Abstract: A novel heat-fusible copolymer possessing a combination of excellent properties, including mechanical strength, resistivity against radioactive rays, chemical resistance, low temperature stability, thermal resistance, processabilty, adhesiveness, thermal fusible adhesive stability, and simultaneously satisfying requirements relating to low hygroscopic characteristic and stable dielectric constant. Also, a powder, film, laminated film, laminated insulating material, and article, such as electronic modules and capacitors, made from a thermoplastic polyimide resin composed mainly of the copolymer and suitable for use as electronic components and materials for electronic circuit components. The copolymer possesses a glass transition temperature of 100.degree. C. to 250.degree. C., a hygroscopic degree of 1 or less, and a dielectric rate of 3 or less, and has the following formula: ##STR1## wherein Ar.sub.1 represents a quadrivalent organic radical, Ar.sub.

Abstract: An adsorbent for removing at least one interleukin selected from the group consisting of inerleukin-1, interleukin-2, interleukin-6 and interluekin-8 and/or TNF, which comprises a porous water-insolube carrier and a compound satisfying the value of log P of at least 2.50, in which P is a distribution coefficient in an octanol-water system and being immobilized onto the carrier, a process for removing the above IL(s) and/or TNF by the adsorbent and an adsorber comprising the adsorbent. According to the present invention, IL(s) and TNF in body fluid can be efficiently absorbed using the above-mentioned adsorbent.

Abstract: A microcatheter for infusion in which a tip portion of its shaft 2 comprises a porous tubular structure 3 having no communicating pores is provided. It can be inserted into fine peripheral blood vessels along a guiding wire and/or on a blood stream, and thus a contrast medium, a curative drug, an embolismic substance or the like can be infused in the desired portion.

Abstract: A graft-modified polyolefin resin is provided, which is obtained by preparing a aqueous suspension containing (a1) 100 parts by weight of a polyolefin resin, (a2) 0.1 to 30 parts by weight of a mixture of 1 to 1000 parts by weight of an unsaturated glycidyl ester to 100 parts by weight of a compound having a glycidyl group as represented by a general formula (I): ##STR1## wherein Ar is an aromatic hydrocarbon group of C.sub.6 -C.sub.23 having at least one glycidyloxy group, and R is a hydrogen atom or a methyl group, (a3) 0.1 to 500 parts by weight of a vinyl monomer, and (a4) 0.001 to 10 parts by weight of a radical initiator to 100 parts by weight in total of (a2) and (a3), to thus impregnate (a1) with (a2) and (a3), and polymerizing (a2) and (a3) onto (a1). Resin compositions containig the graft-modified polyolefin resin have not only well-balanced mechanical properties, but excellent moldability.

Abstract: A method for producing polyolefin resins granules are disclosed, which comprises extruding by using a homodirectional (co-rotating) twin-screw kneading extruder a polyolefin resin from a die nozzle having a diameter of less than 2 mm and a discharge amount per hole of 0.5-8 Kg/hr into warm water of 5-90.degree. C. which is lower than a temperature of the resin by 140-220.degree. C., and cutting the extrudate with a cutter blade in the warm water. According to this invention, uniformly dispersed compounds are obtained, and switching of a raw resin can be done speedily and economically, and further, resin granules of a desired shape can be produced.

Abstract: The present invention relates to an adsorbent being capable of efficiently adsorbing and removing interleukins in a body fluid and to a method for adsorbing and removing, if necessary, and recovering interleukins in a body fluid with the above-mentioned adsorbent. According to the present invention, there are provided an adsorbent of interleukins which comprises a water-insoluble carrier having an anionic functional group, a method for adsorbing, removing and recovering interleukins using the same and an adsorber using the same.

Abstract: A curable composition is disclosed and comprises the following components.(A) 100 parts by weight of a oxypropylene polymer having a polymer main chain containing a repeating unit represented by the following formula ##STR1## and having at least one group containing a silicon atom bonded to a hydroxyl group and/or a hydrolyzable group and capable of crosslinking by forming a siloxane bond, wherein Mw/Mn thereof is not more than 1.6 and the number average molecular weight is at least 6,000,(B) from 1 to 200 parts by weight of a filler having a BET specific surface area of not higher than 10 m.sup.2 /g, and(C) from 0.1 to 20 parts by weight of a curing catalyst, said composition containing substantially no plasticizer.

