C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
403/75
C08J 9/22 (2006.01) B60R 19/18 (2006.01) B60R 19/22 (2006.01) C08J 9/18 (2006.01) C08J 9/232 (2006.01) C08L 51/06 (2006.01)
Patent
CA 1242300
Abstract ENERGY ABSORBER An energy absorber suitable for use as a bumper core or the like is formed of an expansion-molded article of prefoamed particles. The prefoamed particles use, as the base resin thereof, a resin obtained by impregnating high-density polyethylene with an aromatic vinyl monomer and polymerizing the monomer. The absorber has a density (?) of 0.015 - 0.15 g/cm3 and satisfies the following relation: E20/? ? 45 kg?cm/g wherein E20 (kg?cm/cm3) means the quantity of energy absorbed upon 70% compression at 20°C and ? has the same meaning as defined above. The energy absorber of this invention is excellent in energy absorbing efficiency, impact resistance and heat resistance, is lightweight, and exhibits superb shock-absorbing properties.
500380
Kuwabara Hideki
Naito Masato
Gowling Lafleur Henderson Llp
Japan Styrene Paper Corporation
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