Showing papers by "Mitsubishi published in 1968"

Process for the preparation of closed-cellular shaped products of olefin polymers using a mixture of a citric acid salt and a carbonate or bicarbonate as the nucleation agent

Abstract: PROCESS FOR PREPARING CLOSED-CELLULAR FOAMED ARTICLES HAVING HIGH DEGREES OF EXPANSION, OF POLYOLEFIN WHICH COMPRISES SUPPLYING POLYOLEFIN INTO AN EXTRUDER, HEATING AND MELTING THE POLYOLEFIN IN THE EXTRUDER, MIXING A PRESSURIZED FOAMING AGENT NORMALLY GASEOUS OR LIQUID WITH THE MELT, COOLING THE BLEND IN THE EXTRUDER TO TEMPERATURES OF A SPECIFIC RANGE LOWER THAN THE MELTING POINT OF THE POLYOLEFIN FIN AND EXTRUDING THE BLEND FROM THE EXTRUDER INTO A LOW PRESSURE ZONE.

Laminated biaxially oriented isotactic polypropylene and uniaxially oriented ethylene-propylene-films

Abstract: A HEAT-SEALABLE LAMINATED POLYPROPYLENE FILM COMPOSED OF A BIAXIALLY ORIENTED ISOTACTIC POLYPROPYLENE FILM AND AT LEAST ONE UNIAXIALLY ORIENTED ETHYLENE-PROPYLENE COPOLYMER FILM CONTAINING AT LEAST 75% BY WEIGHT PROPYLENE. A PROCESS FOR THE PRODUCTION OF SUCH A LAMINATED POLYPROPYLENE FILM. D R A W I N G

Method for chemically dissolving metal

Abstract: THE PRESENT INVENTION PROVIDES A NEW AND IMPROVED METHOD FOR CHEMICALLY DISOLVING METAL, ESPECIALLY, COPPER. ACCORDING TO THE INVENTION, A SOLUTION CONTAINING ACID, HYDROGEN PEROXIDE AND SATURATED LOWER ALIPHATIC ALCOHOL IS USED FOR DISOLVING METAL, EXPECIALLY COPPER. MOREOVER, IF EITHER OR BOTH OF A CATALYTIC AMOUNT OF A METAL ION, WHICH HAS LOWER OXIDATION POTENTIAL T HAN THAT OF COPPER, AND A NITROGEN COMPOUND COMPRISING A BONDING GROUP TO METAL IS ADDED TO SAID SOLUTION, THE PRESENT INVENTION IS MORE EFFECTIVELY PERFORMED.

Gas turbine assembly having low-pressure groups and high-pressure groups adapted to be selectively connected either in series or in parallel

Abstract: A gas turbine installation which includes a combustion chamber, a compressor unit supplying the combustion chamber and having a low-pressure compressor and a high-pressure compressor, a drive turbine unit driven by the combustion gases and driving the compressor unit, and an output engine driven by the combustion gases, in particular an output turbine, whereby the low-pressure compressor and high-pressure compressor are adapted to be connected either in series or in parallel.

Annular cooling device for manufacture of tubular film

Abstract: IN THE MANUFACTURE OF A FILM OF A THERMOPLASTIC RESIN ACCORDING TO AN INFLATION METHOD, THE IMPROVEMENT WHICH COMPRISES EXTRUDING A MOLTEN RESIN FROM AN ANNULAR DIE, COOLING PRELIMINARILY THUS EXTRUDED RESIN WITH A GASEOUS COOLANT TO NOT LOWER THAN THE SOFTENING POINT OF SAID RESIN, INFLATING PRELIMINARILY THUS COOLED RESIN BY AIR HAVING REDUCED PRESSURE, COOLING THUS INFLATED RESIN WITH A GASEOUS COOLANT RAPIDLY TO BELOW THE SOFTENING POINT OF SAID RESIN WHILE FURTHER INFLATING THE SAME TO A PREDETERMINED DIMENSION BY A GASEOUS MEDIUM SEALED IN THE RESULTNG TUBULAR FILM OF SAID RESIN AND FIXING THE DIMENSION OF THE RESULTING TUBULAR FILM AT THE PREDETERMINED POINT. THERE IS ALSO DISCLOSED AN ANNULAR COOLING DEVICE EMPLOYED IN THE MANUFACTURE OF THE TUBULAR FILM.

