A heat conduction sheet, includes at least one kind of graphite particle (A) selected from the group consisting of scale-like particles, ellipsoidal particles and rod-like particles; a polymer (B) having an isobutylene structure; an ethylene-propylene copolymer (C); and an ethylene octene elastomer (D), in which, in a case of scale-like particles, a plane direction of the particle is oriented in a thickness direction of the heat conduction sheet, and in a case of ellipsoidal particles or rod-like particles, a long axis direction of the particle is oriented in the thickness direction of the heat conduction sheet.

A heat conduction sheet, includes at least one kind of graphite particle (A) selected from the group consisting of scale-like particles, ellipsoidal particles and rod-like particles; a polymer (B) having an isobutylene structure; an ethylene-propylene copolymer (C); and an ethylene octene elastomer (D), in which, in a case of scale-like particles, a plane direction of the particle is oriented in a thickness direction of the heat conduction sheet, and in a case of ellipsoidal particles or rod-like particles, a long axis direction of the particle is oriented in the thickness direction of the heat conduction sheet.

A heat conduction sheet, includes at least one kind of graphite particle (A) selected from the group consisting of scale-like particles, ellipsoidal particles and rod-like particles; a polymer (B) having an isobutylene structure; an ethylene-propylene copolymer (C); and an ethylene octene elastomer (D), in which, in a case of scale-like particles, a plane direction of the particle is oriented in a thickness direction of the heat conduction sheet, and in a case of ellipsoidal particles or rod-like particles, a long axis direction of the particle is oriented in the thickness direction of the heat conduction sheet.

A modified lignin reinforced rubber is obtained by subjecting a lignin to composite modification by a compound containing a carbon-carbon double bond, a compound containing a sulfur element and a compound capable of blocking a hydroxyl; the lignin is modified with the compound containing the carbon-carbon double bond, and the contained double bond and an olefin in the rubber generate a bonding effect, which improves a binding force between the lignin and the rubber; furthermore, by modifying the lignin with the compound containing the sulfur element, the lignin contains a certain amount of the element sulfur, which improves an interaction between the lignin and the rubber, improves properties of the rubber, and reduces the use of a vulcanizing agent, and further increases a replacement amount of the lignin to carbon black.

A modified lignin reinforced rubber is obtained by subjecting a lignin to composite modification by a compound containing a carbon-carbon double bond, a compound containing a sulfur element and a compound capable of blocking a hydroxyl; the lignin is modified with the compound containing the carbon-carbon double bond, and the contained double bond and an olefin in the rubber generate a bonding effect, which improves a binding force between the lignin and the rubber; furthermore, by modifying the lignin with the compound containing the sulfur element, the lignin contains a certain amount of the element sulfur, which improves an interaction between the lignin and the rubber, improves properties of the rubber, and reduces the use of a vulcanizing agent, and further increases a replacement amount of the lignin to carbon black.

A modified lignin reinforced rubber is obtained by subjecting a lignin to composite modification by a compound containing a carbon-carbon double bond, a compound containing a sulfur element and a compound capable of blocking a hydroxyl; the lignin is modified with the compound containing the carbon-carbon double bond, and the contained double bond and an olefin in the rubber generate a bonding effect, which improves a binding force between the lignin and the rubber; furthermore, by modifying the lignin with the compound containing the sulfur element, the lignin contains a certain amount of the element sulfur, which improves an interaction between the lignin and the rubber, improves properties of the rubber, and reduces the use of a vulcanizing agent, and further increases a replacement amount of the lignin to carbon black.

An adhesive composition, and a coverlay film and a printed circuit board that include the adhesive composition are disclosed. The adhesive composition includes: (a) an epoxy resin; and (b) a binder resin including epoxidized polybutadiene rubber and at least two kinds of rubber. The adhesive composition can form an adhesive layer superb in terms of adhesiveness, fluidity, filling properties (landfilling), migration resistance, heat resistance, flame retardancy, low elongation, and flexibility.

An adhesive composition, and a coverlay film and a printed circuit board that include the adhesive composition are disclosed. The adhesive composition includes: (a) an epoxy resin; and (b) a binder resin including epoxidized polybutadiene rubber and at least two kinds of rubber. The adhesive composition can form an adhesive layer superb in terms of adhesiveness, fluidity, filling properties (landfilling), migration resistance, heat resistance, flame retardancy, low elongation, and flexibility.

Provided is a golf ball is excellent in flight distance performance, approach performance, and feel at impact. A ball 2 includes a core 4, a mid layer 6, and a cover 8. The core 4 includes an inner core 10 and an outer core 12. The cover 8 includes an inner layer cover 10 and an outer layer cover 12. An inner core volume Vc, a mid layer volume Vm, a mid layer hardness Hm, an inner layer cover volume Vinc, an inner layer cover hardness Hinc, an outer layer cover volume Vouc, an outer layer cover hardness Houc, and a ball volume V meet the following relational expressions (a) to (g): (a) Vc/V<0.07, (b) Hm>Hinc>Houc, (c) Hm−Houc>25, (d) Vm>Vinc>Vouc, (e) (Vm+Vinc+Vouc)/V<0.30, (f) Vm/Vouc>1.50, and (g) (Vm*Hm)/(Vouc*Houc)>3.0.

Provided is a golf ball is excellent in flight distance performance, approach performance, and feel at impact. A ball 2 includes a core 4, a mid layer 6, and a cover 8. The core 4 includes an inner core 10 and an outer core 12. The cover 8 includes an inner layer cover 10 and an outer layer cover 12. An inner core volume Vc, a mid layer volume Vm, a mid layer hardness Hm, an inner layer cover volume Vinc, an inner layer cover hardness Hinc, an outer layer cover volume Vouc, an outer layer cover hardness Houc, and a ball volume V meet the following relational expressions (a) to (g): (a) Vc/V<0.07, (b) Hm>Hinc>Houc, (c) Hm−Houc>25, (d) Vm>Vinc>Vouc, (e) (Vm+Vinc+Vouc)/V<0.30, (f) Vm/Vouc>1.50, and (g) (Vm*Hm)/(Vouc*Houc)>3.0.