Acoustic vibration sheet and polypropylene composition for the s

Details Acoustic vibration sheet and polypropylene composition for the s Acoustic vibration sheet and polypropylene composition for the s

1987-02-12

1988-08-02

Lilling, Herbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524 13, 524449, 524451, 524496, 525 98, C08K 304, C08K 334, C08L 900, C08L 5302

Patent

active

047614510

ABSTRACT:
A polypropylene based composition for an acoustic vibration sheet having superior acoustic adhesion and high-impact properties to those of conventional products, and an acoustic vibration sheet prepared from the composition are provided; the composition is obtained by blending 100 parts by weight of a polypropylene having a crystallinity of 0.94 or more and a Q value of 10 or more with 1 to 15 parts by weight of a thermoplastic styrene block copolymer rubber, and if necessary, further blending 10 to 40 parts by weight of a filler with the above-mentioned two components.

REFERENCES:
patent: 4464439 (1984-08-01), Castelein
patent: 4499238 (1985-02-01), Iwata et al.
patent: 4582871 (1986-04-01), Noro et al.
patent: 4604421 (1986-08-01), Mitsuno et al.

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