摘要:
A pneumatic tire comprising a skin layer which is formed by curing a polyurethane resin composition comprising a compound having active hydrogen atoms and an organic polyisocyanate compound, has an oxygen permeation coefficient at 23° C. under a relative humidity of 60% of 2.0 ml·mm/m2·day·MPa or smaller and comprises 20% by weight or more of a skeleton structure represented by formula (1) is provided. Since the tire has the skin layer formed with the polyurethane resin composition and having an excellent barrier property to gases, the weight of the tire can be decreased, durability can be improved and quiet driving can be achieved while the internal pressure is retained even when the gas filling the tire is the air, and the tire is more economical than tires filled with nitrogen gas. Unlike other tires using other materials having the barrier property to gases to decrease the weight, no adhesives are necessary for disposing the skin layer. Thus, the process can be simplified and the cost can be reduced in the production
摘要翻译:包含通过固化包含具有活性氢原子的化合物的聚氨酯树脂组合物和有机多异氰酸酯化合物形成的表皮层的充气轮胎在相对湿度为60%的2.0ml的条件下具有23℃的透氧系数。 mm / m 2·day.MPa以下,由式(1)表示的骨架结构体含有20重量%以上。 由于轮胎具有由聚氨酯树脂组合物形成并具有优异的气体隔离性的表皮层,所以即使在内部压力保持时也能够减轻轮胎的重量,提高耐久性,并能够保持静音, 填充轮胎的气体是空气,轮胎比装有氮气的轮胎更经济。 与使用具有气体阻隔性的其他材料以减轻重量的其它轮胎不同,不需要粘合剂来设置表皮层。 因此,可以简化该过程,并且可以在生产中降低成本
摘要:
A polyisocyanate prepolymer with isocyanate group on terminal obtainable by reaction of (A) polyoxyalkylenepolyol, (B) polyhydric alcohol having a molecular weight of 90 to 250 and the number of hydroxyl group of 2 to 3 with branched alkyl group and/or cyclohexane ring and (C) organic polyisocyanate composed of bis(isocyanatemethyl)cyclohexane, wherein NCO group content in the polyisocyanate prepolymer is 8% by weight or above and urethane group content in the polyisocyanate prepolymer is 8% by weight or above and sum total of NCO group content and urethane group content is 16 to 30% by weight and a concentration of unreacted (C) organic polyisocyanate remained in the polyisocyanate prepolymer is 1% by weight or below.
摘要:
Provided is a gas-barriering coated film obtained by coating a gas barriering layer on at least one face of a flexible film or an inorganic-deposited polymer film, wherein the above gas-barriering layer is a polyurethane resin-cured material formed from a composition comprising an active hydrogen-containing compound (A) and an organic polyisocyanate compound (B), and 20% by weight or more of a skeletal structure represented by Formula (1) is contained in the above resin-cured material. The gas-barriering coated film of the present invention is excellent in various performances such as a layer-to-layer adhesive property, a gas barriering property at a high humidity, a bending resistance and a retort treating resistance in addition to a high gas barriering property, and therefore it is applied to various uses including packing materials for food and medicines to which a high gas barriering property is required.
摘要:
A polyisocyanate compound obtained by highly converting a bis(isocyanatomethyl)cyclohexane into a uretidione compound, a process for producing the compound, a polyisocyanate polyaddition composition obtained by polyaddition of the compound, a compound having at least two hydroxyl groups and a compound having one hydroxyl group, and a powder coating material using the composition as the curing agent. The powder coating material is advantageous for safety and health due to the absence of dissociation of blocking agents and for economy due to a content of latent NCO greater than conventional uretidione-based powder coating materials. When a curing agent obtained from the polyisocyanate compound is used in combination with a polyester polyol having 30% or greater of hydroxyl group bonded to secondary carbon atom in the entire hydroxyl group, the curing temperature is lowered and the coating film exhibits excellent gloss like solvent-based coating materials, smoothness of the surface, weatherability and mechanical properties.
摘要:
A polyisocyanate compound obtained by highly converting a bis(isocyanatomethyl)cyclohexane into a uretidione compound, a process for producing the compound, a polyisocyanate polyaddition composition obtained by polyaddition of the compound, a compound having at least two hydroxyl groups and a compound having one hydroxyl group, and a powder coating material using the composition as the curing agent. The powder coating material is advantageous for safety and health due to the absence of dissociation of blocking agents and for economy due to a content of latent NCO greater than conventional uretidione-based powder coating materials. When a curing agent obtained from the polyisocyanate compound is used in combination with a polyester polyol having 30% or greater of hydroxyl group bonded to secondary carbon atom in the entire hydroxyl group, the curing temperature is lowered and the coating film exhibits excellent gloss like solvent-based coating materials, smoothness of the surface, weatherability and mechanical properties.
