VIBRATION-AND-NOISE ABSORBING ACOUSTIC-INSULATION MATERIAL Russian patent published in 2008 - IPC C08L95/00 C08K3/26 B60R13/08 

FIELD: construction industry.

SUBSTANCE: vibration-and-noise absorbing acoustic-insulation materials are produced on the basis of bituminous compositions and are meant for use in automobile construction industry. Vibration-and-noise absorbing acoustic-insulation sheet material is made from composition based on bitumen, rubber and filler. Synthetic butadiene-styrene rubber is used as rubber, and chalk is used as filler. In addition vibration-and-noise absorbing acoustic-insulation sheet material includes ethylene-vinyl acetate copolymer, dibutyl phthalate and off-grade basaltic wool. Material components ratio is as follows, wt %: oil bitumen - 17.0-23.0, synthetic butadiene-styrene rubber - 8.0-10.0, ethylene-vinyl acetate copolymer - 1.0-2.0, dibutyl phthalate - 1.0, chalk - 60.0-65.0, and off-grade basaltic wool - 5.0-10.0.

EFFECT: effective decrease of engineering constructions vibrations and engine noise at the compartment of transport means.

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