Abstract: (1) A graft copolymer latex obtained by the copolymerization of a rubbery diene polymer latex with an aromatic vinyl monomer and an acrylic monomer is mixed with (2) a copolymer latex having a glass transition point of -40.degree. to 10.degree. C. and a volume-average particle size of at least 0.5.mu. obtained by the copolymerization of an olefin with a vinyl ester of a fatty acid while they are maintained in the form of latex to precipitate a solid resin, whereby a thermoplastic resin composition is obtained. The total solid resin contains at least 11 wt. % of the rubbery diene polymer and at least 1 wt. % of the copolymer of olefin/vinyl ester of fatty acid.
Abstract: A PIN junction photovoltaic device using a P-type or N-type semiconductor having an optical band gap of not less than about 1.8 eV and a dark conductivity of not less than about 10.sup.-8 (.OMEGA..multidot.cm).sup.-1 at 20.degree. C. in the layer positioned on the side opposite to incidence of light. The photovoltaic device has an improved efficiency.
Abstract: A multilayer glass structure constructed by joining the edge portions of a plurality of glass sheets by a sealant through spacers having an adsorbent filled therein. According to this invention, the adsorbent comprises a combination of a granular zeolite composed of a core of a synthetic zeolite/clay binder mixture containing the synthetic zeolite in an amount larger than its average content in the granular zeolite and a shell of a synthetic zeolite/clay binder mixture containing the clay in an amount larger than its average content in the granular zeolite, with granular activated carbon having on its surface 1 to 20% by weight, based on the activated carbon, of a coating of a synthetic resin latex. The adsorbent can effectively adsorb water vapor and the vapor of an organic solvent evaporated from the sealant, and prevent dew deposition on the glass surface. Moreover, it does not yield dust even when the glass structure is handled under severe conditions.
Type:
Grant
Filed:
June 22, 1982
Date of Patent:
October 9, 1984
Assignees:
Takeda Chemical Industries, Ltd., Mizusawa Kagaku Kogyo Kabushiki Kaisha
Abstract: A method of measuring a combustible component in a liquid or gas employs a gas having a high oxygen content, instead of air or an inert gas, as the carrier gas to thereby improve drastically the scope and accuracy of measurement by a semicondutor gas sensor. The carrier gas having a high oxygen content is supplied into a combustible component sampler formed from a gas-permeable membrane and disposed in the liquid or gas to be tested so that the combustible component may be diffused into the carrier gas through the gas-permeable membrane. The carrier gas entraining the combustible component therein is introduced into a detector having a semiconductor gas sensor, in which the combustible component is detected, and its concentration is determined continuously or intermittently.
Abstract: Disclosed herein are a sorbent comprising spherical particles of activated carbon formed from a pitch and/or a synthetic, organic high polymer, to which a non-crystalline compound of zirconium has been deposited in an amount of 1 to 10% by weight (calculated as ZrO.sub.2) to the weight thereof and a process for preparing the sorbent comprising the steps of impregnating the spherical particles of activated carbon with an aqueous solution of a water-soluble compound of zirconium and after treating the thus impregnated spherical particles of activated carbon with an alkali, thermally treating the thus treated spherical particles of activated carbon at a temperature of 400.degree. to 1000.degree. C.
Abstract: A polyesteramide having structural units of the general formula: ##STR1## wherein Ar is a bivalent aromatic group comprising at least 10% by mole of a group having the following formula: ##STR2## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are the same or different and each is methyl group or ethyl group, and structural units of the general formula: ##STR3## wherein R is a bivalent organic group. At least 10% by mole of a bifunctional phenol compound to be used is a tetraalkylbisphenol-F, and whereby the obtained polyesteramide has improved hydrolysis resistance and electric characteristic with an excellent heat resistance.
Abstract: A novel method for producing a diallyl ester of an aromatic dicarboxylic acid, particularly a diallyl ester of an aromatic symmetrical dicarboxylic acid by ester-exchange of a dialkyl ester of the aromatic dicarboxylic acid with allyl alcohol in the co-presence of two kinds of catalysts is disclosed.The obtained diallyl ester of an aromatic dicarboxylic acid according to the present invention is excellent in transmissivity.
Abstract: A fruit body of Ganoderma lucidum (Fr.) Karst. having a long stipe is prepared by the method of the invention comprising the following steps;(a) cultivating a seed culture of a Ganoderma lucidum (Fr.) Karst. strain in an artificial solid medium to obtain a fungal tissue bed,(b) maintaining the fungal tissue bed at a humidity of at least 90% and an illumination intensity of at most 500 l.times. to form selectively a primordium of fruit body from the fungal tissue bed, and(c) maintaining the resulting culture at a humidity of from 40 to lower than 90% and an illumination intensity of at least 500 l.times. to form a fungal pileus of the fruit body from the primordium.
Abstract: An emulsifier useful for preparing an aqueous emulsion having a high viscosity which comprises a copolymer of (1) at least one monomer selected from a vinyl ester, vinyl alcohol, an alkyl acrylate and an alkyl methacrylate and (2) at least one monomer selected from an acrylic acid derivative of the general formula:CH.sub.2 .dbd.CR.sup.1 --CO--A--R.sup.2 --SO.sub.3 Mand a maleic acid derivative of the general formula: ##STR1## wherein R.sup.1 is hydrogen or methyl group, R.sup.2 is an alkylene group, R.sup.3 is hydrogen, an alkyl group or an alkali metal, M is hydrogen or an alkali metal, and A is --O-- or --NR-- in which R is hydrogen, an alkyl group or --R.sup.2 SO.sub.3 M. Emulsions prepared by employing the above copolymer as emulsifier have very high viscosities and moreover excellent storage, freeze-thaw and dilution stabilities.
