Method for rendering wood resistant to fire

Details Method for rendering wood resistant to fire Method for rendering wood resistant to fire

1973-12-07

1976-01-27

Gwinnell, Harry J.

Coating processes

With pretreatment of the base

Heating or drying pretreatment

427342, 427382, 427393, B05D 302

Patent

active

039353419

ABSTRACT:
Wood can be rendered fire resistant by impregnating the wood with a solution of a monomer, such as a phenol, and a fire-inhibiting salt, drying the wood and thereafter treating the wood with a solution of a second monomer, such as formaldehyde, polymerizable with the first monomer. Heating to dryness causes polymerization of the monomers. The fire resistant properties of wood treated this way are not affected by exposure to moisture. Prior to the first impregnation, after the first impregnation and after treatment with the second monomer the wood being treated is dried to a moisture content below about 4%.

REFERENCES:
patent: 949671 (1910-02-01), Baekeland
patent: 2123152 (1938-07-01), Rivat
patent: 2632742 (1953-03-01), Eckert
patent: 2661341 (1953-12-01), Nason et al.
patent: 3062678 (1962-11-01), McCluer
patent: 3243140 (1966-03-01), Bliven et al.
patent: 3320213 (1967-05-01), Smith
patent: 3336959 (1967-08-01), Parks
patent: 3519476 (1970-07-01), Bremmer et al.
patent: 3547687 (1970-12-01), Lewin
patent: 3701743 (1972-10-01), Horowitz et al.

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