摘要:
The present invention provides hydrogenated β-pinene-based polymers with excellent heat resistance and light resistance, low absorptivity and high transparency, as well as molded articles thereof. The polymers of the present invention contain 50% by mass or more of β-pinene units and are hydrogenated β-pinene-based polymers where the ratio of the proton integral value at 6 to 8 ppm to the total proton integral value in a 1H-NMR spectrum is 2.3×10−5 or less or the p-phenylene group content is 0.0055% by mass or less, and the ratio of the proton integral value at 4.5 to 6 ppm to the total proton integral value is 2.8×10−4 or less or the cyclohexene-1,4-diyl group content is 0.29% by mass or less. The molded articles of the present invention contain the above hydrogenated β-pinene-based polymers.
摘要:
The present invention provides hydrogenated β-pinene-based polymers with excellent heat resistance and light resistance, low absorptivity and high transparency, as well as molded articles thereof. The polymers of the present invention contain 50% by mass or more of β-pinene units and are hydrogenated β-pinene-based polymers where the ratio of the proton integral value at 6 to 8 ppm to the total proton integral value in a 1H-NMR spectrum is 2.3×10−5 or less or the p-phenylene group content is 0.0055% by mass or less, and the ratio of the proton integral value at 4.5 to 6 ppm to the total proton integral value is 2.8×10−4 or less or the cyclohexene-1,4-diyl group content is 0.29% by mass or less. The molded articles of the present invention contain the above hydrogenated β-pinene-based polymers.
摘要:
Disclosed is a metal complex that can be used as a gas absorption material with superior gas absorbing properties, a gas storage material with a high storage capacity, and a gas separation material with superior gas separation performance and high adsorption capacity. Disclosed is a metal complex, and a manufacturing method therefor, which consists of: a polycyclic aromatic dihydroxy monocarboxylic acid compound, in the structural formula of which hydroxyl groups are at the farthest locations from each other, which has carboxyl groups at the locations adjacent to the hydroxyl groups, and which has 10 or more circularly conjugated it electrons, such as 3,7-dihydorxy-2-naphtoic acid or 4,4′-dihydroxy-3-biphenylcaroxylic acid; at least one metal selected from chromium, molybdenum, tungsten, manganese, iron, ruthenium, cobalt, rhodium, nickel, palladium, copper, zinc, and cadmium; and an organic ligand, such as 4,4′-bipyridyl, capable of bidentate bonding with said metal.
摘要:
Disclosed is a metal complex that can be used as a gas absorption material with superior gas absorbing properties, a gas storage material with a high storage capacity, and a gas separation material with superior gas separation performance and high adsorption capacity. Disclosed is a metal complex, and a manufacturing method therefor, which consists of: a polycyclic aromatic dihydroxy monocarboxylic acid compound, in the structural formula of which hydroxyl groups are at the farthest locations from each other, which has carboxyl groups at the locations adjacent to the hydroxyl groups, and which has 10 or more circularly conjugated π electrons, such as 3,7-dihydorxy-2-naphtoic acid or 4,4′-dihydroxy-3-biphenylcaroxylic acid; at least one metal selected from chromium, molybdenum, tungsten, manganese, iron, ruthenium, cobalt, rhodium, nickel, palladium, copper, zinc, and cadmium; and an organic ligand, such as 4,4′-bipyridyl, capable of bidentate bonding with said metal.
摘要:
A polymer electrolyte which comprises an ionic liquid (A) and a block copolymer (B) as essential ingredients, which block copolymer (B) comprises one or more of polymer block(s) (P) being compatible with (A) and one or more of polymer block(s) (Q) being incompatible with (A). (A) and (P) mutually dissolve each other to form one phase (X), and (Q) forms a phase (Y) being incompatible with phase (X), and phase (X) and phase (Y) are mutually micro phase separated. The polymer electrolyte of the present invention shows practical ion conductivity, is excellent in retention of ionic liquid, and moreover, is also excellent in heat resistance and mechanical strength. Furthermore, the electrochemical device and actuator element of the invention are swiftly displaced in accordance with application of a voltage, and can be actuated stably for a long period due to the liquid-retaining property and mechanical strength of the polymer electrolyte used, and, therefore, can suitably be used in the fields of medical instruments, micro-machines, industrial robot, personal robot, etc.
