Abstract: There is provided a crosslinkable fluorine-containing rubber composition being capable of giving a fluorine-containing rubber crosslinked and molded article having a low friction coefficient and assuring an increased proportion of a fluorine-containing resin around the surface of a fluorine-containing rubber, a molded article obtained by crosslinking the composition, and a method for producing the molded article. The crosslinkable fluorine-containing rubber composition comprises a fluorine-containing rubber (A) comprising vinylidene fluoride unit, a fluorine-containing resin (B) and a polyol crosslinking agent (C), wherein the fluorine-containing rubber (A) and the fluorine-containing resin (B) are kneaded at a temperature of not less than a temperature being lower by 5° C. than the melting point of the fluorine-containing resin (B).

Abstract: There is provided a crosslinkable fluorine-containing rubber composition being capable of giving a fluorine-containing rubber crosslinked and molded article having a low friction coefficient and assuring an increased proportion of a fluorine-containing resin around the surface of a fluorine-containing rubber, a molded article obtained by crosslinking the composition, and a method for producing the molded article. The crosslinkable fluorine-containing rubber composition comprises a fluorine-containing rubber (A) comprising vinylidene fluoride unit, a fluorine-containing resin (B) and a polyol crosslinking agent (C), wherein the fluorine-containing rubber (A) and the fluorine-containing resin (B) are kneaded at a temperature of not less than a temperature being lower by 5° C. than the melting point of the fluorine-containing resin (B).

Abstract: A puncture sealing agent for a tire is at least comprising a rubber latex, an adhesive agent, and an antifreezing agent, wherein propylene glycol is used as the antifreezing agent, and further the ratio of the propylene-glycol to the total weight of the puncture sealing agent is set from 20 to 40% by weight.

Abstract: A golf ball superior in resilience performance, cut resistance and spin performance is provided. The golf ball is composed of a core and a cover surrounding the core. The cover is formed of a composition having 0.5-20 parts by weight of organic short fiber blended with respect to 100 parts by weight of a polymer component having thermoplastic elastomer as its main component. Thermoplastic resin may also be blended in the polymer component. The cover composition has a flexural rigidity of 80-300 MPa, and the cover surface has a Shore D hardness of 41-56.

Abstract: The present invention provides a multi-piece solid golf ball having excellent rebound characteristics when hitting at low head speed because the rebound characteristics do not depend on the head speed at the time of hitting.

Abstract: A multi-layer solid golf ball has small impact force and good shot feel at the time of hitting, and excellent rebound characteristics when hitting at low head speed because the rebound characteristics do not depend on the head speed at the time of hitting. The multi-layer solid golf ball core is composed of an inner layer core, intermediate layer core formed on the inner layer core and an outer layer core formed on the intermediate layer core, and one or more layers of cover on the outer layer core, wherein the inner layer core has a deformation amount (X) 3.0 to 4.5 mm, a two-layer core composed of the inner layer core and the intermediate layer core has a deformation amount (Y) 3.5 to 6.0 mm, a three-layer core composed of the two-layer core with the outer layer core has a deformation amount (Z) 3.0 to 5.0 mm.

Abstract: The present invention provides a golf ball having excellent flyer resistance at a shot on the rough, and having high rebound characteristics and excellent flight performance. The present invention relates to a golf ball comprising a core having a single-layered structure or a multi-layered structure and a cover covering the core, wherein the cover has a complex elastic modulus at −10° C. of 20 to 150 MPa and loss tangent (tan &dgr;) at −10° C. of not less than 0.05, as determined from temperature-dependent curves of the complex elastic modulus and tan &dgr; obtained by dynamic viscoelastic measurement at a frequency of 10 Hz, a dynamic strain of 5% and a heating rate of 4° C./min.

Abstract: A core is enveloped by a cover with trans 1,4-polyisoprene as the main component, including a super accelerator formed of dithiocarbamate and/or xanthate, and vulcanized at a temperature lower than the melting point of trans 1,4-polyisoprene to provide a golf ball having high impact resilience and spinning performance. Also, a core is enveloped by an inner layer cover having trans 1,4-polyisoprene as the main component, including a super accelerator formed of dithiocarbamate and/or xanthate, and the inner layer cover is surrounded by an outer layer cover with trans 1,4-polyisoprene as the main component, including a super accelerator of an amount larger than that in the inner layer cover to provide a golf ball having high impact resilience and spinning performance, and whose cover material is sufficiently anchored.

