Abstract: Disclosed is a polymer containing a modified cyclic monomer unit, comprising a polymer chain represented by the following formula (I): ##STR1## wherein A to F are monomer units constituting a main chain of the polymer chain, in which monomer units A to F are arranged in any order, and l to q are, respectively, weight percentages of monomer units A to F, based on the total weight of monomer units A to F; A is selected from cyclic olefin monomer units, B is selected from cyclic conjugated diene monomer units, and C to F are monomer units copolymerizable with monomer units A and B, wherein each of S to X, which are modifying groups, is a functional group or an organic compound residue containing the functional group, with the functional group containing at least one member selected from oxygen, nitrogen, sulfur, silicon, phosphorus and halogen; and wherein s to x are, respectively, weight percentages of modifying groups S to X, based on the weight of the polymer, and wherein the polymer has a number average mole

Abstract: Disclosed is an olefin polymerization method using a highly active catalyst comprising a transition metal selected from metals of Groups IIIA including the lanthanide series, IVA, VA, VIA, VIIA and VIII of the Periodic Table of the Elements, and ligands L.sup.1 and L.sup.2 bonded thereto, wherein a combination of L.sup.1 and L.sup.2 is (1) a combination of ligand L.sup.1 which is a group containing at least one phosphorus-containing group and ligand L.sup.2 which is a ligand having a .sigma.-bond, or a ligand having a .sigma.-bond and a bond selected from at least one .pi.-bond and at least one lone electron pair donative bond; (2) a combination of ligand L.sup.1 which is a 5-membered heterocyclic pentadentate ligand having one or more heteroatoms and ligand L.sup.2 which is a ligand having a .sigma.-bond, or a ligand having a .sigma.-bond and a bond selected from at least one .pi.

Abstract: A thermally dissociative blocked polyisocyanate, wherein an isocyanate group of the polyisocyanate is protected with a thermally dissociative blocking agent, which polyisocyanate is a urethane-modified isocyanurate polyisocyanate,(1) that is obtained by a cyclic-trimerization of at least one aliphatic or alicyclic diisocyanate either after its reaction with or in the presence of a polyhydric alcohol having a valence of at least 3,(2) of which the average number of isocyanate functional groups in said polyisocyanate is in the range of 4.5 to 10, and(3) the viscosity of which measured at 25.degree. C. substantially in the absence of the aliphatic or alicyclic diisocyanate monomer and a solvent thereof is in the range of 5,000 to 100,000 mPa.multidot.s;a thermosetting hardener composition; anda thermosetting one-pack coating composition comprising the blocked polyisocyanate.

Abstract: The present invention relates to an expanded product comprising a thermoplastic fluroine type resin which does not have a cross-linking structure and has an expansion ratio of between 4-fold and 30-fold and a closed cell percentage of 40% or more. The expanded product contains at least one interface comprising layers having different cell densities and has a distribution index (Sc) and a coefficient of variation (Cv) of the maximum diameter of an open cell present at an optional cross section of each layer of 0<Sc.ltoreq.6 and 0<Cv.ltoreq.1, respectively, which are represented by the following equations:Sc=(L.sub.Max. -L.sub.Min.)/Lav. (1)Cv=SD/L.sub.av. (2)wherein L.sub.Max., L.sub.Min. and L.sub.av. represent maximum, minimum and average values of maximum diameters of open cells, respectively; and SD represents a standard deviation.

Abstract: A water-absorbent paper or nonwoven fabric containing 5-hydroxy-2-hydroxymethyl-.gamma.-pyrone for preventing the discoloration of the cut surface of lettuce stem and further containing an organic acid having from 2 to 10 carbon atoms and/or a water-retaining agent.

Abstract: Disclosed is a method for stabilizing unstable terminals of a crude oxymethylene copolymer, wherein use is made of an extruder comprising a casing having a supply inlet and an extrusion outlet which casing has at least two rotation shafts extending longitudinally through the extruder in which a melting zone, a terminal stabilization reaction zone and a volatile matter exhaustion zone are consecutively arranged from the supply inlet toward the extrusion outlet, wherein the terminal stabilization zone has a plurality of kneading elements having a thickness of from 0.1D to 0.

Abstract: A pure cultured microorganism of a Bacillus badius MA001 (FERM BP-4493) strain having deodorant and sporogenic properties. A microbial composition containing the same as the active ingredient and a method of deodorizing offensive odor sources with the composition. The order sources include fatty acids of approximately 1 to 10 carbon atoms, ammonia, indole, skatole and trimethylamine.

