Processes for extracting fungi-toxic material from wood material

Details Processes for extracting fungi-toxic material from wood material Processes for extracting fungi-toxic material from wood material

1985-08-30

1987-02-24

Lusignan, Michael R.

Compositions: coating or plastic

Coating or plastic compositions

Contains fireproofing or biocidal agent

427440, 428541, 428907, B05D 118, C09D 514

Patent

active

046455361

ABSTRACT:
Disclosed is process for extracting fungi-toxic material from wood material of a species of wood which is resistant to fungi-growth. The process comprises providing a first quantity of the wood material, contacting said quantity with an extraction agent in an amount and for a time sufficient to extract essentially all fungi-toxic material in the wood material, separating the agent containing the fungi-toxic material from the wood material, contacting a second quantity of wood material with the separated extraction agent for a time sufficient to extract fungi-toxic material contained in the second quantity of wood material, and separating the extraction agent from the second quantity of wood material.

REFERENCES:
patent: 4413023 (1983-11-01), Chow
The Chemistry and Utilization of Western Red Cedar, G. M. Barton and B. F. MacDonald, Dept. of Fisheries and Forestry, Can. Forestry Service Publication No. 1012 (1971).
Extractivities of Eastern White Cedar Heartwood, N. Levitim and G. Besserer, Dept. of Forestry Project #0-186-10, Oct. 1985.
The Cause of Natural Durability in Timber, P. Rudman, Holzforschung, 16(3) 1962, pp. 74-77.
Antiobiotic Substances from the Heart Wood of Thuja Plicata D. Don, Jarl Gripenberg, Acta Chemica Scandinavia, 2(1984), 639-643.
Toxicity Tests of a New Tropolone, .beta.-Thujaplicinol Occurring in Western Red Cedar, J. W. Roff and E. I. Whittaker, Canadian Journal of Botany, vol. 37, (1959) 1132-1133.
The Chemical Nature of the Acetone Extractive of Western Red Cedar, G. M. Barton and J. A. F. Gardner, Pulp and Paper Magazine of Canada, 55(10)1954.
Analytical Method for Thujaplicin, J. MacLean and J. Gardner, 1956, Acta Chemica Scandinavia, 28:589-512.
Distribution of Fugicidal Extractives in Western Red Cedar Heartwood, H. MacLean and J. Gardner, Forest Products Journal, Dec. 1956, 510-516.
Pulp and Chemical Potential for Western Red Cedar Utilization, J. D. Wethern, Forest Products Journal, Sep. 1959.
Toxicity Tests of Water-Soluble Phenolic Fraction of Western Red Cedar, J. W. Roff and J. M. Atkinson, Canadian Journal of Botany, vol. 32 (1954).
Weathering Effect on Thujaplicin Concentration in Western Red Cedar Shakes, Eric Johnson & A. J. Cserjesi, Forest Products Journal, vol. 30, No. 6, pp. 52-53.
Utilizing Residue From Western Red Cedar Mills, C. F. McBride Forest Products Journal, Sep. 1959, pp. 313-316.
Antibacterial Activity of .beta.-Thujaplicin, T. J. Trust and R. W. Coombs, Canadian Journal of Microbiology, 1973, 19, 11, pp. 1341-1346+1 PL.

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