Abstract: A copolyester which comprises, as main components, terephthalic acid as a dicarboxylic acid component and ethylene glycol as a diol component and which is characterized by:(1) isophthalic acid as a dicarboxylic acid component being from 0.5 to 3.0 mol %,(2) diethylene glycol as a diol component being from 1.0 to 2.5 mol %,(3) the intrinsic viscosity being from 0.60 to 1.50 dl/g,(4) the concentration of terminal carboxyl groups being at most 18 eq/ton, and(5) the content of a cyclic trimer being at most 0.40% by weight.

Abstract: A method for producing carbon black by means of a horizontal carbon black production furnace having a first reaction zone in which a mixture of an oxygen-containing gas and a fuel is burned to form a high temperature gas stream, a second reaction zone in which a hydrocarbon feedstock is supplied and reacted with the high temperature gas stream formed in the first reaction zone, and a third reaction zone in which quenching water is sprayed into the gas mixture from the second reaction zone to terminate the reaction, wherein the second reaction zone is constructed to have a hollow cylindrical structure with at least two cylindrical sections having different inner diameters connected to one another and the hydrocarbon feedstock is divided for supply so that it is supplied to at least two locations including an upstream cylindrical section to which the hydrocarbon feedstock is first supplied and a cylindrical section located downstream thereof and so that the flow velocities of gases passing through the respectiv

Abstract: Disclosed is a photosensitive composition comprising a diazo resin and a polymeric compound containing a structural unit represented by the following formula (I) in the molecule: ##STR1## wherein J represents a divalent linking group and n is 0 or 1. Disclosed is also a photosensitive lithographic printing using the photosensitive composition.

Abstract: Disclosed is a light-sensitive litho printing plate requiring no dampening water having a primer layer, a light-sensitive layer and a silicone rubber layer in this order on a support, characterized in that the above primer layer contains (1) an ethylenic unsaturated compound having a polymerizable unsaturated group and (2) a photopolymerization initiator, and has a tensile strength of 10 Kg/cm.sup.2 or more and a Vickers hardness of 70 or less.

Abstract: A process for producing a terbium alloy or terbium metal in which terbium(III) oxide substantially free from terbium(IV) oxide as the starting substance is subjected to electrolytic reduction in a molten salt electrolysis bath is described. According to the process of the present invention, a terbium alloy or terbium metal can be easily produced at a high yield.

Abstract: A process for producing a biphenyltetracarboxylic dianhydride which comprises the step of: heating phthalic anhydride at a temperature of from 135.degree. to 300.degree. C. in the presence of a palladium catalyst thereby to allow the phthalic anhydride to undergo a dimerization reaction. According to the process, biphenyltetracarboxylic dianhydride can be synthesized by the direct dimerization of phthalic anhydride.

Abstract: A thermal transfer recording sheet comprising a base film and an ink layer comprising at least a heat transferable colorant and a binder resin, formed on one side of the base film, wherein the binder resin is a phenoxy resin having repeating structural units of the following formula (I): ##STR1## wherein X is a bivalent group represented by ##STR2## --O--, --S--, --SO-- or --SO.sub.2 --, each of R.sup.1 and R.sup.2 is a hydrogen atom, an alkyl group or an aryl group, R.sup.3 is an alkylene group, and each of benzene rings A and B may have an alkyl group or a halogen atom as a substituent.

Abstract: A method for preparing an oxime, which comprises partitioning an aqueous hydroxylamine salt solution phase and a ketone or aldehyde phase by a cation exchange membrane, and permitting hydroxylamine in the aqueous hydroxylamine salt solution phase to diffuse and transfer through the membrane to the ketone or aldehyde phase and to form an oxime in the ketone or aldehyde phase.