Elevator guiding device

Abstract: An elevator car is provided with supporters by which individual holders for holding guide shoes are supported in rolling contact relation for limited movement toward and away from the associated guide rails and also rotational movement respectively. A friction member resiliently engages the shoe holder to apply a controlled frictional force to it.

Control device for positioning carriages of business machines

Abstract: A control device for positioning a carriage of a business machine such as an accounting machine or a typewriter comprises means to detect the present position of the carriage, means to compare a signal produced by the detecting means with a position signal representing a predetermined carriage position a driving means driven by a command signal to drive the carriage, means driven by a command signal to fixedly locate the carriage, a braking means driven by a command signal to apply a braking force to the carriage and a control means to generate said position signal and to selectively send a control signal to respective ones of said detecting means, comparing means, driving means, locating means and braking means, to locate the carriage in a desired final position.

Coating composition for electrodeposition coating

Abstract: AQUEOUS SOLUTION FOR COATING METAL SURFACES BY ELECTRODEPOSITION WHEREIN MAIN ELEMENT IS A COPOLYMER OF AN ACRYLATE, ANOTHER ETHYLENICALLY UNSATURATED MONOMER, A DICARBOXYLIC ACID AND AN ALKOXYALKYLACRYLAMIDE. THE BEHAVIOR OF THE ACID RESIN IN WATER IS DEFINED BY PH=PKA +N LOG (X/1-X). EXCELLENT ONE-COAT SURFACE GLOSS IS ACHIEVED WHEN PAK, THE ACIDITY OF THE RESIN, IS AT LEAST 8.0, N, A PARAMETER BASED ON THE EXTENSION OF THE RESIN IN WATER, IS IN THE RANGE 0.5-1.5, AND X, THE NEUTRALIZATION DEGREE, IS 30-8/%. THE RESIN IS SELF-CROSS LINKING, BUT DURABILITY OF THE FILM IS ENHANCED WHEN AN EPOXY OR MELAMINE RESIN IS ADDED. A PIGMENT HAVING AN ACIDITY PKP WEREIN THE ABSOLUTE VALUE OF THE DIFFERENCE PKP-PKA IS AT LEAST 0.1 MAY BE INCORPORATED IN THE AQUEOUS SOLUTION.

A control system for selectively positioning an output member

Abstract: During movement of a machine table, pulses of fixed repetition frequency are counted to be converted to a phase angle which is, in turn, compared with a phase angle corresponding to the movement of the movable table until a difference between them reaches zero. The pulses are also counted by a position counter to decrease a digital value registered in it. As the counter decreases in value the table automatically switches its speed from a high to a moderate magnitude and then to a low speed when the counter clears the table stops at it command position. Also, after having reached a predetermined distance from the command position, the table can progressively decelerate in accordance with the value remaining in the counter.

Method for spreading powder and device therefor

Abstract: A method for spreading powder in which air under pressure carrying a pulverulent treating agent in the form of powder and/or granular material is forced into a soft and light tubular pipe from one end or both ends thereof and discharged or spread downwardly through a plurality of nozzles disposed spaced apart from each other longitudinally of the tubular pipe.

Apparatus for cracking hydrocarbons

Abstract: AN EXTERNAL HEATING TYPE THERMAL CRACKING APPARATUS FOR THERMALLY CRACKING HYDROCARBON COMPRISING THERMAL CRACKING TUBES HAVING FLATTENED OR COMPRESSED ROUND CROSSSECTIONAL CONFIGURATION DISPOSED IN SUCH A MANNER THAT THE MAJOR AXES OF SAID CROSS-SECTIONAL CONFIGURATIONS ARE CONFRONTING THE HEAT SOURCE.

Alumina hydrate,theta-alumina and a method for the manufacture thereof

Abstract: A PURE ALUMINA HYDRATE, HAVING UNIFORM PORES, IS MANUFACTURED FROM AN ALUMINUM SALT OF A MONOBASIC ACID AND IN THE PRESENCE OF AN ACID CARBONATE. CALCINATION OF THIS PURE ALUMINA HYDRATE PRODUCES A PURE O-ALUMINA HAVING UNIFORM PORES. THIS S 0LUMINA MAYE USED AS AN DSORBENT IN GAS CHROMATOGRAPHY.

