| abstract |
A compopund containing one or more units of formula I <IMAGE> (I) in which R1 is -CH2C1-4alkyl or -CH3 or both groups R1 form -(CH2)5-; R2 is -CH2C1-4alkyl or -CH3 or both groups R2 form -(CH2)5-; R3 is furylmethyl, unsubstituted C1-18alkyl; C1-4alkyl monosubstituted by phenyl, the phenyl group of which is unsubstituted or substituted by 1 to 3 groups selected from -OH and C1-8alkyl; C2-8alkyl monosubstituted by C1-4alkoxy; phenyl, unsubstituted or substituted by 1 to 3 groups selected from C1-8alkyl and -OH; or cyclohexy, unsubstituted or monosubstituted by C1-8alkyl or -OH. These compounds are useful as light stabilizers for polymeric material. |