Fixation process for heat-fixable preservative treated wood

Details Fixation process for heat-fixable preservative treated wood Fixation process for heat-fixable preservative treated wood

1996-02-29

1997-07-29

Bell, Janyce

Coating processes

Vacuum utilized prior to or during coating

Organic base

427298, 427335, 427345, 427381, B05D 300

Patent

active

056520239

ABSTRACT:
An improved process for the fixation of preservatives in wood is disclosed which initiates the fixation process in the fixation vessel by the application of sufficient pressure to substantially obviate a thermal expansion effect of the treated wood; contacts the treated wood in the fixation vessel with an aqueous liquid heating medium preheated to a temperature of about 130.degree. to no more than about 200.degree. F. for a period of thirty minutes to about two hours; removes the aqueous liquid heating medium from the fixation vessel; applies a vacuum in the range of 10-30" Hg for a duration of up to about 30 minutes; and rinses the treated and fixed wood in said fixation vessel with heated clean water, heated to a temperature of about 200.degree. F.

REFERENCES:
patent: 4303705 (1981-12-01), Kelso, Jr.
patent: 4364976 (1982-12-01), Prokofievna et al.
patent: 4927672 (1990-05-01), Drinkard, Jr.
patent: 4942064 (1990-07-01), Brayman et al.
patent: 5080935 (1992-01-01), Kelso et al.
patent: 5395656 (1995-03-01), Liang
Zahora et al. (1993) Am Wood-Preservers' Asso. pp. 147-166 (no mo.).
Anderson, D.G. (1990) Am Wood-Preservers' Asso. pp. 129-151 (no mo.).

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