Abstract: A puncture sealing agent for a tire is at least comprising a rubber latex, an adhesive agent, and an antifreezing agent, wherein propylene glycol is used as the antifreezing agent, and further the ratio of the propylene-glycol to the total weight of the puncture sealing agent is set from 20 to 40% by weight.

Abstract: The present invention provides a golf ball having high rebound characteristics and exceptional controllability at approach shot from the rough, which accomplished by controlling its cover material morphology. The present invention relates a golf ball comprising a core and a cover covering the core, wherein the base resin of the cover is formed from a material having at least two phases whose phase angle difference is at least 2 degrees as measured by using an atomic force microscope; a maximum phase angle phase, which is contained in the base resin of the cover and has an absolute value of a maximum phase angle, is present in the form of a continuous matrix; and a minimum phase angle phase, which has an absolute value of a minimum phase angle, is present in discrete locations within the matrix.

Abstract: A golf ball with improved spin performance, i.e., controllability with an iron, as well as improved resilience and scratch resistance is provided. A mixture of polyurethane-type thermoplastic elastomer and a metal compound (other than titanate oxide), for instance, zinc oxide or magnesium oxide, is used as a cover material of the golf ball. More preferably, the metal compound is mixed at 5 to 15 parts by weight for 100 parts by weight of polyurethane-type thermoplastic elastomer, and the Shore D hardness of the cover material of the golf ball is in the range of 30 to 60.

Abstract: A golf ball superior in resilience performance, cut resistance and spin performance is provided. The golf ball is composed of a core and a cover surrounding the core. The cover is formed of a composition having 0.5-20 parts by weight of organic short fiber blended with respect to 100 parts by weight of a polymer component having thermoplastic elastomer as its main component. Thermoplastic resin may also be blended in the polymer component. The cover composition has a flexural rigidity of 80-300 MPa, and the cover surface has a Shore D hardness of 41-56.

Abstract: A golf ball is provided which exhibits good rebound performance, long flight distance and favorable anti-flier characteristics and is excellent in hit feeling and controllability. The golf ball is composed of a core and a cover surrounding the core. The cover is formed by vulcanizing a cover composition including thermoplastic elastomer, trans structure-containing rubber and ionomer resin.

Abstract: A golf ball having excellent resistance to a flyer type golf shot normally produced when a golf shot is executed from the rough, and also having excellent cut resistance and high rebound characteristics, wherein the golf ball cover has a shear modulus (G) of 3 to 100 MPa, a Young's modulus (E) of 9 to 400 MPa, and a ratio (E/G) of 2.4 to 3.0.

Abstract: The present invention provides a golf ball having excellent flyer resistance at a shot on the rough, and having high rebound characteristics and excellent flight performance. The present invention relates to a golf ball comprising a core having a single-layered structure or a multi-layered structure and a cover covering the core, wherein the cover has a complex elastic modulus at −10° C. of 20 to 150 MPa and loss tangent (tan &dgr;) at −10° C. of not less than 0.05, as determined from temperature-dependent curves of the complex elastic modulus and tan &dgr; obtained by dynamic viscoelastic measurement at a frequency of 10 Hz, a dynamic strain of 5% and a heating rate of 4° C./min.

Abstract: The present invention provides a golf ball having high rebound characteristics and exceptional controllability at approach shot from the rough, which accomplished by controlling its cover material morphology. The present invention relates a golf ball comprising a core and a cover covering the core, wherein the base resin of the cover is formed from a material having at least two phases whose phase angle difference is at least 2 degrees as measured by using an atomic force microscope; a maximum phase angle phase, which is contained in the base resin of the cover and has an absolute value of a maximum phase angle, is present in the form of a continuous matrix; and a minimum phase angle phase, which has an absolute value of a minimum phase angle, is present in discrete locations within the matrix.

Abstract: The present invention provides a multi-piece solid golf ball having excellent rebound characteristics when hitting at low head speed because the rebound characteristics do not depend on the head speed at the time of hitting.

Abstract: The present invention provides a multi-piece solid golf ball having excellent durability, excellent shot feel when hitting and good productivity. The present invention relates to a multi-piece solid golf ball which includes a solid core having a inner core and at least one outer core layer formed on the inner core, and a cover covering the solid core, wherein the inner core and outer core are formed from the material obtained by dispersing rubber in an ionomer resin and dynamically vulcanizing it with a vulcanizing agent, wherein the rubber particles dispersed in the ionomer resin have a particle size of not more than 10 .mu.m, the outer core layer has a Shore D hardness of more than that of the inner core by 5 to 30, and a weight ratio of the ionomer resin to the rubber particles is within the range of 95:5 to 30:70.