Abstract: Provided is a new technique that can sufficiently inhibit heat generation in the event of an internal short circuit of an electrochemical device while also reducing IV resistance at low temperature and improving high-temperature storage characteristics of the electrochemical device. A binder composition for an electrochemical device contains a binder and a thermally decomposable material. The thermally decomposable material includes a foaming agent. The thermally decomposable material has a thermal decomposition temperature of 150° C. to 400° C., a number-average particle diameter of 0.01 ?m to 10 ?m, a ratio of the number-average particle diameter relative to volume-average particle diameter of 0.05 to 1, and a circularity of 0.05 to 0.95.

Abstract: Provided is an electrode for an electrochemical device that can sufficiently inhibit heat generation in the event of an internal short circuit and reduce IV resistance in an electrochemical device. The electrode includes a current collector and an electrode mixed material layer. The electrode mixed material layer contains an electrode active material, a binder, and a foaming agent having a thermal decomposition temperature of 150° C. to 400° C. In a thickness direction cross-section of the electrode mixed material layer, thermally decomposable sites formed of the foaming agent and having a circumscribed circle diameter of 1.0 ?m to 10.0 ?m are present, and a number A of the thermally decomposable sites per 50 ?m2 in a surface region of the electrode mixed material layer is larger than a number B of the thermally decomposable sites per 50 ?m2 in a deep region of the electrode mixed material layer.

Abstract: Provided is an intercell spacer that can maintain intercell distance even in a situation in which a cell has expanded inside a battery module at abnormally high temperature. The intercell spacer is arranged between battery cells that are adjacent to each other and includes a heat-resistant anti-compression portion having a Young's modulus of not less than a specific value at a specific temperature in a direction in which the battery cells are adjacent.

Abstract: A crosslinkable rubber composition includes a carboxyl group-containing nitrile rubber (A); a carboxyl group-containing acrylic rubber (B); and a polyamine-based crosslinking agent (C), where a ratio of a weight of the carboxyl group-containing nitrile rubber (A) to a weight of the carboxyl group-containing acrylic rubber (B) is from 5:95 to 95:5. The carboxyl group-containing nitrile rubber (A) includes 5 to 60% by weight of ?,?-ethylenically unsaturated nitrile monomer units, and ?,?-ethylenically unsaturated monocarboxylic acid ester monomer units. The carboxyl group-containing nitrile rubber (A) has an iodine value of 120 or less.

Abstract: A cross-linked rubber prepared by cross-linking a nitrile rubber composition including: a carboxyl group-containing highly saturated nitrile rubber containing 5 to 60 wt % of an ?,?-ethylenically unsaturated nitrile monomer unit, and an ?,?-ethylenically unsaturated monocarboxylic acid ester monomer unit, and having an iodine value of 120 or less; a surface treated silicate; and a polyamine-based cross-linking agent wherein a content is 0.1 to 20 parts by weight with respect to 100 parts by weight of the carboxyl group-containing highly saturated nitrile rubber, wherein when the rubber is subjected to a compression stress relaxation test wherein it is maintained at 150° C. while being compressed by 25%, the time until which the compression stress comes to be 50% of the initial compression stress at the start of the test, the compression stress after 30 minutes from the start of the test, is 300 hours or more.

Abstract: A crosslinkable rubber composition includes a carboxyl group-containing nitrile rubber (A); a carboxyl group-containing acrylic rubber (B); and a polyamine-based crosslinking agent (C), where a ratio of a weight of the carboxyl group-containing nitrile rubber (A) to a weight of the carboxyl group-containing acrylic rubber (B) is from 5:95 to 95:5. The carboxyl group-containing nitrile rubber (A) includes 5 to 60% by weight of ?,?-ethylenically unsaturated nitrile monomer units, and ?,?-ethylenically unsaturated monocarboxylic acid ester monomer units. The carboxyl group-containing nitrile rubber (A) has an iodine value of 120 or less.

Abstract: A crosslinkable rubber composition includes a carboxyl group-containing highly saturated nitrile copolymer rubber, and silica treated with silicone oil.

Abstract: A nitrile rubber composition comprising a carboxyl group-containing highly saturated nitrile rubber containing ?,?-ethylenically unsaturated nitrile monomer units in a ratio of 5 to 60 wt % and having an iodine value of 120 or less, a filler, and a polyamine-based cross-linking agent, wherein a content of the filler is 100 parts by weight or more and less than 200 parts by weight with respect to 100 parts by weight of the carboxyl group-containing highly saturated nitrile rubber. Accordingly a nitrile rubber composition able to give a cross-linked rubber with excellent in original state physical properties, compression set resistance, and sour gasoline resistance and small in tension set is provided.

Abstract: A cross-linked rubber prepared by cross-linking a nitrile rubber composition including: a carboxyl group-containing highly saturated nitrile rubber containing 5 to 60 wt % of an ?,?-ethylenically unsaturated nitrile monomer unit, and an ?,?-ethylenically unsaturated monocarboxylic acid ester monomer unit, and having an iodine value of 120 or less; a surface treated silicate; and a polyamine-based cross-linking agent wherein a content is 0.1 to 20 parts by weight with respect to 100 parts by weight of the carboxyl group-containing highly saturated nitrile rubber, wherein when the rubber is subjected to a compression stress relaxation test wherein it is maintained at 150° C. while being compressed by 25%, the time until which the compression stress comes to be 50% of the initial compression stress at the start of the test, the compression stress after 30 minutes from the start of the test, is 300 hours or more.

Abstract: A nitrile rubber composition including a carboxyl group-containing highly saturated nitrile rubber (a) containing an ?,?-ethylenically unsaturated nitrile monomer unit in a content of 5 to 60 wt % and having an iodine value of 120 or less, a silica (b) having a specific surface area of 70 m2/g or less, and a polyamine-based cross-linking agent (c), wherein a content of the polyamine-based cross-linking agent (c) is 0.1 to 20 parts by weight with respect to 100 parts by weight of the carboxyl group-containing highly saturated nitrile rubber (a).

Abstract: A nitrile rubber composition comprising a carboxyl group-containing highly saturated nitrile rubber containing ?,?-ethylenically unsaturated nitrile monomer units in a ratio of 5 to 60 wt % and having an iodine value of 120 or less, carbon black, and a polyamine-based cross-linking agent, wherein a content of the carbon black is 100 parts by weight or more and less than 200 parts by weight with respect to 100 parts by weight of the carboxyl group-containing highly saturated nitrile rubber. Accordingly a nitrile rubber composition able to give a cross-linked rubber with excellent in original state physical properties, compression set resistance, and sour gasoline resistance and small in tension set is provided.

Abstract: A nitrile rubber composition comprising a carboxyl group-containing highly saturated nitrile rubber containing ?,?-ethylenically unsaturated nitrile monomer units in a ratio of 5 to 60 wt % and having an iodine value of 120 or less, a filler, and a polyamine-based cross-linking agent, wherein a content of the filler is 100 parts by weight or more and less than 200 parts by weight with respect to 100 parts by weight of the carboxyl group-containing highly saturated nitrile rubber. Accordingly a nitrile rubber composition able to give a cross-linked rubber with excellent in original state physical properties, compression set resistance, and sour gasoline resistance and small in tension set is provided.