摘要:
A novel glycoprotein having (a) a molecular weight of about 60 kDa; and (b) a ratio of carbohydrate content to protein content (carbohydrate:protein) of 16.4:1.0. This glycoprotein can be prepared by: (1) extracting Tricholoma matutake with an alkali solution or hot water; (2) adsorbing the obtained extract by an anion exchange resin; (3) eluting the adsorbed fraction from the anion exchange resin with an eluent; and (4) obtaining a fraction having a molecular weight of 50 to 70 kDa by gel filtration. The above glycoprotein is useful as the active ingredient of immunopotentiators, agents for promoting recovery from loaded stress or antitumor agents.
摘要:
As a polymer composition for electrical wire coating is provided a vinylidene fluoride polymer composition, which has such heat-resistance as to withstand the heat generated from a wire in service and exhibits satisfactory flexibility even after the change with the passage of time. The polymer composition for electrical wire coating comprises a vinylidene fluoride copolymer and a vinylidene fluoride homopolymer. The preferable compounding ratio in the polymer composition is in the range of 20 to 80% by weight of a vinylidene fluoride copolymer and 80 to 20% by weight of a vinylidene fluoride homopolymer. The vinylidene fluoride copolymer is preferably one comprising 95 to 70% by weight of vinylidene fluoride and 5 to 30% by weight of a monomer copolymerizable with vinylidene fluoride.
摘要:
In a process for preparing p-dichlorobenzene by nuclear chlorination of benzene and/or chlorobenzene as the starting material with chlorine molecules, chlorination is carried out using aluminum chloride in an amount of 0.1 - 3 millimols per mol of the starting material and phenothiazines such as 10H-phenothiazine-10-carboxylic acid phenyl ester in an amount of 0.1 - 0.9 mols per mol of aluminum chloride so as to be a chlorination degree in a range of 1.2 - 2.5, by which p-dichlorobenzene can be obtained in a high para-selectivity and a short reaction time.
摘要:
In an electrode structural body, a coated film is obtained by applying an electrode mixture including an electrode active material, a first fluorine based polymer, and a solvent and drying the mixture, then formed on the surface of a current collector, the first fluorine based polymer has one or more side chains represented by the following Formula (1), and the coated film is subjected to heat treatment. €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ-X-COOH€ƒ€ƒ€ƒ€ƒ€ƒ(1) (In Formula (1), X is an atomic group having a molecular weight of less than 500, the main chain of which is made up of 1 to 20 atoms.)
摘要:
Provided are: a polyglycolic acid (PGA) solidification- and extrusion-molded article that is formed from a resin material containing PGA, the PGA having a weight average molecular weight of 100,000 to 300,000 and a melt viscosity (temperature: 270°C; shearing speed: 120 sec -1 ) of 100 to 2,000 Pa·s, and that has a tensile strength at a temperature of 150°C of 20 to 200 MPa; a downhole tool or component thereof for drilling and completion of petroleum recovery formed by machining the solidification- and extrusion-molded article; an isolation plug provided with the component; an isolation plug mandrel; and a method for manufacturing the PGA solidification- and extrusion-molded article and a method for manufacturing the downhole tool or component thereof that comprise the steps of: supplying the resin material to an extruder (preferably from a fixed-quantity feeder); and after solidification- and extrusion-molding, pressurizing the solidification- and extrusion-molded article, and drawing the same while applying back pressure thereto in a direction of a forming die to suppress the expansion of the solidified and extruded matter.