Flame retardant cellulosic boards

Details Flame retardant cellulosic boards Flame retardant cellulosic boards

1977-03-24

1978-02-28

Fisher, Richard V.

Paper making and fiber liberation

Processes and products

Non-fiber additive

106 15FP, 162181A, 162181B, 264122, 428328, 428329, 428330, 428921, D21D 300

Patent

active

040765806

ABSTRACT:
Cellulosic boards, such as hardboards, fiberboards and particle-boards, are flame retarded by incorporation of a synergistically acting alumina trihydrate-ulexite composition in the boards. The alumina trihydrate-ulexite flame-retarding agent provides a board of satisfactory strength properties with a flame spread at least equivalent to that of a commercial Class I-rated hardboard when the loading of the flame-retarding agent in the board is kept at 50% or below of the total weight of the flame-retarded board.

REFERENCES:
patent: 1907711 (1933-05-01), Becher
patent: 3202570 (1965-08-01), Videen
patent: 3865760 (1975-02-01), Pitts et al.
patent: 3897387 (1975-07-01), O'Shaughnessy
patent: 4032393 (1977-06-01), Alfeis et al.

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