Abstract: A thread wound golf ball having good shot feel and controllability as well as excellent flight performance which comprises a center composed of a vulcanized molded article of a rubber composition, a thread rubber layer formed on the center and a cover covering the thread rubber layer, wherein the center has a diameter of from 30 to 38 mm and a deformation amount, formed by applying an initial load of 10 kg to a final load of 30 kg to the center, of from 1 to 2.5 mm and the cover is formed from a heated mixture of an ionomer resin, an maleic anhydride-modified thermoplastic resin and an epoxidated thermoplastic resin having a JIS-A hardness of 30 to 90.

Abstract: The present invention provides a multi-piece solid golf ball having good shot feel, while keeping the characteristics inherent to the solid golf ball, i.e. excellent flight performance. The present invention related to a multi-piece solid golf ball comprising a core, one or more intermediate layers formed on the core, and a cover covering the intermediate layer, wherein at least one of the intermediate layer is mainly composed of a heated mixture comprising at least two materials selected from the following three materials:(A) ionomer resin,(B) thermoplastic elastomer having terminal OH groups, and(C) either epoxy-group containing styrene-butadiene-styrene block copolymer or epoxy-group containing styrene-isoprene-styrene block copolymer, and the intermediate layer has a JIS-C hardness of 40 to 80, and the core has a JIS-C hardness difference ranging from its center to the surface of not more than 15.

Abstract: The present invention provides a solid golf ball wherein rebound characteristics and shot feel at the time of hitting are improved without adversely affecting satisfactory flight distance and durability as a feature of the solid golf ball.Disclosed is a solid golf ball comprising a core and a cover formed on the core, the core being composed of a rubber composition containing (i) a base rubber, (ii) a metal salt of .alpha.,.beta.-unsaturated carboxylic acid, (iii) a co-crosslinking initiator, and (iv) a specific organosulfur compound.

Abstract: A golf ball comprising a core and a cover formed on the core, wherein the cover is formed from a mixture of an ionomer resin and an epoxy group containing a polymer or an OH group containing a soft elastomer and has a thickness of from 0.4 to 1.85 mm, a flexural modulus of from 100 to 1,500 kgf/cm.sup.2 and a shore D hardness of from 30 to 65.

Abstract: Disclosed is a golf ball having good shot feel and controllability as well as satisfactory flight performance and cut resistance. The golf ball has a core and a cover for covering the core, wherein said cover has a stiffness modulus of 100 to 250 MPa and comprises a heated mixture of an ionomer resin and a glycidyl group-modified styrene-based block copolymer having a JIS-A hardness of 30 to 90 as base resin, and optionally a maleic anhydride-modified olefin copolymer.

Abstract: The present invention provides a golf ball which is superior in shot feel and controllability, and is superior in flight performance, durability and cut resistance and also have sufficient safety. The golf ball comprises a solid center, a thread rubber layer formed on the solid center and a cover formed on the thread rubber layer,wherein the solid center is composed of an inner spherical rubber formed of a vulcanized molded rubber composition containing an oily substance, and a coating layer of an oil-resistant substance for coating around the inner spherical rubber so as to prevent the bleeding of the oily substance of the inner spherical rubber, andthe cover contains an ionomer resin as a main component and a cover composition constituting the cover has a stiffness modulus of from 70 to 280 MPs.

Abstract: Disclosed is a golf ball having excellent hit feeling, control properties and flying performances. The golf ball has a core and a cover for covering the core. The base resin of the cover comprises a mixture of three specific resins (A), (B), and (C), and the cover has a stiffness modulus of 130 to 300 MPa and a Shore D hardness of 43 to 58. Resin (A) is a high rigid ionomer resin or resin mixture, Resin (B) is a moderate rigid ionomer resin or resin mixture, and Resin (C) is a low rigid copolymer resin.

Abstract: The present invention provides a golf ball which is superior in hit feeling, control properties, flying performances and cut resistance. As the base resin of the cover of the golf ball, a heated mixture composed of (A) an ionomer resin or a mixture thereof, (B) a terpolymer resin of .alpha.-olefin, unsaturated carboxylate and unsaturated carboxylic acid and (C) a glycidyl group-containing .alpha.-olefinic copolymer resin is used.

Abstract: The present invention provides a water absorbent matter which is physically and chemically stable, difficult in shifting and falling-off of a water-absorbent resin particle and from a cellulose fiber, and thereby, has superior water-absorbent properties. A water absorbent matter like this is made by containing a water-absorbent resin particle having an acidic group such as a carboxyl group on the surface, a cellulose fiber, and a cationic high-molecular compound having a weight-average molecular weight of 2,000 or more, so that the water-absorbent resin particle is firmly set on the cellulose fiber by a cationic high-molecular compound in the presence of water.

Abstract: A waterproofing agent for an optical or electric cable, formed of a cross-linked macromolecular compound containing a sulfonic acid group or a salt thereof in an amount of not less than 0.5 mg. equivalent/g and a dissociating group in an amount of not less than 1.0 mg. equivalent/g, and a method for waterproofing said cable by packing said waterproofing agent in the sheath of said cables.

