Use of alcohols which contain at least two urethane groups for producing polyether carbonate polyols

Abstract

The present invention relates to a method for producing polyether carbonate polyols by attaching alkyloxides and carbon dioxide to H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as the H-functional starter compound. The invention further relates to polyether carbonate polyols containing a structural unit of the formula (IV), wherein: R1 denotes a linear or branched C2 to C24-alkylene, which optionally can be interrupted by heteroatoms of O, S or N and can be substituted, preferably by CH2—CH2 or CH2—CH(CH3); R2 denotes a linear or branched C2 to C24-alkylene, C3 to C24-cycloalkylene, C4 to C24-alkylene, C5 to C24-aralkylene, C2 to C24-alkenylene, C2 to C24-alkynylene, each of which can optionally be interrupted by heteroatoms such as O, S or N and/or can be substituted with alkyl, aryl and/or hydroxyl groups, preferably C2 to C24-alkyls; R3 denotes H, linear or branched C1 to C24-alkyl, C3 to C24-cycloalkyl, C4 to C24-aryl, C5 to C24-aralkyl, C2 to C24-alkenyl, C2 to C24-alkynyl, each of which can optionally be interrupted by heteroatoms such as O, S or N and/or can each be substituted with alkyl, aryl and/or hydroxyl groups, preferably H; R4 denotes H, a linear of branched C1 to C24-alkyl, C3 to C24-cycloalkyl, C4 to C24-aryl, C5 to C24-aralkyl, C2 to C24-alkenyl, C2 to C24-alkynyl, each of which can optionally be interrupted by heteroatoms such as O, S or N and/or can each be substituted with alkyl, aryl and/or hydroxyl groups, preferably H; R5 denotes a linear or branched C2 to C24-alkylene, which can optionally be interrupted by heteroatoms such as O, S or N and can be substituted, preferably by CH2—CH2 or CH2—CH(CH3); and wherein R1 to R5 can be identical or different to each other.

Dependencies are inferred from the claim text.