Abstract: Disclosed is a yeast strain belonging to Saccharomyces cerevisiae, having a freeze resistance and having an invertase activity of not less than a value corresponding to a minimum level of sucrose decomposing ability effective for utilizing sucrose for fermentation, but of not more than 200 U/g, in terms of the value of activity as measured with respect to the yeast in a state of non-freeze compressed yeast having a water content of 67% by weight and a solids content of 33% by weight. The baker's yeast of the present invention has not only freeze resistance but also high resistance to a super high sugar content dough.

Abstract: The present invention relates to a method for producing acrylonitrile comprising the steps of reacting propylene and/or propane, ammonia and molecular oxygen in the presence of a catalyst to form a reacted gas, contacting the reacted gas with a liquid containing water and an acid in a multi-stage quenching tower having three or more chambers and transferring the liquid contacted with the reacted gas in the second quenching chamber to the first quenching chamber. According to the present invention, high boiling point compounds are efficiently removed and clogging is prevented in an acrylonitrile recovery process so that the productivity of acrylonitrile is enhanced.

Abstract: Disclosed are a 2,3-dihydrobenzofuran derivative represented by formula (1) or a salt thereof, a method for producing the same, and use thereof: ##STR1## wherein R.sup.1 represents a hydrogen atom or a lower alkyl group; R.sup.2 represents a naphthyl group, a pyridyl group, a furyl group or a thienyl group; n is an integer of from 2 to 6; A represents a carbonyl group or a sulfonyl group; and * represents an asymmetric carbon atom. The 2,3-dihydrobenzofuran derivatives of the present invention and the non-toxic salts thereof have a strong affinity for serotonin 1A receptors. Therefore, are useful as pharmaceutical composition containing the 2,3-dihydrobenzofuran derivatives and the non-toxic salts thereof are especially useful for treating a serotonergic neuron-related disease, such as anxiety, depression, eating disorder, high blood pressure, emesis (including emesis induced by motion sickness, space sickness, dizziness and drug, etc.) and the like.

Abstract: The present invention provides straight-chain crystalline polyuretdione which has a structure represented by formula (1): ##STR1## wherein Y represents ##STR2## X represents ##STR3## or --NCO; R.sub.1 is R.sub.2 or ##STR4## R.sub.2 is a residual group other than diol; R.sub.3 is a residual group obtained by removing an active hydrogen from a compound having one active hydrogen; R.sub.4 is a residual group obtained by removing two NCO groups from diisocyanate; and n is 1 or more,in formula (1), Y being replaced with a triazine ring represented by ##STR5## in the range of 0 to 15%, the polyuretdione having a latent NCO group content of 12 to 21% by weight, a weight-average molecular weight of 2000 to 20000 and a melting point of 60.degree. to 140.degree. C., and being not blocked at 40.degree. C. or less. The straight-chain crystalline polyuretdione of the present invention can be used as a hardener for powder coatings and does not cause a bad smell due to a blocking agent during baking of coating.

Abstract: Disclosed is a polymer containing a cyclic olefin monomer unit, comprising a main chain represented by the formula: ##STR1## wherein A to F are monomer units constituting the main chain in which A to F are arranged in any order, and a to f are, respectively, weight percentages of A to F, based on the total weight of A to F; A to F are selected from cyclic olefin monomer units, cyclic conjugated diene monomer units, chain conjugated diene monomer units, vinyl aromatic monomer units, polar monomer units, and an ethylene monomer unit and .alpha.-olefin monomer units, respectively; and a to f satisfy the following requirements: 0.001.ltoreq.a.ltoreq.100, and 0.ltoreq.b, c, d, e, f.ltoreq.100, with the proviso that monomer unit A is present in an amount of from 0.

Abstract: Disclosed are a 2,3-dihydrobenzofuran derivative represented by formula (1) or a salt thereof, a method for producing the same, and use thereof: ##STR1## wherein R.sup.1 represents a hydrogen atom or a lower alkyl group; n is an integer of from 2 to 6; A represents a carbonyl group or a sulfonyl group; R.sup.2 represents a hydrogen atom, a halogen atom, a lower alkyl group (which is unsubstituted or substituted with at least one halogen atom), a lower alkoxy group, a hydroxyl group, a nitro group or a cyano group; and * represents an asymmetric carbon atom.A 2,3-dihydrobenzofuran derivative of the present invention or a salt thereof has a strong affinity for a serotonin 1A receptor, and, therefore, is useful for prevention and treatment of serotonergic neuron-related diseases, such as anxiety, depression, high blood pressure, emeses (including emeses induced by motion sickness, space sickness and dizziness, etc.) and the like.

Abstract: Disclosed is a cyclic conjugated diene polymer comprising a main chain represented by the formula (I): ##STR1## wherein A to E are monomer units constituting the main chain in which A to E are arranged in any order, and l to p are, respectively, weight percentages of A to E, based on the total weight of A to E; A is selected from cyclic conjugated diene monomer units, B is selected from chain conjugated diene monomer units, C is selected from vinyl aromatic monomer units, D is selected from polar monomer units, and E is selected from an ethylene monomer unit and .alpha.-olefin monomer units; and l to p satisfy the following requirements: 0.5.ltoreq.l.ltoreq.100, 0.ltoreq.

