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Abstract

Complexes of sulfited tannin extract and a copper(II) ion effectively protect wood against fungal attack. The complex can be impregnated into wood in a single step treatment using a water/organic solvent system, or formed in situ by treating the wood with an aqueous solution containing the extract and subsequently treating the wood with an aqueous solution containing a copper (II) salt.

Patent Number

4,988,545

Assignee

Board of Control of Michigan Technological University, Houghton, Mich.

Application Number

394,802

Date Filed

8-17-1989

Certificate of Correction

No

Issue Date

1-29-1991

Disciplines

Chemical Engineering | Engineering

Method for treating wood against fungal attack

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