Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1988-10-07
1989-09-12
Van Balen, William J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
156 79, 156329, 428242, 428246, 428266, 428268, 428273, 4283193, 428447, 428920, 428921, B32B 326
Patent
active
048659070
ABSTRACT:
A fire block sheet is provided comprising a laminate of (a) at least one rigid support layer comprising a cured glas fiber sheet impregnated with fire retardant epoxy resin and (b) an elastomeric cured silicone foam rubber layer containing alumina trihydrate secured to said support layer, said fire block sheet being capable, in a thickness of 1/16 inches, of withstanding flame penetration and preventing backside ignition when exposed at one side to a flame at a temperature of 1000.degree. C. for a period of at least 15 minutes. In a preferred embodiment, the elastomeric cured silicone rubber layer is sandwiched between two rigid support layers.
REFERENCES:
patent: 2703775 (1955-03-01), Panagrossi et al.
patent: 4189545 (1980-02-01), Modic
patent: 4418157 (1983-11-01), Modic
patent: 4760098 (1988-07-01), Miutel
patent: 4806185 (1989-02-01), Porter et al.
Reichhold Chemicals, Inc.-Material Data Sheet (11/04/87) for Product Code 37-624.
Reichhold Chemicals, Inc.-Material Data Sheet (6/84) for EPOTUF.RTM. 37-200.
Reichhold Resin & Binders Division-Product Bulletin (6/84) for EPOTUF.RTM. Epoxy Resin 37-200.
Reichhold Chemical Coatings Division-Product Bulletin (undated) for EPOTUF.RTM. Epoxy Resin Hardener 37-624.
Julis Jeffrey E.
Mercado Malinda S.
Bisco Products Inc.
Van Balen William J.
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