Abstract: A polypropylene resin composition capable of bringing about a non-stretched film superior in the transparency, in the impact resistance, in the low temperature heat-sealability and in the strength of heat-sealing, which composition comprises (A) a polypropylene resin, (B) a specific ethylene/&agr;-olefin random copolymer and (C) a specific propylene/ethylene/1 -butene random copolymer.
Abstract: A stretch blow bottle made from a polyester resin composition which comprises: (A) 60 to 99% by weight of a polyethylene terephthalate resin and (B) 1 to 40% by weight of a polyethylene isophthalate resin, wherein 300 square microns of a section exposed by cutting the neck of the bottle contains less than one particle of the polyethylene isophthalate resin (B) having a diameter of 0.1 micron or above in the polyethylene terephthalate resin (A) as the matrix.
Abstract: The invention is a preparation process of alkylcyclohexanol alkylene oxide adduct which contains almost no alkylphenol alkylene oxide adduct 1) in the absence of a solvent, 2) in the presence of a saturated hydrocarbon solvent, or 3) in the presence of water.
The invention can prepare alkylcyclohexanol alkylene oxide having a 200 ppm or less content of alkylphenol and alkylphenol alkylene oxide adduct. The alkylcyclohexanol alkylene oxide adduct obtained in the process of the invention has less ultraviolet absorption and fluorescence due to alkylphenol alkylene oxide adduct and is thus useful for spectrometric analysis of protein and further has excellent properties in the field of detergent and other common uses of surface active agents.
Abstract: A portable electronic presentation system is provided with a LCD display panel that is ultrathin, ultralight, and capable of freestanding operation.
Abstract: The method for recovering a titanium compound according to the invention comprises bringing a waste solution containing a titanium alkoxide into contact with a halogenating agent to convert at least apart of the titanium alkoxide to a titanium halide and then distilling the solution containing the titanium halide to recover the titanium halide from the solution, or comprises distilling a waste solution containing a titanium alkoxide and a titanium halide to recover at least a part of the titanium halide from the waste solution, bringing a residue in distiller given after the distillation into contact with a halogenating agent to convert at least a part of the titanium alkoxide to a titanium halide, and distilling the solution containing the titanium halide to recover the titanium halide from the solution. According to the method of the invention, a larger amount of a titanium compound can be recovered from a waste solution containing a titanium alkoxide.
Abstract: This invention discloses a copolymer comprising structural units represented by formulas (1) to (3):
where R1 and R3 are each hydrogen or methyl and R2 is C1-C6 straight or branched unsubstituted alkyl or C1-C6 straight or branched substituted alkyl;
wherein a, b and c are 0.05 to 0.7, 0.15 to 0.8 and 0.01 to 0.5, respectively and a+b+c=1.
Abstract: The high-durability flexible polyurethane cold cure molded foam of the invention has an overall density of not less than 35 kg/m3 and not more than 45 kg/m3 and a wet heat compression set of not more than 15%, and preferably has a hardness change ratio, as determined in a repeated compression test, of not more than 15%. This foam can be obtained by the process of the invention. The process of the invention is a process for producing a flexible polyurethane cold cure molded foam obtained from a polyol and/or a polymer polyol containing dispersed polymer microparticles obtained by radical polymerizing a compound having an unsaturated bond in the polyol, water, a catalyst and a polyisocyanate, wherein the polyol is a polyol synthesized by the use of a catalyst containing at least one compound selected from the group consisting of a compound having a nitrogen-phosphorus double bond, cesium hydroxide and rubidium hydroxide.
Abstract: According to the present invention, there are disclosed:
a process for producing an anode material for lithium secondary battery, comprising graphite particles and a crystalline carbon layer covering the whole surfaces of the graphite particles, wherein the whole surfaces of the graphite particles are covered with a carbon layer in a state that the surfaces of the graphite particles and the carbon 002 plane of the carbon layer are parallel, which process comprises subjecting graphite particles to a treatment for chemical vapor deposition in a fluidized bed type reactor at 900 to 1,200° C., using a mixed gas consisting of an organic substance gas and an inert gas, the molar concentration of the organic substance gas in the mixed gas being 2 to 50%; and
an anode material for lithium secondary battery, produced by the above process.
Abstract: The present invention provides a resin applied-copper foil, which is free of halogen elements, having high flame retardancy, excellent water resistance, heat resistance, and good peeling strength between a base material and copper foil. To provide the a resin compound used for fabricating an interlayer dielectric of a printed wiring board, the resin compound comprises an epoxy-based resin which includes: an epoxy resin curing agent having 5 to 25% by weight of nitrogen; and maleimide compounds having thermosetting properties, and the resin compound furthrt has composition which is free of halogen elements.
Abstract: The present invention provides ethylene polymers capable of preparing various molded articles such as films, sheets or the like, and having excellent moldability, particularly excellent high-speed moldability.
Abstract: Zinc alloy powder for alkaline batteries containing Bi at a rate of 0.01-0.1% by weight, In at a rate of 0.01-0.1% by weight, Mg at a rate of 0.0005-0.03 % by weight and unavoidable impurities, such as Pb, Cd and Cu, capable of improving high-rate performance and being suitable for using as a cathode active substance for alkaline batteries is provided.
