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JPH0142994B2 |
The dewaxing aid comprises: (a) lithium isostearate and (b) a polymer of an ester of at least one aliphatic (suitably C6-C30) alcohol with methacrylic acid or acrylic acid, the polymer having an average molecular weight of from 300,000 t...
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JPH01223196A |
PURPOSE: To provide lube base oil or blend raw material oil with high yield by isomerizing crude wax through the use of a specified hydrogenation metal carried halide refractory metal oxide base. CONSTITUTION: Group VIII metal (mixture) ...
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JPH01201392A |
PURPOSE: To execute dewaxing with the formation of gaseous products suppressed by bringing a wax-contg. hydrocarbon oil to contact with a specified gallium silicate-contg. catalyst in the presence of hydrogen at a high temp. under high p...
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JPH0134643B2 |
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JPH01172493A |
PURPOSE: To obtain a low-flow point lubricant with oxidation resistance by bringing a wax-rich feeding raw material into contact with a sorption agent at a specific temperature and dewaxing. CONSTITUTION: The dewaxed lubricant base oil s...
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JPH0199649A |
PURPOSE: To efficiently activate a deactivated catalyst by bringing the zeolite catalyst of a specific compsn. into contact with an aq. ammonium soln. of pH ≥8 for 2 to 72 hours at 40 to 200°C under an ammonium atmosphere. CONSTITUTIO...
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JPS6470594A |
PURPOSE: To effectively obtain a lubricant having sufficiently low pour point by an extended dewaxing cycle by partially dewaxing a highly waxy feed having a paraffin content while keeping a constant temperature of a reactor inlet and th...
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JPS6436689A |
PURPOSE: To obtain a highly dewaxed oil in high yield by forming a clearance between a tip of a paddle and an inner wall of a cooling measure, by rotating the paddle in a specified speed and by securing a low apparent slurry-viscosity us...
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JPS649289A |
PURPOSE: To efficiently hydrogenate and dewax a heavy oil feedstock by subjecting the feedstock of a liquid phase and hydrogen-contg. reactive gas to a counter flow treatment under controlled condition in a reactor having a porous fixed ...
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JPS6349542B2 |
A process for denitrogenation of high nitrogen content hydrocarbon feeds comprising contacting the feed with hydrogen under denitrogenation conditions in the presence of a catalyst comprising an active metallic component comprising at le...
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JPS63202696A |
Dewaxed oils can have their low temperature performance improved by the removal of residual wax by adsorption of said residual wax onto a hydrophobic molecular sieve. The wax-laden hydrophobic molecular sieve is regenerated by use of dew...
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JPS63199289A |
Solvent dewaxing of waxy hydrocarbon oils is improved by using a poly (n-C24) alkyl methacrylate polymer dewaxing aid in combination with lower melting point weight poly (C8-C20) alkyl methacrylate polymer dewaxing aids. The solvent dewa...
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JPS63161073A |
Process for the manufacture of lubricating base oils (8A, 8B, 8C, 8D) wherein a hydrocarbon feedstock is catalytically treated (10) in the presence of hydrogen at elevated temperature and pressure and wherein at least part of a heavy fra...
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JPS63159495A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS6330358B2 |
In a DILCHILL* dewaxing process employing rotary drum wax filters, the waxy slurry in the filters must be periodically dumped and the filters washed with hot solvent to remove wax fines which plug the cloth. The dumped slurry contains us...
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JPS63129014A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS63101488A |
A waxy hydrocarbon feedstock is converted into a product hydrocarbon of reduced normal paraffin content by either dewaxing or hydrodewaxing the feedstock in the presence of a dewaxing or hydrodewaxing catalyst under conditions such that ...
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JPS63501156A |
This invention relates to novel emulsifiable polyethylene paraffin blend compositions, the blend compositions having a viscosity of about 95 to 2,600 cp at 150 DEG C. and an acid number of about 15 to 17 milligrams KOH/gm, said blend com...
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JPS6320269B2 |
PURPOSE:Wax for agriculture forming stable emulsion, having improved wet resistance, reistance to fats and oils, etc., not preventing the growth of fruits, obtained by adding a specific adsorbing substance to a specified waxy substance, ...
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JPS6317876B2 |
An improved dilution chilling dewaxing process for waxy petroleum oils wherein the dewaxed oil yield is increased and the solvent recovery requirements are decreased by recycling solvent-rich wash filtrate from the first stage wax filter...
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JPS62256719A |
A crystalline aluminium silicate having an X-ray diffraction pattern substantially as shown hereinafter: Process for the preparation of the crystalline aluminium silicate which comprises maintaining an aqueous alkaline starting mixture c...
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JPS6247237B2 |
A waxy hydrocarbon oil, such as a bright stock fraction, is dewaxed in a ketone dewaxing process at an increased rate, relative to existing processes, by employing polyvinylpyrrolidone (PVP) as a dewaxing aid. Preferably the PVP has a nu...
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JPS6247233B2 |
A process is disclosed for separation of straight chain paraffins from a mixture of paraffinic hydrocarbons by selective adsorption on a molecular sieve followed by desorption of the straight chain paraffins with gaseous hydrogen.
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JPS6240059B2 |
A catalyst and process are described for hydrofining petroleum wax comprising contacting the wax with hydrogen in the presence of a catalyst comprising at least one metal hydrogenating component on a porous alumina/silica carrier contain...
