenated hydrocarbon compounds, such as an alcohol, as carbon and energy source material, and employing a unique the |
| 4301401 |
Dielectric constant detector |
November 17, 1981 |
| A dielectric constant detector, having a sample cell and a reference cell, is provided which is useful to provide an electrical signal that is proportional to the concentration of a component being passed through the dielectric constant detector. The fluid to be analyzed together with a |
| 4300394 |
Sonic wave travel time measuring system |
November 17, 1981 |
| A time measuring system is provided which automatically compensates for the propagation time of electrical pulses and sonic waves through the apparatus associated with a core analysis system. In this manner, the time required for a sonic pulse to propagate through a core sample is measur |
| 4300220 |
Three component detector and housing for same |
November 10, 1981 |
| A detector utilizing three seismometers is provided which is operable to detect three components of particle motion waves. |
| 4299998 |
Preparation of ethers |
November 10, 1981 |
| Ethers are prepared by reacting olefins and alcohols in the presence of a catalyst system comprising a palladium component and a copper component. The catalyst system can also contain an alkali metal or alkaline earth metal halide with an optional surfactant component also being present |
| 4299996 |
Alkyl aryl ether production |
November 10, 1981 |
| Phenol compounds are O-alkylated with olefins in the presence of acid resin catalysts to give aryl alkyl ethers. In a preferred embodiment, the catalyst comprises perfluorosulfonic acid ion exchange resins. |
| 4299951 |
Treating shaped arylene sulfide/sulfone polymer with organic liquid at elevated temperature |
November 10, 1981 |
| The tensile strength of shaped articles made from arylene sulfide/sulfone polymers is increased by treating the article with an organic liquid at an elevated temperature. In one embodiment, the organic liquid comprises at least one of selected hydrocarbons, alcohols, and esters. |
| 4298363 |
Fractionator feed tank pressure control |
November 3, 1981 |
| In a fractionation process in which at least two fractional distillation columns are cascaded in series, the vapor from the overhead accumulator associated with the first fractional distillation column in the series is provided to a feed tank for the second fractional distillation column |
| 4297506 |
Synthesis of esters |
October 27, 1981 |
| An organic ester is produced by conversion of an organic halide employing excess alkali metal carboxylate. A resultant reaction mass including solids comprised of alkali metal halide is obtained containing occluded in the solids portion an amount of otherwise difficult-to-recover desired |
