MXPA99010922A - Block oligomers containing 1-hydrocarbyloxy-2,2,6,6-tetramethyl-4-piperidyl groups as stabilizers for organic materials - Google Patents

Abstract

Compounds of formula (I), in which the polydispersity Mw/Mn is for example 1;n is 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14;the radicals R1 are for example C1-C18alkyl or C5-C12cycloalkyl;R2 is for example C2-C12alkylene;the radicals A and B* are independently of one another -OR3, -N(R4)(R5) or a group of formula (II);R3, R4 and R5, which are identical or different, are for example hydrogen or C1-C18alkyl, or -N(R4)(R5) is additionally a group of formula (III) with Y being -O-, -CH2-, -CH2CH2- or>N-CH3;X is -O- or>N-R6;R6 is for example hydrogen or C1-C18alkyl;R is preferably a group of formula (IV);and B has one of the meanings given for A;with the proviso that in the individual recurrent units of formula (I), each of the radicals B, R, R1 and R2 has the same or a different meaning. The indicated compounds are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers.

Description

OLIGO EROS OF BLOCKS CONTAINING GROUPS 1-HIDROCARBILOXI- 2,2,6,6-TETRAMETIL-4-PIPERIDILO AS STABILIZERS FOR ORGANIC MATERIALS The present invention relates to specific block oligomers containing 1-hydrocarbyloxy-2, 2, 6, 6-tetramethyl-4-piperidyl groups, for use as light stabilizers, thermal stabilizers and oxidation stabilizers for organic materials, particularly synthetic polymers. , and with the organic materials thus stabilized. In addition, the present invention relates to a mixture. with a narrow molecular weight distribution, containing at least three different oligomers of different simple blocks, and a method for the preparation thereof. The stabilization of synthetic polymers with 2, 2, 6,6-tetramethylpiperidine derivatives has been described for example in US-A-4 086 204, US-A-4 331 586, US-A-4 335 242, 'US- A-4 234 707, US-A-4 459 395, US-A-4 492 791, US-A-5 204 473, EP-A-53 775, EP-A-357 223, EP-A-377 324 , EP-A-462 069, EP-A-782 994 and GB -? - 2 301 106. The present invention relates in particular to a compound of the formula (I) in which n is a number from 2 to 14.; the radicals Ri being independently hydrogen, a hydrocarbyl radical or -ORi is -O; the radicals R 2 are independently from each other C 2 -C 2 alkylene, C 4 -C 2 alkenylene, C 5 C cycloalkylene, Cs-Cdi cycloalkylene (C 1 -C 4 alkylene), C 4 -C 4 alkylene (C5-C7 cycloalkylene), phenylendi (C? -C4 alkylene) or C4-C12 alkylene interrupted by 1,4-piperazinyl, -O- or > N-X? with Xx being acyl of C? -C? 2 or (C? -C12alkoxy) carbonyl or having one of the definitions of R4 given above except hydrogen; or R2 is a group of formulas (a), (b) or (c); (b) with m being 2 or 3, X 2 being C 1 -C 8 alkyl, C 5 -C 12 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C 1 -C alkyl; phenyl which is unsubstituted or substituted by 1, 2 or 3 C 1 -C 4 alkyl or C 1 -C 4 alkoxy; C7-C9 phenylalkyl which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C? -C alkyl; and the X3 radicals independently of each other being C2-C2 alkylene; the radicals A being independently of one another -OR3, -N (R4) (R5) or a group of the formula (II); R3, R and R5, which are identical or different, are hydrogen, C3-C18 alkyl, C5-C12 cycloalkyl, which is unsubstituted or substituted by 1, 2 or 3 C1-C4 alkyl; C3-C3 alkenyl, phenyl which is unsubstituted or substituted by 1, 2 or 3 C1-C4 alkyl or Cx-C4 alkoxy; C7-C9 phenylalkyl which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C? -C4 alkyl; tetrahydrofurfuryl or C2-C4 alkyl which is substituted in the 2, 3 or 4 position by -OH, C? -C8 alkoxy, di (C1-C4 alkyl) amino or a group of the formula (III); with Y being -0-, -CH2-, -CH2CH2- or > N-CH3; or -N (R4) (R5) is additionally a group of the formula (III); X is -0- or > N-R6; R6 is hydrogen, C? -C? 8 alkyl, alkenyl of C3-C? S, C5-C12 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C? -C4 alkyl; phenylalkyl of C-C9 which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C 1 -C 4 alkyl; tetrahydrofurfuryl, or a group of the formula (IV), or C2-C4 alkyl which is substituted at the 2, 3 or 4 position by -OH, C? -C8 alkoxy, di (C1-C4 alkyl) amino or a group of the formula (III); the radicals R independently have one of the meanings given for Re; and the radicals B and B * have independently one of the meanings given for A; with the proviso that in the individual recurring units of the formula (I), each of the radicals B, R and R2 have the same or different meaning. In the individual recurring units of the formula (I), each of the radicals B, R, Ri and R2 preferably have the same meaning. In the formula (I), the radical R and the radical they can have a random distribution or a distribution of blocks. Ri is preferably a hydrocarbyl radical having from 1 to 18 carbon atoms. Ri as a hydrocarbyl radical is for example Ci-Ciß alkyl, C 5 -C 8 alkenyl, C 5 -C 18 alkynyl, C 5 -C 2 cycloalkyl unsubstituted or substituted by C 1 -C 4 alkyl; C5-C12 cycloalkenyl unsubstituted or substituted by C? -C4 alkyl; a bicyclic or tricyclic hydrocarbyl having from 6 to 10 carbon atoms or C7-C9 phenylalkyl unsubstituted or substituted on the phenyl by Ci-C4 alkyl. Examples of alkyl containing not more than 18 carbon atoms are methyl, ethyl, propyl, isopropyl, butyl, 2-butyl, isobutyl, t-butyl, pentyl, 2-pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, t-octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, hexadecyl and octadecyl. Ri is preferably C 1 -C 2 alkyl, in particular C 1 -C 8 alkyl. R 4, R 5 and Re are preferably C 1 -C 4 alkyl, in particular C 1 -C 4 alkyl. An example of C2-C4 alkyl substituted by -OH is 2-hydroxyethyl. Examples of C2-C4 alkyl substituted by C'-C8-alkoxy, preferably by C-C4-alkoxy, in particular methoxy or ethoxy, are 2-methoxyethyl, 2-ethoxyethyl, 3-methoxypropyl, 3-ethoxypropyl, 3-butoxypropyl, 3-octoxypropyl and 4-methoxybutyl. Examples of C 2 -C 4 alkyl substituted by di (C 1 -C 4 alkyl) amino, preferably by dimethylamino or diethylamino, are 2-dimethylaminoethyl, 2-diethylaminoethyl, 3-dimethylaminopropyl, 3-diethylaminopropyl, 3-dibutylamino-propyl. and 4-diethylaminobutyl.

The group of the formula (III) is preferably / \ N O \ / Preferred examples of C2-C4 alkyl substituted by a group of formula (III) are the groups of The group referred. Examples of Cs-C 2 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C 1 -C alkyl are cyclopentyl, methylcyclopentyl, dimethylcyclopentyl, cyclohexyl, methylcyclohexyl, dimethylcyclohexyl, trimethylcyclohexyl, t-butylcyclohexyl, cyclooctyl, cyclodecyl and cyclododecyl. Unsubstituted or substituted cyclohexyl is preferred. A preferred example of a bicyclic or tricyclic hydrocarbyl having from 6 to 10 carbon atoms is 1,2,3,4-tetrahydronaphtenyl. A preferred example of Cs-C 2 cycloalkenyl unsubstituted or substituted by C 1 -C 4 alkyl is cyclohexenyl.

