Piperidine-triazine compounds suitable for use as stabilisers for organic materials

A compound of formula (Ia) ##STR114## in which R.sub.1 is hydrogen, C.sub.1 -C.sub.8 alkyl, O., OH, CH.sub.2 CN, C.sub.1 -C.sub.18 alkoxy, C.sub.5 -C.sub.12 cycloalkoxy, C.sub.3 -C.sub.6 alkenyl, C.sub.7 -C.sub.9 phenylalkyl which is unsubstituted or substituted on the phenyl with 1, 2 or 3 C.sub.1 -C.sub.4 alkyls, aliphatic C.sub.1 -C.sub.8 acyl;

• R.sub.2 is ##STR115## where R.sub.4 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.12 cycloalkyl, which is unsubstituted or substituted with 1, 2 or 3 C.sub.1 -C.sub.4 alkyls, C.sub.7 -C.sub.7 phenylalkyl which is unsubstituted or substituted on the phenyl with 1, 2 or 3 C.sub.1 -C.sub.4 alkyls, tetrahydrofurfuryl, a group of formula (II) ##STR116## or C.sub.2 -C.sub.4 alkyl which is substituted in the 2, 3 or 4 position with C.sub.1 -C.sub.8 alkoxy, with di(C.sub.1 -C.sub.4 alkyl)amino or with a group of formula (III) ##STR117## where A.sub.1 is a direct bond, --O--, --CH.sub.2 --, --CH.sub.2 CH.sub.2 -- or ##STR118## or R.sub.2 is also one of the groups of formulae (IVa)-(IVc) ##STR119## in which R.sub.1 is as defined above, A.sub.2 is --CH.sub.2 CH.sub.2 --, --CO--, --COCO--, --CH.sub.2 CO-- or --COCH.sub.2 CO-- and p is zero or 1, the nitrogen atom substituted with the piperidyl group being bound to the triazine ring of formula (Ia) or (Ib);
• R.sub.3 is a group of formula (V) ##STR120## with R.sub.1 and R.sub.2 as defined above, or a group of formula (III) or an R.sub.5 O-- or ##STR121## group, where R.sub.5, R.sub.6 and R.sub.7, which are identical or different, are hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.12 cycloalkyl which is unsubstituted or substituted with 1, 2 or 3 C.sub.1 -C.sub.4 alkyls, C.sub.8 -C.sub.18 alkenyl, phenyl which is unsubstituted or substituted on the phenyl with 1, 2 or 3 C.sub.1 -C.sub.4 alkoxy, C.sub.7 -C.sub.9 phenylalkyl which is unsubstituted or substituted in the 2, 3 or 4 position with C.sub.1 -C.sub.8 alkoxy or with the di(C.sub.1 -C.sub.4 alkyl)amino or with a group of formula (III);
• G.sub.1 is a group of formula (VI) ##STR122## in which A.sub.3 is a >N--(R.sub.8 --A.sub.5).sub.q group, where R.sub.8 is C.sub.2 -C.sub.6 alkylene, A.sub.5 is --O-- or ##STR123## and q is zero or 1, with R.sub.10 having any one of the meanings given for R.sub.4, and A.sub.4 is --CH.sub.2 CH.sub.2 -- or a ##STR124## or ##STR125## group, the endocyclic nitrogen atom of the formula (VI) being able to be bound to the triazine ring or to the L.sub.1 group of formula (Ia);
• m is 1, 2, 3 or 4;
• if m is 1, L.sub.1 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.3 -C.sub.6 alkenyl, C.sub.7 -C.sub.9 phenylalkyl which is unsubstituted or substituted on the phenyl with 1, 2 or 3 C.sub.1 -C.sub.4 alkyls, aliphatic, cycloaliphatic or aromatic acyl containing not more than 22 carbon atoms or (C.sub.1 -C.sub.18 alkoxy)carbonyl;