Abstract: Coloring fine particles produced by heating spheroidal coloring fine particles with an average fine particle diameter of 1-100 .mu.m obtained by suspension polymerization to a temperature of 30.degree. to 200.degree. C., thereby causing the particles to fuse together in a block without completely destroying the particle interfaces, and then crushing the block to substantially the same average particle diameter of the spheroidal coloring particles before melting, and a toner for developing electrostatic images using the same.

Abstract: A waterproofing agent for an optical or electric cable, formed of a cross-linked macromolecular compound containing a sulfonic acid group or a salt thereof in an amount of not less than 0.5 mg. equivalent/g and a dissociating group in an amount of not less than 1.0 mg. equivalent/g, and a method for waterproofing said cable by packing said waterproofing agent in the sheath of said cables.

Abstract: Coloring fine particles produced by heating spheroidal coloring fine particles with an average fine particle diameter of 1-100 .mu.m obtained by suspension polymerization to a temperature of 30.degree. to 200.degree. C., thereby causing the particles to fuse together in a block without completely destroying the particle interfaces, and then crushing the block to substantially the same average particle diameter of the spheroidal coloring particle before melting, and a toner for developing electrostatic images using the same.

Abstract: The present invention provides dye transfer type thermal printing sheet comprising a base sheet, a dye-containing layer formed on the base sheet and a dye-permeable layer which is formed on the dye-containing layer and comprises at least one water dispersible polysiloxane graft polymer which is obtainable by polymerizing (B) 0.05 to 10% by weight of a polymerizable silane compound, (C) 1 to 30% by weight of an unsaturated organic acid and (D) 40 to 97.95% by weight of a monomer which is copolymerizable with the silane compound (B) and the unsaturaed organic acid (C) in the presence of (A) 1 to 20% by weight of a polysiloxane having terminal hydroxyl groups (provided that the total of the components (A), (B), (C) and (D) is 100% by weight) in an organic solvent except an alcohol or at least one salt of said graft polymer with a base, which has good storage stability, generates images with improve weather durability and prevents great decrease of print density as increase of the number of printing times.

Abstract: Methods are disclosed for the production of (I) a cationic water-soluble resin by the reaction of a polyethylene glycol polyhalohydrin ether resulting from the reaction between polyethylene glycol and an epihalohydrin with an aziridine compound and (II) and (III) cationic water-soluble resins by the reaction of (I) the resin with an epihalohydrin and/or a polyfunctional epoxy compound in the presence or absence of a polyalkyleneimine. The resins (I), (II), and (III) are stable over a wide range of pH value and are useful as a water-treating agent.

Abstract: A carbon black-graft polymer, produced by causing a polymer possessing within the molecular unit thereof at least one reactive group selected from the class consisting of aziridine group, oxazoline group. N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black. The polymer can be used as a toner for electrostatically charged image, resin composition, coating composition, ink for thermographic transfer, coating agent for magnetic recording medium, rubber composition, and carbon black dispersion and the like.

Abstract: A cement dispersant containing a water-soluble polymer containing at least 10 mol % of structural units represented by the general formula I: ##STR1## wherein X is H or CH.sub.2 R.sup.1, R.sup.1 is H or COO--[--A).sub.m B).sub.n ]H, R is H, CH.sub.3, or COO--[--A).sub.m B).sub.n ]H (providing that R is H where X is CH.sub.2 R.sup.1), A is iminoalkylene having 2 to 4 carbon atoms, B is oxyalkylene having 2 to 4 carbon atoms, m is an average number in the range of 0.1 to 10, n is O or an average positive number not more than 100, --A).sub.m may be in a linear or branched configuration, wherein the sequence of A and B in the segment in parenthesis may be regular or random.

Abstract: A carbon black-graft polymer, produced by causing a polymer possessing within the molecular unit thereof at least one reactive group selected from the class consisting of aziridine group, oxazoline group. N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon balck. The polymer can be used as a toner for electrostatically charged image, resin composition, coating composition, ink for thermographic transer, coating gent for magnetic recording medium, rubber composition, and carbon black dispersion and the like.

Abstract: A thermosetting resin decorative laminated sheet faced with a resin-impregnated sheet layer obtained by impregnating a sheetlike material with a resin composition containing an amino resin (I) produced by the reaction of formaldehyde with an amino compound (A) having as an essential component thereof at least one carboguanamine (a) selected from the group consisting of cyclohexanecarboguanamine and norbornanecarboguanamine and curing the resultant impregnated sheetlike material excels in flexibility, crack resistance, light resistance, and chemical resistance. A decorative overlaid plywood enjoying similarly desirable properties is obtained by integrating the aforementioned sheet layer with a substrate.

Abstract: A carbon black-graft polymer, produced by causing a polymer possessing within the molecular unit thereof at least one reactive group selected from the class consisting of aziridine group, oxazoline group. N-hydroxyalkylamide group, epoxy group, and thioepoxy group to react with carbon black. The polymer can be used as a toner for electrostatically charged image, resin composition, coating composition, ink for thermographic transer, coating gent for magnetic recording medium, rubber composition, and carbon black dispersion and the like.