Abstract:
A thermoplastic elastomer composition dynamically vulcanized to a gelation rate of 50 to 95% which is superior in heat resistance and durability while maintaining flexibility and superior in air permeation preventive property which can be efficiently used as, for example, a pneumatic tire as an air permeation preventive layer. In particular, a thermoplastic elastomer composition having a reduced particle size of the domain rubber is produced by a material having a high rubber ratio by mixing a composition (C) mixed under conditions of a ratio of melt viscosities of the rubber composition (A)/resin (B) of 0.8 to 1.2 and the formula (&phgr;A/&phgr;B)×(&eegr;B/&eegr;A)
Abstract:
A thermoplastic elastomer composition which, when used for the inner tube and/or outer cover of a hose, can improve the hose flexibility at an ordinary temperature and low temperature, oil resistance, and cold resistance and can reduce the production costs since it does not require a vulcanization step and a hose having said properties using this elastomer composition for its inner tube and/or outer cover and a process and apparatus for the production thereof.
Abstract:
A thermoplastic elastomer composition containing a component (A) (thermoplastic polyolefin resin), component (B) (epoxy-group-containing ethylene acrylic ester copolymer rubber), and component (C) (acid-modified polyolefin resin) comprising a continuous phase of the component (A) in which the component (B) is dispersed as a dispersed phase and is cross-linked by a peroxide; a thermoplastic elastomer composition comprising a continuous phase of a thermoplastic polyolefin resin (A) and a dispersed phase of an epoxy-group-containing ethylene-acrylic ester copolymer rubber component (B) and acrylonitrile butadiene rubber component (C), which is dynamically cross-linked; and a hose having an inner tube, at least one reinforcing layer, and an outer cover, wherein the inner tube and the outer cover contain a thermoplastic elastomer composition comprised of a thermoplastic resin in which is blended an at least partially cross-linked elastomer component, the reinforcing layer is a brass-plated wire, and the reinforcing layer and inner tube and the reinforcing layer and outer cover have between them a maleic-acid-modified polyolefin thermoplastic resin.
Abstract:
A microbioelectrode having high performance produced by immobilization by incorporating a biologically active substance in the interior or on the surface of a porous conductive material layer or fine particle layer which has been deposited on the surface of a transducing material. The inventive microbioelectrode demonstrates sufficient output even if the sensor using the electrode is very small in size.
Abstract:
A porous ceramic material composed of a sintered porous body of a calcium phosphate compound is described. A multiplicity of capillary void paths having a diameter of 1 to 30 .mu.m and a multiplicity of pores having a diameter of 1 to 600 .mu.m are formed in the sintered porous body. At least part of the pores are connected to the exterior space of the sintered porous body through at least a part of the capillary voids. The porous ceramic material is valuable as a medical material, e.g., a substitute or prosthesis for bone or dental root, and also an electronic material and a genetic engineering material.When the porous ceramic material is embedded in a bone defect of human or animals, osteolytic cells, osteoblasts, erythrocytes and body fluid are selectively allowed to intrude through the porous ceramic material while almost no intrusion of osteoclasts and collagen fibers is allowed. Accordingly, the porous ceramic material can be utilized for inducing new-born bone, controlling resorption of bone with age, remedying bone defects.
Abstract:
A molding resin composition which includes (a) an aromatic polyester, (b) a tackifier, (c) a polyol compound having two or more hydroxy groups per molecule and (d) a polyolefin, wherein the polyolefin (d) is present in an amount of 5 to 40 parts by weight per 100 parts by weight of the aromatic polyester (a) and the polyolefin (d) combined, has an excellent adhesion to polyolefins, metals and PVC, and also has an excellent gasoline resistance.
Abstract:
A thermoplastic elastomer composition dynamically vulcanized to a gelation rate of 50 to 95% which is superior in heat resistance and durability while maintaining flexibility and superior in air permeation preventive property which can be efficiently used as, for example, a pneumatic tire as an air permeation preventive layer. In particular, a thermoplastic elastomer composition having a reduced particle size of the domain rubber is produced by a material having a high rubber ratio by mixing a composition (C) mixed under conditions of a ratio of melt viscosities of the rubber composition (A)/resin (B) of 0.8 to 1.2 and the formula (φA/φB)×(ηB/ηA)
Abstract translation:一种热塑性弹性体组合物,其动态硫化至50至95%的凝胶化速率,其耐热性和耐久性优异,同时保持柔软性和优异的防透气性,可有效地用作例如充气轮胎作为空气渗透 预防层。 特别地,通过混合在橡胶组合物(A)/(A)的熔体粘度的比例的条件下混合的组合物(C),通过使用具有高橡胶比的材料来制造具有减小的领域橡胶粒径的热塑性弹性体组合物, 树脂(B)为0.8〜1.2,通式(i> i i i i i <<<<<<<<<<<<<<<<<<<<<<<<<<< 橡胶组合物(D)/组合物(C)的熔体粘度比为0.8〜1.2和式(phi / D / C / C)的条件下, /SUB>)x(etaC/etaD)1.0,其中橡胶组合物(A)的体积分数,phi B:树脂(B)的体积分数,ηA:橡胶组合物(A)的熔融粘度,乙烯B:树脂的熔融粘度 (B),化合物(C)的体积分数,橡胶组合物(D)的体积分数,ηC :组合物(C)的熔融粘度,η的熔体粘度:r的熔体粘度 ubber组成(D)。 另外,具有作为分散相的弹性体组合物(A)和热塑性树脂组合物(B)作为基质并具有由至少两种热塑性树脂的共混物组成的热塑性树脂组合物的热塑性弹性体组合物。
Abstract:
A thermoplastic elastomer composition dynamically vulcanized to a gelation rate of 50 to 95% which is superior in heat resistance and durability while maintaining flexibility and superior in air permeation preventive property which can be efficiently used as, for example, a pneumatic tire as an air permeation preventive layer. The method includes mixing a composition (C) mixed under conditions of a ratio of melt viscosities of the rubber composition (A)/resin (B) of 0.8 to 1.2 and the formula (φA/φB)×(ηB/ηA)
Abstract:
A porous ceramic material composed of a sintered porous body of a calcium phosphate compound is described. A multiplicity of capillary void paths having a diameter of 1 to 30 .mu.m and a multiplicity of pores having a diameter of 1 to 600 .mu.m are formed in the sintered porous body. At least part of the pores are connected to the exterior space of the sintered porous body through at least a part of the capillary voids. The porous ceramic material is valuable as a medical material, e.g., a substitute or prosthesis for bone or dental root, and also an electronic material and a genetic engineering material.When the porous ceramic material is embedded in a bone defect of human or animals, osteolytic cells, osteoblasts, erythrocytes and body fluid are selectively allowed to intrude through the porous ceramic material while almost no intrusion of osteoclasts and collagen fibers is allowed. Accordingly, the porous ceramic material can be utilized for inducing new-born bone, controlling resorption of bone with age, remedying bone defects.