Examples of alkenyl containing not more than 18 carbon atoms are allyl, 2-methylallyl, butenyl, hexenyl, undecenyl and octadecenyl. Alkenyls in which the carbon atom saturated in position 1 are preferred. A preferred example of C 5 -C 8 alkynyl is octynyl. The examples of. phenyl substituted by 1, 2 or 3 C?-C4 alkyl or C?-C4 alkoxy are methylphenyl, dimethylphenyl, trimethylphenyl, t-butylphenyl, di-t-butylphenyl, 3,5-di-t-butyl-4- methylphenyl, methoxyphenyl, ethoxyphenyl and butoxyphenyl. Examples of phenylalkyl of C-Cg which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C 1 -C 4 alkyl are benzyl, methylbenzyl, dimethylbenzyl, trimethylbenzyl, t-butylbenzyl and 2-phenylethyl. Benzyl is preferred. Examples of acyl (aliphatic, cycloaliphatic or aromatic) containing not more than 12 carbon atoms are formyl, acetyl, propionyl, butyryl, pentanoyl, hexanoyl, heptanoyl, octanoyl and benzoyl. C?-C8 alkanoyl and benzoyl are preferred. Acetyl is especially preferred. Examples of (C 1 -C 2 alkoxycarbonyl) are methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, butoxycarbonyl, pentoxycarbonyl, hexoxycarbonyl, heptoxycarbonyl, octoxycarbonyl, nonyloxycarbonyl, decyloxycarbonyl, undecyloxycarbonyl and dodecyloxycarbonyl. Examples of alkylene containing not more than 12 carbon atoms are ethylene, propylene, trimethylene, tetramethylene, pentamethylene, hexamethylene, octamethylene, decamethylene and dodecamethylene. R2 is, for example, C2-C8 alkylene or C4-C8 alkylene, in particular C2-C6 alkylene, preferably hexamethylene. An example of C 4 -C 2 alkenylene is 3-hexenylene. An example of Cs-C7 cycloalkylene is cyclohexylene. Examples of C 4 -C 2 alkylene interrupted by Examples of C4-C12 alkylene interrupted by -O-, for example 1, 2 or 3 -O-, are 3-oxapentan-l, 5-diyl, 4-oxaheptan-l, 7-diyl, 3, 6-dioxaoctan-l, 8-diyl, 4,7-dioxadecan-1, 10-diyl, 4,9-dioxadodecan-1, 12-diyl, 3,6,9-trioxaundecan-1, 11-diyl and 4, 7, 10-trioxatridecan-l, 13-diyl.

Examples of C 4 -C 2 alkylene interrupted by > N-X? are _-CH2CH2CH2-N (X?) -CH2CH2-N (Xi) -CH2CH2CH2-, in particular -CH2CH2CH2-N (CH3) -CH2CH2-N (CH3) -CH2CH2CH2-. An example of C 5 -C 7 cycloalkylene (C 1 -C 4 alkylene) is cyclohexylenedimethylene. Examples of C? -C4alkylene (C5-C7 cycloalkylene) are methylenedicyclohexylene and isopropylidenedicyclohexylene. An example of phenylendi (C 1 -C 4 alkylene) is phenylenedimethylene. The variable n is preferably a number from 2 to 12, in particular 2 to 6. Those compounds of the formula are preferred.

(I), where the polydispersity Mw / Mn is 1 and n is 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14. Polydispersity indicates the molecular weight distribution of a polymeric compound. In the present application, polydispersity is the average weight ratio (Mw) and the numerical average molecular weights (Mn). A value of Mw / Mn equal to 1 means that the compound is monodisperse and that it has only one of molecular weight and not a molecular weight distribution. A narrow molecular weight distribution is characterized by a polydispersity (Mw / Mn) close to 1.

When the polydispersity Mw / Mn is 1, n is preferably 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12, in particular 2, 3, 4, 5 or 6, for example 2, 4 or 6. R is preferably hydrogen, Ci-Ciocyclohexyl alkyl or a group of the formula (IV), in particular hydrogen or a group of the formula (IV). R as a group of the formula (IV) is especially preferred. Ri is preferably hydrogen, alkyl C? -C? 2, C5-C8 cycloalkyl, in particular C? -C8 alkyl or cyclohexyl, for example methyl, octyl or cyclohexenyl. The radicals A and B * are preferably -N (C? -C4 alkyl) 2. A further preferred embodiment of this invention relates to a compound of formula (I) wherein n is a number from 2 to 12; R 2 is C 2 -C 2 alkylene, C 5 -C 7 cycloalkylene, C 5 -C 7 cycloalkylene (C 1 -C 4 alkylene), C 1 -C 4 alkylene di (C 5 -C 7 cycloalkylene) or phenylene (alkylene) C1-C4); RQ is hydrogen, Ci-Cis alkyl, C5-C2 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C?-C4 alkyl; C7-C9 phenylalkyl which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C? -C4 alkyl; tetrahydrofurfuryl, or a group of the formula (IV), or C2-C4 alkyl which is substituted at the 2, 3 or 4 position by -OH, C?-C8 alkoxy, di (C 1 -C 4 alkyl) amino or a group of the formula (III); and R is a group of the formula (IV). A preferred compound of the formula (I) is that wherein R 2 is C 2 -C 0 alkylene, cyclohexylene, cyclohexylendi (C 1 -C 4 alkylene), C 1 -C 4 alkylene dicyclohexylene, or phenylendi (C 1 -C 4 alkylene); R3? R 4 and -5 which are identical or different, are hydrogen, C 1 -C 2 alkyl, C 5 -C 7 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C 1 -C 4 alkyl, alkenyl C3-C2, phenyl which is unsubstituted or substituted by 1, 2 or 3 C1-C4 alkyl; or benzyl which is unsubstituted or substituted on the phenyl by C? -C4 alkyl; tetrahydrofurfylfilo or C2-C3 alkyl which is substituted in the 2 or 3 position by -OH, C? -C4 alkoxy, di (C1-C4 alkyl) amino or a group of the formula (III); or -N (R) (R5) is additionally a group of the formula (III); and R 6 is hydrogen, C 1 -C 2 alkyl, cycloalkyl C5-C7 which is not substituted or substituted by 1, 2 or 3 C1-C4 alkyl; benzyl which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C 1 -C 4 alkyl; tetrahydrofurfuryl, a group of the formula (IV) or C2-C3 alkyl which is substituted at the 2 or 3 position by -OH, C1-C4 alkoxy, di (C? -C) alkyl amino or a group of the formula (III). Particularly preferred is a compound of the formula (I) wherein R2 is C2-C8 alkylene; R3? R4 and R5 / which are identical or different, are hydrogen, Ci-Cs alkyl, cyclohexyl which is unsubstituted or substituted by methyl; C3-Cs alkenyl, phenyl which is unsubstituted or substituted by methyl; benzyl; tetrahydrofurfuryl or C2-C3 alkyl which is substituted in the 2 or 3 position by -OH, C1-C4 alkoxy, dimethylamino, diethylamino or 4-morpholinyl; or '-N (R4) (R5) is further 4-morpholinyl; and Re is hydrogen, C? -C8 alkyl, cyclohexyl which is not substituted or substituted by methyl; benzyl, tetrahydrofurfuryl, a group of the formula (IV) or alkyl C2-C3. which is substituted in the 2 or 3 position by -OH, C1-C4 alkoxy, dimethylamino, diethylamino or 4-morpholinyl. Of special interest is a compound of the formula (I) wherein n is a number from 2 to 6; R2 is C2-Cd alkylene; A is -N (R4) (R5) or a group of the formula (II); R4 and R5, which are identical or different, are hydrogen, Ci-Cs alkyl, 2-hydroxyethyl or 2-methoxyethyl or -N (R4) (R5) is further 4-morpholinyl; X is > NR6; R6 is C? -C4 alkyl; and the radicals B and B * independently of one another have the definitions given for A. A further compound of the formula (I) which is of special interest is that where B * is different from B and each of the radicals B, R, Ri and R2 have the same meaning in the individual recurring units of the formula (I). A further embodiment of this invention is a product of formula (I) that has a polydispersity Mw / Mn from 1.1 to 1.7. More specifically, this product corresponds to a mixture that contains at least three monodisperse compounds (Mw / Mn = 1) of the formula (I) which vary only by the variable n, the mixture has a polydispersity Mw / Mn of 1.1 to 1.7.

