O-substituted N-hydroxy hindered amine stabilizers

Claim 1

A compound corresponding to the formulae ##STR12## wherein R is hydrogen or methyl, R 1 is independently C 1 -C 18 alkyl, C 2 -C 18 alkenyl, C 2 -C 18 alkynyl, C 5 -C 8 cycloalkenyl, C 5 -C 12 cycloalkyl, C 6 -C 10 bicycloalkyl, C 6 -C 10 aryl, C 7 -C 9 aralkyl, or C 7 -C 9 aralkyl substituted by alkyl or C 6 -C 10 aryl; m is 2-4, when m is 2, R 2 is C 1 -C 12 alkylene, C 4 -C 12 alkenylene, xylylene, a divalent acyl radical of an aliphatic, cycloaliphatic, araliphatic or aromatic carboxylic acid, or of a dicarbamic acid, ##STR13## wherein D 3 and D 4 are independently hydrogen, an alkyl radical containing up to 8 carbon atoms, an C 6 -C 10 aryl or an C 7 -C 9 aralkyl or 3,5-di-tert-butyl-4-hydroxybenzyl radical, D 5 is hydrogen, or an alkyl or alkenyl radical containing up to 18 carbon atoms, and d is 0-20; when m is 4, R 2 is a trivalent acyl radical of an aliphatic, unsaturated aliphatic, cycloaliphatic, or aromatic tricarboxylic acid; when m is 4, R 2 is a tetravalent acyl radical of a saturated or unsaturated aliphatic or aromatic tetracarboxylic acid, p is 1, 2 or 3, R 3 is hydrogen, C 1 -C 12 alkyl, C 5 C 7 cycloalkyl, C 7 -C 8 aralkyl, C 2 -C 18 alkanoyl, C 3 -C 5 alkenoyl or benzoyl; when p is 1, R 4 is hydrogen, C 1 -C 18 alkyl C 5 C 7 cycloalkyl, C 2 -C 8 alkenyl unsubstituted or substituted by a cyano, carbonyl or carbamide group, C 6 -C 10 aryl, C 7 -C 9 aralkyl, glycidyl, a group of the formula --CH 2 --CH(OH)--Z or of the formula --CO--Z-- or --CONH--Z wherein Z is hydrogen, methyl or phenyl; or a group of the formulae ##STR14## or R 3 and R 4 together when p is 1 can be alkylene of 4 to 6 carbon atoms or 2-oxapolyalkylene or the cyclic acyl radical of an aliphatic or aromatic 1,2- or 1,3-dicarboxylic acid, when p is 2, R 4 is a direct bond or is C 1 -C 12 alkylene, C 6 -C 12 arylene, xylylene, a --CH 2 CH(OH)--CH 2 group, or a group --CH 2 --CH(OH)--CH 2 --O--X--O--CH 2 --CH(OH)--CH 2 -- wherein X is C 2 -C 10 alkylene, C 6 -C 15 arylene or C 6 -C 12 cycloalkylene; or, provided that R 3 is not alkanoyl, alkenoyl or benzoyl, R 4 can also be a divalent acyl radical of an aliphatic, cycloaliphatic or aromatic dicarboxylic acid or of a dicarbamic acid, or can be the group --CO--; or R 4 is ##STR15## where T 8 and T 9 are independently hydrogen, alkyl of 1 to 18 carbon atoms, or T 8 and T 9 together are alkylene of 4 to 6 carbon atoms or 3-oxapentamethylene, when p is 3, R 4 is 2,4,6-triazinyl, n is 1 or 2, when n is 1, R 5 and R' 5 are independently C 1 -C 12 alkyl, C 2 -C 12 alkenyl, C 7 -C 12 aralkyl, or R 5 is also hydrogen, or R 5 and R' 5 together are C 2 -C 8 alkylene or C 2 -C 8 hydroxyalkylene or C 4 -C 22 acyloxyalkylene; when n is 2, R 5 R' 5 together are (--CH 2 ) 2 C(CH 2 --) 2 ; R 6 is hydrogen, C 