Abstract: Tetrakis [3-(3,5-dibutyl-4-hydroxyphenyl)propionyloxymethyl] methane having a high purity and excellent whiteness is prepared. In this process, an ester exchange reaction between a propionic acid ester having the general formula: ##STR1## wherein Bu is an n-, sec-, iso-, or tert-butyl group and R.sup.1 is an alkyl group having 1 to 4 carbon atoms, and pentaerythritol in the presence of an alkaline catalyst is effected by adding 0.2 through 1.8 mol of water based on 1 mol of the alkaline catalyst by the substantial completion of the ester exchange reaction.

Abstract: A boring-injection device comprises a fluid supplying hollow rod, a fluid discharge portion at the lower end of the rod, and a packer element inflatable from the rod to seal a space between the rod and a borehole wall at a desired depth position. The rod is surrounded by a sheath so that the packer element and fluid discharge portion can be protruded out of and retracted within the sheath in a body. They are retracted during the boring operation and protruded during injecting or investigating operation. The device can be used for practising a method of ground improvement or a method of ground investigation.

Abstract: A film composed substantially of a polymer mixture containing a 4-methyl-1-pentene polymer, said polymer mixture comprising (A) the 4-methyl-1-pentene polymer and (B) a copolymer of propylene and an alpha-olefin, the propylene/alpha-olefin copolymer (B) containing 40 to 87 mole % of the propylene component and a heat of crystal fusion of not more than 80 joules/g, and the content of the propylene/alpha-olefin copolymer (B) being 5 to 70% by weight based on the total weight of the 4-methyl-1-pentene polymer (A) and the propylene/alpha-olefin copolymer (B).

Abstract: Stretched articles of ultrahigh-molecular-weight polyethylene are prepared by melt-kneading a mixture of ultrahigh-molecular-weight polyethylene with a paraffinic wax having a melting point of 40.degree. to 120.degree. C. and a weight average molecular weight of at least 230 but less than 2000 in a screw extruder while maintaining the temperature of the mixture at 180.degree. to 280.degree. C. The molten mixture is melt-extruded through a die at a temperature of 180.degree. to 300.degree. C. and the resulting unstretched extrudate is cooled to solidify it. The unstretched solidified extrudate is then subjected to a stretching treatment at a temperature of 60.degree. to 140.degree. C. at a particular stretch ratio. Stretch shaped articles of ultrahigh-molecular-weight polyethylene having high tensile strength and modulus of elasticity are produced uniformly and reproducibly. The stretched shaped articles are substantially free from stretching uneveness.

Abstract: The present invention relates to a process for producing 3-phenoxybenzyl 2-(4-alkoxyphenyl)-2-methylpropyl ethers having excellent insecticidal and acaricidal activities which are represented by formula (IV): ##STR1## wherein R is a lower alkyl group and X.sub.1 and X.sub.2 are each a hydrogen or fluorine atom, which comprises reacting a 3-halogeno-4-alkoxyneophyl halide represented by the formula (I): ##STR2## wherein Y.sub.1 and Y.sub.2 are each a hydrogen, chlorine or bromine atom, at least one of them being a chlorine or bromine atom, R has the same meaning as above and X is a halogen atom, with a 3-phenoxybenzyl alcohol represented by the formula (II): ##STR3## wherein X.sub.1 and X.sub.2 have the same meaning as above, in the presence of a base to obtain a 3-phenoxybenzyl 2-(4-alkoxy-3-halogenophenyl)-2-methylpropyl ether represented by the formula (III): ##STR4## wherein Y.sub.1, Y.sub.2, R, X.sub.1 and X.sub.

Abstract: A fine particulate crystalline aluminum orthophosphate is obtained by reacting an aqueous phosphoric acid solution with an aluminum oxide under heating in an organic solvent which is incompatible with water.

