COMPOSITION FOR MANUFACTURING HEAT-PROTECTIVE COATING AND METHOD OF ITS MANUFACTURE Russian patent published in 2018 - IPC C08L61/14 C08L9/02 C09D161/14 C08K13/02 C08J3/205 

FIELD: chemistry.

SUBSTANCE: composition for manufacturing a heat-protective coating and a method for manufacturing it are described. Composition for manufactureing a heat-protective coating includes components in the following ratio, pts wt: furfural 8.0-12.5, urotropin 0.9 -1.8, phenol-formaldehyde resin of the novolak type 8.0-14.0, butadiene-nitrile rubber SKN-40-KNT in the form of a 20% solution of the dry residue in acetone 28.0-33.0, acetone 4.0-7.0, butyl acetate 4.0-7.0, talc 18.0-23.0, mica 10.0-14.0. The method of obtaining the composition includes pretreatment of furfural, hexamine, phenol-formaldehyde resin of the novolak type into the condensation product by reacting a solution of urotropine in furfural followed by the introduction of phenol-formaldehyde resin and the formation of the binder on their basis. Then a solution of butadiene-nitrile rubber SKN-40-KNT in acetone, solvents and fillers are introduced.

EFFECT: increase of mechanical properties, resistance to oxidation of a semi-finished product, increase and stability of physical properties of the composition during its production, storage, and processing.

3 cl, 2 tbl