Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1980-08-29
1981-08-25
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428268, 428333, 428339, 428340, 428367, 428402, 428406, 428447, 428921, B32B 700
Patent
active
042860130
ABSTRACT:
This invention relates to devices for preventing the spread of flame (i.e., flame barriers).
The invention comprises a sheet having a backing bearing a coating of 50 to 70 weight % diorganopolysiloxane gum, 1 to 10 weight % fibrous filler, 20 to 45 weight % hollow glass microspheres, and 1 to 5 parts by weight curing agent per 100 parts by weight of said gum. The sheet (i) is substantially free from components volatilizing below 350.degree.C., and (ii) has a weight of at most 0.6 g/cm.sup.2. Preferably the coating is applied in a multilayer fashion.
The present invention is a light-weight, non-intumescing sheet useful as a flame barrier between fuel tanks or engines and passenger or cargo compartments of mass transportation vehicles.
REFERENCES:
patent: 2643964 (1953-06-01), Johannaen
patent: 2684349 (1954-07-01), Whelton
patent: 4152481 (1979-05-01), Swihart
Daroga Minoo J.
Jones Robert E.
Alexander Cruzan
Bell James J.
Lilly James V.
Minnesota & Mining Manufacturing Company
Sell Donald M.
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