Abstract: Disclosed herein are a resin for high-refractivity lenses, formed by copolymerizing at least one carbonate compound represented by the general formula (I): ##STR1## wherein X is a hydrogen, chlorine or bromine atom, and R is a hydrogen atom or a methyl group with at least one unifunctional monomer represented by the general formula (II): ##STR2## wherein R' is a hydrogen atom or a methyl group and Y represents ##STR3## wherein X' is a chlorine or bromine atom, q is an integer of 0-5, and r is 0 or 1 as well as high-refractivity lenses made of such a resin.The lens-making resin according to this invention has a high refractive index, is excellent in processability such as grinding processability, thermal resistance, solvent resistance and impact resistance. Moreover, it features outstanding miscibility between the unifunctional monomer and the carbonate upon copolymerization thereof, and minimized polymerization strain.

Abstract: In preparing of silicon hydrides with use of a mixture of an alkyl aluminum hydride and a trialkyl aluminum as a reducing agent for a silicon compound, an aluminum halide compound is added to said mixture in an amount sufficient for converting at least 90 mol % of the trialkyl aluminum to a dialkyl aluminum monohalide prior to the reduction reaction. Silicon hydrides are obtained with a high yield and quality.

Abstract: Preparation of 3,3'- or 3,4'-diaminodiphenylmethane by catalytically reducing and dechlorinating, in the presence of a reduction catalyst, a dinitrobenzophenone compound having the formula ##STR1## wherein X is chlorine and attached to a position 4 or 6 on the benzene ring, and Y is hydrogen or chlorine with the proviso that when Y is hydrogen, the nitro group is attached to a position 3' or 4', and when Y is chlorine, Y is attached to a position 4' and the nitro group is attached to a position 3'.

Abstract: Disclosed herein are a novel compound, 5-methylthiopyrimidine derivative, notably that represented by the following general formula: ##STR1## wherein X means an oxygen or sulfur atom and R.sup.2 denotes a methyl, allyl or propargyl group, its preparation process and an agricultural and horticultural fungicide containing same as an active ingredient. The above compound exhibits outstanding control effects against plant diseases, especially, late blight of potatoes and the like and downly mildew. It permits preparation of an ideal agricultural and horticultural fungicide owing to its very low toxicity against mammal and fish and its no phytotoxicity.

Abstract: This automobile locking apparatus includes a one-piece, molded, plastic body having a pivotal door latch and associated ratchet pivotally mounted in a recess in one side thereof and a cooperating release lever and locking lever pivotally mounted, respectively, on a pair of integral sleeves which project from the opposite side of said body coaxially of the pivot axes of said latch and ratchet. A link which interconnects the release and locking levers, respectively, is engageable with a pin on the ratchet to prevent the locking lever to be swung into a locking position except which the release lever has been swung to a door-opening position.

Abstract: This invention relates to benzothiazepine derivatives of the general formula ##STR1## where Y is hydrogen, a CHR.sub.3 --COOR.sub.1 group, an alkanoyl group or a --COO(CH.sub.2).sub.n R.sub.4 group where R.sub.1 is hydrogen or a lower alkyl group, R.sub.3 is hydrogen, an alkyl group, an alkylphenyl group or an aryl-lower alkyl group, R.sub.4 is an aryl group and n is a whole number of 1 to 10, and to their method of preparation.The benzothiazepine derivatives of this invention, including their salts, have an inhibitory effect on the angiotensin converting enzyme and are useful as raw materials or intermediates for the synthesis of antihypertensive agents and as intermediates for the manufacture of other drugs, agricultural chemicals and industrial chemicals.

Abstract: This invention relates to benzothiazepine derivatives of the general formula ##STR1## where K is hydrogen or a --CH.sub.2 COOR.sub.2 group where R.sub.2 is hydrogen or a lower alkyl group, Z is hydrogen or phenyl except when both K and Z are hydrogen, and Y is hydrogen, a --CHR.sub.3 --COOR.sub.1 group, an alkanoyl group or a --COO(CH.sub.2).sub.n R.sub.4 group where R.sub.1 is hydrogen or a lower alkyl group, R.sub.3 is hydrogen, an alkyl group, an alkylphenyl group or an aryl-lower alkyl group, R.sub.4 is an aryl group and n is a whole number of 1 to 10, and to their methods of preparation.The benzothiazepine derivatives of this invention, including their salts, have a powerful inhibitory effect on the angiotensin converting enzyme and exert a marked depressor effect in such models of hypertension as spontaneously occurring hypertensive rats and the like, so that they are useful as drugs for the treatment of hypertension and other cardiovascular diseases.