Alternator control device having simplified charge-discharge indicator

Abstract: In an alternator driven by a prime mover of a vehicle to charge a storage battery, a gate controlled rectifier is provided to excite the field winding of the alternator and means responsive to the output voltage of the alternator is provide to effect ONOFF control of the gate controlled rectifier. To provide initial separate excitation current from the battery, a second excitation circuit including a second gate controlled rectifier is provided which is rendered inoperative as the output voltage of the alternator builds up. A lamp is directly coupled to the second excitation circuit to indicate when separate excitation current is being supplied and that the battery is not being charged.

Flame retardant fiber and process for manufacturing the same

Abstract: A FLAME RETARDANT NATURAL OR SYNTHETIC FIBER CONTAINING A COMPOUND OF THE FORMULA X1-(P(=O)(-X2)-Z)N-P(=O)(-X3)-X4 WHEREIN X1, X2, X3 AND X4 REPRESENT OH, ONH4, OCONH2, OCONHCH2OH OR OR1;R, REPRESENTS HYDROCARBON RESIDUE HAVING FROM 1 TO 18 CARBON ATOMS OR SAID HYDROCARBON RESIDUE SUBSTITUTED WITH A HALOGEN OR HYDROXY RADICAL; AT LEAST ONE MEMBER AMONG X1,X2,X3 AND X4 IS OR1 AND AT LEAST ONE MEMBER AMONG THEM IS OCONH2 OR OCONHCH2OH; Z REPRESENTS O, OR2 OR OR2O; R2 REPRESENTS ALKYLENE; AND N IS AN INTEGER FROM 0 TO 20.

Method of producing a laminated article employing extrusion and an inert gas

Abstract: A METHOD FOR PRODUCING COMPOSITE LAMINATED ARTICLES BY EXTRUDING A THIN FILM OF MELTED RESIN SUCH AS POLYETHYLENE, POLYPROPYLENE, AND THE LIKE, ONTO A BASE MATERIAL SUCH AS PAPER, METALLIC FOIL AND THE ILKE, THE MELTED RESIN BEING EXTRUDED AT ITS OXIDIZING TEMPERATURE WHEREBY THE SURFACE OPPOSITE TO THE SURFACE TO BE BONDED TO THE BASE MATERIAL OF THE EXTRUDED FILM IS COVERED BY INERT GAS WHILE THE BONDING SURFACE IS OXIDIZED BY THE AIR SUCH THAT THE NON-BONDING SURFACE IS PREVENTED FROM BEING OXIDIZED BY THE AIR. BY THIS METHOD, A LAMINATED COMPOSITE ARTICLE HAVING SUPERIOR ADHERING PROPERTIES BETWEEN THE RESIN FILM AND THE BASE AND HAVING SUPERIOR HEAT SEALING PROPERTIES, WITHOUT OFFENSIVE ODORS, IS OBTAINED. APPARATUS FOR CARRYING OUT THE ABOVE-MENTIONED METHOD WHEREIN MEANS PROVIDING AN APPARATUS FOR ISSUING INERT GAS IS PROVIDED ADJACENT TO THE MOUTH PIECE OF THE RESIN EXTRUDER.

Regeneration of cooking chemicals from spent alkaline cooking liquor

Abstract: A process for recovering useful chemicals from spent alkaline cooking liquor of high sulfide content produced in the course of wood pulp manufacture The spent cooking liquor is concentrated and the concentrate burned in a recovery furnace to produce a smelt comprising mainly Na2CO3 and Na2S Part or all of the Na2CO3 is separated from the smelt and reacted with SO2 from the recovery furnace flue gases and, if desired, SO2 from another source to produce Na2SO3 The Na2SO3 is burned in the recovery furnace with the concentrated cooking liquor where said Na2SO3 is converted to Na2S The resultant smelt has a high sulfide content and, when it is dissolved in water, an alkaline cooking liquor of high-sulfide content is regenerated

Low glare louver

Abstract: A low glare louver constructed of a grid of cells made of transparent material produces a low brightness ceiling by controlling the light from the light source. The opposite surfaces of each beam of the grid slope downwardly producing a thicker base for forming a multiprism lens or a cylindrical lens.

