Process for the preservation of wood

Details Process for the preservation of wood Process for the preservation of wood

1974-07-12

1976-07-06

Lusignan, Michael R.

Coating processes

Vacuum utilized prior to or during coating

Organic base

21 7, 427325, 427440, B05D 300, B05D 118

Patent

active

039682765

ABSTRACT:
A process for the treatment of wood of all kinds to impregnate the wood fully to its core with a resin component system, simultaneously with, or without, a flame retarding agent, or preservative, the process involving enclosing the wood in a chamber, evacuating the chamber in which it is enclosed in a slow time cycle, related to the structure of the wood, while adding a prepolymer aqueous solution to submerge the wood, continuing the vacuum, securing the vacuum, and applying pressure of prepolymer solution until the wood reaches the refusal point and, in certain more dense woods, repeating the vacuum and pressure cycle; then completely purging the chemicals, evacuating the chamber and drawing a final vacuum on the wood for removal of surface liquid, and finally removing wood from the chamber.

REFERENCES:
patent: 2140981 (1938-12-01), Booty et al.
patent: 2352740 (1944-07-01), Shannon
patent: 2591768 (1952-04-01), Austin
patent: 2652347 (1953-09-01), Hudson
patent: 2668779 (1952-02-01), Herman
patent: 2740728 (1956-04-01), Sonnabend et al.
patent: 2786784 (1957-03-01), Henriksson
patent: 2947648 (1960-08-01), Sonnabend et al.
patent: 3160515 (1964-12-01), Goldstein et al.
patent: 3200003 (1963-08-01), Beicher
patent: 3429733 (1969-02-01), Wolf et al.
patent: 3677805 (1972-07-01), Barnett

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