Impregnation composition for thermochemical modification of wood and process for preparing same

An impregnation composition for a thermochemical modification of wood comprising a balanced aqueous-alcoholic solution and having the following chemical formulation, parts by mass: -water-soluble oil-shale crude phenols 100 -urea 28-36 -formaldehyde 35-40 -ammonia 13-15 -ethylene glycol, its homolog...

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Bibliographische Detailangaben
Hauptverfasser:	SJULD, TIYA-MAYA F, RIISTOP, MYART A, EVERT, ILMAR M, KAPS, TIIT K, PRAVON, JURI E, ROKK, JURI K, KRISTIANSON, PEEP G, KIISLER, KARL R, MATVERE, TOOMAS O
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY NAILING OR STAPLING MACHINES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS 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 THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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Beschreibung
Zusammenfassung:	An impregnation composition for a thermochemical modification of wood comprising a balanced aqueous-alcoholic solution and having the following chemical formulation, parts by mass: -water-soluble oil-shale crude phenols 100 -urea 28-36 -formaldehyde 35-40 -ammonia 13-15 -ethylene glycol, its homolog or glycerol 3-10 -ethanol 5-1,750 -water 100-3,370. - A process for preparing an impregnation composition consists in that a mixture of 100 parts by mass of said water-soluble oil-shale crude phenols, 28-36 parts by mass of urea, 3-10 parts by mass of ethylene glycol, a homolog thereof or glycerol, 6-1,025 parts by mass of ethanol and 3-1,492 parts by mass of water is heated at a temperature of from 60 DEG to 95 DEG C. to give an aqueous-alcoholic solution A; a mixture of 95-107 parts by mass of 37% aqueous solution of formaldehyde, 54-62 parts by mass of a 24% aqueous solution of ammonia, 1-725 parts by mass of ethanol and 1-1,764 parts by mass of water is maintained at 20 DEG -60 DEG C. to give a solution B; solutions A and B are mixed in the mass ratio of 1:1.