Abstract: This invention provides a polycarbonate resin composition for optical use and an optical disc substrate manufactured therefrom. Polycarbonate resin is mixed with at least one kind of carboxylic acid selected from aliphatic carboxylic acids having 1 to 10 carbon atoms in which hydrogen atoms of aliphatic group may be substituted by hydroxyl groups; or aromatic carboxylic acids in which hydrogen atoms of the aromatic ring may be substituted by low alkyl groups, hydroxyl groups, or halogen atoms.The amount of the carboxylic acids is 5 to 1000 ppm based on the polycarbonate resin.

Abstract: An apparatus for controlling drive or operation of a quenching car and/or a bucket car for a coke oven and a method therefor, capable of effectively accomplishing the automatic control of the operation of the quenching car/bucket car. A quenching car/bucket car is adapted to travel on a track due to traction by a wire rope through a winch structure, to thereby reduce the load of the quenching car/bucket car applied to the track surface to prevent positional variations on the track surface. This results in the relative positional relationship of the track surface to a quenching tower, a coke wharf/CDQ and the like being ensured.

Abstract: Crosslinked copolymer particles comprising hydrophilic crosslinked copolymer particles with a hydrophobic functional group being bonded thereto via an oxygen atom derived from a hydroxyl group of said hydrophilic crosslinked copolymer, which are obtained by reacting hydrophilic crosslinked copolymer particles with a reagent for introducing a hydrophobic functional group in an organic solvent capable of swelling said hydrophilic crosslinked copolymer particles, said hydrophilic crosslinked copolymer particles being prepared by suspension polymerization of glycerol monomethacrylate and a crosslinking polyvinyl compound in the presence of an organic solvent, such as a monohydric alcohol having from 5 to 14 carbon atoms. The polymer particles are useful as a carrier for gel-filtration of hydrophilic biopolymers such as proteins and nucleic acids.

Abstract: An expandable vinyl chloride resin composition comprising, as main components, a vinyl chloride polymer composed mainly of vinyl chloride obtained by emulsion polymerization or fine suspension polymerization of a vinyl chloride monomer and a vinyl comonomer having a hydroxyl group or a carboxyl group, a plasticizer, a chemical blowing agent and a crosslinking agent, wherein said crosslinking agent is:(1) a combination of an alkylphenol-blocked polyisocyanate and an .epsilon.-caprolactam-blocked polyisocyanate, or(2) a polyisocyanate randomly blocked by an alkyl phenol and .epsilon.-caprolactam.

Abstract: The present invention relates to the peptides consisting of 25-50 amino acid residues and comprising the following peptide sequence:Leu-Met-His-Asn-Leu-Gly-Lys-Ser-Ile-Gln-Asp-Leu-Arg-Arg-Arg-Phe-Phe-Leu-His -His-Leu-Ile-Ala-Glu-Ile (I)and amides and salts thereof. The peptides have stronger inhibitory activity against hPTH when compared with conventional inhibitors, and therefore, they are expected to be useful for the treatment of various diseases associated with calcium or phosphoric acid metabolism such as hypercalcemia and osteoporosis, or diseases associated with PTH and PTHrP.

Abstract: According to the present invention, there is provided a gramineous hybrid plant produced from a rice-derived protoplast and another gramineous plant-derived protoplast. Also provided by the invention is an efficient process for preparing such a gramineous hybrid plant wherein a protoplast is prepared from a callus or suspension cell of a rice plant (Oryza sativa), another protoplast is separately prepared from a callus or suspension cell of another gramineous plant, these protoplasts are subjected to cell fusion by electric treatment, the thus fused cells are cultivated in a culture medium containing cultured rice cells as nurse cells, and the thus formed colonies are then cultivated in a culture medium containing a plant hormone such as 2,4-dichlorophenoxyacetic acid.

