Gaseous or vapor phase treatment of wood with boron preservative

Details Gaseous or vapor phase treatment of wood with boron preservative Gaseous or vapor phase treatment of wood with boron preservative

1988-06-23

1991-06-18

Morgenstern, Norman

Coating processes

Coating by vapor, gas, or smoke

Wood base

4272551, 4272552, 4272553, 427314, 427317, 427325, 427377, 427393, 4273933, 427397, C23C 1628, B05D 302, B05D 304

Patent

active

050248618

ABSTRACT:
The invention comprises a process for the preservation of timber with a boron based compound, such as trimethyl borate. The timer is dried to a low moisture content, is then subjected to a vapor of the boron compound in a suitable treatment vessel, and after vapor treatment is steam conditioned to return the moisture content of the timber to a normal working level. The vapor treatment is preferably carried out under heat and reduced pressure. Timber preserved by the process is also claimed.

REFERENCES:
patent: 374208 (1887-12-01), Sewall
patent: 2633429 (1953-03-01), Hudson
patent: 2655454 (1953-10-01), Farber et al.
patent: 3342629 (1967-09-01), Martin
patent: 3438847 (1969-04-01), Chase
patent: 4303726 (1981-12-01), Turner
patent: 4354316 (1982-10-01), Schroeder
patent: 4373010 (1983-02-01), Oberley
patent: 4413023 (1983-11-01), Chow
patent: 4620990 (1986-11-01), Dicker
Vinden, "Options For Accelerated Boron Treatment: A Practical Review of Alternatives", pp. 16-21 (May 1985).

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