| 摘要 |
A stabilizer composition comprising (A) a compound of the formula (I) wherein R is (CH<SUB>2</SUB>-CH<SUB>2</SUB>-O-)<SUB>n</SUB>, -R<SUB>2</SUB>; -CH<SUB>2</SUB>-CH(OH)-CH<SUB>2</SUB>-O-R<SUB>2</SUB>; or -CH(R<SUB>3</SUB>)-CO-O-R<SUB>4</SUB>; n is 0 or 1; R<SUB>2 </SUB>is C<SUB>1</SUB>-C<SUB>13</SUB>alkyl or C2C<SUB>20</SUB>alkenyl or C<SUB>6</SUB>-C<SUB>12</SUB>aryl or CO-C<SUB>1</SUB>-C<SUB>18</SUB>alkyl; R<SUB>3 </SUB>is H or C<SUB>1</SUB>-C<SUB>8 </SUB>alkyl; R<SUB>4 </SUB>is C<SUB>1</SUB>-C<SUB>12</SUB>alkyl or C<SUB>2</SUB>-C<SUB>12</SUB>alkenyl or C<SUB>5</SUB>C<SUB>6</SUB>cycloalkyl; and (B) one or more compounds selected from benzotriazoles of the formula (IIa), 2-hydroxybenzophenones of the formula (IIb), oxalanilides of the formula (IIc), 2-hydroxyphenyltriazines of formula (IId), cinnamates of formula (IIe), and benzoates of formula (IIf) as defined in claim 1, is especially effective towards stabilizing organic materials against degradation induced by light, heat or oxidation.
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