METHOD FOR REDUCTION IN ALDEHYDE RELEASE IN POLYURETHANE-CONTAINING MATERIALS Russian patent published in 2022 - IPC C08G18/48 C08G18/28 C08G18/66 C08K5/17 

FIELD: chemistry.

SUBSTANCE: present invention relates to a reaction mixture for the manufacture of polyurethane material, as well as to a method for the production of polyurethane-containing material characterized by reduced aldehyde release. The reaction mixture contains at least one compound that is reactive relatively to isocyanate, at least one aldehyde acceptor compound, which is a compound of the formula R₁-NH-R₂, in which R₁ and R₂ are independently selected from -SO₂R₄, -C(O)R₅, a pyridyl derivative, -CH=CHR₃ or -CN, where R₃ is -SO₂R₄, -C(O)R₅, a pyridyl derivative or -CN, R₄ is OR₉ or R₁₀, R₅ is H, OR₉ or R₁₀, where R₉ or R₁₀ are independently aliphatic hydrocarbon, aromatic hydrocarbon optionally substituted with a substituent selected from a hydroxy group, ether, halogen, carboxyl, isocyanate, nitro and/or amine, R₁ and R₂ can be attached to each other essentially to form a ring structure, namely R₁ and R₂, together with a group -NH-, form a 5-12-element ring structure and contain aromatic rings and/or heteroatoms.

EFFECT: resulting polyurethane materials, such as polyurethane foams, are characterized by a significantly reduced aldehyde release, while mechanical properties of the resulting foam, such as residual deformation during compression and aging characteristics in wet conditions, are not adversely affected.

12 cl, 3 tbl, 9 ex