RO109856B1 - Wood and metal fireproof dye - Google Patents

Abstract

The present invention relates to o fireproof paint for wood and metal that ensures protection of these types of support, against fire. The composition consists of 10 ... 15% of substances that produce a volume in the heat gas, 20-25% phosphoric esters or boron, 4 ... 6% polyhydroxyalcohols, 15 ... 17 % film-forming substances, 23 ... 25% water, 16.5 ... 19.5% inert inorganic substances, 1,5 ... 1,7% chlorinated products, 0,5 ... 0,6% customary additives, 3 ... 5% miscible water solvents.

Description

The present invention relates to a flame retardant paint, for wood and metal, which ensures the fireproofing and therefore the protection against fire, of wood and metal.

The usual fire retardant paints are of two types: paints that delay the spread of the flame, by transforming some components of the paint film, under the action of heat, into the glass substances that isolate the flammable material painted by the flame; paints that delay the spread of the flame, by forming a very large volume foam that isolates the flammable material, painted, from contact with the flame.

In order to increase the fire resistance of wood and metal constructions, a composition is known, for priming and covering the mentioned surfaces, consisting of 6.6 ... 22% methylpolyamide resin, 7.4 ... 17.5% dry resin ureoformaldehyde, 3.5 ... 10% diammonium phosphate, 2.2 ... 5.6% diciandiamide, 0.8 ... 2.5% ethyl silicate, 8.5 ... 21% heptazine, 0 ... 5.0 glass fibers, 0 ... 13.0 melaminoformaldehyde resin, 0 ... 20% butyl alcohol, 0 ... 20.5 ureoformaldehyde aqueous resin, 0 ... 31.5 % ethyl alcohol and O ... 31.5% water (RO 62410).

Also known is a thermosuming composition, for the fire and fire protection of construction materials, consisting of 10 ... 35% ammonium polyphosphate and melamine pyrophosphate, 15 ... 30% semi-active ingredients, solid, chosen from dioxide. titanium, barite, silicon dioxide, starch, talc, pentaerythritis, 2 ... 35% active components, selected from chlorinated paraffin, styrene trioxide, chlorococcus, sodium pentachlorphenolate, 15 ... 35% pelicogenic binders, selected from polyacetate of vinyl, lacquer or enamel based on rubber, 10 ... 45% nitrogenous substances, solvents, corrosion inhibitors, chosen from diciandiamide, alfamethyl cellulose, sodium hexametaphosphate, sodium benzoate, ethylene glycol, thiourea, triethanolamine, ammonia (RO 59118).

These paints have, besides the flame retardant action, more or less pronounced, and disadvantages, like the poor resistance of the film to humidity, its dull and unattractive appearance, the poor stability in the packaging, due to the high content in solid, heavy, and in time fire, forms, in contact with the flame, gaseous, toxic materials.

The flame retardant paint, according to the invention, extends the range of flame retardant compositions, for wood and metal and consists of 10 ... 15% melamine, diciandiamide, urea, urea resin or solid melamine formaldehyde, 20 ... 25% phosphoric or boric esters, chosen of melamine phosphate, ammonium polyphosphate, zinc borate, phosphates of parasubstituted phenols, 4 ... 6% polyol, selected from pentaerythritis, dipentaerythritis, starch, dextrin, trimethylolpropane, bisphenolpropxylate or bisphenol ethoxylate, 15 ... % peliculogenic substances, non-crosslinkable, in the form of aqueous dispersions, with a content of 40% water, which give a film, chosen from resins in aqueous dispersion based on vinyl polyacetate or styrene-acrylate-maleate copolymer, 23 ... 25% water, excluding the water contained in the dispersion of pelicogenic substance, 16.5 ... 19.5% inorganic substances, which do not burn, chosen from titanium dioxide, carbon dioxide, talc, barite, calcite, biox id of silicon, red iron oxide, hydroxide or aluminum oxide, 1.5 ... 1.7% chlorinated products, chosen from trichlorethylphosphate, paraffin or chlorinated diphenyl, sodium pentachlorophenolate, 0.5 ... 0.6 % additives, commonly used in the manufacture of emulsified paints, 3 ... 5% water miscible solvents, chosen from ethylene glycol, diethylene glycol, propylene glycol, propyl alcohol.

