abstract |
The present invention relates to a stabilizing composition for polymeric materials such as polyurethane comprising: a) a mono- or diphosphite or a mono- or diphosphonite, b) a chroman derivative, and c) a stabilizer against the effects of light selected from i) a polysiloxane containing a stabilizing group against the effects of light of a sterically hindered amine, and or ii) the combination of an oxanilide and a stabilizer against the effects of light of the amine series sterically hindered. |