Effects of molding conditions on properties of injection‐molded polycarbonates

Abstract: Statistically designed experiments were carried out to study the effects of molding conditions on the properties of two types of polycarbonate, which were synthesized by the solvent process and the melt process, respectively. The properties tested in this study were classified into two groups with respect to the effect of molding conditions. One, which included birefringence, heat shrinkage at 180°C, and surface resistance to Taber abrasion, was mainly affected by stock temperature and was slightly affected by holding pressure. The other, which included resistance to solvent crack, Rockwell hardness, density, and heat shrinkage at 120°C, was affected by mold temperature and holding pressure. Mechanically isotropic moldings with a low degree of frozen orientation could be molded at a high stock temperature and at a low holding pressure, where stock temperature was more effective than holding pressure. Moldings with low residual stresses could be molded at a high mold temperature and at a low holding pressure. Essentially there was no difference in the molding conditions and properties by the method of synthesis. However, under the same molding conditions polycarbonate synthesized by the melt process gave a higher degree of frozen orientation and somewhat more rigid moldings.

Method for manufacturing acrylonitrile filaments

Abstract: AN IMPROVED METHOD FOR MANUFACTURING ACRYLONITRILE FILAMENTS CONTAINING AT LEAST 85% BY WEIGHT OF ACRYLONITRILE BY SPINNING FILAMENTS, APPLYING SECONDARY STRETCHING UPON THE PRIMARILY STRETCHED FILAMENTS WHILE HEATING, APPLYING PREHEATING UPON THE SECONDARY STRETCHED FILAMENTS AND FINALLY, APPLYING ADDITIONAL HEAT TREATMENT UPON THE FILAMENTS. THE HEATING TEMPERATURE IN ALL HEAT TREATMENTS SHOULD BE CONTROLLED TO A PREDETERMINED RELATION. THE FILAMENTS MANUFACTURED ARE PLROVIDED WITH LESS UNEVENNESS OF THICKNESS, UNIFORM DYEABILITY, EXCELLENT CONFORMITY TO DYEING, AND IMPROVED MECHANICAL PROPERTIES. SO-CALLED DRY-WET SPINNING METHOD IS PARTICULARLY FAVORABLE FOR OBTAINING THE FILAMENTS IN THE PRESENT INVENTION. D R A W I N G

Automatic stripping of electrodeposited starting sheets

Abstract: Starting sheets (copper sheets electrolytically deposited on cathode base sheets) can be readily stripped from their base sheets by pulling with suction disk when a layer of air is formed in the interface between each starting sheet and its base sheet by a simple physical process such as rolling or vibration applied to one part of the sheet. Stripping is further facilitated and the starting and base sheets are protected by the application on the base sheets before electrolysis of at least one coating agent containing an organic compound of an acid such as phosphoric acid, xanthic acid, thiocarbonic acid, or thiocarbamic acid or an organic ester such as organic phosphorous ester.

Acrylamide type soil stabilizer containing either sodium or ammonium acrylate

Abstract: A NOVEL ACRYLAMIDE TYPE SOIL STABILIZER COMPRISING (1) AN ACRYLAMIDE, (2) A WATER-SOLUBLE CROSS LINKING AGENT, (3) A MEMBER SELECTED FROMTHE GROUP CONSISTING OF SODIUM ACRYLATE AND AMMONIUM ACRYLATE IN AN AMOUNT OF LESS THAN 10% BASED ON THE ACRYLAMIDE, AND (4) AT LEAST ONE MEMBER SELECTED FORM THE GROUP CONSISTING OF SODIUM METHACRYLATE, AMMONIUM METHACRYLATE, MAGNESIUM METHACRYLATE AND 2-HYDROXYETHYL METHACRYLATE. THIS SOIL STABILIZER PROVIDES A HOMOGENEOUS AQUEOUS SOLUTION WHICH IS STABLE EVEN AT A HIGH CONCENTRATION AND HAS EXCELLENT SOIL STABILIZING EFFEC. THE SOIL STABILIZER IS APPLIED IN THE FORM OF AQUEOUS SOLUTION HAVING A CONCENTRATION OF 2-20% TOGETHER WITH A REDOX CATALYST TO SOIL TO STABILIZE THE SAME.

Method of preparing polypropylene sheet

Abstract: Method of preparing polypropylene sheets by contacting at least one surface of a molten polypropylene sheet with a quenching roller to cool the surface of the sheet to a temperature below the melting point of the polypropylene while the inner portion of the sheet is allowed to remain in the molten state, and then contacting the sheet with quenching water maintained at a temperature lower than 40* C.