A mixture that has a polydispersity Mw / Mn of 1. 1 to 1.6 or 1.2 to 1.6 or 1.25 to 1.6, in particular 1.3 to 1.6 is preferred.

A preferred mixture which has, for example, a polydispersity of 1.1 to 1.7 contains a monodisperse compound of the formula (la), a monodisperse compound of the formula (Ib) and a monodisperse compound of the formula (le), such compounds differ only in the number of repetitive units. (the) (Ib) (le) (Ic) the radicals A, B, B *, R, Rx and R2 are defined above, and the ratio of the compounds of the formula (la) to (Ib) to (le) in% mol is 2 : 1.6: 1 to 2: 0.5: 0.05, in particular 2: 1.2: 0.5 to 2: 0.4: 0.08, for example 2: 0.8: 0.4 to 2: 0.45: 0.08. The indicated mixture may additionally contain a compound of the formula (Id). and / or a compound of the formula (le) Each of these compounds can be present in the mixture in an amount of 0.5-30 mol%, preferably 0.5-20 mol%, 0.5-10 milli or 0.5-8 mol%, relative to the total mixture. Another particularly preferred mixture with a polydispersity of, for example, 1.1 to 1.7 contains the compounds of formulas (la), (Ib) and (le) where Ri is methyl, octyl or cyclohexyl; R2 is C2-C6 alkylene; A is -N (R4) (R5) or a group of the formula (II) with Ri being defined above; R 4 and R d, which are identical or different, are hydrogen, C 1 -C 8 alkyl, 2-hydroxyethyl or 2-methoxyethyl or -N (R 4) (R 5) is additionally "4-morpholinyl; X is > NR6; RQ is C 1 -C 4 alkyl, R is a group of formula (IV) with R x as defined above, and radicals B and B * independently of one another have the same meanings given for A.

A and B *, which are identical or different, are preferably -N (C? -Cβ) 2 alkyl or a group Also of interest is a mixture with a polydispersity of, for example, 1.1 to 1.7 which contains the compounds of the formulas (la), (Ib), and (le) where Ri is methyl, octyl or cyclohexyl; R2 is hexamethylene; A and B * are butylamino; B is N- (1-methoxy-2,4,6,6-tetramethyl-4-piperidyl) butylamino, N- (1-octyloxy-2, 2,6,6-tetramethyl-4-piperidyl) butylamino or N- (l-cyclohexyloxy-2,2,6,6-tetramethyl-4-piperidyl) butylamino; and R is l-methoxy-2,2,6,6-tetramethyl-4-piperidyl, 1-octyloxy-2,2,6,6-tetramethyl-4-piperidyl or 1-cyclohexyloxy-2,2,6,6 -tetramethyl-4-piperidyl.

A further embodiment of this invention is a method for preparing a mixture having the polydispersity indicated above and containing at least three different monodisperse compounds of the formula (I), which comprises 1) reacting a compound of the formula (A) with a compound of the formula (B) in a stoichiometric ratio to obtain a compound of the formula (C); 2) reacting a compound of formula (C) with a compound of formula (B) in a molar ratio of 1: 2 to 1: 3, preferably 1: 2, to obtain a mixture of at least three compounds different monodisperses of the formula (D) with n being 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, or 14, in particular 2, 4, and 6; 3) reacting the mixture obtained in 2) with a compound of the formula (E) in a stoichiometric ratio to obtain the desired mixture; reactions 1) to 3) are carried out in an organic solvent in the presence of an inorganic base. Examples for suitable organic solvents are toluene, xylene, trimethylbenzene, isopropylbenzene, diisopropylbenzene, and essentially water-insoluble organic ketones, such as for example methyl ethyl ketone and methyl isobutyl ketone. Xylene is preferred. Examples for an inorganic base are sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate. Sodium hydroxide is preferred. When radical B or B * in formula (A) or (E) is a group of formula (II) with X being -O-, the use of sodium carbonate or potassium carbonate as an inorganic base is appropriate. Reaction 1) is carried out, for example, at a temperature of 40 ° C to 70 ° C, preferably 50 ° C to 60 ° C. Reaction 2) is carried out, for example, at a temperature of 110 ° C to 180 ° C, preferably 140 ° C to 160 ° C. The reaction 3) is carried out, for example, at a temperature of 110 ° C to 180 ° C, preferably 140 ° C to 160 ° C.

The possible by-products are the compounds of the formulas (Id) and (le). The compound of the formula (A) can be prepared, for example, by reacting cyanuric chloride with a compound B-H in a stoichiometric ratio in the presence of an organic solvent and an inorganic base. In addition, the compound of the formula (E) can be prepared, for example, by reacting cyanuric chloride with the compounds of the formulas A-H and B * -H in a stoichiometric ratio in the presence of an organic solvent and an inorganic base. It is appropriate to use for the preparation of the compounds of the formula (A) and (E) the same solvent and the same inorganic base as in the reactions indicated above 1) to 3). In general, the materials used in the above process are known. In case they are not commercially available, they can be prepared analogously to known methods. The preparation of some initial materials is described here below. One embodiment of the invention is also a mixture obtainable by the method indicated above. The intermediates of the formula (D) are novel and are a further embodiment of this invention. Furthermore, this invention relates to a mixture containing at least three different monodisperse compounds (Mw / Mn = 1) of the formula (D) which vary only by the variable n, the mixture has a polydispersity Mw / Mn from 1.1 to 1.7. Preferred embodiments of the variable n and the radicals R, Ri, R2 and B given above for the compounds of the formula (I) are also related to the intermediates of the formula (D). A compound of the formula (I) or (D) with a Mw / Mn polydispersity of 1 can be prepared by building the compound step by step. Some representative examples for such a procedure are shown below. I) A compound of the formula (I) wherein R is a group of the formula (IV) and n is 2 can be conveniently prepared by reacting a compound of the formula (E) with a large excess of a compound of the formula (I) B) to obtain a compound of the formula (F) 'according to Scheme 1-1. The molar ratio of the compound of the formula (E) to the compound of the formula (B) can be for example 1: 4.

Scheme 1-1: (F) Subsequently, the compound of the formula (F) can be reacted with the compound of the formula (C) in a stoichiometric ratio to obtain the desired compound as shown in Scheme 1-2.

