Sound reproduction compositions

Details Sound reproduction compositions Sound reproduction compositions

1974-05-13

1976-08-17

Derrington, James H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 23XA, 260 318R, 260 4249, 260897C, 260 4575R, 260 4575K, 260 4575V, 260 4575W, 26099816, 526329, 526345, C08F21406, C08K 310, C08L 9100

Patent

active

039753212

ABSTRACT:
Novel sound reproduction molding compositions of good processing qualities are disclosed, based on copolymer of vinyl chloride and propylene. Records obtained therefrom, have good audio qualities and resistance to impact, thermal warpage and water blistering. Because of their high heat stability, formulations based on the vinyl chloride-propylene (VC/P) copolymers can be employed in making sound records not only by the usual compression molding techniques, but also by injection molding.

REFERENCES:
patent: 3468858 (1969-09-01), Heiberger et al.

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