Abstract: An apparatus and method for measuring the concentration of a gaseous or volatile substance in a liquid, which comprises passing a carrier gas through a liquid-repellent porous partition tubing, immersed in a liquid, having continuous minute channels extending through the tubing wall, introducing to a gas detector the gaseous volatile substance passing from the liquid into the carrier gas through the continuous minute channels while controlling the flow rate and the pressure of the carrier gas by simultaneously operating both a carrier gas control means and a choking means. Also disclosed is a method for the measurement of the same which is equipped with sterilization, calibration and standby function so that it may be immediately applied to an actual industrial scale process including cultivation of microorganisms, brewing and the like. Further disclosed are various measuring apparatus for the practicing of the foregoing methods.
Abstract: The dielectric film contains from 40 to 97% by volume of a thermoplastic resin, from 2 to 50% by volume of a ceramic dielectric and from 1 to 25% by volume of carbon black. The composite film contain a base film layer composed of said dielectric film and the dielectric film of the thermoplastic resin provided on at least one surface thereof.
Abstract: An ultrasonic detector is provided wherein electrodes are formed on the front and rear surfaces of a high polymer piezoelectric film, such that opposing electrode portion and nonopposing electrode portions are alternately and continually formed, most parts of the electrodes on the front and rear surfaces being opposed to each other through the piezoelectric film at the opposing electrode portions, most parts of the electrodes on the front and rear surfaces of the film which are different from the most parts of the electrodes at the opposing electrode portions being shifted from each other at the nonopposing electrode portions so as to have substantially no capacitance, and the piezoelectric film is wound around a base in an even number of layers such that the opposing electrode portions overlap each other and the nonopposing electrode portions overlap each other.
Abstract: Pipes of polypropylene reinforced with carbon fibers comprising 100 parts by weight of polypropylene, 10 to 40 parts by weight of a modified polypropylene by an organic unsaturated carboxylic acid or a copolymer of propylene and the organic unsaturated carboxylic acid and 5 to 70 parts by weight of carbon fibers of 5 to 30 micrometers in diameter and a ratio of diameter to length of 10 or more. The rate of retention of the original tensile strength of pipe in boiling water for 6 months at 100.degree. C. was higher than 95%.
Abstract: A filler for liquid chromatography, said filler consisting essentially of a hydrophilic ion-exchanger obtained by copolymerizing a mixture of (A) 5 to 90% by weight of a polymerizable monomer containing one polymerizable double bond and at least one carboxyl group per molecule and having a hydrophobic parameter of not more than 2.3, (B) 10 to 95% by weight of a crosslinkable polymerizable monomer containing at least two polymerizable double bonds per molecule and having a hydrophobic parameter of not more than 2.3, and (C) 0 to 85% by weight of a monomer being different from the monomer (A), containing one polymerizable double bond per molecule and having a hydrophobic parameter of not more than 2.3; and a method for separating a biological material such as proteins, enzymes and amino acids by liquid chromatography using the aforesaid filler.
Abstract: The air flow rate of a fan driven by a motor controlled by an adjustable speed control equipment is automatically controlled by stopping the adjustable speed control equipment in response to a fault signal therefrom during operation with an inlet vane installed upstream of the fan in fully open state, simultaneously throttling the inlet vane at a preset speed to a degree of opening appropriate for the load by means of a control circuit, and, after a period for reduction of residual voltage of the motor, changing over to operation of the fan by a commercial power supply thereby to shift to control by the degree of opening of the inlet vane.
Type:
Grant
Filed:
November 29, 1982
Date of Patent:
August 28, 1984
Assignees:
Kureha Kagaku Kogyo Kabushiki Kaisha, Fuji Electric Company Limited, Kawasaki Jukogyo Kabushiki Kaisha
Abstract: Acrylonitrile compound-styrene compound grafted polyphenylene oxides having substantially no unmodified polyphenylene ether have excellent solvent resistance and resistance to oxidation.
Abstract: The photoelectric detector contains a photosensor or light-sensing element of a pyroelectric polymer film interposed by two disturbance-preventive chambers such that the two disturbance-preventive chambers are designed so as to equalize the pressures therein to ambient pressure.The photoelectric detector undergoes no or little disturbance from the ambient atmosphere, thereby permitting an accurate detection or measurement of light or beams detected by the photosensor or light-sensing element mounted in the detector.
Abstract: Disclosed are novel high polymeric substances having saccharide side chains, suitable as a high polymeric material having several functions for medical treatments and a process for preparing thereof.
Type:
Grant
Filed:
August 5, 1981
Date of Patent:
August 14, 1984
Assignee:
Kureha Kagaku Kogyo Kabushiki Kaisha
Inventors:
Takao Kawasaki, Yoshiaki Osaka, Yukiharu Yamaguchi, Saichi Ono
Abstract: A particulate vinyl chloride polymer having excellent processability and heat stability which comprises porous vinyl chloride polymer particles and alkyl vinyl polymers which are included in the porous particles. The particulate polymer is prepared by impregnating an alkyl vinyl compound in porous particles of a vinyl chloride polymer, polymerizing it, and in the course of the polymerization of the alkyl vinyl compound, adding an alkyl methacrylate to the polymerization system and continuing the polymerization. Since the thus obtained polymer has an improved melt-flowability and heat stability, it can be blended with a large quantity of an inorganic filler and can be molded with good processability.
Abstract: A novel compound of 4-[N-(hydroxybenzyl)aminomethyl]-cyclohexane-1-carboxylic acid represented by the general formula (I): ##STR1## wherein n is an integer of 1 to 3, or a salt or an ester thereof which has specific pharmacological activities, a method for preparing the derivative and a pharmacological composition in dosage unit form comprising the derivative as an active ingredient are disclosed herein.