Mixture for stabilizing polyurethanes

摘要

A mixture for stabilizing polyurethanes contains (a) an amine of the formula I <IMAGE> (I) (b) a mixture of the benzotriazoles II and III <IMAGE> (II) <IMAGE> (III) <IMAGE> in which n is chosen so that the mean molecular weight of the mixture is greater than 600, and (c) alpha -tocopherol, if necessary mixed with tris-(nonylphenyl) phosphite, and polyurethanes contain from 0.005 to 5.0% by weight, based on the material to be stabilized, of this mixture.