Abstract:
A golf ball 2 includes a core 4, a first mid layer 6, a second mid layer 8, and a cover 12. The core 4 includes a center 18 and an envelope layer 20. The center 18 is formed by crosslinking a first rubber composition, and the envelope layer 20 is formed by crosslinking a second rubber composition. The first rubber composition or the second rubber composition includes a base rubber, a co-crosslinking agent, a crosslinking initiator, and an acid and/or a salt. The co-crosslinking agent is: (1) an α , β-unsaturated carboxylic acid having 3 to 8 carbon atoms; and/or (2) a metal salt of an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms. A hardness Hm2 of the second mid layer 8 is greater than a hardness Hm1 of the first mid layer 6. The hardness Hm2 is greater than a hardness Hc of the cover 12.
Abstract:
The purpose of the present invention is to provide an adsorbent composition which can be easily formed into a film by inflation molding at relatively low temperatures even if zeolite is contained therein, and which is not susceptible to the formation of a pin hole. An adsorbent composition which is a resin composition containing a resin, zeolite and a metal soap, and wherein the metal soap contains a long-chain fatty acid calcium, which is a divalent salt of calcium and a long-chain fatty acid having 5-30 carbon atoms, and a long-chain fatty acid zinc, which is a divalent salt of zinc and a long-chain fatty acid having 5-30 carbon atoms.
Abstract:
A nitrile rubber composition comprising 5 to 50 parts by weight of carbon black, 5 to 60 parts by weight of graphite having an average particle diameter of 5 µm or less, 5 to 50 parts by weight of conductive carbon other than these carbon black and graphite, and 0.5 to 3.5 parts by weight of 2,5-di-tert-butylhydroquinone or 2,5-di-tert-amylhydroquinone as an antioxidant, based on 100 parts by weight of nitrile rubber. The nitrile rubber composition can yield a vulcanization molded product, besides maintaining characteristics as a conductive material, satisfying muddy water resistance, sealing properties, and low torque characteristics required for rolling bearing oil seals for vehicles, etc., and having a rubber volume change kept low when the product is washed with water after exposure to an antifreezing agent.
Abstract:
Provided is a vinyl chloride resin composition for powder molding that can provide a molded product having superior flexibility at low temperatures. The vinyl chloride resin composition for powder molding includes (a) vinyl chloride resin particles, (b) a plasticizer, and (c) vinyl chloride resin fine particles having an average degree of polymerization of at least 1,000 and no greater than 5,000.
Abstract:
To provide a flame-retardant resin composition which is excellent in extrusion moldability, mechanical characteristics, flame retardancy and the like, and imparts slipperiness to a molded product surface, and ensures that a cable surface has reduced friction, and wire insertability to a conduit is satisfactory when the flame-retardant resin composition is used in an optical cable, and an optical cable including the resin composition. The flame-retardant resin composition of the present invention contains as a resin component a specific amount of at least one of polyethylene and an ethylene-± olefin copolymer each having a density in a predetermined range; and a specific amount of a polyolefin resin modified with an unsaturated carboxylic acid, contains a specific amount of magnesium hydroxide and aluminum hydroxide in combination as a flame retardant, and further a specific amount of a silicone-based lubricant with respect to the resin component, is excellent in extrusion moldability, mechanical characteristics, flame retardancy and the like, and ensures that wire insertability to a conduit is satisfactory when the flame-retardant resin composition is used in an optical cable.
Abstract:
Estergemische umfassend die Ester A(COOR 1 )(COOR 1 ) x , A(COOR 1 )(COOR 2 ) x , A(COOR 2 )(COOR 1 ) x und A(COOR 2 )(COOR 2 )x, können gezielt durch Verfahren hergestellt werden, in welchen Säuren A(COOH) x+1 oder deren Derivate mit einer Menge (m 1 + s 1 ) R 1 OH und einer Menge m 2 R 2 OH umgesetzt werden, wobei das Reaktionsgemisch zum Sieden erhitzt wird, der Alkohol R 1 OH einen niedrigeren Siedepunkt aufweist als der Alkohol R 2 OH, A für einen aromatischen, alicyclischen oder aliphatischen Rest steht, x 1 oder 2 ist und R 1 und R 2 unabhängig voneinander für substituierte oder nichtsubstituierte Arylreste oder lineare oder verzweigte, substituierte oder nicht substituierte Alkylreste mit 3 bis 20 Kohlenstoffatomen stehen, m 1 und m 2 den Mol-Äquivalenten der in A(COOH) x+1 oder deren Derivaten einzuführenden Alkoholresten OR 1 und OR 2 entspricht und s 1 größer als 0 ist.
Abstract:
A carbon fiber composite material 60 of the present invention includes: cell structures 300 with an elastomer 30 surrounded by a first carbon nanofiber 80 and an interface phase 30a thereof; cell structure assemblies 400 as assemblies of more than one of the cell structures 300; and tie structures 500 that join the cell structure assemblies 400 to each other. The tie structures 500 are formed by one or more first carbon nanofibers 80, one or more second carbon nanofibers 90, and the elastomer interface phase 30a surrounding the one or more first carbon nanofibers 80 and the one or more second carbon nanofibers 90.