Patent · US Expired

Method for preserving wood and preserved wood obtained in accordance with the method

US6652986B2 · kind B2 · utility

3Cited by

4References

5Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Rüdiger Peldszus · Hasselroth, DE
Egon Walzer · Maintal, DE
Martin Bauer · Birkenfeld, DE
Norbert Steiner · Alzenau, DE
Michael Del Grosso

Key dates

Filing date	Mar 1, 2001
Grant date	Nov 25, 2003
Priority date	—
Expiry date	May 17, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/662
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method for preserving wood that includes impregnating the wood with a wood preservative agent based on one or more compounds of at least one metal of the 1st and/or 2nd subgroups of the periodic system and fixing the metal(s) for purposes of reducing the danger of leaching. The wood is (i) impregnated with a preservative containing a water-soluble zinc compound or (ii) wood that has already been impregnated with a zinc-free preservative or one that contains at least one metal compound of the 1st and/or 2nd subgroups is impregnated with a second preservative that contains at least one water-soluble zinc compound, and wood impregnated in accordance with (i) or (ii) is impregnated with an aqueous solution of a salt of trimercapto-s-triazine (TMT), dithiocarbamate or trithiocarbonate.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.