Process for chemically hardening wood

Details Process for chemically hardening wood Process for chemically hardening wood

1991-12-26

1993-02-23

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With non-fiber material added to product

162 13, 162 72, 162 77, 204 79, 204132, 264 83, 264343, D21J 112

Patent

active

051887070

ABSTRACT:
A method of hardening wood using a pulping agent for the chemical separation of lignin from cellulose in the wood without damage to either component. The pulping agent comprises the reaction product of (a) a compound produced by electrolytic oxidation of a predetermined amount of a loweralkanolamine in aqueous solution and neutralized with a strong mineral acid, with (b) the loweralkanolamine used in excess relative to the predetermined amount of loweralkanolamine subjected to the electrolytic oxidation. Also disclosed are processes utilizing such a pulping agent for chemically debarking whole logs as well as for converting soft wood into hard wood.

REFERENCES:
patent: 1123166 (1914-12-01), Burton
patent: 2037001 (1936-04-01), Aronovsky
patent: 3699202 (1972-10-01), Verbestel
patent: 4594130 (1986-06-01), Chang et al.
patent: 4622100 (1986-11-01), Godsay et al.
patent: 4923656 (1990-05-01), Held
Wise et al "The Effect of Ethanolamine on Woody Tissue" Analytical Edition, Jan. 15, 1939.

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