Abstract: A pressure-sensitive adhesive composition includes a component (i) and a component (ii) and a component (i), the component (i) being a copolymer (I) obtained by hydrogenating a copolymer (I?) having a structure shown by [A-B]n, the component (ii) being a copolymer (II) obtained by hydrogenating a copolymer (II?) including the polymer block A having at least 80% of an aromatic alkenyl compound unit content at a terminal and at least one block B having a specified conjugated diene compound unit content and a specified conjugated diene compound-derived vinyl bond content in the intermediate portion, the mass ratio of component (i) to the component (ii), and that in terms of the total amount of A to B included in the copolymer (I?) and the copolymer (II?) being within given ranges, respectively, 80% or more of conjugated diene compound-derived double bonds included in the copolymers (I?) and (II?) being hydrogenated.

Abstract: A hydrogenated diene-based copolymer satisfying predetermined conditions, which is obtained by hydrogenating a block copolymer containing at least two polymer blocks (A) composed mainly of a vinyl aromatic compound and at least one vinyl aromatic compound-conjugated diene compound copolymer block (B). The hydrogenated diene-based copolymer is per se superior in processability, flexibility, weather resistance, vibration-damping property and mechanical properties, and can provide a shaped article highly flexible and superior in various properties such as mechanical properties, appearance, mar resistance, weather resistance, heat resistance, vibration-damping property, processability and the like.

Abstract: An objective of the present invention is to provide a resin composition which gives a molding excellent in flexibility, impact resilience and mechanical properties and a golf ball having the better shot feel, a long carry, and the excellent cutting resistance when used in a golf ball cover. The resin composition of the present invention is characterized in comprising an ionomer resin, an alkoxysilyl group-containing hydrogenated conjugated diene-based polymer and/or an amino group-containing hydrogenated conjugated diene-based polymer. Alkoxysilyl group content and amino group content in the above-mentioned polymers are preferably 0.0001 to 5 mmol/g, respectively. The golf ball of the invention is characterized in that core is covered with a cover material using the above-mentioned resin composition.

Abstract: An objective of the present invention is to provide a hydrogenated modified polymer which can afford a molded body excellent in improvement in the balance among the impact resistance, the strength, the adherability and as the appearance, and a process for producing the same as well as a composition containing the same. Another objective is to provide a composition which can afford a molded body excellent in the balance among the flame retardancy, the tensile strength, the tensile extension, the heat resistance, the characteristic at low temperature, the insulation property, the pliability and the like. The hydrogenated modified polymer of the invention is a hydrogenated polymer of a modified conjugated diene-based polymer obtained by reacting an alkoxysilane compound to a polymer which is polymerized a conjugated diene or a conjugated diene and another monomer using an organic alkali metal compound as a polymerization initiator in an inert organic solvent such as cyclohexane and the like.

Abstract: An objective of the present invention is to provide a resin composition which gives a molding excellent in flexibility, impact resilience and mechanical properties and a golf ball having the better shot feel, a long carry, and the excellent cutting resistance when used in a golf ball cover. The resin composition of the present invention is characterized in comprising an ionomer resin, an alkoxysilyl group-containing hydrogenated conjugated diene-based polymer and/or an amino group-containing hydrogenated conjugated diene-based polymer. Alkoxysilyl group content and amino group content in the above-mentioned polymers are preferably 0.0001 to 5 mmol/g, respectively. The golf ball of the invention is characterized in that core is covered with a cover material using the above-mentioned resin composition.

Abstract: An objective of the present invention is to provide a hydrogenated modified polymer which can afford a molded body excellent in improvement in the balance among the impact resistance, the strength, the adherability and as the appearance, and a process for producing the same as well as a composition containing the same. Another objective is to provide a composition which can afford a molded body excellent in the balance among the flame retardancy, the tensile strength, the tensile extension, the heat resistance, the characteristic at low temperature, the insulation property, the pliability and the like. The hydrogenated modified polymer of the invention is a hydrogenated polymer of a modified conjugated diene-based polymer obtained by reacting an alkoxysilane compound to a polymer which is polymerized a conjugated diene or a conjugated diene and another monomer using an organic alkali metal compound as a polymerization initiator in an inert organic solvent such as cyclohexane and the like.