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JPS62190286A |
A process for catalytic dewaxing of more than one refinery-derived lubricating base oil precursor which comprises contacting in a first reaction zone in the presence of a hydrogen-containing gas at hydrodewaxing conditions a first feed s...
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JPS62184094A |
A multibed hydrodewaxing process and apparatus for hydrodewaxing a hydrocarbon feedstock is disclosed. A two-phase mixture of H2 and liquid hydrocarbon passes through a series of spaced catalyst beds. Reaction vapors, containing olefins,...
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JPS6231040B2 |
Condensation products made by reacting an alpha-hydroxyalkyl hydroxy-aromatic compound also having at least one non-fused hydrocarbyl substituent with at least one olefinic nitrile, carboxylic acid or carboxylic acid derivative are usefu...
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JPS62501368A |
Dewaxing processes for hydrocarbon feedstocks are disclosed using novel catalysts comprising specific silicoaluminophosphates of U.S. Patent No. 4,440,871. The products of the instant dewaxing processes are characterized by lower pour po...
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JPS62119294A |
A solvent extract obtained from a conventional hydrocarbon solvent extraction process, for example one employing furfural as the extraction solvent, is cooled and separated by decantation to provide a pseudo-raffinate containing most of ...
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JPS6295388A |
Premium jet fuel is produced by dewaxing aromatic vacuum gas oil boiling above the specification for jet fuel over zeolite beta and fractionating the dewaxed material to produce a kerosene fraction boiling in the jet fuel range. Conventi...
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JPS6218595B2 |
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JPS621991B2 |
Waxy, normal paraffin-type hydrocarbons present in petroleum oil feedstocks are selectively hydrocracked to hydrocarbons boiling below the boiling range of the feedstock by contacting the oil, in the presence of hydrogen, with a catalyst...
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JPS6154353B2 |
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JPS6150997B2 |
An improved process for producing low pour point, high VI synthetic oils from feedstocks containing wax and residual olefinic unsaturation, said feedstocks having been obtained by thermal, non-catalytic polymerization of linear, C6-C20 c...
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JPS61243892A |
An improved method which provides for an extended cycle length in catalytic lube dewaxing and easier catalyst regeneration. The method may incorporate catalytically dewaxing a feedstock in a fixed bed reactor with or without product recy...
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JPS61188491A |
PURPOSE: To obtain a dewaxed oil at low cost with high dewaxing efficiency, by adding a light oil fraction and a polyalkyl (meth)acrylate to a heavy oil fraction, mixing them while heating and, after cooling, separating a wax from the mi...
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JPS61174296A |
A process for dewaxing a hydrocarbon feedstock, particularly a lube stock, comprises contacting the feedstock under dewaxing conditions with a catalyst composition comprising (i) a catalytically active porous crystalline aluminosilicate,...
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JPS61133291A |
Lubricating oil stocks produced by catalytic dewaxing and subsequent hydrotreating are stabilized against oxidation by the addition of hydrogen sulfide to the feed to the catalytic dewaxing unit. Preferably the hydrotreater effluent is t...
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JPS61130393A |
Waxy distillate feedstocks are dewaxed by passing the waxy feedstock over a catalyst bed containing a mixture of medium pore zeolite and large pore zeolites having a Constraint Index less than 2 and having hydroisomerization activity in ...
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JPS6121985B2 |
1402981 Hydrocarbon conversion MOBIL OIL CORP 18 Jan 1974 [9 Feb 1973] 02372/74 Heading C5E Hydrocarbon conversions are carried out using a catalyst comprising a ZSMÀ5 type zeolite defined by X-ray diffraction pattern having an ultimate...
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JPS61108693A |
Process for dewaxing heavy distillate and residual feed. Easily converted waxes are partially removed in a first catalytic dewaxing step, and the resulting product is separated to remove the light ends. The heavy liquid fraction, which c...
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JPS6120600B2 |
Waxy, normally solid hydrocarbons are alkylated to form liquid hydrocarbons boiling in the lube oil range by contacting the wax and a low molecular weight olefin, such as ethylene, with a catalyst comprising a C3-C5 carbon atom secondary...
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JPS6197387A |
PURPOSE: To prepare dewaxed oil with a good yield consistently over a long period, by bringing hydrocarbon oil into contact with a catalyst consisting of specified crystalline aluminosilicate and fluorine compd. CONSTITUTION: A reaction ...
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JPS6118598B2 |
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JPS6115117B2 |
An improved DILCHILL* dewaxing process wherein waxy lubricating oil stocks are solvent dewaxed by contacting them with successive increments of cold dewaxing solvent at a plurality of points along the height of a vertical tower divided i...
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JPS6111992B2 |
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JPS6146269A |
In order to separate the dispersed phase from a continuous background fluid phase together forming a phase mixture (for example, contaminant particles from a continuous liquid phase), charge is injected into the mixture with a charge inj...
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JPS60229986A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS60217218A |
Copolymers of dialkyl fumarate and vinyl acetate having Specific Viscosities of at least 2.5 at 2% polymer concentration in xylene at 40°C, and wherein at least 50 wt. % of said alkyl groups are C20 to C24, are useful as dewaxing aids, ...
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JPS60212487A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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