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JP2540038B2 |
The invention relates to a process for the extraction of paraffins from mixtures obtained by the sulphoxidation of paraffins having a number of carbon atoms comprised within the range of from 12 to 18, which is characterized in that as t...
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JPH08508761A |
A process for solvent dewaxing a waxy oil feed to produce a lubricating oil by contacting a warm waxy oil feed in counter-current with a cold oil/solvent filtrate stream through a selectively permeable membrane to transfer cold solvent t...
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JPH08211973A |
PURPOSE: To provide a PC card easily operatable at a low voltage from the first in the PC card operatable in both standard voltage and low voltage. CONSTITUTION: The memory space of an attribute memory 4 for storing attribute information...
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JPH0829935B2 |
Process for the preparation of ferrierite which comprises maintaining an aqueous starting mixture containing at least one silicon compound, at least one aluminium compound, at least one alkali metal (M) compound and at least one organic ...
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JPH0867883A |
PURPOSE: To perform the hydrodewaxing of a hydrocarbon feedstock in a high yield into a dewaxed oil having an excellent viscosity index by bringing the hydrocarbon feedstock into contact with hydrogen and a specific supported catalyst. C...
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JPH0821889B2 |
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JPH0813974B2 |
The filtration performance of a slurry containing crystallized wax, dewaxed oil and dewaxing solvent is improved by use of an agitator means which possesses a characteristic dimension which when divided by the average wax crystal diamete...
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JPH0811794B2 |
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JPH0811795B2 |
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JPH08912B2 |
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JPH083571A |
PURPOSE: To provide a method for isomerizing a wax by which a base oil for a lube oil, excellent in optical stability and having a high viscosity index is economically obtained in a high yield by using one kind of catalyst. CONSTITUTION:...
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JPH082119A |
PURPOSE: To provide thermal transfer printing paper capable of forming an image with high transfer sensitivity in a high gradation area without matting the same. CONSTITUTION: Thermal transfer printing paper is constituted by providing a...
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JPH07116452B2 |
A process for producing a lubricant base oil with low pour point and high aromaticity from a feedstock oil which is either a distillate fraction boiling at 250 DEG C or above that is obtained from a paraffin base or mixed base crude or a...
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JPH07116454B2 |
This invention relates to solvent dewaxing processes, for dewaxing waxy hydrocarbon oils using a dewaxing aid, which dewaxing aid comprises a mixture of (A) polyalkyl arcylate having alkyl group side chain length of from 10-26 carbons (e...
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JPH07116453B2 |
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JPH07316567A |
PURPOSE: To provide a dewaxing assistant effective for a relatively low-viscosity oil having an SAE of 20-10 as well as for a relatively high-viscosity oil having an SAE of ≥30 and provide a dewaxing process using the assistant. CONSTI...
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JPH07110818B2 |
Mixtures of C12-C18 n-paraffins with paraffinsulphonic acids having the same number of carbon atoms, water and sulphuric acid, and obtained by sulphoxidation of said paraffins with SO2 and O2 in the presence of water and UV radiation are...
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JPH07108892B2 |
Mixtures of C12-C18 n-paraffins with paraffinsulphonic acids having the same number of carbon atoms, water and sulphuric acid, and obtained by sulphoxidation of said paraffins with SO2 and O2 in the presence of water and UV radiation are...
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JPH0798947B2 |
A process for the separation of solvents from hydrocarbons dissolved in said solvents by contacting a feed solution (e.g. obtained from a dewaxing unit) comprising hydrocarbons dissolved in an aromatic solvent and a polar aliphatic solve...
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JPH0788515B2 |
Crude oils, lubricating oils or fuel oils have their flow point improved by adding to the crude oil, lubricating oil or fuel oil a minor proportion by weight of a polymer containing the repeating units: where (x) is an integer and y is 0...
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JPH0781147B2 |
57 A catalytic dewaxing process using a mixed zeolite catalyst which combines the following components: a first zeolitic catalyst having a Constraint Index not less than 1, a second, different, catalytic component of specified characteri...
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JPH0775671B2 |
PURPOSE:To protect the outer surfaces of zeolite particles and heighten its function, by forming zeolite with composite oxides comprising zinc oxide and chromium oxide (Zn/Cr=0.1-10 atomic ratio) in 1-500 times wt. to that of zeolite int...
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JPH07207282A |
PURPOSE: To partially dehydrate a wet solvent mixture recovered from a dewaxing operation by subjecting it to a specified distillation operation. CONSTITUTION: The number of trays 3, 4, and 5 may be varied. A mixture M2 formed by partial...
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JPH0763626B2 |
PURPOSE:To obtain lubricating base oil having a high viscosity index in a high yield with a catalyst ensuring a high rate of isomerization and a low rate of cracking. CONSTITUTION:Alumina is mixed with silica gel, kneaded, dried and fire...
