Abstract: Carbon beads useful as a packing of liquid chromatography column are disclosed. The carbon beads according to the present invention has a pore volume index (10-50)/(1-50) of not less than 50%, total pore volume of not less than 0.15 ml/g, total volume of pores with radii of not less than 50 nm of not more than 0.1 ml/g, and a carbon content of not less than 97% by weight.

Abstract: An ethylene polymer which Is capable of being degraded by microorganisms is provided which comprises a recurring unit represented by the general formula ##STR1## in which R is a divalent hydrocarbon group containing 2 to 20 carbon atoms, R' is a divalent hydrocarbon group containing 1 to 20 carbon atoms and A is a polyethylene segment comprising a recurring unit represented by the formula --CH.sub.2.CH.sub.2 -- and having a number average molecular weight (Mn) of 300 to 300,000, and the ethylene polymer having a number average molecular weight (Mn) of 500 to 5,000,000.

Abstract: A thermoplastic resin composition comprising (A) 5 to 95 parts by weight of an olefinic resin and (B) 95 to 5 parts by weight of an acrylonitrile-styrenic copolymer is improved in compatibility between the olefinic resin and the acrylonitrile-styrenic copolymer by modifying at least a part of the acrylonitrile-styrenic copolymer with an epoxy compound and by incorporating an effective amount of at least one compatibilizer selected from the group consisting of styrene-ethylene-butadiene-styrene block copolymers modified with unsaturated carboxylic acids or anhydrides thereof, unsaturated carboxylic acid-olefine copolymers, and polymers reactive with an epoxy group.

Abstract: The invention concerns a lubricating oil composition in which a lubricating oil base contains 0.1% by weight to 20% by weight of an aromatic glycidyl carboxylate having the following general formula (1): ##STR1## wherein R is a C.sub.6-14 aryl or alkylaryl group, and n represents an integer of 1 or 2, and/or 0.05% by weight to 10% by weight of a phosphonate type additive having the following general formula (2): ##STR2## where R.sub.1 or R.sub.2 is selected from the group consisting of alkyl, aralkyl, aryl and hydroxyalkyl groups that may or may not have a substitute, and two R.sub.2 groups may be identical with or different from each other, and which is excellent in stability to hydrolysis, heat and oxidation as well as in lubricating properties, and so provides a particularly excellent refrigerating oil composition.

Abstract: An improved lubricating oil composition having a low coefficient of friction and reduced copper corrosion comprising (a) a lubricating oil basestock, (b) from 0.01 to 10% by weight, based on the oil composition, of at least one organomolybdenum compound selected from the group consisting of oxymolybdenum monoglyceride and oxymolybdenum diethylatoamide; and (c) from 0.5 to 7% by weight, based on the oil composition, of at least one organozinc compound selected from the group consisting of zinc dithiophosphate and zinc dithiocarbamate.

Abstract: Novel silane compound, alkoxy cyclopentyl diethoxysilane, is prepared by reacting cyclopentyl trihalosilane with ROH and then with ethanol, or by reacting cyclopentyl triethoxysilane with ROH, wherein alkyl in the alkoxy or R in ROH stands for an organic group selected from tile group consisting of isopropyl, sec-butyl, tert-buryl and tert-amyl groups. The silane compounds are useful as a catalytic component for olefin polymerization and as a silane coupling agent.

Abstract: An epoxy resin composition for forming prepregs is disclosed which includes an epoxy resin having at least two epoxy groups, a latent curing agent for the epoxy resin in an amount of 0.5-3.0 equivalents per equivalent of the epoxy groups of the epoxy resin, and a reactive, viscosity-increasing agent in an amount of 0.2-3.0 parts by weight per 100 parts by weight of the epoxy resin. The epoxy resin composition has an initial viscosity n.sub.I(50) at 50.degree. C. of 1,000-200,000 cP and an initial viscosity n.sub.I(23) at 23.degree. C. of at least 10,000 cP.

Abstract: This invention relates to a DNA sequence comprising at least part of a porcine zona pellucida PZP-4.alpha. or -4.beta. gene coding for an amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 2, respectively, in SEQUENCE LISTING.This invention also relates to an expression system and to expression of said DNA.In addition, this invention relates to an immunogenic recombinant polypeptide or peptide which comprises at least part of said amino acid sequence and which is obtained by expressing said DNA, and to a contraceptive vaccine for use in human or other animals which comprises said polypeptide or peptide as an active ingredient.

Abstract: A traction fluid lubricant is disclosed which contains a naphthenic ingredient having a weight average molecular weight of 200-300 and obtained by hydrogenating oligomers of cyclopentadiene having a ratio of the number of norbornenic double bond to that of cyclopentenic double bond of smaller than 0.9 but not smaller than 0.1. The naphthenic ingredient is suitably used in conjunction with an auxiliary ingredient selected from a polybutene having a viscosity of 5-60 cSt at 40.degree. C. and a bicyclohexyl compound.

Abstract: A composition for hydraulic, lubricating and coupling is disclosed herein, which comprises organopolysiloxane and at least one additive selected from the group consisting of an anti-wear agent which is phosphorus type or sulfur type, a metal deactivator and a corrosion inhibitor. The composition according to the present invention further comprises an antioxidant. The composition according to the present invention can be used at high temperature for a long period, without showing a significant increase in viscosity.

