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JPS5642965B2 |
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JPS5692992A |
The invention relates to a process for the separation of a hydrocarbon charge into a fraction which precipitates at the operating temperature and a fraction which remains liquid at that temperature. This process is of the incremental-dil...
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JPS5620087A |
PURPOSE: To obtain a produced oil of a low sulfur content and a low pour point from a hydrocarbon oil, by a method wherein hydrogenolysis and hydrodesulfurization are simultaneously carried out in the presence of a catalyst in which a sp...
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JPS5549116B2 |
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JPS55145793A |
An improved process for catalytically dewaxing a hydrocarbon oil is disclosed. In this process the waxy oil is contacted in the presence of hydrogen with a dense zeolitic dewaxing catalyst associated with a nickel-tungsten hydrogenation ...
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JPS5539594B2 |
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JPS55127491A |
Waxy hydrocarbon oils, such as lubricating oil stocks, jet fuels, kerosenes or other distillate fuels, are catalytically dewaxed with synthetic offretite, preferably associated with a hydrogenation metal such as platinum, palladium, nick...
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JPS5523319B2 |
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JPS5522520B2 |
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JPS5578090A |
Waxy distillate lubricating oil stocks suitable forthe preparation, by conventional unit processes, of high V.I., low pour point lubricating oils, are advantageously catalytically dewaxed with macrocrystalline ZSM-5 (crystalline largerth...
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JPS5515518B2 |
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JPS5548286A |
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JPS5442003B2 |
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JPS5428843B2 |
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JPS5422447B1 |
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JPS545A |
A process for making refrigeration oils without acid treating and clay contacting steps which comprises subjecting a naphthenic oil to a first hydrogenation step at a temperature of from about 550 DEG to about 660 DEG F, a hydrogen press...
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JPS53145281U |
1508079 Rotary filter TEXACO DEVELOPMENT CORP 25 May 1976 [7 July 1975] 21544/76 Heading BID A rotary drum filter (Figs. 1, 2 not shown) is partly immersed in a wax-oil-solvent slurry to be filtered and has circumferentially spaced perip...
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JPS5336842B2 |
1455597 Wax crystal growth control FOSTER WHEELER CORP 1 May 1974 [25 May 1973] 19031/74 Heading BIG [Also in Division C5] The rate of wax crystal growth in an oil dewaxer having cooled pipes through which the oil flows and in which scra...
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JPS5397006A |
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JPS5323324B2 |
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JPS5352509A |
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JPS5335704A |
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JPS5243844B1 |
1311400 Lubricating oils TEXACO DEVELOPMENT CORP 16 Dec 1971 [28 Dec 1970] 58561/71 Heading C5E Lubricating oils are made from a vacuum distillate of a paraffin base crude oil by solvent refining to form a first raffinate which is dewaxe...
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JPS52130803A |
PURPOSE: To obtain purified wax having good hue, hue stability and light resistance by treating with an adsorbent and then purifying by hydrogenation a crude petroleum wax containing contamination which can not be removed by conventional...
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JPS5239043B2 |
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JPS5222841B2 |
1451860 Extrusion aids for thermoplastics polymers CONTINENTAL OIL CO 12 Dec 1974 [17 Dec 1973 (2) 1 May 1974 (2)] 53814/74 Heading C3P [Also in Division C5] Compositions which are friable at ambient temperatures are prepared by mixing a...
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JPS523727B2 |
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JPS529176A |
1508079 Rotary filter TEXACO DEVELOPMENT CORP 25 May 1976 [7 July 1975] 21544/76 Heading BID A rotary drum filter (Figs. 1, 2 not shown) is partly immersed in a wax-oil-solvent slurry to be filtered and has circumferentially spaced perip...
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JPS51148705A |
A dewaxing process is provided in which a mixture of a solvent comprising propylene-acetone and a waxy petroleum oil is contacted with a cold aqueous solution of acetone and methanol. The aqueous acetone-methanol solution, which is immis...
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JPS5147685B1 |
1,182,161. Waxes derived from maleic acid compounds. PETROLITE CORP. 2 Feb., 1967 [14 Feb., 1966; 9 Jan., 1967], No. 5129/67. Heading C2C. [Also in Divisions C3 and C5] A wax-maleic composition (A) is obtained by the free-radical reactio...
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JPS5145102B2 |
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JPS51128916A |
The useful process life of aqueous urea solutions used in mineral oil urea dewaxing processes may be significantly prolonged by contacting with an acidic ion exchange resin at least a portion of the urea solution recovered from n-paraffi...
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JPS51124105A |
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JPS5133124B1 |
1307728 Dispersing measured quantities of granular material EDELEANU GmbH 24 July 1970 [11 Sept 1969] 36028/70 Heading B8N [Also in Division C5] The charging valves illustrated in Figs. 1 and 2, each comprising a rotor 1 and a housing 3,...
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JPS5174004A |
In a mineral dewaxing process, the oil solvent and the wax-containing mineral oil feed are dehydrated by a combination of flash evaporation, steam stripping and azeotropic distillation.
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JPS5120526B1 |
1308818 Dewaxing petroleum oils; waxes ESSO RESEARCH & ENG CO 16 Nov 1970 [1 Dec 1969] 54441/70 Headings C5E and C5W In a process for dewaxing petroleum oil the oil 1 is passed through a cooling tower 3 which comprises a plurality of sta...
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JPS5115047B1 |
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JPS515408B2 |
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JPS5185B1 |
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JPS5036641B2 |
The addition of 20-60 wt.% of hollow carbon microspheres to the wax used for prepn. of precision investment castings produces a wax which has better thermal contractive and expansive properties and is also stronger. However, it is more v...
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JPS5034042B1 |
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JPS5028082B1 |
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JPS5096504A |
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JPS5018155B1 |
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JPS5017201B2 |
1339780 Dewaxing hydrocarbons PHILLIPS PETROLEUM CO 24 May 1971 [25 May 1970] 16708/71 Heading C5E Petroleum distillates are dewaxed in the absence of added solvent by adding a dewaxing aid comprising a hydrogenated butadienestyrene copo...
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JPS5062904A |
In a urea dewaxing process, a powdery adduct, capable of being effectively separated by centrifuging, is formed at a temperature range of from about 20 DEG to 40 DEG C. if particular oil solvent mixtures are employed. Useful solvent mixt...
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JPS5013803B1 |
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JPS5050492A |
1482972 Oxidized polyolefin waxes NITCO CHEMICAL CORP 16 Aug 1974 [20 Aug 1973] 36221/74 Heading C3P [Also in Division C5] C 28-48 alpha-olefin waxes, which are the byproduct of a Ziegler ethylene polymerization process, are oxidized to ...
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JPS5038703A |
Mineral oils containing small amounts (less than 2 weight percent) of normal paraffins may be urea dewaxed to produce refrigerator oils having Freon cloud or flock points of at least minus 55 DEG C. by utilizing large excesses of the amo...
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JPS508723B1 |
Waxy oil is dewaxed by shock chilling with prechilled solvent under conditions of agitation sufficient to obtain substantially instantaneous mixing at a plurality of points along the length of a vertical tower wherein the velocity of sol...
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