Water soluble wood preservative and its use in pressure and/or vacuum impregnation or immersion processes

• Main Authors: METZNER, WOLFGANG, SEEPE, DETLEF
• Format: Patent
• Language: English; French; German
• Published: 24.10.1990
• Subjects: CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS; NAILING OR STAPLING MACHINES IN GENERAL; PERFORMING OPERATIONS; PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; TRANSPORTING; WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL

Die Erfindung betrifft ein wasserlösliches Holzschutzmittel enthaltend oder bestehend aus Ammoniumchromat und/oder Ammoniumdichromat und/oder Chromsäure und komplexen Fluoriden von Kupfer und/oder Zink. Der Chromgehalt des Holzschutzmittels beträgt 15 bis 28 Gew.-% und das Atomverhältnis von Cu : Zn in dem als komplexe Fluoride eingesetzten Gemisch aus Kupferhexafluorsilikat und Zinkhexafluorsilikat 1 : 0,59 bis 1 : 1,76, vorzugsweise 1 : 0,93 bis 1 : 1,32 im Holzschutzmittel. The invention relates to a water-soluble wood preservative, containing or consisting of ammonium chromate and/or ammonium dichromate and/or chromic acid and complex fluorides of copper and/or zinc. The chromium content of the wood preservative is 15 to 28% by weight and the Cu:Zn atomic ratio in the mixture of copper hexafluosilicate and zinc hexafluosilicate, used as the complex fluorides, is 1:0.59 to 1:1.76, preferably 1:0.93 to 1:1.32 in the wood preservative.