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AssigneeMitsui Chemicals, Inc.
InventorsTakanori Sueda, Naoto Yasaka, Chong-Sun Yoo, Jeong-Sik Yoon, Kyung-Man Choi, Kwon-Ik Lee
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A crosslinked olefin elastomer foam has a specific gravity of 0.05 to 0.2, an expansion ratio of 8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm. The crosslinked foam is obtained by heating an elastomer composition comprising a specific ethylene/α-olefin copolymer, an organic peroxide, a crosslinking auxiliary and a foaming agent. The crosslinked foam has a high expansion ratio, is free from surface roughening attributed to defoaming, realizes a soft touch, exhibits a low compression set and is excellent in mechanical strength (particularly tear strength) and heat resistance.
A crosslinked olefin elastomer foam having a specific gravity of 0.05 to 0.2, an expansion ratio of 10.5 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm.
A crosslinked olefin elastomer foam having a specific gravity of 0.05 to 0.2, an expansion ratio of 9.8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm, comprising an ethylene/α-olefin compolymer.
A crosslinked olefin elastomer foam having a specific gravity of 0.05 to 0.2, an expansion ratio of 8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm, comprising an olefin elastomer, which comprises 50 to 100 parts by weight, based on 100 parts by weight of the olefin elastomer, of an ethylene/α-olefin copolymer.
A crosslinked olefin elastomer foam having a specific gravity of 0.05 to 0.2, an expansion ratio of 8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm prepared from an olefin elastomer, which comprises 50 to 95 parts by weight, based on 100 parts by weight of the olefin elastomer, of an ethylene/α-olefin copolymer.
A crosslinked olefin elastomer foam having a specific gravity of 0.05 to 0.2, an expansion ratio of 8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm prepared from an olefin elastomer, which comprises 70 to 98 parts by weight, based on 100 parts by weight of the olefin elastomer, of an ethylene/α-olefin copolymer.
A crosslinked olefin elastomer foam having a specific gravity of 0.01 to 0.2, a compression set of 20 to 60% and a tear strength of 2.0 to 4.0 kg/cm, comprising an olefin elastomer, which comprises 50 to 100 parts by weight, based on 100 parts by weight of the olefin elastomer, of an ethylene/α-olefin copolymer.
A crosslinked olefin elastomer foam having a specific gravity of 0.01 to 0.2, a compression set of 20 to 60% and a tear strength of 2.0 to 4.0 kg/cm, comprising an olefin elastomer, which comprises 50 to 95 parts by weight, based on 100 parts by weight of the olefin elastomer, of an ethylene/α-olefin copolymer.
Dependencies are inferred from the claim text.