CS195528B1 - Water-soluble impregnating agent,preventing wood from burning - Google Patents

Description

SOCIALISTIC AND DESCRIPTION OF THE INVENTION

"‘ ”<’ ·> ‘TO U, 195528 U '(11) (Bl)

(51) lnt. ClAC 09 K 3/28 / 22 / Registered 23 09 77/21 / / PV 6166-77 / (Lili Published 31 05 7 9

OFFICE OFFICE (45) Published 1 5 05 82

AND DISCOVERY (75)

Author of the invention FILÁK MIREK ing ,, BRATISLAVA, NOVÁK MAREK, HORNÉ OREŠANY,

ŠEVČÍK MILOŠ, ZAVAŘ, (JRGE DIONÝZ, ŠTflROVO and MACHÁČEK JAROSLAV, MALACKY • Z **) · (54) Water-soluble impregnating agent

BACKGROUND OF THE INVENTION The present invention relates to a water-soluble, water-resistant impregnating agent.

Many of the currently used wood-burning impregnating agents which can be used in conjunction with wood, as a result of which impregnated wood products, mine reinforcement, solid and structural material, become flame retardant over a longer period of time. Some of the impregnating agents decompose at higher temperatures to form stifling gaseous fumes, which are harmful to toxic. The water-glass impregnating agents prevent their high viscosity from penetrating into the wood, and remain on the surface of the wood products, from which they are easy to mechanically separate, so that they do not fulfill their floods. Wood impregnated with thinnings by means of the fabric becomes flammable, therefore its impregnation in shorter time intervals is required by the tanner. Another drawback of said impregnating agents is that the wood in the wet environment is subject to microbial decomposition, impregnating agents in contact with water form efflorescence on the wood surface, which is a major disadvantage in the manufacture of furniture products.

These drawbacks are substantially eliminated by the water-soluble impregnating agent which prevents the wood from burning according to the invention, the principle of which consists of 1 to 10% by weight of wood. horizontally from the compounds IV. % analytical grade, 1 to 5% by weight of water-soluble zinc salts 1 to 15% by weight. alkaline fluoride salts. The advantages of the impregnating agent according to the invention are, among other things, that it is water-soluble, does not leach with water, prevents the wood from burning, has antimycoid properties, the colloidal precipitate that forms inside the wood does not decompose at higher temperatures and does not release toxic and suffocating gases. Example 1 57, aqueous calcium formate solution, 2% aqueous zinc acetate solution, 3%? the aqueous sodium fluoride solution is mixed in a 1: 1: 1 ratio.

The solution thus prepared is used to impregnate the wood by dipping, coating, optionally pressure or vacuum. Example 2

Solution I 80 liters of water 4 kg of calcium acetate 2 kg of zinc acetate

Solution II 20 liters of water 4 kg of potassium fluoride

After complete dissolution and cooling to 20 ° C, solution II is added to solution I, and the impregnating agent is used by mutual mixing. The wood impregnated with the impregnating agent according to the invention was, after drying, subjected to a non-flammability test by exposing it to the flame at a temperature of 500 to 600 ° C without being burnt. 195528

Claims (1)

Water-soluble impregnating agent, grades 1 to 5 wt. fire retardant wood, characterized by zinc and 1 to 15 wt.%, consisting of 1 to 10 wt. % of fluorides, calculated on the water-soluble compounds of the fourth analytical solution.