Scheme 1-2: (F) (C) II) A compound of the formula (I) wherein R is a group of the formula (IV) and n is 3 can be prepared conveniently by reacting a compound of the formula (F) with a compound of the formula (A) in a stoichiometric ratio to obtain a compound of the formula (G) according to Scheme II-1. Scheme II-l: (F) (A) (G) Next, the compound of the formula (G) can be reacted with a large excess of a compound of the formula (B) to obtain a compound of the formula (H) as shown in Scheme II-2. The molar ratio of the compound of the formula (G) to the compound of the formula (B) can be for example 1: 4.

Scheme II-2: (G) (B) (H) Subsequently, the compound of the formula (H) can be reacted with a compound of the formula (A) in a stoichiometric ratio to obtain a compound of the formula (K), following Scheme II-3.

(HE HAS) (K) III) A compound of the formula (I) wherein R is a group of the formula (IV) and n is 4 can be conveniently prepared by reacting a compound of the formula (H) with a compound of the formula (C) in a stoichiometric ratio to obtain a compound of the formula (L).

(H) (C) Reactions I) to III) are carried out, for example, in an organic solvent such as toluene, xylene, trimethylbenzene in the presence of an inorganic base such as sodium hydroxide at a temperature of 110 ° C to 180 ° C. ° C, preferably from 140 ° C to 160 ° C. The intermediary of the formula (D) where n is Example 2 and which has a polydispersity Mw / Mn of 1 can be prepared, for example, by reacting a compound of the formula (C) with a compound of the formula (B) in a molar ratio of 1:10 to 1: 50, preferably from 1:20 to 1:40, in particular from 1:20 to 1:35. The reaction can be carried out for example in an organic or pure solvent in the presence of an inorganic base. The solvent and / or the excess of the reagent of the formula (B) can be removed by distillation at the appropriate conditions. Examples for an organic solvent are toluene, xylene, trimethylbenzene, isopropylbenzene and diisopropylbenzene. Xylene is preferred. Examples for an inorganic base are sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate. Sodium hydroxide is preferred. The reaction is carried out at a temperature of, for example, 110 ° C to 180 ° C, preferably 140 ° C to 160 ° C. The compounds of the formula (I) as well as the mixtures described with a narrow molecular weight distribution are very effective in providing resistance to light, heat. and oxidation of organic materials, especially synthetic polymers and copolymers. In particular, a low pigment interaction, as well as a very good color is observed in polypropylene, especially polypropylene fibers, in particular in the presence of flame retardants, as well as in low density polyethylene (LDPE) films for in agriculture. It is also remarkable that the compounds of the formula (I), as well as the mixtures described with a narrow molecular weight distribution, are flame retardants by themselves. Examples of organic materials that can be stabilized are: 1. Polymers of monoolefins and diolefins, for example polypropylene, polyisobutylene, polybut-1-ene, poly-4-methylpent-l-ene, polyisoprene or • polybutadiene, as well as polymers of cycloolefins, for example of cyclopentene or norbornene, polyethylene (which may be optionally crosslinked), for example high density polyethylene (HDPE), high density polyethylene and high molecular weight (HDPE-HM), high density polyethylene and molecular weight ultra high (HDPE-UHMW), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), (VLDPE) and (ULDPE). The polyolefins, ie the polymers of the monoolefins exemplified in the preceding paragraph, preferably polyethylene and polypropylene, can be prepared by different methods, and especially by the following: a) radical polymerization (usually under high pressure and at elevated temperature). b) catalytic polymerization using a catalyst that normally contains one or more than one of the metals of groups IVb, Vb, VIb or VIII of the Periodic Table. These metals usually have one or more than one ligand, typically oxides, halides, alkalis, esters, ethers, amines, alkyls, alkenyls and / or aryls that may be either coordinated or coordinated. These metal complexes may be in free form or fixed on substrates, typically on activated magnesium chloride, titanium (III) chloride, alumina or silicon oxide. These catalysts can be soluble or insoluble in the polymerization medium. The catalysts can be used by themselves in the polymerization or additional activators can be used, typically metal alkyls, metal hydrides, metal alkyl halides, metal alkyl oxides or metal alkyloxanes, the metals being the elements of the groups. lía and / or Illa of the Periodic Table. These activators can be conveniently modified with additional ester, ether, amine or silyl ether groups. These catalytic systems are usually called Phillips catalysts, from Oil Indiana Standard, from Ziegler (-Natta), TNZ (DuPont), metallocene or single-site catalysts (SSC). 2. The polymer mixtures mentioned under 1), for example mixtures of polypropylene with polyisobutylene, polypropylene with polyethylene (for example PP / HDPE, PP / LDPE) and mixtures of the different types of polyethylene (for example LDPE / HDPE). 3. Copolymers of monoolefins and diolefins with one another or with other vinyl monomers, for example copolymers of ethylene / propylene, linear low density polyethylene (LLDPE) and mixtures thereof with low density polyethylene (LDPE), propylene / but-1-ene copolymers, propylene / isobutylene copolymers, ethylene / but-1-ene copolymers, ethylene / hexene copolymers, copolymers of ethylene / methyl ethylpenene, ethylene / heptene copolymers, ethylene / octene copolymers, propylene / butadiene copolymers, isobutylene / isoprene copolymers, ethylene / alkyl acrylate copolymers, ethylene / alkyl methacrylate copolymers, copolymers ethylene / vinyl acetate and its copolymers with carbon monoxide or ethylene / acrylic acid copolymers and their salts (ionomers) as well as terpolymers of ethylene with propylene and a diene such as hexadiene, dicyclopentadiene or ethylidene norbornene; and blends of such copolymers with others and with the polymers mentioned in 1) above, for example polypropylene / ethylene-propylene copolymers, LDPE / ethylene vinyl acetate (EVA) copolymers, LDPE / ethylene acrylic acid (EAA) copolymers , LLDPE / EVA, LLDPE / EAA and alternating or random polyalkylene / carbon monoxide copolymers and mixtures thereof with other polymers, for example polyamides. 