Abstract: A substrate for controlling the growth direction of serve fibers charcterized in that a nerve cell adhesive substance is fixed in the form of a desired pattern and a process for preparing the substrate, a method for controlling the growth direction of nerve fibers and a neuronal network.According to this invention, precise control of nerve fibers' growth direction is achieved.

Abstract: A curable composition suitable as a top coat which contains a vinyl copolymer (A) having a main chain consisting of a vinyl copolymer chain, in which a reactive silyl group is combined with a carbon atom at the main chain end and/or side chain of the copolymer, the copolymer having an alcoholic hydroxyl group at its main chain end and/or side chain and having an alcoholic hydroxyl group equivalent of 400 to 2000 g/mole, a non-aqueous hydroxyl group-containing polymer dispersion (B), a silicon-containing compound and/or its partical hydrolysis condensation product (C), and a curing catalyst (D), wherein the amount of (B) is 5 to 100 parts by weight, in terms of solid matter, based on 100 parts by weight of (A), the amount of (C) is 2 to 100 parts by weight based on 100 parts by weight of (A), and the amount of (D) is 0.001 to 10 parts by weight based on 100 parts by weight of the total amount of solid matters of (A), (B) and (C), and a coated material using the same.

Abstract: There are provided a polyethylene terephthalate resin composition in which to 100 parts by weight of a polyethylene terephthalate resin (A) polymerized by use of a germanium catalyst and having at least 80% of an ethylene terephthalate repetition unit, 0.05 to 30 parts by weight of a compound selected from the group consisting of an epoxy compound having at least two intramolecular epoxy groups without any intramolecular ester linkage and a carbodiimide compound (B) is formulated, and resin compositions in which a fibrous reinforcing material (C), a block copolymer (D) and an inorganic nucleating agent (E) are further formulated in the above mentioned composition. The resin composition of the present invention is excellent in moist heat resistance, fluidity and mechanical strength, and in addition, can be subjected to high cycle molding even in a mold of a low temperature to yield a molded article with improved surface characteristics.

Abstract: The present invention provides a process for the preparation of a reactive silicon group-containing polymer. A novel process for the preparation of the polymer includes allowing an alkylene oxide to undergo ring opening polymerization with an organopolysiloxane compound having an active hydrogen-containing functional group with which the alkylene oxide is reactive as an initiator in the presence of a catalyst to synthesize a polymer of organopolysiloxane and polyoxyalkylene, and then introducing a reactive silicon group into the polymer.

Abstract: There is dsiclosed a flame retardant resin composition comprising the following components (A), (B), (C), (D), (E) and (F), wherein 1-10 parts by weight of (C), 2-10 parts by weight of (D), 0.05-2 parts by weight of (E) and 0.01-10 parts by weight of (F) are contained per 100 parts by weight of a resin whose weight ratio of (A)/(B) is 75/25-90/10.(A) a polycarbonate resin whose viscosity-average molecular weight is 16,000-29,000,(B) a polyalkylene terephthalate resin,(C) a copolymer containing a rubbery polymer and at least one selected from the group consisting of aromatic vinyl monomers, vinyl cyanide monomers, acrylic acid, acrylic esters, methacrylic acid, methacrylic esters and maleimide-type monomers as components,(D) an organic phosphorus-type flame retardant,(E) a fluorocarbon-type resin, and(F) an epoxy compound not containing halogens.

Abstract: There is provided a method for immobilizing a ligand by reacting a solvent-insoluble carrier having aldehyde group with a compound shown by the general formula: ##STR1## wherein X is --S-- or --O--, R.sup.1, R.sup.2 and R.sup.6 are the same or different, each of which is hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R.sup.3 is hydrogen atom or a substituent wherein an atom adjacent to nitrogen atom shown in the above-mentioned general formula has no unsaturated bond, R.sup.4, R.sup.5 and R.sup.7 are arbitrary substituents; provided that only one partial chemical structure of HX--C--C--NHR.sup.3 wherein X and R.sup.3 are the same as defined above or HX--C--C--C--NHR.sup.3 wherein X and R.sup.3 are the same as defined above is contained in one compound described above by which, a ligand or a compound to which a ligand is bonded can react specifically and effectively with aldehyde group in a solvent-insoluble carrier at a prescribed position to form a stable bond.

