Intumescent sheet

Details Intumescent sheet Intumescent sheet

1992-11-17

1995-01-24

Withers, James D.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

252606, 428288, 428703, 428913, 428920, 428921, B32B 516, C09K 2100

Patent

active

053841883

ABSTRACT:
A flexible, resilient, intumescent mat material comprising fiber, binder, and an intumescent agent which includes a mixture of unexpanded vermiculite and expandable graphite undergoes intumescence at a lower temperature, with an enhanced degree of expansion and with a lesser degree of contraction upon prolonged heating. The intumescent mat can be employed in catalytic converters for motor vehicles and as a firestop material.

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patent: 5132054 (1992-07-01), Stahl
patent: 5258216 (1993-11-01), von Bonin et al.
U.S. Ser. No. 7/977,390, Nov. 17, 1992, A. R. Lebold, et al.

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