Abstract: A continuous process for the preparation of polymer compositions having low volatile content which comprises passing a styrene polymer-containing polymerization fluid composition obtained by solution polymerization or bulk polymerization through a volatile component separator comprising vertical foaming preheaters and vacuum vessels directly connected therewith and thereby removing volatile components continuously from the polymerization fluid composition in three stages to obtain a polymer composition having low volatile content, the process being characterized in that each of three stages includes at least one vertical foaming preheater and one vacuum vessel, the first stage is carried out under such pressure and temperature conditions that the polymerization fluid composition leaving this stage contains said styrene polymer in an amount of 60 to 80% by weight and the temperature of the polymerization fluid composition passing through this stage lies between 70.degree. and 120.degree. C.

Abstract: A pumping system for oil production comprises a hydraulic unit set on the ground and adapted to send out a pressure oil, and a pump unit set in an oil well and adapted to draw up crude oil therefrom. The pump unit comprises a pump cylinder, and a plunger reciprocatingly moved in the pump cylinder. The plunger is provided with a clearance formed between the outer circumferential surface of a lower end portion thereof and the inner circumferential surface of the pump cylinder. The pressure oil supplied from the hydraulic unit is ejected from the clearance along the inner surface of the pump cylinder into a cylinder chamber.

Abstract: A composition for a liquid crystal display containing at least one nematic liquid crystalline material having dissolved therein at least one anthraquinonic dye of the formula ##STR1## wherein R is a linear or branched C.sub.7-15 alkyl group.

Abstract: A hydrocarbon resin consisting essentially of a copolymer of (A) an unsaturated chain hydrocarbon or a cyclic hydrocarbon having a vinylidene group and (B) 9,10-dihydrodicyclopentadiene or its derivative, or a hydrocarbon resin modified by addition reacting an ethylenically unsaturated carboxylic acid or its anhydride, or hydrogen, to the above-mentioned copolymer. The hydrocarbon resin and the modified hydrocarbon resin have a high softening point and a low melt viscosity, and are suitable for use in adhesives and traffic paints.

Abstract: Disclosed are 2-thiazol derivatives having the general formula ##STR1## where R.sub.1 and R.sub.2 independently represent lower alkyl radicals having 1 to 4 carbon atoms and X represents a lower alkyl radical, a lower alkoxy radical, a lower alkoxycarbonyl radical, a halogenoalkoxy radical, a radical of the formula ##STR2## or a radical of the formula ##STR3## Also disclosed are a process for preparing the derivatives and pharmaceutical compositions having immunomodulatory activity which comprise the derivatives as the active ingredient.

Abstract: A resin composition comprising a poly-1-butene polymer and at least one hindered phenol selected from the group consisting of (a) 3,5-di-tert-butyl-4-hydroxybenzoates of the following formula ##STR1## wherein R represents an alkyl group having 1 to 18 carbon atoms or an aryl group having 6 to 18 carbon atoms, (b) 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, (c) 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, (d) tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, (e) n-octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, (f) a nickel salt of a monoethyl ester of bis(3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid), (g) 2,2'-dihydroxy-3,3'-di(.alpha.

Abstract: A polymer composition comprising an ethylene-vinyl acetate-carbon monoxide copolymer and a nitrogen-containing or an alicyclic epoxy compound, and a foamable polymer composition comprising an ethylene-vinyl acetate-carbon monoxide copolymer, a heat-decomposable organic blowing agent having a decomposition temperature of at least 90.degree. C., and a nitrogen-containing or an alicyclic epoxy compound.