| abstract |
(57) Abstract: A crosslinkable rubber composition for a highly foamable foam of the present invention is capable of crosslinking by hot air, and is formed by forming the rubber composition into a sheet and then crosslinking by hot air. The comb sheet showed no scratch on the surface in the pencil hardness test with HB pencil, Compression set after heat treatment at 22 ° C for 22 hours is 70% or less, Specific gravity 0.01-0.5, water absorption 1-500%, Asker C hardness 0.1 ~ 50. The composition comprises a specific ethylene / α-olefin / non-conjugated polyolefin copolymer copolymer, a SiH group-containing compound having two or more SiH groups in one molecule, and, if necessary, a catalyst, a reaction inhibitor, a foaming agent, and the like. It contains. The highly foamed foam of the present invention comprises the above composition. [Effect] The above composition has a high crosslinking rate and excellent productivity, It is possible to provide a cross-linked foamed foam for highly foamed foam, which is capable of hot-air cross-linking of HAV, UHF, etc., and is excellent in properties such as compression set resistance, foaming properties, stain resistance, strength properties, and crosslinking speed. |