摘要:
A photocatalyst which has high catalytic activity, is nontoxic, has a long life, can utilize visible light as it is for photocatalytic reactions, and is useful especially for hydrogen generation; and a process for producing the same. The photocatalyst comprises cadmium sulfide, has a capsule structure, wherein platinum is supported thereto. It can be obtainable by bubbling H2S gas into a liquid to which particles of cadmium oxide have been added.
摘要翻译:具有高催化活性的光催化剂无毒,寿命长,可以像光催化反应一样利用可见光,特别适用于氢气生成; 及其制造方法。 光催化剂包括硫化镉,具有胶囊结构,其中铂被负载。 可以通过将H 2 S 2气体鼓泡到已加入氧化镉颗粒的液体中获得。
摘要:
A transparent multi-layer container comprising a co-extrudate of an oxygen-barrier resin layer and an orienting resin layer which is monoaxially or biaxially oriented is disclosed. An adhesive resin layer is preferably interposed between the oxygen-barrier layer and the orienting resin layer, and this co-extrudate is drawn and molded at a specific temperature determined relatively to the melting points and softening points of the respective resins. This container is excellent in the combination of transparency, rigidity, mechanical strength, gas-barrier property and interlaminar peel strength.
摘要:
Provided are a photocatalyst which is high in catalytic activity, is nontoxic, has a long life, allows visible light to be used directly for its photocatalytic reaction and is especially useful for hydrogen generation, and a process for producing it. It contains a cadmium compound, has a capsular structure, has an average particle diameter of 100 nm or less and can be manufactured by dropping a solution of a cadmium salt into a solution of a sodium compound or admixing a solution of a sodium compound in a suspension of particles of a cadmium compound.
摘要:
A highly functional film-coated powder which is produced without using the method based on the hydrolysis of a metal alkoxide and without using a metal alkoxide, which is an expensive compound, or a highly flammable organic solvent and which therefore can be obtained at a low overall product cost without necessitating explosion-proof facilities in the production equipment and while attaining easy temperature and humidity regulation; and a process for producing the same. The film-coated powder comprises a base particle having films on the surface thereof, wherein at least one of the films is formed by reaction of a metal salt in an aqueous solvent having a constant pH. By the technique, the surface of base particle can be evenly coated with a solid phase film while inhibiting particle aggregation without precipitating an independent solid phase in the liquid phase.
摘要:
Heat-accumulating microcapsule dispersion includes a microcapsule provided as a small-diameter heat-accumulating material including organic compound functioning as heat accumulating material in association with a phase change thereof accommodated within a microcapsule, heat transfer fluid medium including a number of the microcapsules dispersed stably therein, and a number of thermal boundary layer stirring particles dispersed in the heat transfer fluid medium. The stirring particles has a volume average particle diameter between 0.1.times.D and 1.9.times.D relative to a layer thickness D of a thermal boundary layer formed inside a heat exchanging passage through which the dispersion is caused to flow. The particles stir the thermal boundary layer in association with movement thereof inside the heat exchanging passage.
摘要:
A can end sealing rubber composition(A) consisting essentially of a styrene-butadiene rubbery copolymer, a tackifier and a filler, and(B) having (1) a creep resistance coefficient K defined by the following equation of at least 0.1 but not exceeding 0.6,K=log J.sub.90.sup.C (10)-log J.sub.90.sup.C (1) wherein J.sub.90.sup.C (10) is the creep compliance measured 10 minutes after exerting a load when a fabricated article of the composition as a specimen is compressed in water at 90.degree. C. by a parallel plate plastometer, and J.sub.90.sup.C (1) is the creep compliance measured 1 minute after exerting a load when the specimen is compressed in water at 90.degree. C. by a parallel plate plastomer,and (2) a creep compliance J.sub.25.sup.C (1) of at least 3.times.10.sup.-9 cm.sup.2 /dyne but not exceeding 1.times.10.sup.-6 cm.sup.2 /dyne, the creep compliance being measured 1 minute after exerting a load when the specimen is compressed in water at 25.degree. C. by a parallel plate plastometer.
摘要翻译:一种基本上由苯乙烯 - 丁二烯橡胶共聚物,增粘剂和填料组成的罐端密封橡胶组合物(A)和(B)具有(1)由下式定义的抗蠕变系数K至少为0.1但不超过 0.6,K = log J90C(10)-log J90C(1)其中J90C(10)是在作为样品的组合物的制品在90℃的水中压缩时施加负荷后10分钟测量的蠕变柔量。 J90C(1)是当试样在90℃的水中通过平行板塑性体压缩后施加载荷1分钟后测得的蠕变柔量,(2)蠕变顺应性J25C(1) )为至少3×10 -9 cm 2 /达因但不超过1×10 -6 cm 2 /达因,当试样在25℃的水中通过平行平板式塑性计压缩时,在施加载荷1分钟后测量蠕变柔量。
摘要:
A resinous composition excellent in processability and gas permeation resistance, which comprises (A) 30 to 98 % by weight of a crystalline polyolefin, (B) 2 to 70 % by weight of a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 25 to 75 mole % and a degree of saponification of at least 93 %, and (C) 0.5 to 15 parts by weight, per 100 parts by weight of said polyolefin and ethylene-vinyl acetate copolymer saponified product, of a thermoplastic polymer containing a carbonyl group in the main or side chain thereof, and a molded structure formed therefrom, which has a specific multi-layer structure and a high gas permeation resistance.
摘要:
A resin laminate structure comprising a layer of a polyolefin and a layer of an ethylene-vinyl acetate copolymer saponified product having an ethylene content of 25 to 50 mole % and a degree of saponification of at least 96 %, wherein a thermoplastic polymer having a carbonyl group in the main chain or side chain thereof is incorporated in at least one of said two layers in an amount of 5 to 100 parts by weight per 100 parts by weight of said polyolefin or said ethylene-vinyl acetate copolymer saponified product.
摘要:
A resin laminate structure comprising a layer of a polymer selected from the group consisting of polyolefins and saponified products of ethylene-vinyl acetate copolymers and a layer of a blend comprising (A) a polyolefin and (B) a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 25 to 50 mole % and a degree of saponification of at least 96% at an A:B mixing weight ratio ranging from 98:2 to 2:98, said two layers being laminated so that they are adjacent to each other.
摘要:
A method for producing a white powder, which includes forming on a surface of a base particle a titanium oxide film and a metallic silver film contiguously one upon another in this order, wherein the base particle includes a magnetic material, and wherein said step of forming on the surface of the base particle the titanium oxide film includes dispersing the base particle in a buffer solution and adding a titanium salt aqueous solution while agitating the dispersion.