Abstract: A composition for hydraulic, lubricating and coupling is disclosed herein, which comprises organopolysiloxane and as an anti-wear agent at least one compound selected from those of the general formulas (I) to (IV), or an anti-wear agent of at least one compound selected from those of the general formulas (I) to (IV) together with a storage stabilizer. A composition for hydraulic, lubricating and coupling is also disclosed herein, which comprises organopolysiloxane together with a combination of two or more compounds selected from those of the general formulas (V) and (VI) as an anti-wear agent, or a combination of at least one compound selected from those of the general formulas (V) and (VI) as an anti-wear agent and a storage stabilizer. If necessary, the composition according to the present invention further comprises an antioxidant. The composition according to the present invention can be used at high temperature for a long period, without showing a significant increase in viscosity.

Abstract: Polymers of olefins such as ethylene and propylene, having functional groups introduced into both the ends thereof, can be provided which are useful as macromonomers for polycondensation. This new polymer comprises a recurring unit represented by the general formula --(--CH.sub.2.CHR--)-- and having functional groups bonded to both the ends of the polymer and a number average molecular weight of 300 to 500,000, the functional groups being selected from the group consisting of H.sub.2 C.dbd.CH-- group and ##STR1## wherein X is --OH, --OR.sup.1, a halogen atom or --SO.sub.3 R.sup.2, R.sup.1 is a hydrocarbon group of 1 to 5 carbon atoms and R.sup.2 is a halogen-substituted or non-substituted hydrocarbon group of 1 to 20 carbon atoms.

Abstract: In the fluid for viscous coupling according to the present invention, organopolysiloxane is used as base oil, and by adding phosphorus type anti-wear agent or by adding the combination of said phosphorus type anti-wear agent with antioxidant or by adding the combination of phosphorus type anti-wear agent with sulfur type anti-wear agent and/or zinc dithiophosphate type anti-wear agent or further by adding antioxidant, it is possible to increase heat-resistant property without changing the viscosity when viscous coupling is in operation and to provide the fluid for viscous coupling with few wear fragment iron quantity and with high durability.

Abstract: A reinforcing fiber sheet is provided which includes a support sheet and reinforcing fibers. The fibers are arranged in one direction on at least one surface of the support sheet and attached thereto through an adhesive layer. There is also provided a method of reinforcing a structure, which includes arranging bundles of the reinforcing fibers in one direction on at least one surface of a support sheet in parallel apart from each other or close to each other, wherein the surface of the support sheet is coated with an adhesive layer. Thereafter, pressing the bundles against the support sheet such that the reinforcing fibers are adhered through the adhesive layer to the support sheet in one direction in a slightly unfastened state to thereby produce the reinforcing fiber sheet.

Abstract: There is disclosed a process for the production of 1,4-butanediol and tetrahydrofuran by the catalytic hydrogenation in the gas phase of .gamma.-butyrolactone using a solid catalyst comprising copper and silicon, copper, chromium, and manganese or copper, chromium, manganese and barium.

Abstract: An epoxy resin composition useful as a matrix for fiber-reinforced composites is disclosed which includes a mixture containing 30-95% by weight of a tetrafunctional epoxy resin, 3-40% by weight of an admixture of trifunctional epoxy resin oligomers and 2-50% by weight of a bisphenol A epoxy resin having a number average molecular weight of 450-1,300 and such a weight average molecular weight as to provide a ratio of the weight average molecular weight to the number average molecular weight of 1.3-3.0.

Abstract: The thermoplastic resin composition of the present invention is made of:(a) 5-95 weight % of polypropylene;(b) 95-5 weight % of a polyester; and(c) 2-70 parts by weight, per 100 parts by weight of the total of (a)+(b), of a polyolefin-polyester graft copolymer.The polyolefin-polyester graft copolymer is constituted by (A) 10-90 parts by weight of a polyester having an intrinsic viscosity [.eta.] of 0.30-1.20 and an end carboxyl group content of 15-200 milliequivalent/kg; and (B) 90-10 parts by weight of a modified polyolefin having an epoxy group or carboxyl group content of 0.2-5 mol % and a weight-average molecular weight of 8,000-140,000. This thermoplastic resin composition may further contain (d) a modified polypropylene grafted with an unsaturated carboxylic acid or its anhydride.

Abstract: A thermoplastic silicon-containing polymer, which may be a precursor of SiC, and which can be transformed to a thermosetting polymer by copolymerizing it with a thermosetting perhydropolysilazane or polyborosilazane.

Abstract: An electrode for applying voltage to electroviscous fluid, particularly where the electroviscous fluid has electrically insulating fluid and porous solid particles, the ER effect can be stably maintained up to a high temperature range and high durability can be obtained by laminating an insulating layer on the surface of the electrode in contact with the electroviscous fluid.

Abstract: A yeast PPIase characterized by possessing the following properties: (1) acting on and isomerizing the bond X.sub.aa -Pro (wherein X.sub.aa stands for any amino acid and Pro stands for L-proline), (2) exhibiting a single molecular weight of about 17,000 daltons in the sodium dodecyl sulfate-polyacrylamide concentration gradient gel electrophoresis, (3) exhibiting a single isoelectric point of about 6.2 in the isoelectric focusing, and (4) inhibited by CsA;an E. coli PPIase-.beta. characterized by possessing the following properties: (1) acting on and isomerizing the bond X.sub.aa -Pro (wherein X.sub.aa stands for any amino acid and Pro for L-proline), (2) exhibiting a single molecular weight of about 20,000 daltons in the sodium dodecyl sulfate-polyacrylamide concentration gradient gel electrophoresis, (3) exhibiting a single isoelectric point of about 5.0 in the isoelectric focusing, and (4) no being inhibited by CsA;an E. coli PPIase-.alpha.