Abstract: This invention pertains to a water-insolubilized resin of a polymer of at least one monomer selected from N-alkyl- or N-alkylene-substituted acrylamides or methacrylamides represented by the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 mean individually a hydrogen atom or methyl group and R.sub.3 denotes a methyl, ethyl or propyl group, with the proviso that R.sub.3 is an ethyl or propyl group when R.sub.2 stands for a hydrogen atom, and that R.sub.3 is a methyl or ethyl group when R.sub.2 stands for a methyl group, or wherein R.sub.2 and R.sub.3 form --CH.sub.2).sub.4 or --CH.sub.2).sub.2 O--CH.sub.2).sub.2 in combination; or a copolymer of at least one monomer selected from the acrylamides or methacrylamides and another copolymerizable monomer. The resin has water-absorbing capacity which varies in degree depending on temperature and, when heated, undergoes shrinkage even in the presence of a large excess of water to release once-absorbed water.

Abstract: A polypropylene resin composition is provided by incorporating a metal salt of a fatty acid and the oxide or hydroxide of an alkaline earth metal, each, in an amount of 0.05-1 part by weight based on 100 parts by weight of polypropylene. The polypropylene resin composition shows excellent thermal processing stability even when subjected to remelting and extrusion molding after mixing of a scrap recycled from the production of multi-layered containers or sheets each of which is formed of a gas barrier layer made of nylon or an ethylene-vinyl alcohol copolymer and another layer made of a polypropylene resin composition.

Abstract: A melt blow die for use in a melt spinning apparatus includes a die block assembly having a chamber for receiving melt of a thermoplastic resin, at least one array of a plurality of capillary tubes arranged in a plane and having one ends held by the die block assembly, the capillary tube communicating with the chamber in the die block assembly, and gas plates connected to the die block assembly and defining therebetween gas chambers. The gas plates has lips which cooperate with each other to define a slit communicating with the gas chambers and to clamp the other ends of the array of capillary tubes in such a manner that gas orifices are formed between the peripheral surfaces of the capillary tubes and the adjacent surfaces of the lips. A gas introduced into the gas chambers is blown through the gas orifices to draw the melt of the thermoplastic resin extruded through the capillary tubes. The array of capillary tubes may be constructed as a unit which is detachably secured to the die block assembly.

Abstract: A process for the production of aromatic carboxylic acid in a continuous manner by oxidizing an alkyl aromatic compound in the liquid phase with an oxygen-containing gas in the presence of heavy metal compound(s) and/or bromine-containing compound, which process is characterized by that a part of the reaction gas delivered from the reactor and freed from the condensing components is recirculated by returning it to the reactor at a portion within the gas region. Said process permits to produce aromatic carboxylic acids of high quality, while eliminating the troubles due to foaming occurring on the liquid surface in the reactor.

Abstract: Disclosed is a polarizing film comprising a hydrophobic polymer containing a dichroic organic colorant in an oriented state which is characterized in that the dichroic organic colorant is substantially insoluble in water, organic solvents and liquid crystals and the dichroic ratio of the colorant is not less than 7 when it is measured with the film obtained by blending the colorant intimately with polyethylene terephthalate, melting the resulting blend and forming it into a film. This polarizing film has exceptionally excellent moisture resistance and thermal resistance.

Abstract: A process for the production of 2-chloropropionaldehyde from vinyl chloride, carbon monoxide and hydrogen which comprises using a rhodium compound and a trivalent organic phosphorus compound or the oxide of a trivalent organic phosphorus compound as a catalyst and carrying out the reaction under the co-existence of an acid the pka of which is in the range of 0.5-5, the oxide, hydroxide or a weak acid salt of an alkali metal or alkaline earth metal, or a buffer solution.

Abstract: An isoquinoline derivative of the following formula: ##STR1## wherein R.sub.1 is a methyl or a methoxymethyl group and R.sub.2 and R.sub.3 are each a hydrogen atom or a methyl, ethyl, methoxy, a cyclohexyl, a phenyl, a 3,4-dimethoxyphenyl, a pyridyl or an oxo (.dbd.O) group;and therapeutically acceptable salts thereof which exhibit a low toxicity and a wide range of safety and are highly useful as a cardiotonic medication.

Abstract: In the process of producing chlorine by oxidizing hydrogen chloride with molecular oxygen, activity of the catalyst can be maintained for a long period with a high conversion ratio under high space velocity of gaseous raw materials without using additives as in conventional methods, in the presence of a crystalline chromic oxide catalyst obtained by supporting relatively large amounts of chromic oxide on a silicon oxide carrier having a specified pore volume.

Abstract: A double ended ranging drum shearer is provided with a shearer body and a pair of drums disposed at front and rear end portions of the shearer body to be movable up- and down-wardly. The shearer is further equipped with detectors for respectively detecting the travelling position of the shearer body, detecting the inclination of the shearer body at the travelled position, and detecting the heights of drums at the travelled position. These detectors are operatively connected to a controlling device which is connected to a drum height adjusting device. The controlling device operates and stores the drum heights necessary for keeping constant the working height of a mining face in a pit in accordance with output signals generated from the abovementioned detectors, and the drum height adjusting device is operated in response to an output transmitted from the controlling device representing the thus operated and stored data.