• if m is 2, L.sub.1 is C.sub.2 -C.sub.12 alkylene, C.sub.4 -C.sub.12 alkylene interrupted by 1, 2 or 3 oxygen atoms, phenylenedi(C.sub.1 -C.sub.4 alkylene), aliphatic, cycloaliphatic or aromatic diacyl containing not more than 20 carbon atoms or one of the groups of formulae (VIIIa)-(VIIId) ##STR126## in which R.sub.13 has any one of the meanings given for R.sub.3 or is a group of formula (IX) ##STR127## where R.sub.1, R.sub.2 and R.sub.3 are as defined above and R.sub.18 is a group of formula (VI) or a group of formula (VII) as defined above, or R.sub.13 is also an R.sub.18 H group, R.sub.14 has any one of the meanings given for R.sub.3 or is a group of formula (IX), R.sub.15 is a group of formula (Xa) or (Xb) ##STR128## in which A.sub.7, A.sub.8 and A.sub.9, which are identical or different, have any one of the meanings given for A.sub.5, R.sub.19 is C.sub.2 -C.sub.12 alkylene, C.sub.4 -C.sub.12 alkylene interrupted by 1,2 or 3 oxygen atoms, C.sub.5 -C.sub.7 cycloalkylene, C.sub.5 -C.sub.7 cycloalkylenedi(C.sub.1 -C.sub.4 alkylene), C.sub.1 -C.sub.4 alkylenedi(C.sub.5 -C.sub.7 cycloalkylene), phenylenedi(C.sub.1 -C.sub.4 -alkylene) or is C.sub.4 -C.sub.12 alkylene interrupted by an ##STR129## group, where R.sub.21 has any one of the meanings given for R.sub.4 or is an aliphatic, cycloaliphatic or aromatic acyl containing not more than 12 carbon atoms or (C.sub.1 -C.sub.12 alkoxy)carbonyl, C.sub.2 -C.sub.4 alkylidenedi(C.sub.5 -C.sub.7 cycloalkylene), phenylene or C.sub.2 -C.sub.4 alkylidenediphenylene, each phenylene group being unsubstituted or substituted with 1 or 2 C.sub.1 -C.sub.4 alkyls, or R.sub.19 is a ##STR130## group, with R.sub.22 being hydrogen or C.sub.1 -C.sub.4 alkyl, or a ##STR131## group, R.sub.20 and R.sub.23 are C.sub.2 -C.sub.6 alkylene, s is zero or 1, A.sub.10 has any one of the meanings given for A.sub.3, R.sub.16 and R.sub.17 are C.sub.2 -C.sub.12 alkylene, C.sub.4 -C.sub.12 alkylene interrupted by 1, 2 or 3 oxygen atoms, C.sub.5 -C.sub.7 cycloalkylene, C.sub.5 -C.sub.7 cycloalkylenedi(C.sub.1 -C.sub.4 alkylene), C.sub.1 -C.sub.4 alkylenedi(C.sub.5 -C.sub.7 cycloalkylene), phenylenedi(C.sub.1 -C.sub.4 alkylene), C.sub.2 -C.sub.4 alkylenedi(C.sub.5 -C.sub.7 cycloalkylene), phenylene or C.sub.2 -C.sub.4 alkylidenediphenylene, each phenylene group being unsubstituted or substituted with 1 or 2 C.sub.1 -C.sub.4 alkyls, and r is zero or 1;
• if m is 3, L.sub.1 is aliphatic, cycloaliphatic or aromatic triacyl containing not more than 12 carbon atoms or a group of formula (XIa) or (XIb) ##STR132## in which R.sub.24 is as defined above for R.sub.14 and R.sub.25 is one of the groups of formulae (XIIA)-(XIId) ##STR133## in which A.sub.11, A.sub.12 and A.sub.13, which are identical or different, have any one of the meanings given for A.sub.5, R.sub.26, R.sub.27 and R.sub.28, which are identical or different, are C.sub.2 -C.sub.6 alkylene, t is zero or 1, R.sub.29, R.sub.30, R.sub.31 and R.sub.32, which are identical or different, have any one of the meanings given for R.sub.4, A.sub.14 is a direct bond or --CH.sub.2 --, u and v, which are identical or different, are integers from 2 to 6 and R.sub.33 is C.sub.3 -C.sub.12 alkanetriyl;
• and
• if m is 4, L.sub.1 is aliphatic or aromatic tetraacyl containing not more than 12 carbon atoms, tetrahydrofuran-2,3,4,5-tetracarbonyl or a group of formula (XIII) ##STR134## in which R.sub.34 is as defined above for R.sub.14 and R.sub.35 is one of the groups of formulae (XIVa)-(XIVc) ##STR135## in which A.sub.15 has any one of the meanings given for A.sub.5, R.sub.36 and R.sub.37, which are identical or different, are C.sub.2 -C.sub.6 alkylene, x is zero or 1 and R.sub.38 is C.sub.4 -C.sub.12 alkanetetrayl.