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Patent Searching and Data


Matches 601 - 650 out of 955

Document Document Title
JPH0250959B2  
JPH02263896A
PURPOSE: To improve the sunlight stability of a lubricating oil base product, by subjecting liquid products produced by the isomerization of wax to hydrorefining in the presence of a specified catalyst under mild conditions. CONSTITUTION...  
JPH0245676B2  
JPH02235991A
PURPOSE: To remove cloudiness from a dewaxed hydrocarbon oil mixture by combining a dewaxed oil mixture and a non-dewaxed oil mixture to simultaneously filter them and introducing free charge being net single polarity into the dewaxed oi...  
JPH02233516A
PURPOSE: To enable the production of composite crystalline Ga- or Fe-contg. silicate in the presence of a single org. type plate by maintaining an aq. starting material contg. Si, iron or gallium compd. and diaminoalkane under heating up...  
JPH02233112A
PURPOSE: To efficiently and completely repair a damaged region of a solvent dewaxing filter by washing this damaged region with an oil-wax solvent and drying the filter, then applying an epoxy adhesive to the damaged region and further c...  
JPH0238637B2  
JPH02191550A
PURPOSE: To selectively crack normal paraffin by forming a catalyst contg. a specified amt. of fluorine having a specified X-ray diffraction diagram and consisting of the specified amts. of zeolite, matrix and group VIII, etc. metal of t...  
JPH0224875B2  
JPH02110191A
PURPOSE: To uniformly develop a wax crystal having a proper dimension by detecting and controlling the flow rates and temperatures of an oil containing wax content, a dewaxing solvent, and a coolant. CONSTITUTION: While the flow rate of ...  
JPH0275329A
PURPOSE: To reduce the cloud point of the material by performing the operation of ultrafiltration separation at a temp. slightly above the phase transition temp. of a higher-melting component to be separated, at the time of subjecting co...  
JPH023840B2  
JPH023839B2  
JPH0214288A
PURPOSE: To efficiently obtain a dewaxed oil reduced in cloud point and pour point by continuously supplying an oil obtained by preliminarily diluting a wax-contained oil with a non-self cooled type dewaxing solvent to a vertical stage t...  
JPH028295A
PURPOSE: To efficiently provide highly pure retentate for dewaxing accelerator at a high temperature and under high pressure, by contacting stream of dewaxing oil with an ultra filtration membrane made from polyimide polymer. CONSTITUTIO...  
JPH026594A
PURPOSE: To easily adjust the ratio of anti-solvent to aromatic hydrocarbon solvent, by contacting liquid mixture used for solvent dewaxing or others with a specific non-porous film. CONSTITUTION: A non-porous film is prepared which cont...  
JPH01308491A
PURPOSE: To produce a lubricant of the subject viscosity grade from a produced isomerized object with a higher yield by subjecting a wax to an isomerization process under the specific conditions on an isomerization catalyst with a low pr...  
JPH01308492A
PURPOSE: To yield maximumly a fuel product as intermediate distillation by bringing paraffin wax in contact with hydrogen in a hydrogenation isomerization zone under the existence of a specific catalyst, and separating the obtained produ...  
JPH01301791A
PURPOSE: To obtain a lubricating base oil stock or mixture stock with high yield, by performing the isomerization of wax by using a catalyst in which Pd is supported on fluorinated alumina. CONSTITUTION: The slack wax or synthetic wax co...  
JPH01301790A
PURPOSE: To obtain a lubricating base oil or blend stock oil having low pour point and high viscosity index with high yield, by performing the isomerization in the presence of a (fluorinated) alumina catalyst of the specific physical pro...  
JPH01297494A
PURPOSE: To obtain dewaxed hydrocarbonate oil having a peculiar crystal structure having a filtering characteristic being superior in filter rate by means of a high rate by controlling whole ΔTs produced in respective solvent injecting ...  
JPH01281148A
PURPOSE: To enhance catalytic activity and selectivity by depositing a group VIII hydrogenation metal on alumina fluorided or a support contg. the alumina fluorided and having a prescribed surface area, thereby forming a wax isomerizatio...  
JPH01281147A
PURPOSE: To obtain an isomerized wax product of a high yield by depositing a hydrogenation metal on a refractory metal oxide support and halogenating the metal, then crushing the catalyst to expose the inner surfaces of the catalyst part...  
JPH0153101B2  
JPH0150356B2  
JPH01259087A
PURPOSE: To provide a lubricating base oil having a high viscosity index and a low pour point by contacting as feedstock, which contains the hydrocrackate of a wax-containing mineral oil fraction, with a catalyst under dewaxing condition...  
JPH0147520B2  
JPH01240596A
PURPOSE: To obtain a dewaxing auxiliary having low chlorine content, by adding a compound having reactivity higher than naphthalene to chlorinated paraffin after finishing large part of reaction of naphthalene with chlorinated paraffin a...  
JPH0142994B2  
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) ...  
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...  
JPH0134643B2  
JPH1144492A
To permit the temperature regulation of hot-water and improve a heat storage density by a method wherein a heat flow controlling heat transfer device is constituted by sealing evaporative liquid therein and the pressure increase of the d...  
JP01144492A
PURPOSE: To dewax a hydrocarbon material at a low catalyst aging speed by bringing the hydrocarbon in the lubricating oil boiling point range into contact with an extrusion-molded and granulated binder-free intermediate pore size zeolite...  
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...  
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...  
JPS6445713A
PURPOSE: To obtain zeolite ZK-5 which has a high silica/alumina ratio and is useful as a catalyst in selective hydrocracking of straight chain paraffin and others by heating an alkaline reaction mixture consisting of a specific compsn. c...  
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...  
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 ...  
JPS63305194A
PURPOSE: To produce a liq. paraffin capable of providing a plastic with flow property and alleviating reduction in heat and bleeding resistances, etc., by conducting hydrogenation dewaxing of roughly purified fractions of a stock oil and...  
JPS63252917A
PURPOSE: To provide an inexpensive crystalline aluminosilicate, having a specific crystal structure characterized by an X-ray diffraction pattern, a high molar ratio of SiO2/Al2O3, high degree of catalyst activity and shape selectivity a...  
JPS6349542B2  
JPS63235397A
PURPOSE: To economically dewax a low-boiling oil or a lubricating oil in a simple manner, by a catalytic dewaxing process wherein a metallosilicate catalyst prepared by a particular method is used. CONSTITUTION: Hydrodewaxing of a low-bo...  
JPS63202696A  
JPS63199289A  
JPS63161073A  
JPS63159495A  
JPS6330358B2  
JPS63135489A
PURPOSE: To perform dewaxing of lubricating oil feedstocks efficiently and at low cost, without using any polymeric filtration auxiliary, through an improvement in the filtrability of wax fraction, by adding a particular wax fraction to ...  
JPS63129014A  

Matches 601 - 650 out of 955