Abstract: A novel low-crystalline propylene random copolymer composition comprising[I] 60 to 95% by weight of a propylene random copolymer and[II] 5 to 40% by weight of a low-crystalline propylene random copolymerwhich has excellent heat-sealability, heat-seal imparting property, transparency and antiblocking property and containing a reduced amount of a hydrocarbon-soluble component, a process for production thereof, and polypropylene composite laminated structure having improved heat-sealability and heat seal strength at low temperatures.

Abstract: Benzylamine derivatives having the general formula ##STR1## wherein R.sub.1 is an iso-propyl or tert-butyl group, R.sub.2 is a group of the formula: ##STR2## and R.sub.3 is a lower alkyl or lower alkenyl group, or its acid addition salt. These derivatives are useful for the treatment of animal epidemics or infectious diseases induced by fungi as an antimycotic agent for humans and animals, for the control of plant diseases as an agricultural fungicide, and for the control of fungi and bacteria in industrial materials or products as an industrial fungicide.

Abstract: A tubular transmission shaft for use as a drive shaft which transmits rotation from an engine to an axle of driving wheels of an automobile, including a tubular member having a smaller diameter at the middle portion thereof and larger diameter at both ends thereof and solid shaft members which are inserted and pressure tightened in both ends of the tubular member.

Abstract: A method of producing an alloy containing at least one major ingredient selected from the group consisting of iron (Fe), cobalt (Co), and Nickel (Ni) and having low contents of sulphur, oxygen, and nitrogen, comprises steps of:(a) holding a molten alloy in a container selected from the group consisting of a lime crucible, a lime crucible furnace, a converter and a ladle lined with a basic refractory consisting of 15-85% of calcium oxide (CaO), and 15-75% of magnesium oxide (MgO), wherein said alloy consists essentially of at least one major ingredient selected from the group consisting of iron (Fe), nickel (Ni), and cobalt (Co);(b) adding at least one additive, based on the molten alloy, into said molten alloy in an atmosphere selected from the group consisting of a non-oxidizing atmosphere and a vacuum, wherein said additive is selected from the group consisting of aluminum (Al), aluminum alloys, silicon and silicon alloys;(c) desulphurizing, deoxidizing and denitrifying said molten alloy under an atmosphere

Abstract: A fine particulate crosslinked amorphous copolymer comprising an amorphous copolymer having a constituent unit originating at least from ethylene and .alpha.-olefin, and having an average particle diameter of 0.2 to 50 .mu.m and a hot toluene insolubles content of 15% by weight or more.

Abstract: An insecticidal resin coating film comprising a combination of an acrylonitrile and/or methacrylonitrile copolymer resin and an insecticidal component selected from the group consisting of specified compounds exhibits an insecticidal effect, since the compound is kept on the surface of the coating film in a state capable of exhibiting its insecticidal effect for a long period of time.

Abstract: A sulfur dioxide-containing gas, for example, one obtained by an SO.sub.x and NO.sub.x removing process using ammonia is treated by the use of a reaction apparatus comprising a reducing reaction portion and a composition controlling oxidation reaction portion, provided in the same reactor or reactors adjacent to each other, to convert the composition of the gas into one suitable for the Claus reaction.

Abstract: This invention is a polyimide resin composition containing 100 parts by weight of polyimide having recurring units of the following formula: ##STR1## wherein Y is a bond, divalent hydrocarbon radical having from 1 to 10 carbons, hexafluorinated isopropylidene radical, carbonyl radical, thio radical, sulfinyl radical, sulfonyl radical or oxide, and R is a tetravalent radical of aliphatic radical having at least 2 carbons, alicyclic radical, monoaromatic radical, condensed polyaromatic radical, or noncondensed polyaromatic radical wherein aromatic radicals are mutually connected with a bond or a crosslinking function and from 5 to 100 parts by weight of fluororesin. The resin composition can provide molded products which are excellent in high-temperature stability, dimensional stability and mechanical strength and moreover have a low friction coefficient and good wear resistance. Therefore, the composition is useful as the material for electric and electronic devices, precision instrument parts etc.

Abstract: Disclosed are dihalogenothiocyanopyrimidine derivatives of the general formula ##STR1## wherein X and Y are halogen atoms, a process for preparing such derivatives, as well as agricultural and horticultural fungicidal compositions containing such a derivative as active ingredient.

Abstract: A chlorinated rubber having a chlorine content of 10 to 45% by weight based on the weight of the chlorinated rubber and a Mooney Viscosity, ML.sub.1+4 (121.degree. C.), of 10 to 190 is obtained by chlorinating an ethylene/alpha-olefin/non-conjugated diene copolymer rubber containing 5-vinyl-2-norbornene as the non-conjugated diene. The chlorinated rubber has excellent processability in roll milling, extrusion, etc.

Abstract: The present invention relates to novel aromatic alkane derivatives represented by the following general formula (I): ##STR1## wherein Ar stands for a substituted or unsubstituted phenyl or naphtyl group, R.sup.1 stands for a methyl, ethyl or isopropyl group and R.sup.2 stands for a hydrogen atom or a methyl group, or R.sup.1 and R.sup.2 together with the carbon to which they are attached jointly represent a substituted or unsubstituted cycloalkyl group, and R.sup.3 stands for a fundamental group of an alcohol which is usually used in a form of R.sup.3 OH as to natural or synthetic pyrethroids, and also to processes for the preparation of these compounds and the uses of these compounds.These compounds of the present invention have excellent insecticidal and acaricidal activities while the toxicities of these compounds are very low.