4. Hydrocarbon resins (e.g. C5-C9) including hydrogenated modifications thereof (e.g. adhesives) and mixtures of polyalkylenes and starch. 5. Polystyrene, poly (p-methylstyrene), poly (α-methylstyrene). 6. Copolymers of styrene or α-methylstyrene with dienes or acrylic derivatives, for example styrene / butadiene, styrene / acrylonitrile, styrene / alkyl methacrylate, styrene / butadiene / alkyl acrylate, styrene / butadiene / alkyl methacrylate, •• styrene / maleic anhydride, styrene / acrylonitrile / methyl acrylate; mixtures of high impact strength or copolymers of styrene and another polymer, for example a polyacrylate, a diene polymer or an ethylene / propylene / diene terpolymer; and styrene block copolymers such as styrene / butadiene / styrene, styrene / iso-pentane / styrene, styrene / ethylene / butylene / styrene or styrene / ethylene / propylene / styrene. 7. The grafted copolymers of styrene or α-methylstyrene, for example styrene or polybutadiene, copolymers of styrene on polybutadiene-styrene or polybutadiene-acrylonitrile; styrene and acrylonitrile (or methacrylonitrile) on polybutadiene; styrene, acrylonitrile and methyl methacrylate on polybutadiene; styrene and maleic anhydride on polybutadiene; styrene, acrylonitrile and maleic anhydride or maleimide on polybutadiene; styrene and maleimide on polybutadiene; styrene and alkyl acrylates or methacrylates on polybutadiene; styrene and acrylonitrile on ethylene / propylene / diene terpolymers; styrene and acrylonitrile on polyalkyl acrylates or polyalkyl methacrylates, styrene and acrylonitrile on acrylate / butadiene copolymers, as well as mixtures thereof with the copolymers listed under 6), for example the copolymer mixtures known as ABS, MBS, ASA or AES 8. Halogen-containing polymers such as polychloroprene, chlorinated rubbers, chlorinated and brominated copolymer of isobutylene-isoprene (halobutyl rubber), chlorinated or sulfochlorinated polyethylene, copolymers of ethylene and chlorinated ethylene, homo and copolymers of epichlorohydrin, especially polymers of compounds of vinyl containing halogen, for example polyvinyl chloride, polyvinylidene chloride, polyvinyl fluoride, polyvinylidene fluoride, as well as copolymers thereof, such as vinyl chloride / vinylidene chloride copolymers, vinyl chloride / vinyl chloride acetate vinyl or vinylidene chloride / vinyl acetate. 9. Polymers derived from acids, β-unsaturates and derivatives thereof such as polyacrylates and polymethacrylates; polymethyl methacrylates, polyacrylamides and polyacrylonitriles, modified by impact with butyl acrylate. 10. Copolymers of the monomers mentioned under 9) with each other or with other unsaturated monomers, for example copolymers of acrylonitrile / butadiene, copolymers of acrylonitrile / alkyl acrylate, copolymers of acrylonitrile / alkoxyalkyl acrylate or acrylonitrile / vinyl halide or terpolymers of acrylonitrile / alkyl methacrylate / butadiene. 11. Polymers derived from unsaturated alcohols and amines or the acyl derivatives or acetals thereof, for example, polyvinyl alcohol, polyvinyl acetate, polyvinyl stearate, polyvinyl benzoate, polyvinyl maleate, polyvinyl butyral, polyallyl phthalate or polyallyl melamine, as well as its copolymers with the olefins mentioned in 1) above 12.- Homopolymers and copolymers of cyclic ethers such as polyalkylene glycols, polyethylene oxide, polypropylene oxide or copolymers thereof with bisglycidyl ethers. such as polyoxymethylene and those polyoxymethylenes containing ethylene oxide such as a comonomer, polyacetals modified with thermoplastic polyurethanes, acrylates or MBS 14. Polyphenylene oxides and sulfides, and mixtures of polyphenylene oxides with styrene polymers or polyamides. derivatives of polyethers terminated in hydroxyl, polyesters or polybutadiene s on the one hand and aliphatic or aromatic polyisocyanates on the other, as well as precursors thereof .. 16. Polyamides and copolyamides derived from diamines and dicarboxylic acids and / or aminocarboxylic acids or the corresponding lactams, for example polyamide 4, polyamide 6 , polyamide 6/6, 6/10, 6/9, 6/12, 4/6, 12/12, polyamide 11, polyamide 12, aromatic polyamides starting from m-xylene diamine and adipic acid; polyamides prepared from hexamethylenediamine and isophthalic acid and / or terephthalic acids and with or without an elastomer as a modifier, for example poly-2, 4,, -trimethylhexamethylene terephthalamide or poly-m-phenylene isophthalamide; and also block copolymers of the polyamides mentioned above with polyolefins, olefin copolymers, ionomers or chemically bonded or grafted elastomers; or with polyethers, for example with polyethylene glycol, polypropylene glycol or polytetramethylene glycol; as well as polyamides or copolyamides modified with EPDM or ABS; and polyamides condensed during processing (RIM polyamide systems). 17. Polyureas, polyimides, polyamide-imides, polyetherimides, polyesterimides, polyhydantoins and polybenzimidazoles. 18. Polyesters derived from dicarboxylic acids and / or from hydroxycarboxylic acids or the corresponding lactones, for example polyethylene terephthalate, polybutylene terephthalate, poly-1,4-dimethylolcyclohexane terephthalate and polyhydroxybenzoates, as well as block copolyether esters derived from polyethers finished in hydroxyl; and also polyesters modified with polycarbonates or MBS. 19. Polycarbonates and polyester carbonates. 20. Polysulfones, polyether sulfones and polyether ketones. 21. Crosslinked polymers derived from aldehydes on the one hand and phenols, ureas and melamines on the other hand, such as. phenol / formaldehyde resins, urea / formaldehyde resins and melamine / formaldehyde resins. 22. Alkyd resins with staining and without staining. 23. Unsaturated polyester resins derived from copolyesters of saturated and unsaturated dicarboxylic acids with polyhydric alcohols and vinyl compounds as crosslinking agents, and also halogen-containing modifications of low flammability. 2 . Crosslinkable acrylic resins derived from substituted acrylates, for example epoxy acrylates, urethane acrylates or polyether acrylates. 25. Alkyd resins, polyester resins and acrylate resins crosslinked with melamine resins, urea resins, isocyanates, isocyanurates, polyisocyanates or epoxy resins. 26. Crosslinked epoxy resins derived from aliphatic, cycloaliphatic, heterocyclic or aromatic glycidyl compounds, for example the products of the diglycidyl ethers of bisphenol A and bisphenol F, which are crosslinked with customary hardeners, such as anhydrides or amines, with or without accelerators. 