Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1991-01-28
1992-02-18
Bell, Janyce
Coating processes
With post-treatment of coating or coating material
Heating or drying
427343, 427297, 427440, B05D 304
Patent
active
050893025
ABSTRACT:
This invention is directed to a process for accelerating the fixation of chromated-copper-arsenate (CCA) preservative in wooden articles. The invention particularly pertains to a process of fixing CCA in softwoods such as lodgepole pine, so that it does not leach. A process of fixing chromated-preservatives in freshly treated wood by applying moderate heat to the treated wood while initially maintaining the treated wood in a highly humid or saturated atmosphere, and subsequently maintaining the atmosphere about the freshly treated wood at a controlled equilibrium moisture content level.
REFERENCES:
patent: 4017980 (1977-04-01), Kleinguenther
patent: 4325993 (1982-04-01), Schroder
patent: 4716054 (1987-12-01), Stanek et al.
"Fundamentals on Steam Fixation of Chromated Wood Preservatives", by R. D. Peek et al., presented at Nineteen Annual Meeting of the International Research Group on Wood Preservation, Madrid, Spain, Apr. 24-29, 1988.
Eaton George H.
Ruddick John N. R.
Whiting Douglas B.
Bell Janyce
Bell Pole Co. Ltd.
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