摘要:
The polyurethane resin produced by reacting a component composed mainly of an active hydrogen-containing compound with a component composed mainly of an organic polyisocyanate compound which contains a backbone structure represented by the formula: in an amount of 25% by weight or higher, exhibits a high gas-barrier property and a high adhesion property. Accordingly, the present invention provides: (A) a two-part liquid curable polyurethane resin composition having an excellent adhesion property; (B) a heat-curing gas-barrier polyurethane resin useful as a packaging material; and (C) a paint having excellent rust-proofing property, corrosion resistance and aesthetic decorating property.
摘要:
Provided is a fuel system comprising a fuel vessel, molded parts for a fuel and/or a tube for a fuel in which bodies are constituted from at least one of a thermoplastic resin and a synthetic rubber, wherein a coating layer is formed on the surfaces in at least one side of the insides and the outsides of the fuel vessel body, the molded part bodies for a fuel and/or the tube body for a fuel or at least one of connected parts in these bodies; the above coating layer is formed by curing a polyurethane resin composition comprising an active hydrogen-containing compound (A) and an organic polyisocyanate compound (B); and the above coating layer has a gasoline permeability coefficient of 2 g·mm/m2·day or less at 23° C. and a relative humidity of 60% RH. The above coating layer is excellent in a permeation-preventing performance against an automobile fuel (gasoline barrier property), an adhesion property between fuel vessel body and molding parts or tube, a heat resistance and an impact resistance, a flexibility, a bending resistance, etc., then a fuel vessel, molded parts for a fuel and a tube for a fuel which have excellent performances are obtained.
摘要翻译:提供了一种燃料系统,其包括燃料容器,用于燃料的模制部件和/或用于燃料的管,其中主体由热塑性树脂和合成橡胶中的至少一种构成,其中在所述表面上形成涂层 在燃料容器本体的内部和外部的至少一侧,用于燃料的模制零件体和/或用于燃料的管体或这些主体中的至少一个连接部分; 通过固化含有活性氢化合物(A)和有机多异氰酸酯化合物(B)的聚氨酯树脂组合物形成上述涂层; 上述涂层在23℃,相对湿度为60%RH的汽油透过系数为2g·mm / m 2·天以下。 上述涂层在汽车燃料的防渗透性(汽油阻隔性),燃料容器主体和成型部件或管之间的粘合性,耐热性和耐冲击性,挠性,耐弯曲性, 然后获得燃料容器,用于燃料的模制零件和具有优异性能的燃料管。
摘要:
Provided is a gas-barriering coated film obtained by coating a gas barriering layer on at least one face of a flexible film or an inorganic-deposited polymer film, wherein the above gas-barriering layer is a polyurethane resin-cured material formed from a composition comprising an active hydrogen-containing compound (A) and an organic polyisocyanate compound (B), and 20% by weight or more of a skeletal structure represented by Formula (1) is contained in the above resin-cured material. The gas-barriering coated film of the present invention is excellent in various performances such as a layer-to-layer adhesive property, a gas barriering property at a high humidity, a bending resistance and a retort treating resistance in addition to a high gas barriering property, and therefore it is applied to various uses including packing materials for food and medicines to which a high gas barriering property is required.
摘要:
In an image forming apparatus employing a process cartridge for image forming apparatus which is equipped with a chip including a rewritable non-volatile memory, the non-volatile memory at least includes a read-only region and an arbitrarily rewritable region, a control program for writing data to the read-only region is installed in the arbitrarily rewritable region, and the use of the control program is limited after the completion of the writing of data to the read-only region.
摘要:
It is an object of the present invention to provide a method for manufacturing a multi-layered unit for a multi-layered ceramic electronic component which can reliably prevent short circuit failure from occurring in a multi-layered ceramic electronic component and form an electrode layer in a desired manner.A method for manufacturing a multi-layered ceramic electronic component includes a step of printing a conductive paste containing a binder containing ethyl cellulose having a weight average molecular weight of MWL and ethyl cellulose having a weight average molecular weight of MWH at a weight ratio of X:(1−X), where MWL, MWH and X are selected so that X*MWL+(1−X)*MWH falls within a range of 145,000 to 215,000 and at least one solvent selected from the group consisting of isobornyl acetate, dihydroterpinyl methyl ether, terpinyl methyl ether, α-terpinyl acetate, I-dihydrocarvyl acetate, I-menthone, I-menthyl acetate, I-perillyl acetate and I-carvyl acetate on a ceramic green sheet containing a butyral system resin as a binder in a predetermined pattern, thereby forming an electrode layer.