27. Natural polymers such as cellulose, rubber, gelatin and chemically modified homologous derivatives thereof, for example cellulose acetates, cellulose propionates and cellulose butyrates, or cellulose ethers such as methyl cellulose; as well as -resins and their derivatives. 28. Mixtures of the polymers "mentioned above (polyblends), for example PP / EPDM, Polyamide / EPDM or ABS, PVC / EVA, PVC / ABS, PVC / MBS, PC / ABS, PBTP / ABS, PC / ASA , PC / PBT, PVC / CPE, PVC / acrylates, POM / PUR thermoplastic, PC / PUR thermoplastic, POM / acrylate, POM / MBS, PPO / HIPS, PPO / PA 6.6 and copolymers, PA / HDPE, PA / PP, PA / PPO, PBT / PC / ABS or PBT / PET / PC 29. Natural and synthetic organic materials which are pure monomeric compounds or mixtures of such compounds, for example mineral oils, animal and vegetable fat, oil and waxes, or oils, fats and waxes based on synthetic esters (for example phthalates, adipates, phosphates or trimellitates) and also mixtures of synthetic esters with mineral oils in any weight ratios, typically those used as spinning compositions, as well as aqueous emulsions of such materials 30. Aqueous emulsions of natural or synthetic rubber, for example latex or natural latices of copolymers and carboxylated styrene / butadiene. The invention thus also relates to a composition comprising an organic material susceptible to degradation induced by light, heat or oxidation and at least one compound of the formula (I). The whole of. The compounds of the formula (I) which are present in the composition preferably have a polydispersity Mw / Mn from 1 to 1.7, for example from 1 to 1.65, l to l.6 or l to l.55. The invention furthermore relates to a composition comprising an organic material susceptible to degradation induced by light, heat or oxidation and a mixture containing at least three different compounds monodisperse (Mw / Mn = 1) of the formula (I) which vary only by the variable n, such mixture has a polydispersity Mw / Mn of 1.1 to 1.7 or 1.1 to 1.6, with the proviso that all of the compounds of the formula (I) that are present in the composition have a Polydispersity Mw / Mn from 1.1 to 1.7 or 1.1 to 1.6. The organic material is preferably a synthetic polymer, more particularly one selected from the aforementioned groups. Polyolefins are preferred, and polyethylene and polypropylene are particularly preferred. A further embodiment of this invention is a method for stabilizing an organic material against degradation induced by light, heat or oxidation, which comprises incorporating a compound of the formula (I) into the organic material. The totality of the compounds of the formula (I) which is present in the composition is preferably a polydispersity Mw / Mn of 1 to 1.7, in particular 1 to 1.6. The compounds of the formula (I) or a mixture thereof can be used in various proportions depending on the nature of the material to be stabilized, the end use and the presence of other additives. In general, it is appropriate to use, for example, the 0. 01 to 5% by weight of the compounds of the formula (I) or the mixture thereof, in relation to the weight of the material to be stabilized, preferably from 0.05 to 2%, in particular 0.05 to 1%. The compounds of the formula (I) or mixture thereof can be added, for example, to the polymeric materials before, during or after the polymerization or crosslinking of the materials. In addition, they can also be incorporated into polymeric materials in pure form or encapsulated in waxes, oils or polymers. In general, the compounds of the formula (I) or mixture thereof can be incorporated into the polymeric materials by various processes, such as dry mixing in powder form, or wet mixing in the form of solutions or suspensions or also in form of a masterbatch, which contains the compounds of the formula (I) or mixture thereof in a concentration of -2.5 to 25% by weight; in such operations, the polymer can be used in the form of powder, granules, solutions, suspensions, or in the form of latices. The materials stabilized with the compounds of the formula (I) or mixture thereof can be used for the production of moldings, films, tapes, monofilaments, fibers, surface coatings and the like. If desired, other conventional additives may be added. for synthetic polymers, such as antioxidants, UV absorbers, nickel stabilizers, pigments, fillers, plasticizers, corrosion inhibitors and metal deactivators, to organic materials containing the compounds of the formula (I) or mixture thereof . The particular examples of such conventional additives are: 1. Antioxidants 1.1. Alkylated monophenols, for example 2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-di-methylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6 -di-tert-butyl-4-n-butylphenol, 2, 6-di-tert-butyl-4-isobutylphenol, 2,6-dicyclopentyl-4-methylphenol, 2- (a-methylcyclohexyl) -4,6-dimethylphenol, 2,6-dioctadecyl-4'-methylphenol, 2 , 4,6-tricyclohexylphenol, 2,6-di-tert-butyl-4-methoxymethylphenol, nonylphenols, which are linear or branched in the side chains, for example, 2,6-di-nonyl-4-methylphenol, 2 , 4-dimethyl-6- (1 '-methylundec-1' -yl) phenol, 2,4-di-methyl-6- (1-methylheptadec-1-yl) phenol, 2,4-dimethyl-6 - (1 '-methyltri ~ dec-l' -yl) phenol mixtures thereof. 1. 2. Alkyltiomethylphenols, for example 2,4-dioctylthiomethyl-6-tert-butylphenol, 2,4-dioctylthiomethyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ethylphenol, 2,6-di-dodecylthiomethyl-4-nonylphenol. 1. 3. Hydroquinones and alkylated hydroquinones, for example 2,6-di-tert-butyl-4-methoxy-phenol, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,6-diphenyl -4-octadicyloxyphenol, 2,6-di-tert-butylhydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyanisole, 3,5-di stearate -tert-butyl-4-hydroxyphenyl, bis (3, 5-di-tert-butyl-4-hydroxyphenyl) adipate. 1. 4. Tocopherols, for example α-tocopherol, β-tocopherol, β-tocopherol-d-tocopherol and mixtures thereof (Vitamin E) . 1. 5. Hydroxylated thiodiphenyl ethers, for example 2,2'-thiobis (6-tert-butyl-4-methylphenol), 2,2'-thiobis (4-octylphenol), 4,4'-thiobis (6-tert-butyl) 3-methylphenol), 4,4'-thiobis (6-tert-butyl-2-methylphenol), 4,4'-thiobis- (3,6-di-sec-amylphenol), 4,4'-disulfide bis (2,6-dimethyl-4-hydroxypheni1) 1. 