摘要:
Disclosed is an excellent gas barrier laminate whose gas-barrier property has little dependency on temperature and which hardly causes fracture even when the laminate is stretched. A gas barrier film comprising a polymer (A) of an unsaturated carboxylic acid compound monovalent metal salt (a), wherein the polymer (A) contains a modified vinyl alcohol polymer (B); a gas barrier laminate comprising a base layer and the gas barrier film formed on at least one surface of the base layer; and a method for production of a gas barrier laminate comprising the steps of: coating a solution of an unsaturated carboxylic acid compound monovalent metal salt (a) having a polymerization degree less than 20 on at least one surface of a base layer, wherein the solution contains a modified vinyl alcohol polymer (B); performing the polymerization to form a layer of the polymer (A) of the unsaturated carboxylic acid compound monovalent metal salt (a) containing the modified vinyl alcohol polymer (B).
摘要:
Disclosed is an excellent gas barrier laminate whose gas-barrier property has little dependency on temperature and which hardly causes fracture even when the laminate is stretched. A gas barrier film comprising a polymer (A) of an unsaturated carboxylic acid compound monovalent metal salt (a), wherein the polymer (A) contains a modified vinyl alcohol polymer (B); a gas barrier laminate comprising a base layer and the gas barrier film formed on at least one surface of the base layer; and a method for production of a gas barrier laminate comprising the steps of: coating a solution of an unsaturated carboxylic acid compound monovalent metal salt (a) having a polymerization degree less than 20 on at least one surface of a base layer, wherein the solution contains a modified vinyl alcohol polymer (B); performing the polymerizaton to form a layer of the polymer (A) of the unsaturated carboxylic acid compound monovalent metal salt (a) containing the modified vinyl alcohol polymer (B).
摘要:
The invention provides a fluoroethercarboxylic acid which is represented by the general formula (I): Rf1OCHFCF2ORf2COOM (I) wherein Rf1 represents a partially or fully fluorinated alkyl group, which may optionally be interrupted with one or more oxygen atoms, Rf2 represents a partially or fully fluorinated alkylene group, which may optionally be interrupted with one or more oxygen atoms, and M represents a monovalent alkali metal, NH4 or H. The fluoroethercarboxylic acid can be suitably used as a surfactant and is low in bioaccumulation. The invention is also a method of fluoropolymer production and an aqueous fluoropolymer dispersion, using the fluoroethercarboxylic acid as a surfactant.
摘要:
A phosphazene-supported catalyst in which a support is bonded to a group represented by the general formula (1): wherein n, Zn−, a, b, c, d, R, R1 and D are all defined. The phosphazene-supported catalyst is highly effective to catalyze various organic reactions, and further has no reduction of activity even after recovery and reuse of the catalyst, thus it being economically advantageous. In addition, the polymerization of cyclic monomers, substitution of substituents, carbon-carbon bond forming reactions and the like can be conducted with extremely high efficiency.
摘要:
A ceramic heater in which a damage in a joining portion between a heating portion and a lead portion is suppressed and the reliability is excellent is provided. In a ceramic heater (1) including: a rod-shaped support (2) which is made from an insulative ceramic; and a resistor member (3) including a heating portion (31) embedded in a tip end part of the support (2), and a pair of lead portions (33) which extend from the heating portion (31) toward a rear end side of the support (2), the heating portion (31) and the lead portions (33) are made from the same conductive ceramic.
摘要:
A pattern can be precisely formed by irradiating, with an active energy beam, a positive sensitive resin composition according to this invention comprising a base polymer, an ether-bond-containing olefinic unsaturated compound and an acid-generating agent, where the base polymer is a copolymer comprising the structural units represented by formulas (1) to (3): where R1 and R3 are each independently 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.
摘要:
This invention provides a convenient process for manufacturing 1,3-dialkyl-2-imidazolidinones in a direct one-step reaction from industrially available alkylene carbonate, N-alkylethanolamine or 1,2-diol, which can minimize forming solid materials and be readily conducted in an industrial large-scale production with a higher yield and less byproducts. The process is characterized in that alkylene carbonate, N-alkylethanolamine or 1,2-diol is reacted with monoalkylamine and carbon dioxide, alkylcarbamate alkylamine salt, and/or 1,3-dialkylurea, by heating them at 50° C. or higher in a reactor whose area in contact with at least part of the reactants and/or products is made of a metal comprising titanium or zirconium and/or an oxide thereof or inorganic glass.
摘要:
The present invention discloses a hydrogenated ring-opening metathesis polymer comprising at least unit (A) of formula (1), unit (B) of formula (2) and unit (c) of formula (3): wherein a constituent molar ratio of the structural unit (A)/(B) is from 1/99 to 99/1 and a constituent molar ratio of the structural unit (B)/(C) is from 30/70 to 100/0 and, furthermore, a ratio of a weight-average molecular weight Mw to a number-average molecular weight Mn, that is Mw/Mn is from 1.0 to 2.0.
摘要:
A homogeneous alumina-based sintered material having excellent grindability, low porosity and high flexural strength, and which is free of color unevenness and fluctuations in density. Predetermined amounts of Al.sub.2 O.sub.3 powder, MgO powder, CaCO.sub.3 powder and SiO.sub.2 powder are measured out, and then mixed with stirring in a ball mill. The mixture is granulated using a spray dryer, and then hydrostatically pressed to obtain a molded product having a predetermined shape. Subsequently, the molded product is stored and sintered at a temperature of 1,550.degree. C. to 1,650.degree. C., particularly 1,600.degree. C. to 1,650.degree. C. under atmospheric pressure for 2 hours. As a result, an alumina-based sintered material having a 50 percent cumulative grain size distribution in diameter of from 4 to 15 .mu.m, a 90 percent grain diameter of two to three times the 50 percent grain diameter, and a porosity of not more than 5% can be obtained. The alumina-based sintered material thus obtained exhibits a maximum load current during grinding of not more than 1.0 A/mm, particularly not more than 0.5 A/mm, and a four-point flexural strength of not less than 300 MPa, thus providing excellent grindability as well as high strength.
摘要:
A plasma addressing display device of the present invention includes: a plasma addressing substrate; a color filter substrate; and a display medium layer interposed between the plasma addressing substrate and the color filter substrate is provided. The plasma addressing substrate includes: a first substrate; a dielectric sheet provided near the display medium layer; a plurality of electrode lines provided at regular intervals on the first substrate; a plurality of partition walls provided respectively on the plurality of electrode lines; and a plurality of strip plasma discharge channels each enclosed by the first substrate, the dielectric sheet and the partition walls. The color filter substrate includes: a second substrate; a color filter layer provided on the second substrate; a plurality of strip electrodes provided on the color filter layer so as to extend in a direction orthogonal to the plurality of strip plasma discharge channels. A picture element is defined by a region where adjacent two of the plasma discharge channels overlap one of the plurality of strip electrodes.