Sound deadening material

Details Sound deadening material Sound deadening material

1981-07-27

1983-01-04

Cockeram, H. S.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428242, 428283, 428339, 521123, 521137, 521905, 524423, 524425, 524439, 524916, 524871, 525455, 528 55, 528 57, 528904, 181293, C08G 1848, C08L 600, B32B 516

Patent

active

043672590

ABSTRACT:
A sound deadening material is obtained with a very high loading of sound damping materials such as barium sulfate, calcium carbonate or metal powders. These materials are mixed with water and are bound together by adding a water-miscible isocyanate-terminated prepolymer which reacts with the water to form a cross-linked binder.

REFERENCES:
patent: 3652360 (1972-03-01), Hartman et al.
patent: 3897372 (1975-07-01), Kehr et al.
patent: 4010818 (1977-03-01), Westley
patent: 4061618 (1977-12-01), Stanley et al.
patent: 4066578 (1978-01-01), Murch et al.
patent: 4110510 (1978-08-01), Oliveira
patent: 4158087 (1979-06-01), Wood
patent: 4191798 (1980-03-01), Schumacher et al.
patent: 4241537 (1980-12-01), Wood
patent: 4246146 (1981-01-01), Wood et al.

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