Abstract: A process for preparing a polyhydroxycarboxylic acid having a weight average molecular weight of 50,000 to 1,000,000, which comprises a crystallizing step comprising (A) a step of heating pellets of a polyhydroxycarboxylic acid having a weight average molecular weight of 2,000 to 100,000 under stirring to a temperature from glass transition point or higher to a melting point or lower and heating until a defined result is attained, and (B) a step of heating the polyhydroxycarboxylic acid to a temperature of solid phase polycondensation reaction temperature, and a solid phase polycondensation reaction step of reacting the crystallized polyhydroxycarboxylic acid at an endothermic start temperature or lower of an endothermic peak as recognized upon temperature elevation analysis of the crystallized polyhydroxycarboxylic acid by using a differential scanning calorimeter.
Abstract: The present invention discloses a method for producing a taxane-type diterpene(s) by culturing cells of a taxane-type diterpene-producing plant, comprising one or both of the the following steps (a) and (b) to increase the ratio of those cell clusters suitable in size for diterpene production:
(a) at least one operation for removing large cell clusters is conducted with a sieve and/or a filter during preculture of the cells to be supplied to main culture for the production of taxane-type diterpenes or at the time of cell transfer from one preculture to the subsequent preculture;
(b) the cells are cultured under strong agitation conditions.
Abstract: A reaction layer material for a gas diffusion electrode and a production process therefor, which is obtained by mixing a polytetrafluoroethylene dispersion with a surfactant-containing aqueous solution containing hydrophilic fine particles and a hydrophobic carbon black, each dispersed therein satisfying the relationships: 0.5<D<2 and rs<2rp, wherein D=rc/rp, rs represents the average particle diameter of the hydrophilic fine particles dispersed in the surfactant-containing aqueous solution, rc represents the average particle diameter of the hydrophobic carbon black dispersed in the surfactant-containing aqueous solution, and rp represents the average particle diameter of polytetrafluoroethylene fine particles in the polytetrafluoroethylene dispersion to be used; and then adding a self-organizing agent to the mixture and mixing therewith. A jet mill is used for dispersing the hydrophobic carbon black.
Abstract: A melt processible fluoropolymer composition comprising a copolymer of tetrafluoroethylene with a perfluoro(alkyl vinyl ether), which copolymer is a mixture of a first fluorocarbon resin copolymer in which the alkyl group of the perfluoro(alkyl vinyl ether) has at least 3 carbons, and a second fluorocarbon resin copolymer in which the alkyl group of the perfluoro(alkyl vinyl ether) has 1 and/or 2 carbons, and the components of the blend are miscible in the amorphous regions and sometimes in the crystalling regions.
Type:
Grant
Filed:
January 23, 2001
Date of Patent:
July 30, 2002
Assignee:
DuPont-Mitsui Fluorochemicals Co. Ltd.
Inventors:
Jeong Chang Lee, Shosaku Kondo, Hajime Sato
Abstract: The polyethylene film of the present invention is excellent in tear resistance, impact resistance and transparency. The film of the invention is a polyethylene film suitable for packaging formed from a resin composition comprising a low-density polyethylene (A) having specific ranges of the density, melt flow rate and molecular weight distribution(Mw/Mn), and having (i) a thickness of 10 to 30 &mgr;m, (ii) Elmendorf tear strength of at least 20 kg/cm in the longitudinal direction, (iii) dart impact strength of at least 50 g, and (iv) HAZE value of not greater than 8%.
Abstract: 5-trifluoromethyl-2,4-bis(trimethylsilyloxy)pyrimidine is reacted with a 2-deoxy-&agr;-D-erythro-pentofuranosyl chloride derivative reacted in the absence or presence of a small amount of solvent to give a &bgr;-form of 1-(2′-deoxy-&bgr;-D-erythro-pentofuranosyl)-5-trifluoromethyl uracil derivative with a high selectivity.
Abstract: A gas diffusion cathode suitable for oxygen cathodes in an ion-exchange membrane type brine electrolytic bath, a gas diffusion cathode with a gas chamber and a brine electrolytic bath using it. A gas diffusion electrode is supported on a metal frame and gas diffusion electrode is joined to the metal frame via a silver member or a silver surface-carrying member. The joining portions are free from liquid or gas leakage, thereby to eliminate the need of a packing between the gas diffusion electrode and the electrolytic bath frame. At least two openings are provided in the metal frame and a gas diffusion electrode is joined by hot-pressing to each opening via a silver member or a silver surface-carrying member to provide a large gas diffusion electrode.
Abstract: The present invention provides, in the preparation of a hot press molded board from a lignocellulose or an inorganic material as a main raw material, an isocyanate-based binder composition with which a board having eternally good releasability from a hot press plate, excellent physical properties and a low hygroscopic linear expansion coefficient can be obtained with improved productivity. The binder composition comprises (A) a compound having at least two isocyanate groups, (B) a low molecular weight polyethylene and (C) water as indispensable components.