Abstract: A process for producing an ion exchange resin having a specific surface area of at least 0.04 m.sup.2 /g, an ion exchange resin produced by the process, and a method for removing ionic and noinionic impurities from a condensate by means of the ion exchange resin produced by the process. The process comprises the steps of: (1) uniformly imbibing a monomer mixture comprising a bifunctional unsaturated aromatic monomer and a monofunctional unsaturated aromatic monomer into aromatic crosslinked copolymer particles comprising a monofunctional unsaturated aromatic monomer and a bifunctional unsaturated aromatic monomer and having a porosity of not more than 0.2 ml/g; (2) polymerizing the monomer mixture in the presence of a polymerization initiator; and (3) introducing an ion exchange group into the resulting copolymer particles. The ion exchange resin has a large specific surface area and high physical strength and is capable of removing both ionic and noinionic impurities from a condensate.

Abstract: A thermal transfer recording sheet comprising a substrate having thereon a colorant layer, the colorant layer comprising a binder and a pyridone-type azo dyestuff represented by the following general formula (I): ##STR1## wherein R represents a hydrogen atom, an alkyl group having 2 or more carbon atoms, a substituted alkyl group, a cycloalkyl group, an allyl group, or a substituted or unsubstituted phenyl group is disclosed. A thermal transfer recording ink composition for use in forming the colorant layer on a substrate is also disclosed.

Abstract: Disclosed are antihypertensive pharmaceutical compositions and compounds which include the thiocarbamoylacetonitrile having the formula: ##STR1## wherein: R.sup.1 is selected from the group consisting of hydrogen, a C.sub.1 to C.sub.6 alkyl, a C.sub.3 to C.sub.6 cycloalkyl or --(CH.sub.2).sub.n --A (where A is selected from the group consisting of a C.sub.6 to C.sub.12 aryl, a 5- or 6-membered heterocyclic group or a fused heterocyclic group constituted by 9 or 10 atoms, each of which may be substituted by at least one substitute group selected from a C.sub.1 to C.sub.6 alkyl and a halogen and n is 0 or an integer of 1 to 6),R.sup.2 represents a C.sub.1 to C.sub.10 alkyl, and Ar represents an aryl, a 5- or 6-membered heterocyclic group or a fused heterocyclic group, each of which may be substituted by at least one substituent group selected from the group consisting of a C.sub.1 to C.sub.6 alkyl, a C.sub.1 to C.sub.6 alkoxy, a C.sub.2 to C.sub.7 alkylcarbonyl, a C.sub.7 to C.sub.

Abstract: An organic electroluminescent device having an anode, an organic hole injection transport layer, an organic luminescent layer and a cathode formed sequentially in this order, wherein the organic hole injection transport layer contains a metal complex and/or a metal salt of an aromatic carboxylic acid.

Abstract: A feed additive granule for ruminants comprising a granulated physiologically active substance as the core, a first coating layer placed on the surface of said core, said first coating layer containing a high molecular substance which dissolves or swells in water in an acidic pH region of not greater than 5.5 and is stable in a pH region of 5.6 to 8.0, and a second coating layer placed on said first coating layer, said second coating layer being of a substance which is stable in an acidic pH region of not greater than 5.5, dissolves or swells in water in a pH region of 5.6 to 8.0 and is acceptable to ruminants, and some modifications thereof, as well as feed for ruminants comprising such a novel feed additive.

Abstract: Disclosed herein is an electrostatic image-developing toner comprising particles of a toner precursor particles composed of at least a resin and a colorant, and powder of a compound represented by the following formula (I):M.sup.1 y.sub.1.M.sup.2 y.sub.2.M.sup.3 x.(OH).sub.2.Ax/n.mH.sub.2 O(I)(wherein M.sup.1 is at least one of the divalent metals selected from the group consisting of Mg, Ca, Sr and Ba; M.sup.2 is at least one of the divalent metals selected from the group consisting of Zn, Cd, Pd and Sn; M.sup.3 is a trivalent metal; A is an anion of n valency; x, yl, yz and m are the positive numbers satisfying the relations of 0<x.ltoreq.0.5, y.sub.1 +y.sub.2 =1-x and 0.ltoreq.m<2).