摘要:
A resin composition comprises a copolymer (A) comprising ethylene as a major component produced with a single-site catalyst, and an ethylene-vinyl alcohol copolymer (B) having an ethylene content of 20-60 mol. % and a degree of hydrolysis of 95% or above, the resin composition satisfying the equation (1): 1/99≦{weight of (A)}/{weight of (B)}≦
摘要翻译:树脂组合物包含含有乙烯作为主要成分的单一部位催化剂的共聚物(A)和乙烯含量为20-60摩尔的乙烯 - 乙烯醇共聚物(B)。 %和水解度为95%以上,树脂组合物满足式(1):优选的树脂组合物包含密度为0.90-0.94g / cm 3的共聚物(A)和树脂组合物 进一步包含羧酸改性聚烯烃(C)并且满足式(2)和(3):其中X = {(C)} / {(A)和(B)}的总重量的另一优选树脂 组合物包含密度为0.85-0.90g / cm 3的共聚物(A),其满足式(5):树脂组合物具有优异的熔融成型性,阻气性,抗弯曲疲劳性和耐冲击性 。 它可以用于制备多层结构以赋予结构良好的外观,耐分层性,透明性,耐冲击性和阻气性。
摘要:
Electrical connective terminals for an input use and an output use of magneto-electric conversion element and a magnet are insert molded to a synthetic resin holder. At least one part of one end face of magnet is covered by one end of the synthetic resin holder 5. At an outer face of the covering part a circuit board 6 on which the magneto-electric converter element is mounted is installed. The covering part is arranged between the magnet and thr magneto-electric converter element. Thereby a predetermined gap is assured between the magnet and the magneto-electric converter element. When a distance formed between the magnet and the rotor of magnetic material is expressed as L, a distance formed between the magnet and a magnetic sensing part of the magneto-electric converter element is expressed as L1, then L1 equals to ¼L−¾L (L1=¼L−¾L) and the distance L1 is set with a range of 1.5 mm−4.5 mm.
摘要:
In a membrane-electrode assembly for polymer electrolyte fuel cells comprising a polymer electrolyte membrane and two gas diffusion electrodes being bonded to the membrane so that the membrane can be between them, at least one catalyst layer constituting the gas diffusion electrodes characterized in that the ion-conductive binder comprises a block copolymer having a particle size of 1 μm or less comprising a polymer block (A) having ion-conductive groups and a polymer block (B) having no ion-conductive group, both polymer blocks phase separate from each other, polymer block (A) forms a continuous phase, and the contact parts of the block copolymer with catalyst particles are comprised of polymer block (A) having ion-conductive groups; a membrane-electrode assembly and a polymer electrolyte fuel cell.
摘要:
A polymer electrolyte which comprises an ionic liquid (A) and a block copolymer (B) as essential ingredients, which block copolymer (B) comprises one or more of polymer block(s) (P) being compatible with (A) and one or more of polymer block(s) (Q) being incompatible with (A). (A) and (P) mutually dissolve each other to form one phase (X), and (Q) forms a phase (Y) being incompatible with phase (X), and phase (X) and phase (Y) are mutually micro phase separated. The polymer electrolyte of the present invention shows practical ion conductivity, is excellent in retention of ionic liquid, and moreover, is also excellent in heat resistance and mechanical strength. Furthermore, the electrochemical device and actuator element of the invention are swiftly displaced in accordance with application of a voltage, and can be actuated stably for a long period due to the liquid-retaining property and mechanical strength of the polymer electrolyte used, and, therefore, can suitably be used in the fields of medical instruments, micro-machines, industrial robot, personal robot, etc.
摘要:
A membrane-electrode assembly for polymer electrolyte fuel cells comprising a polymer electrolyte membrane and two gas diffusion electrodes being bonded to the membrane so that the membrane can be between them, in which assembly each gas diffusion electrode is comprised of an electrode catalyst layer and a gas diffusion layer, intermediate layer(s) being an ion conductor is/are arranged between the electrode catalyst layer(s) and the membrane, the ion conductor mainly comprises a block copolymer comprising a polymer block (A) having ion-conductive groups and a polymer block (B) having no ion-conductive group, both blocks phase-separate from each other, (A) forms a continuous phase, and the contact part(s) of the intermediate layer(s) with the polymer electrolyte membrane and the contact part(s) of the intermediate layer(s) with the electrode catalyst layer(s) are comprised of polymer block (A) having ion-conductive groups; and a polymer electrolyte fuel cell wherein the assembly is used. By the invention, a membrane-electrode assembly and a fuel cell are provided which are economical, environment-friendly, good in moldability, and small in interface resistance and excellent in power generation efficiency.