Patent · US Expired

Accelerated fixing of chromate-containing wood preservative salts

US4716054A · kind A · utility

4Cited by

4References

3Claims

0Family size

Assignee

BASF SE

Inventors

Richard Stanek · Ingelheim am Rhein, DE
Hans-Norbert Marx · Bühl, DE
Wendelin Hettler · Baden-Baden, DE
CLAUS FLORIAN WAGNER · Dresden, DE

Key dates

Filing date	Mar 12, 1986
Grant date	Dec 29, 1987
Priority date	—
Expiry date	Mar 12, 2006

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB27K5/04
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

Accelerated fixing of chromate-containing wood preservative salts, in which freshly impregnated timbers are subjected to fixing with superheated steam, is carried out by a process wherein the freshly impregnated timbers are subjected beforehand to a heat treatment in which both the wood surface and the internal walls of the heating chamber are heated to 60.degree.-100.degree. C., preferably 80.degree.-95.degree. C., and the timbers are then treated with superheated steam in a conventional manner.

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