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US 5,350,793 AGranted
Damping material
AssigneesToda Kogyo Corporation, Hirotani Co., Ltd.
InventorsAtsunori Kishimoto, Takashi Fujii, deceased, Kazutaka Ohshita, Kazumi Yamamoto, Yasuhiko Fujii, Tetsuro Toda
Life of this patent
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Abstract
Disclosed herein is a damping material comprising: (a) a binder composed of 100 parts by weight of an ethylene-vinyl acetate copolymer containing 30 to 65 wt % of vinyl acetate, and 160 to 330 parts by weight of a petroleum resin containing an aromatic petroleum resin as the main ingredient; and (b) 30 to 180 parts by weight of a filler composed of a scaly powder.
Claims12
a damping material comprising:
- (a) a binder composed of 100 parts by weight of an ethylene-vinyl acetate copolymer containing 30 to 65 wt % of vinyl acetate and 160 to 330 parts by weight of a petroleum resin containing an aromatic petroleum resin as the main ingredient based on 100 parts by weight of an ethylene-vinyl acetate copolymer;
- and
- (b) 30 to 180 parts by weight of a filler composed of a scaly powder based on 100 parts by weight of said binder.
Dependencies are inferred from the claim text.