Abstract: The present invention is directed to a method for the quantitative determination of ammonia, an .alpha.-amino acid and an .alpha.-keto acid corresponding to the .alpha.-amino acid, or a chemical substance producing any one of these compounds. The present invention is also directed to an analytical composition for use in the above method. The method of the present invention ensures rapidness and accuracy in the determination of ammonia, .alpha.-amino acids or .alpha.-keto acids, even with the use of a small quantity of a biological sample. This method is very useful in application fields, such as clinical diagnosis and food testing.

Abstract: Disclosed is a crosslinking resin composition comprising: (A) a carboxyl group-containing resin as a main agent, having a number average molecular weight of from 1,000 to 40,000 and an acid value of from 10 to 400 mg KOH/g; (B) a cyclic or chain silicone compound as a curing agent, having a number average molecular weight of from 350 to 8,000 and containing at least two epoxy groups in one molecule thereof, wherein the silicone compound is free of a silanol group, a hydrolyzable silyl group and a vinyl polymer structure, and wherein the silicone compound has a siloxy group-containing skeleton; and (C) a medium. The crosslinking resin composition of the present invention not only exhibits excellent storage stability, but is also capable of providing, upon being crosslinked, a cured resin having excellent gloss, weatherability, acid resistance, solvent resistance, water repellency and stain resistance.

Abstract: Disclosed is a hollow, resin mechanical part having a shaft integrally formed therewith, comprising a hollow, integral, functional segment-shaft structure comprising at least one functional resin segment, and a resin shaft coaxially, integrally formed with the functional segment, wherein the integral segment-shaft structure satisfies the relationships defined by the following formula 0.9.ltoreq.L(b)/L(a).ltoreq.1, in which L(a) represents the entire length of the integral segment-shaft structure, and L(b) represents the length of the hollow. The mechanical part of the present invention has not only high dimensional precision and excellent material-recycling characteristics, but also can be produced with high productivity, and is very useful in various fields, such as automobiles, ordinary machinery, precision machinery and electric and electronic equipment.

Abstract: The present invention relates to a novel composite material, that is, a prepreg, obtained by bonding a film (1) comprised of an organic polymer having substantially no melting point and having a high modulus of 700 kg/mm.sup.3 or more and a high strength of 35 kg/mm.sup.2 or more and a resin layer (2) and/or fiber-reinforced layer (3), a composite molded body, and a method of manufacturing a composite molded body.The composite molded body obtained by bonding the film (1) and the resin layer (2) of the present invention has superior strength, excellent pliability, and large toughness in all directions. Further, the composite molded body obtained by bonding the film (1) and the fiber-reinforced resin layer (3) has both an extremely large impact resistance which could never be obtained with conventional molded bodies and also a strength and modulus greater than in the past. The molded body can be suitably used for aerospace equipment, sports goods, leisure goods, etc.

Abstract: A copolyester film having a planar orientation of from 0.04 to 0.15 is disclosed, wherein said copolyester has a reduced viscosity of from 0.8 dl/g to 1.6 dl/g and comprises dicarboxylic acid components including terephthalic acid as the main component, 1,4-butanediol, and diol components including at least one kind of diol represented by following formula (I), wherein when the content of the diol of the formula (I) in which m is 2 is less than 0.2 mole % based on all the acid components, the content of 1,4-butanediol is from 55 mole % to 85 mole % and the content of the diol of the formula (I) in which m is 1 is from 15 mole % to 45 mole % in 100 mole % of the total diol components excluding the diol of the formula (I) in which m is 2; and when the content of the diol of the formula (I) in which m is 2 is from 0.

Abstract: A process for producing a cyclic alcohol which comprises subjecting a cyclic olefin represented by the formula: C.sub.n H.sub.2n-2-m R.sub.m (wherein R represents a hydrogen atom, an alkyl group of 1-4 carbon atoms, a phenyl group or a cyclohexyl group, n represents an integer of 5-12, and m represents an integer of 1-4) to a catalytic hydration reaction with water in the presence of a crystalline aluminosilicate having a primary particle diameter of 0.5 .mu.m or less as a catalyst, extracting the resulting liquid of an oil phase containing a cyclic alcohol and the crystalline aluminosilicate, evaporating the liquid and feeding the vapor to a rectifying column and/or filtering the liquid and feeding the filtrate to the rectifying column, thereby to adjust the concentration of the crystalline aluminosilicate contained in the liquid in the rectifying column to 1000 ppm by weight or less, and subjecting the liquid to distillation to separate the cyclic alcohol.