6. Alkylidenebisphenols, for example 2,2'-methylenebis (6-tert-butyl-4-methylphenol), 2,2'-methylenebis (6-tert-butyl-4-ethylphenol), 2,2'-methylenebis [4] -methyl-6- (a-methylcyclohexyl) -phenol], 2,2'-methylenebis (4-methyl-6-cyclohexylphenol), 2,2'-methylenebis (6-nonyl-4-methylphenol), 2, 2'-methylenebis (4,6-di-tert-butylphenol), 2,2'-ethylidebis (4,6-di-tert-butylphenol), 2,2'-ethylidebis (6-tert-butyl-4) isobutylphenol), 2, 2'-methylenebis [6- (a-methylbenzyl) -4-nonylphenol], 2,2'-methylenebis [6- (a, a-dimethylbenzyl) -4-nonylphenol], 4,4 ' -methylenebis (2,6-di-tert-butylphenol), 4,4'-methylenebis (6-tert-butyl-2-methylphenol), 1,1-bis (5-tert-butyl-4-hydroxy-2-) methylphenyl) butane, 2,6-bis (3-tert-butyl-5-methyl-2-hydroxybenzyl) -4-methylphenol, 1, 1,3-tris (5-tert-butyl-4-hydroxy-2-methylphenyl) ) butane, 1,1-bis (5-tert-butyl-4-hydroxy-2-methyl-phenyl) -3-n-dodecyl mercaptobutane, ethylene glycol bis [3, 3-bis (3'-tert-butyl) butyrate -4 '-hydroxyphenyl)], bis (3-tert-butyl-4-hydroxy-5-methyl-phenyl) di-cyclope ntadiene, bis [2- (3 '-tert-butyl-2'-hydroxy-5' -methylbenzyl) -6-tert-butyl-4-methylphenyl], 1,1-bis- (3,5-dimethyl) terephthalate -2-hydroxyphenyl) butane, 2,2-bis- (3,5-di-tert-butyl-4-hydroxyphenyl) propane, 2,2-bis- (5-tert-butyl-4-hydroxy-2-methylphenyl) - 4-n-dodecyl mercaptobutane, 1,1,5,5-tetra- (5-tert-butyl-4-hydroxy-2-methylphenyl) pentane. 1. 7. Compounds of O-, N- and S-benzyl, for example 3,5,3 ', 5'-tetra-tert-butyl-4,4'-dihydroxydi-benzyl ether, octadecyl-4-hydroxy-mercaptoacetate 3,5-dimethylbenzyl, tridecyl-4-hydroxy-3,5-di-tert-butyl-benzyl mercaptoacetate, tris (3,5-di-tert-butyl-4-hydroxybenzyl) amine, bis-dithio-terephthalate 4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl), bis (3,5-di-tert-butyl-4-hydroxy-benzyl) sulfide, isooctyl-3, 5-di-ter-mercaptoacetate butyl-4-hydroxybenzyl. 1. 8. Hydroxybenzylated malonates, for example dioctadecyl-2, 2-bis- (3, 5-di-tert-butyl-2-hydroxybenzyl) malonate, di-octadecyl-2- (3-tert-butyl-4-malonate) hydroxy-5-methylbenzyl), di-dodecylmercaptoethyl-2,2-bis- (3, 5-di-tert-butyl-4-hydroxybenzyl) malonate, bis [4- (1, 1, 3, 3- tetramethylbutyl) phenyl] -2, 2-bis (3,5-di-tert-butyl-4-hydroxybenzyl). 1. 9. Aromatic hydroxybenzyl compounds, for example 1, 3, 5-tris- (3, 5-di-tert-butyl-4-hydroxy-benzyl) -2,4,6-trimethylbenzene, 1,4-bis (3 , 5-di-tert-butyl-4-hydroxybenzyl) -2,3,5,6-tetramethylbenzene, 2, 6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) phenol. 1. 10. Triazine compounds, for example 2,4-bis (octylmercapto) -6- (3,5-di-tert-butyl-4-hydroxyanilino) -1,3,5-triazine, 2-octylmercapto-4,6 -bis (3, 5-di-tert-butyl-4-hydroxyanilino) -1,3,5-triazine, 2-octylmercapto-4,6-bis (3,5-di-tert-butyl-4-hydroxyphenoxy) -1, 3, 5-triazine, 2,4,6-tris (3,5-di-tert-butyl-4-hydroxyphenoxy) -1, 2, 3-triazine, isocyanurate of 1, 3, 5-tris- (3, 5-di-tert-butyl-4-hydroxy-benzyl), isocyanurate 1, 3, 5-tris (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl), 2,4,6- tris (3,5-di-tert-butyl-4-hydroxyphenylethyl) -1,3,5-triazine, 1,3,5-tris (3,5-di-tert-butyl-4-hydroxyphenylpropionyl) -hexahydro- 1, 3, 5-triazine, isocyanurate of 1, 3, 5-tris (3,5-dicyclohexyl-4-hydroxybenzyl). 1. 11. Benzylphosphonates, for example dimethyl-2,5-di-tert-butyl-4-hydroxybenzyl phosphonate, diethyl-3,5-di-tert-butyl-4-hydroxybenzyl phosphonate, dioctadecyl-3, 5- phosphonate. di-tert-butyl-4-hydroxybenzyl, dioctadecyl-5-tert-butyl-4-hydroxy-3-methylbenzyl phosphonate, the calcium salt of 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid monoethyl ester . 1. 12. Acylaminophenols, for example 4-hydroxylauranylide, 4-hydroxysteatenylidene, N- (3,5-di-tert-butyl-4-hydroxyphenyl) octyl carbamate. 1. 13. Esters of ß- (3- (3,5-di-tert-butyl-4-hydroxy enyl) propionic acid with mono- or polyhydric alcohols, for example with methanol, ethanol, n-octanol, i-octanol, octadecanol , 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N, N'-bis ( hydroxyethyl) oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexandiol, trimethylolpropane, 4-hydroxymethyl-l-phospha-2,6,7-trioxabicyclo [2.2.2] octane. 1. 14, Esters of ß- (5-tert-butyl-4-hxdroxx-3-pethoxyphenyl) propionic acid with mono- or polyhydric alcohols, for example with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexan-diol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N, N'-bis (hydroxyethyl) oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethyl-hexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,6-trioxabicyclo [2.2.2] octane. 1. 15. Esters of β- (3,5-dicyclohexyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols, for example with methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1 9-nonanediol, ethylene glycol , 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N, N'-bis (hydroxyethyl) oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexandiol, trimethylolpropane , 4-hydroxymethyl-l-phospha-2, 6, 7-trioxabicyclo [2.2.2] octane. 1. 16 Esters of 3,5-dx-tert-butyl-4-hydroxyphenyl acetic acid with mono- or polyhydric alcohols, for example with methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol , 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N, N'-bis (hydroxyethyl) oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexandiol, trimethylolpropane , 4-hydroxymethyl-l-phospha-2, 6, 7-trioxabicyclo [2.2.2] octane. 1. 17. Amides of ß- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid, for example N, N'-bis (3,5-di-tert-butyl-4-hydroxyphenylpropionyl) hexamethylenediamide, N, N'-bis (3,5-di-tert-butyl-4-hydroxy-phenylpropionyl) trimethylene-diamide, N, N'-bis (3,5-di-tert-butyl-4-hydroxyphenylpropionyl) -hydrazide, N , N'-bis [2- (3, 5-di-tert-buty1-4-hydroxyphenyl] pro-phenyloxy) ethyl] oxamide (Naugard®XL-1 distributed by Uniroyal). 1. 18 Ascorbic acid (vitamin C) 1. 19. Ammonium antioxidants, for example N, N'-di-isopropyl-p-phenylenediamine, N, N'-di-sec-butyl-p-phenylenediamine, N, N'-bis (1,4-dimethylpentyl) -p-phenylenediamine , N, N'-bis (1-ethyl-3-methylpentyl) -p-phenylenediamine, N, N'-bis (1-methyl-heptyl) -p-phenylenediamine, N, N '-dicyclohexyl-p-phenylenediamine, N, N '-diphenyl-p-phenylenediamine, N, N'-bis (2-naphthyl) -p-phenylenediamine, N-isopropyl-N' -phenyl-p-phenylenediamine, N- (1,3-dimethylbutyl) - N '-phenyl-p-phenylenediamine, N- (1-methylheptyl) -N' -phenyl-p-phenylenediamine, N-cyclohexyl-N '-phenyl-p-phenylenediamine, 4- (p-toluenesulfamoyl) diphenylamine, N, '-dimethyl-N, N' -di-sec-butyl-p-phenylene diamine, diphenylamine, N-allyldiphenylamine, 4-isopropoxy-diphenylamine, N-phenyl-1-naphthylamine, N- (4-tert-octylphenyl) -1-naphthylamine, N-phenyl-2-naphthylamine, octylated diphenylamine, for example p, p'-di-tert-octyldiphenylamine, 4-n-butylaminophenol, 4-butyrylaminophenol, 4-nonanoylaminophenol, 4-dodecanoylaminophenol, 4-octadecane-ilaminophenol, bis (4-methoxyphenyl) amine, 2,6-di-tert-butyl-4-dimethylaminomethylphenol, 