1 -C 12 alkyl, allyl, benzyl, glycidyl or C 2 -C 6 alkoxyalkyl; when n is 1, R 7 is hydrogen, C 1 -C 12 alkyl, C 3 -C 5 alkenyl, C 7 -C 9 aralkyl, C 5 -C 7 cycloalkyl, C 2 -C 4 hydroxyalkyl, C 2 -C 6 alkoxyalkyl, C 6 -C 10 aryl, glycidyl, a group of the formula --(CH 2 ) t --COO--Q or of the formula --(CH 2 ) t --O--CO--Q wherein t is 1 or 2, and Q is C 1 -C 4 alkyl or phenyl; or when n is 2, R 7 is C 2 -C 12 alkylene, C 6 -C 12 arylene, a group --CH 2 CH(OH)--CH 2 --O--X--O--CH 2 --CH(OH)--CH 2 -- wherein X is C 2 -C 10 alkylene, C 6 -C 15 arylene or C 6 -C 12 cycloalkylene, or a group --CH 2 CH(OZ')CH 2 --(OCH 2 --CH(OZ')CH 2 ) 2 -- wherein Z' is hydrogen, C 1 -C 18 alkyl, allyl, benzyl, C 2 -C 12 alkanoyl or benzoyl; Q 1 is --N(R 8 )-- or --O--; E is C 1 -C 3 alkylene, the group --CH 2 --CH(R 9 )--O-- wherein R 9 is hydrogen, methyl or phenyl, the group --(CH 2 ) 3 --NH-- or a direct bond; R 10 is hydrogen or C 1 -C 18 alkyl, R 8 is hydrogen, C 1 -C 18 alkyl, C 5 -C 7 cycloalkyl, C 7 -C 12 aralkyl, cyanoethyl, C 6 -C 10 aryl, the group --CH 2 --CH(R 9 )--OH wherein R 9 has the meaning defined above; a group of the formula ##STR16## or a group of the formula ##STR17## wherein G is C 2 -C 6 alkylene or C 6 -C 12 arylene; or R 8 is a group --E--CO--NH--CH 2 --OR 10 ; T 3 is ethylene or 1,2-propylene, or is the repeating structural unit derived from an alpha-olefin copolymer with an alkyl acrylate or methacrylate; k is 2 to 100; T 4 has the same meaning as R 4 when p is 1 or 2, T 5 is methyl, T 6 is methyl or ethyl, or T 5 and T 6 together are tetramethylene or pentamethylene, M and Y are independently methylene or carbonyl; T 7 is the same as R 7 , T 10 and T 11 are independently alkylene of 2 to 12 carbon atoms, or T 11 is ##STR18## T 12 is piperazinyl, --NR 11 --(CH 2 ) d --NR 11 -- or ##STR19## where R 11 is the same as R 3 and is also ##STR20## a, b and c are independently 2 or 3, and f is 0 or 1, e is 2, 3 or 4; T 13 is the same as R 2 with the proviso that T 13 cannot be hydrogen when n is 1; E 1 and E 2 , being different, each are --CO-- or --N(E 5 ) where E 5 is hydrogen, C 1 -C 12 alkyl or alkoxycarbonylalkyl of 4 to 22 carbon atoms; E 3 is hydrogen, alkyl of 1 to 30 carbon atoms, phenyl, naphthyl, said phenyl or said naphthyl substituted by chlorine or by alkyl of 1 to 4 carbon atoms, or phenylalkyl of 7 to 12 carbon atoms, or said phenylalkyl substituted by alkyl of 1 to 4 carbon atoms, E 4 is hydrogen, alkyl of 1 to 30 carbon atoms, phenyl, naphthyl or phenylalkyl of 7 to 12 carbon atoms, or E 3 and E 4 together are polymethylene of 4 to 17 carbon atoms, or said polymethylene substituted by up to four alkyl groups of 1 to 4 carbon atoms, and E 6 is an aliphatic or aromatic tetravalent radical, and with the proviso that in formula B when R 1 is alkyl, R 3 is not hydrogen.