FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing rigid polyurethane foams, as well as use of a mixture of foaming agents for obtaining rigid polyurethane foams. Method involves reacting a) at least one organic polyisocyanate with b) at least one polyol component in presence of a mixture of foaming agents, containing water and halogenated alkenes, wherein amount of water is at least 1.80 mol/kg of polyol component b), and amount of halogenated alkene is not more than 2.00 mol/kg of polyol component b).
EFFECT: technical result consists in improvement of adhesion and reduced thermal conductivity of corresponding rigid polyurethane foams.
9 cl, 2 tbl, 10 ex
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