摘要:
Disclosed is a laminate excellent is surface gloss and scratch resistance, which comprises a thermoplastic elastomer layer composed mainly of a copolymer elastomer, at least one of which is partially crosslinked, and a layer of a partially neutralized ionomer resin or 1-olefin/(meth)acrylic acid copolymer resin having a free carboxyl group, both the layers being tightly bonded to each other.
摘要:
Disclosed is a thermoplastic elastomer composition excellent in the injection fusion bondability and the surface gloss, which comprises (1) an amorphous ethylene/.alpha.-olefin copolymer (a) and (2) (i) a lowly crystalline copolymer (b) of propylene with an .alpha.-olefin having at least 4 carbon atoms, (ii) a polymer (d) composed mainly of 1-butene or (iii) a combination of the copolymer (b) or the polymer (d) with a crystalline polymer (c) composed mainly of propylene, wherein the component (1) is present in an amount of 10 to 95% by weight based on the total amount of the components (1) and (2), the component (2) is present in an amount of 5 to 90% by weight based on the total amount of the components (1) and (2), and the component (1) or the components (1) and (2) are partially crosslinked.The partial crosslinking is effected by grafting of a radical-polymerizable monomer having at least two polymerizable groups.
摘要:
An ethylene-alpha-olefin-polyene random copolymer rubber comprising ethylene, an alpha-olefin having 3 to 10 carbon atoms and a polyene, wherein (A) a molar ratio of ethylene/alpha-olefin is 55/45 to 95/5, (B) the polyene is a mixture of 5-ethylidene-2-norbornene (ENB) and 5-vinyl-2-norbornene (VNB) in a molar ratio of ENB/VNB of 1/1 to 20/1, (C) an iodine value of the copolymer rubber is 2 to 40, (D) an intrinsic viscosity [.eta.] of the copolymer rubber is 1.0 to 6.0 dl/g measured in decalin at 135.degree. C., and (E) g.sub..eta. * defined by a ratio of the intrinsic viscosity [.eta.] to an intrinsic viscosity [.eta.]l of a linear ethylene-propylene random copolymer having an ethylene content of 70 mole % and the same weight-average molecular weight determined by a light-scattering method as that of the copolymer rubber is 0.2 to 0.9. Also a process for preparing this random copolymer rubber and vulcanizate derived from the same are also disclosed. This random copolymer rubber has an excellent extrudability and a fast cure rate and provides a vulcanizate having high tensile strength.
摘要:
A counter flow device for a plating apparatus including a rotary drum with its substantially half part immersed in a plating solution in a plating bath, about which a metallic strip to be plated passes in synchronism with rotation of said rotary drum and anodes spaced apart by radial gaps from the strip for causing electric current to flow between the strip and the anodes. According to the invention the counter flow device comprises a bottom nozzle arranged at a bottom of the bath and directing in a direction substantially opposite to an entering direction of the strip thereat and a top nozzle having a nozzle opening whose tip end is immersed in the proximity of a surface of the plating solution at a location where the strip leaves the plating solution, thereby ensuring uniform counter flows over entire gaps between the metallic strip and anodes to remarkably increase critical current density in plating and advantageously realize uniform plating.
摘要:
Dynamically partially cured composition comprising a peroxide-curable olefin copolymer rubber (such as EDPM) and a peroxide-decomposing olefin plastic (such as PE and PP) is improved by effecting the dynamic heat-treatment with addition of a peroxide-non-curable hydrocarbon rubber (such as PIB) and/or a mineral oil softener (process oil). The dynamic heat-treatment is preferably carried out not only in the presence of an organic peroxide but also in the presence of divinyl benzene. The elastomeric composition is thermoplastic and, with or without further blending with an olefin plastic, is processable by techniques conventionally used for thermoplastic resins. This elastomer composition and blends of the elastomer composition and olefin plastic can be used for producing foamed product in combination with decomposition type foaming agent (such as azodicarbonamide).
摘要:
There is described a pressure-responsive switch device particularly suitable for the detection of a pressure drop in a pneumatic tire on a vehicle wheel, wherein a contact carrying movable rod member is securely urged into a contact closing position by means of a conical compression spring to actuate a warning device whenever the internal pressure of the tire drops below a predetermined level. A permanent magnet may be mounted at the contact point of the switch to impart a quick motion thereto.
摘要:
To provide a viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and which attains, at a high level, the compatibility of being enhanced in viewing angle with a decrease in the darkening of images at the time of observing the screen from the front thereof. A viewing-angle-enhancing film which is set in a liquid crystal display device at a position nearer to an observer than the position of a liquid crystal layer in the device, and simultaneously satisfies the following requirements (1) to (3): (1) the film has a parallel ray transmittance of 5 to 90%; (2) the film has a diffusivity (A) of 1 to 20 degrees in its main diffusion direction; and (3) the film has a diffusivity ratio of 0.25 to 15% in the main diffusion direction.
摘要:
A copper foil reducing transmission loss at a high frequency and excellent in bond strength with a resin substrate, including at least a granular layer and a columnar layer in its thickness direction, the columnar layer being formed on at least one surface of the granular layer forming the copper foil or the granular layer being formed on at least one surface of the columnar layer forming the copper foil, the relation of the thickness A of the granular layer and the thickness B of the columnar layer in the copper foil being preferably A/(A+B)=40 to 99%, a method of production and apparatus for production for the same, and a high frequency circuit using the same.
摘要翻译:铜箔在高频下降低传输损耗,并且与树脂基板的粘合强度优异,其厚度方向至少包括粒状层和柱状层,所述柱状层形成在所述粒状层的至少一个表面上 铜箔或颗粒层形成在形成铜箔的柱状层的至少一个表面上,粒状层的厚度A与铜箔中柱状层的厚度B的关系优选为A /( A + B)= 40〜99%,制造方法及其制造装置以及使用该方法的高频电路。
摘要:
A plating bath, able to form a resistance layer with a uniform thickness distribution on the roughened surface of a conductive base, including nickel ions and sulfamic acid or its salt as essential components and at least one of phosphoric acid, phosphorous acid, hypophosphorous acid, and salts of the same; a conductive base having a thin resistance layer with a stable resistance, and a resistance circuit board material using the same.
摘要:
A copper foil reducing transmission loss at a high frequency and excellent in bond strength with a resin substrate, including at least a granular layer and a columnar layer in its thickness direction, the columnar layer being formed on at least one surface of the granular layer forming the copper foil or the granular layer being formed on at least one surface of the columnar layer forming the copper foil, the relation of the thickness A of the granular layer and the thickness B of the columnar layer in the copper foil being preferably A/(A+B)=40 to 99%, a method of production and apparatus for production for the same, and a high frequency circuit using the same.
摘要翻译:铜箔在高频下降低传输损耗,并且与树脂基板的粘合强度优异,其厚度方向至少包括粒状层和柱状层,所述柱状层形成在所述粒状层的至少一个表面上 铜箔或颗粒层形成在形成铜箔的柱状层的至少一个表面上,粒状层的厚度A与铜箔中柱状层的厚度B的关系优选为A /( A + B)= 40〜99%,制造方法及其制造装置以及使用该方法的高频电路。