Asahi Kasei Kabushiki Kaisha

Japan Elastomer Co., Ltd.

Ippei Kameda

Yoshifumi Araki

Kenta Shibuya

Hitoshi Yamamoto

Takeshi Aoyagi

Tadashi Matsushita

Takahiro Hisasue

Masato Yamada

Toshikazu Hoshina

Atsushi Yasumoto

Mika Horiuchi

Kosuke Nakatani

Naoki Taniguchi

Yuta Kamei

A block copolymer comprising wherein each curved portion represents a saturated or unsaturated hydrocarbon group having 1 to 20 carbon atoms which is unsubstituted or optionally has a substituent, X represents a group 1 element, and 'polymer' represents a polymer moiety.

Block copolymer, polymer composition, composition for viscous adhesive, viscous adhesive composition, and coupling agent

An object of the present invention is to provide a hydrogenated copolymer composition and the like having an excellent balance among initial tack strength, suppression of increase in tackiness, and suppression of uneven thicknesses of a tacky layer. The object can be achieved with the following hydrogenated copolymer composition. A hydrogenated copolymer composition comprising: a component (a) comprising a polymer block comprising a vinyl aromatic monomer unit as a main component and a polymer block comprising a conjugated diene monomer unit as a main component; and a component (b) comprising a polymer block comprising a vinyl aromatic monomer unit as a main component and a polymer block comprising a conjugated diene monomer unit as a main component.

Hydrogenated copolymer composition, adhesive material composition, and adhesive film

A partially hydrogenated block copolymer of the present invention includes: a polymer block (A) containing a vinyl aromatic monomer unit as a main component: and a polymer block (B) containing a conjugated diene monomer unit, wherein in a differential molecular weight distribution (B) of a degradation product of the partially hydrogenated block copolymer obtained by an ozone degradation method, a distribution of degree of hydrogenation H, which is given by a maximum peak height in a region of a molecular weight of 800 or more and 3,000 or less, is 0.01 to 0.5.

Partially hydrogenated block copolymer, viscous adhesive composition, viscous adhesive tape, label, modified asphalt composition, modified asphalt mixture, and paving binder composition

A hydrogenated block copolymer composition, comprising:

Hydrogenated block copolymer composition and pressure-sensitive adhesive composition

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Tokyo, Japan

Ippei Kameda