Abstract: There are disclosed a flame retardant polyethylene terephthalate resin composition comprising (A) a polyethylene terephthalate resin containing ethylene terephthalate units as a main constituent, prepared by the use of a germanium compound as a catalyst, (B) a halogen flame retardant, (C) at least one compound selected from the group consisting of epoxy compounds and carbodiimide compounds and (D) an antimony compound, and moreover, resin compositions further containing, besides those (A), (B), (C) and (D), at least one selected from the group consisting of (E) a reinforcing filler, (F) at least one inorganic compound composed of silicates and silicic acid and (G) a crystallization accelerator. The resin compositions are excellent in physical properties and wet heat resistance. By the addition of the specific inorganic compounds and the crystallization accelerators, releasability is also improved and thus high cyclization of molding is possible.

Abstract: The invention solves a problem of that sufficient adhesive intensity to satisfy recent demand for high adhesive property cannot be obtained by conventional surface treatment, and provides a method of improving adhesive property of polyimide film and achieving distinctly improved effect of adhesive property. The invention further provides novel polyimide film having improved adhesive property.

Abstract: A polyester represented by the following general formula (I) and a copolymer which comprises two structural units represented by the following general formulae (I') and (II). ##STR1## and a coating material for use in large intestine-selective drug release pharmaceutical preparations, which contains the above polyester and/or copolymer. The polyester and copolymer of the present invention contain a saccharide residue which is hydrolyzed and/or assimilated specifically in the large intestine, drugs contained in solid oral pharmaceutical administration pharmaceutical preparations coated with the coating material of the present invention are not decomposed or absorbed by digestive organs other than the large intestine, but instead are released selectively and therefore in a high concentration in the large intestine.

Abstract: A process for preparing optically active (R)-3-chloro-1,2-propanediol, which comprises subjecting (R,S)-3-chloro-1,2-propanediol to the reaction of a microorganism belonging to genus Serratia in a reaction mixture, and then collecting the residual (R)-3-chloro-1,2-propanediol. According to the process of the present invention, (R)-3-chloro-1,2-propanediol can be efficiently prepared starting from low cost (R,S)-3-chloro-1,2-propanediol.

Abstract: A novel glycerol derivative, a process for preparing the same, and a process for preparing a triazole derivative. An optically active 2-arylglycerol derivative which is novel and useful as a synthetic intermediate of medicament is provided, and furthermore, (R)-2-(2,4-difluorophenyl)-3-(1H-1,2,4-triazole-1-yl)-propane-1,2-diol, which is useful as an antifungal agent, is prepared.

Abstract: The invention provides two kinds of structures for a thin-film solar cell that is improved in the adhesive strength and reflectance of a back surface electrode layer. According to the first structure, in a thin-film solar cell in which a transparent electrode layer, a thin-film semiconductor layer, and a back surface electrode layer are laid in stated order on an insulative transparent substrate, the back surface electrode layer consists of a first transparent conductive metal compound layer having a smaller refractive index than a semiconductor that constitutes the thin-film semiconductor layer, a second transparent conductive metal compound layer, and a metal layer. The second transparent conductive metal compound layer contains at least one of components of the first transparent conductive metal compound layer and a component of the metal layer.

Abstract: Decarbamylases are provided capable of producing D-.alpha.-amino acids by hydrolysis of N-carbamyl-D-.alpha.-amino acids. A source of the decarbamylases is recombinant microorganisms produced by gene manipulation methods. Decarbamylases having improved thermostability can be obtained in which amino acids at a thermostability-related site of a natural decarbamylase have been replaced with other amino acids by mutating a DNA fragment encoding the natural decarbamylase. Recombinant DNA is obtained from a vector DNA and a DNA fragment encoding a natural decarbamylase where the nucleic acid sequence encoding an amino acid at a thermostability-related site is replaced with a nucleic acid sequence encoding another amino acid. The recombinant DNA is used to produce transformants that produce thermostable decarbamylases.