By applying the invention, advantages are obtained, which result from the fact that the product provides effective fire protection, stability in the package, easy applicability and drying at room temperature.

Four examples of embodiments of the invention are given below.

In order to make the compositions according to the invention, the components in the order shown in table 1 are introduced in a fast shaking apparatus with blades or propellers or in a ball mill.

4

Table 1

RAW MATERIAL / EXAMPLE 1 2 3 4 1. Diamandiamide 10 - - 2. Melamine or urea - 15 - 10 3. Urea or melamine resin - - 15 - 4. Melamine or substituted phenol phosphate - - 25 - 5. Ammonium phosphate - 20 - - 6. Ammonium polyphosphate 25 - - - 7. Zinc borate - - - 25 8. Pentaerythritis 4 - - - 9. Starch (dextrin) - 6 - - 10. Trimethylolpropane - - 4 - 11. Propoxylated bisphenol (ethoxylate) - - - 5 12. Titanium dioxide 8 7 8 9 13. Aluminum hydroxide - 6 4 - 14. Barite (calcite) 8 4 - - 15. Talc 2 2 4 2 16. Antimony trioxide 0.5 0.5 0.5 0.5 17. Ethylene glycol (propylene glycol) 4 - - - 18. Diethylene glycol 4 - - - 19. Propyl alcohol - - - 4 20. Additives for emulsified paints 0.5 0.6 0.5 0.5 21. Water 25 2. 3 25 25 The mixture is dispersed for 8. . 24 hours, after which it is downloaded and finished, through addition, under continuous energetic mixing, of the following components: 22. Vinyl polyacetate 60% in water 17 - 15 - 23. Styrene-acrylate-maleate copolymer 60% in water - 15 - 17 24. Triclor ethyl phosphate 1.7 - 1.5 - 25. Chlorinated paraffin (diphenyl) - 1.5 - 1.7

Stirring is continued until a homogeneous, powdery (thixotropic) product is obtained, which is easily applied with the brush, roller or spray. For effective protection, apply 1,0 ... 1,2 kg / sq m of wood material and 1,2 ... 1,6 kg / sq m of metal coated with an anti-corrosive primer.

Claims (1)

Claim Fire retardant paint, made of wood and metal, made up of active ingredients, selected from amber trioxide, melamine, urea, 5 diciandiamide, ammonium polyphosphate, polyhydroxyalcohols, chlorinated derivatives and inactive or semi-active ingredients, chosen from titanium dioxide, talc, bar calcite, silicon dioxide, hydroxide or oxide of 10 aluminum, aqueous and / or organic solvents, characterized in that it consists of 10 ... 15% melamine, diciandiamide, urea, urea resin or solid melamine, formaldehyde, 20 ... 25% phosphoric or boric esters, 15 selected from melamine phosphate, ammonium polyphosphate, zinc borate, phosphates of parasubstituted phenols, 4 ... 6% polyol, selected from pentaerythritis, dipentaerythritis, starch, dextrin, trimethylolpropane, bisphenolpropene, bisphenolpropene. 20 ethoxylates, 15 ... 17% non-crosslinkable film-forming substances, in the form of aqueous dispersions, containing 40% water, which give a film, chosen from r rails in aqueous dispersion, based on vinyl polyacetate or styrene-acrylate-maleate copolymer, 23 ... 25% water, excluding the water contained in the dispersion of pelicogenic substance, 16.5 ... 19.5% inorganic substances, non-burning, selected from titanium dioxide, ammonium trioxide, talc, barite, calcite, silicon dioxide, red iron oxide, hydroxide or aluminum oxide, 1.5 ... 1.7% chlorinated products, chosen from trichlorethylphosphate, paraffin or chlorinated diphenyl, sodium pentachlorophenolate, 0.5 ... 0.6% additives commonly used in the manufacture of emulsified paints, 3 ... 5% water-miscible solvents selected from ethylene glycol, diethylene glycol, propylene glycol, propyl alcohol .