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JPH0759540B2 |
A quaternized aminoamide-modified wax obtainable by amidating, with a polyamine containing a single primary amino group, a carboxy group-containing, oxidized hydrocarbon wax which may be partially saponified, and quaternizing at least on...
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JPH07504901A |
Processes for converting a wide variety of aromatic hydrocarbons, such as polyalkylaromatics, into commercially useful para-substituted aromatics such as para-xylene are disclosed. The aromatic hydrocarbon feed stream is first partially ...
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JPH07504611A |
Processes for converting a wide variety of aromatic hydrocarbons, such as polyalkylaromatics, into commercially useful para-substituted aromatics such as para-xylene are disclosed. The aromatic hydrocarbon feed stream is first partially ...
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JPH07127388A |
PURPOSE: To shorten working hour and enhance economic efficiency by installing a glass fiber rock bolt into a face and excavating its surrounding area and pushing back the projected bolt and continuing the excavation. CONSTITUTION: A tri...
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JPH07102015A |
PURPOSE: To produce waxes which satisfy a severe recent requirements concerning melt behavior from a solid wax feedstock more efficiently as a whole. CONSTITUTION: A solid wax feedstock is fractionated by conducting at least two fraction...
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JPH078650A |
PURPOSE: To provide an embroidery sewing machine capable of using various size embroidering frames without interence of a needle and holder with the moving embroidering frame. CONSTITUTION: A predetermined an embroidery pattern is sewn o...
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JPH0696712B2 |
PURPOSE:To improve the yield of dewaxed oil and to increase the octane number of by-produced naphtha fraction, by containing a basic nitrogen-contaiing compound to a specific zeolite catalyst before or immediately before feeding a hydroc...
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JPH0692589B2 |
A process for oil-wax separation comprises passing the oil and wax mixture or a slurry thereof with a solvent first to a filtration zone (10) and thereafter to a centrifugation zone (20). The filtration zone produces a wax cake product, ...
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JPH0692588B2 |
Relatively heavy or relatively light lube chargestocks are dewaxed in two parallel, separate reactors. The reactor used for dewaxing the relatively light chargestocks contains a crystalline aluminosilicate zeolite such as natural or synt...
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JPH0672012B2 |
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JPH0662960B2 |
A process for producing lubricant oils of low pour point and high viscosity index by partial dewaxing of a lubricant base stock by isomerization dewaxing followed by a selective dewaxing step. The isomerization dewaxing step is carried o...
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JPH0653877B2 |
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JPH0639589B2 |
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JPH0634888B2 |
PURPOSE:To enhance the safety of the titled filter and to keep the quality of the product at a high level by encasing the sliding part between a change- over valve and the end part of the drum in a case and providing a sealing member bet...
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JPH0633368B2 |
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JPH0633369B2 |
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JPH0631395B2 |
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JPH0631335B2 |
Hydrocarbon feedstocks such as distillate fuel oils and gas oils are dewaxed by isomerizing the waxy components over a zeolite beta catalyst. The process may be carried out in the presence or absence of added hydrogen. Preferred catalyst...
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JPH06116570A |
PURPOSE: To obtain a low-aromatic hydrocarbon ail, excellent in light fastness and useful as cleaning solvents, insecticides, etc., and scarcely containing aromatics by hydrotreating a petroleum distillate under specific conditions in tw...
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JPH0687764A |
PURPOSE: To distill a hydrocarbon mixture prepared by Fischer-Tropsch synthesis using a wiped film evaporator. CONSTITUTION: A hydrocarbon mixture which is prepared from a carbon monoxide and hydrogen in the presence of a cobalt catalyst...
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JPH0613713B2 |
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JPH0613717B2 |
A solvent dewaxing process is described comprising mixing a waxy hydrocarbon oil, preferably a waxy petroleum oil, most preferably a waxy lube or specialties oil, with dewaxing solvent and a dewaxing aid comprising (A) a dialkylfumarate-...
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JPH067926B2 |
Hydrocarbon lubricating oil feedstocks are dewaxed by passing the waxy feedstock over a catalyst of a mixture of medium pore zeolite and large zeolite catalysts having a Constraint Index less than 2 and having hydroisomerization activity...
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JPH0625679A |
PURPOSE: To provide an economical method for treating a charge raw material contg. dewaxing solvent and dewaxed oil. CONSTITUTION: In a sepn. of a charged mixture contg. dewaxing solvent and dewaxed oil, a residue in which the content of...
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JPH0615150A |
PURPOSE: To provide a spiral shaped member for the purpose of recovering dewaxing aids used in a dewaxing process and to improve capacity of the dewaxing process. CONSTITUTION: In a spiral shaped member made by winding a film layer, a fe...
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JPH064485B2 |
Process for the preparation of a composite crystalline aluminum silicate by maintaining an aqueous alkaline starting mixture comprising one or more silicon compounds, one or more aluminium compounds, one or more compounds of metals from ...
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