Product containing alumina trihydrate and a source of B.sub.2 O.

Details Product containing alumina trihydrate and a source of B.sub.2 O. Product containing alumina trihydrate and a source of B.sub.2 O.

1977-05-13

1978-12-19

Hayes, Lorenzo B.

Paper making and fiber liberation

Processes and products

Non-fiber additive

106 15FP, 162181A, 162181B, 252 81, 428921, D21H 366

Patent

active

041304586

ABSTRACT:
The ASTM E84 flamespread of fibrous products such as hardboard is reduced by incorporation of a combination of alumina trihydrate and a source of B.sub.2 O.sub.3, such as boric acid. The B.sub.2 O.sub.3 source should be capable of providing B.sub.2 O.sub.3 at a temperature below 400.degree. C.

REFERENCES:
patent: 1907711 (1933-05-01), Becher
patent: 2108761 (1938-02-01), Becher
patent: 2611694 (1952-09-01), Becher
patent: 3245870 (1966-04-01), Orth et al.
patent: 3629055 (1971-12-01), Riem et al.

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