Patent ID: 6239275
Filing Date: 2001-05-29
Classification: C07D,C08K

Abstract:
A compound selected from the group consisting of the compounds of formula (I), (II) or (III) ##STR40##wherein(a) each X is independently selected from hydrogen, allyl, --COR.sup.a, --SO.sub.2 R.sup.b, --SiR.sup.c R.sup.d R.sup.e, --PR.sup.f R.sup.g and --POR.sup.f R.sup.g ;(b) each of Y and Z is independently selected from an aryl ring of the general formula (IV) ##STR41##(c) each B is independently selected from --R or --OR;(d) each R is independently selected from a hydrogen, a hindered phenol, a hydrocarbyl group, a hydrocarbyl group comprising a hindered phenol, a functional hydrocarbyl group and a functional hydrocarbyl group comprising a hindered phenol;(e) each R.sup.a is independently selected from C.sub.1 -C.sub.8 alkyl, halogen-substituted C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.2 -C.sub.8 alkenyl, --CH.sub.2 --CO--CH.sub.3, C.sub.7 -C.sub.12 aralkyl, C.sub.1 -C.sub.12 alkoxy, or phenyl which is unsubstituted or substituted by C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen and benzyl;(f) each R.sup.b is independently selected from C.sub.1 -C.sub.12 alkyl, C.sub.6 -C.sub.10 aryl and C.sub.7 -C.sub.18 alkylaryl;(g) each R.sup.c, R.sup.d and R.sup.e is independently selected from C.sub.1 -C.sub.18 alkyl, cyclohexyl, phenyl and C.sub.1 -C.sub.18 alkoxy;(h) each R.sup.f and R.sup.g is independently selected from C.sub.1 -C.sub.12 alkoxy, phenoxy, C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.12 cycloalkyl, benzyl, tolyl and phenyl;(i) each R.sup.1, R.sup.1', R.sup.2, R.sup.4, R.sup.4' and R.sup.4"" is independently selected from hydrogen, hydrocarbyl, functional hydrocarbyl, --O(hydrocarbyl), --O(functional hydrocarbyl), --SR, halogen, --SO.sub.2 R, --SO.sub.3 R, --COOR, --COR, --OCOR, --NRR and cyano;(j) each R.sup.3 is independently selected from R, --OR, --SR, halogen, --SO.sub.2 R, --SO.sub.3 R, --COOR, --COR, --NRR and cyano;(k) wherein at least one 4-position B group comprises a hindered phenol;(l) and further with the proviso that at least one R comprises a hindered phenol, a hydrocarbyl group comprising a hindered phenol, or a functional hydrocarbyl group comprising a hindered phenol.