摘要 |
The present invention relates to novel antioxidant compounds to reduce the physical or chemical degradation or discoloration of surfaces, especially the fading of a variety of surfaces from sunlight, wherein the antioxidant compound is a derivative of butylated hydroxytoluene or sorbic acid and is selected from the group consisting of: (I), (II), (III), (IV), wherein each R<1> and R<3> is selected from the group consising of hydroxy, methoxy, ethoxy, propoxy, butoxy, methyl, ethyl, propyl, straight or branched chained butyl groups, straight or branched chained amyl groups, and mixtures thereof; R<2> is a hydroxy group; each R<4> and R<7> is selected from the group consisting of a saturated or unsaturated C1-C22, alkyl, aryl, cyclic alkyl group (which may be interrupted by an ester, amide, or ether group), hydrogen, and mixtures thereof; each R<5>, R<6>, R<8>, and R<9> is selected from the group consising of a saturated or unsaturated C1-C22, alkyl, aryl, cyclic alkyl group (which may be interrupted by an ester, amide, or ether group), and mixtures thereof; n is from 1 to 50; Y is a hydrogen or a methyl group; Z is a hydrogen or a methyl group; wherein the amino group of the compounds of formulas (I) to (IV) can be protonated or quaternized with R<10>X where R<10> is a hydrogen, a C1-C6 alkyl group, C1-C6 hydroxyl alkyl group, benzyl group and mixtures thereof; and X<-> is any compatible anion. |