POLYOL COMPOSITION FOR PRODUCING RIGID FOAMED POLYURETHANE FOR HEAT INSULATION PURPOSES Russian patent published in 2025 - IPC C08K5/17 C08L71/08 C08K5/52 C08K5/3462 C08G18/48 C08J9/04 

FIELD: chemistry.

SUBSTANCE: invention relates to the chemistry of rigid polyurethane foams. Disclosed is a polyol composition for producing rigid foamed polyurethane for heat insulation purposes, containing: 10.0-30.0 wt.% of amino polyol, 13.0-56.0 wt.% polyether based on propylene oxide and glycerol with hydroxyl number 430-480 mg KOH/g, 20.0-30.0 wt.% of saccharose polyester, a product of oxypropylation of a mixture of sucrose and water with hydroxyl number of 480-520 mg KOH/g, 10.0-20.0 wt.% antipyrene additive – tri-(β-chloroethyl) phosphate, 1.0-2.0 wt.% of a foam regulator, 0.5-2.0 wt.% of a catalyst, a product consisting of 33 wt.% triethylenediamine and 67 wt.% dipropylene glycol, and 2.0-3.0 wt.% water.

EFFECT: invention provides low coefficient of heat conductivity and high heat resistance and compression strength of rigid polyurethane foam.

1 cl, 1 dwg, 2 tbl, 5 ex