2,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylmethane, N, N, N ', N '-tetramethyl-4,4'-diaminodi-phenylmethane, 1,2-bis [(2-methylphenyl) amino] ethane, 1,2-bis (phenylamino) propane, (o-tolyl) biguanide, bis [4-] (1 ', 3' -dimethylbutyl) phenyl] amine, N-phenyl-1-naphthylamine tert-octylated, a mixture of tert-butyl / tert-octyldiphenylamines mono- and dialkylated, a mixture of mono- and dialkylated nonildiphenylamines, a mixture of mono- and dialkylated dodecyldiphenylamines, a mixture of mono- and dialkylated isopropyl / isohexyldiphenylamines, a mixture of mono- and dialkylated tert-butyldiphenylamines, 2,3-dihydro-3, 3-dimethyl-4H-1, -benzothiazine, phenothiazine, a mixture of mono- and dialkylated ter-butyl / tert-octylphenothiazines, a mixture of mono- and dialkylated tert-octylphenothiazines, N-allylphenothiazine, N, N, N ', N'-tetraphenyl-1,4-diaminobut-2- eno, N, N-bis (2,2,6,6-tetramethyl-piperid-4-yl-hexamethylenediamine) a, sebacate of bis (2, 2, 6, 6-tetramethylpiperid-4-yl), 2,2,6,6-tetramethylpiperidin-4-one, 2,2,6,6-tetramethylpiperidin-4-ol . 2. UV absorbers and photostabilizers 2.1. 2- (2'-Hydroxyphenyl) benzotriazoles, for example 2- (2'-hydroxy-5'-methylphenyl) -benzotriazole, 2- (3 ', 5'-di-tert-butyl-2'-hydroxyphenyl) benzotriazole, 2- (5'-tert-butyl-2'-hydroxyphenyl) benzotriazole, 2- (2'-hydroxy-5 '- (1,1,3,3-tetramethylbutyl) phenyl) benzotriazole, 2- (3', 5 '-di-tert-butyl-2' -hydroxyphenyl) -5-chloro-benzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5'-methylphenyl) -5-chloro-benzotriazole ", 2- (3 '-sec-butyl-5'-tert-butyl-2'-hydroxyphenyl) benzotriazole, 2- (2'-hydroxy-4'-octyloxyphenyl) benzotriazole, 2- (3', 5'-di-ter- amyl-2'-hydroxyphenyl) benzotriazole, 2- (3 ', 5'-bis- (a, a-dimethylbenzyl) -2'-hydroxyphenyl) benzotriazole, 2- (3'-t-butyl-2'-hydroxy) 5 '- (2-octyloxycarbonylethyl) phenyl) -5-chloro-benzotriazole, 2- (3'-tert-butyl-5' - [2- (2-ethylhexyloxy) -carbonylethyl] -2'-hydroxyphenyl) -5- chloro ~ benzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5 '- (2-methoxycarbonylethyl) phenyl) -5-chloro-benzotriazole, 2- (3'-tert-butyl-2'-hydroxy) -5 '- (2-methoxycarbonylethyl) phenyl) benzot Riazole, 2- (3'-tert-butyl-2'-hydroxy-5 '- (2-octyloxy-carbonylethyl) phenyl) benzotriazole, 2- (3'-tert-butyl-5' - [2- (2- ethylhexyloxy) carbonylethyl] -2 '-hydroxyphenyl) benzotriazole, 2- (3'-dodecyl-2'-hydroxy-5' -methylphenyl) benzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5 '- (2-isooctyloxycarbonylethyl) phenylbenzotriazole, 2,2'-methylene-bis- [4- (1,1,3,3-tetramethylbutyl) -6-benzotriazol-2-ylphenol]; the product of the transesterification of 2- [3'-tert-butyl-5 '- (2-methoxycarbonylethyl) -2'-hydroxyphenyl] 2H-benzotriazole with polyethylene glycol 300; [R-CH2CH-COO-CH2CH2-] - where R = 3'-tert-butyl-4'-hydroxy-5'-2H-benzotriazol-2-ylphenyl, 2- [2'-hydroxy-3 '- (a , α-dimethylbenzyl) -5 '- (1,1,3,3-tetramethylbutyl) -phenyl] benzotriazole; 2- [2'-hydroxy-3 '(1,1,3,3-tetramethylbutyl) -5' - (a, a-dimethylbenzyl) -phenyl] benzotriazole. 2. 2-Hydroxybenzoonones, for example the 4-hydroxy, 4-methoxy, 4-octyloxy, 4-decyloxy, 4-dodecyloxy, 4-benzyloxy, 4, 2 ', 4'-trihydroxy and 2'-hydroxy-4 derivatives , 4'-dimethoxy. 2. 3. Esters of substituted and unsubstituted benzoic acids, such as for example 4-tert-butyl phenyl salicylate, phenyl salicylate, octyl phenyl salicylate, dibenzoyl resorcinol, bis (4-tert-butylbenzoyl) resorcinol, benzoyl resorcinol, 3, 5 2,4-di-tert-butylphenyl di-tert-butyl-4-hydroxybenzoate, hexadecyl 3, 5-di-tert-butyl-4-hydroxybenzoate, 3,5-di-tert-butyl-4-benzoate hydroxy-octadecyl, 3,5-di-tert-butyl-4-hydroxybenzoate of 2-methyl-4,6-di-tert-butylphenyl. 2. 4. Acrylates, for example a-cyano-β, ethyl β-diphenylacrylate, α-cyano-β, isooctyl β-diphenylacrylate, methyl a-carbomethoxycinnamate, α-cyano-β-methyl-p-methoxy-cinnamate methyl, butyl a-cyano-β-methyl-p-methoxy-cinnamate, methyl α-carbomethoxy-p-methoxycinnamate and N- (β-carbomethoxy-β-cyanovinyl) -2-methylindoline. 2. 5. Nickel compounds, for example 2, 2'-thio-bis- [4- (1, 1, 3, 3-tetramethylbutyl) phenol] nickel complexes, such as the 1: 1 or 1: 2 complex, with or without additional ligands such as n-butylamine, triethanolamine or N-cyclohexyldiethanolamine, nickel dibutyldithiocarbamate, nickel salts of monoalkyl esters, for example the methyl or ethyl ester of 4-hydroxy-3,5-di-ter- butylbenzylphosphonic, ketoximes nickel complexes, for example 2-hydroxy-4-methylphenyl undecylketoxime, l-phenyl-4-lauroyl-5-hydroxypyrazole nickel complexes, with or without additional ligands. 2. 6. Sterically hindered amines, for example bis (2, 2, 6,6-tetramethyl-4-piperidyl) sebacate, bis (2, 2, 6,6-tetramethyl-4-piperidyl) succinate, bis ( 1, 2, 2, 6, 6-pentamethyl-4-piperidyl), bis (l-octyloxy-2, 2,6,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2, 6,6-pentamethyl-4-piperidyl) n-butyl-3,5-di-tert-butyl-4-hydroxybenzyl, the condensate of 1- (2-hydroxy-ethyl) -2,6,6-tetramethyl -4-hydroxypiperidine and succinic acid, linear or cyclic condensates of N, N'-bis (2, 2, 6, 6-tetramethyl-4-piperidyl) hexamethylenediamine and 4-tert-octylamino-2,6-dichloro-l, 3, 5-triazine, tris (2, 2, 6, 6-tetramethyl-4-piperidyl) nitrile triacetate, tetracis (2,2,6,6-tetramethyl-4-piperidyl) -1,2,3,4 -butane-tetracarboxylate, 1, 1 '- (1,2-ethanediyl) -bis (3,3,5,5-tetramethylpiperazinoha), 4-benzoyl-2,2,6,6-tetramethylpiperidine, 4-stearyloxy-2 , 2,6,6-tetramethylpiperidine, bis (1, 2, 2, 6, 6-pentamethylpiperidyl) -2-n-butyl-2- (2-hydro) malonate xi-3, 5-di-tert-butyl-benzyl), 3-n-octyl-7, 7, 9, 9-tetramethyl-l, 3, 8-triazaspiro [4.5] decan-2,4-dione, sebacate of bis (l-octyloxy-2, 2,6,6-tetramethylpipridyl), bis (l-octyloxy-2,2,6,6-tetramethylpiperidyl) succinate, linear or cyclic condensates of N, N'-bis- ( 2, 2, 6, 6-tetramethyl-4-piperidyl) hexa-methylenediamine and 4-morpholino-2,6-dichloro-3,5-triazine, the condensate of 2-chloro-, 6-bis (4-n) -butylamino-2, 2, 6,6-tetramethylpiperidyl) -1,3,5-triazine and 1,2-bis (3-aminopropylamino) ethane, the condensate of 2-chloro-4,6-di- (4 -n-butylamino-1,2,6,6-pentamethylpiperidyl) -1, 3, 5-triazine and 1,2-bis- (3-aminopropylamino) ethane, 8-acetyl-3-dodecyl-7, 7 , 9, 9-tetra-methyl-1, 3, 8-triazaspiro [4.5] decan-2,4-dione, -3-dodecyl-l- (2,2,6,6-tetramethyl-4-piperidyl) pyrrolidine -2, 5-dione, 3-dodecyl-1- (1,2,2,6,6-pentamethyl-4-piperidyl) pyrrolidin-2, 5-dione, a mixture of 4-hexadecyloxy- and 4-stearyloxy- 2, 2, 6, 6-tetramethylpiperidine, a condensed product N, N'-bis (2, 2, 6,6-tetramethyl-4-piperidyl) hexamethylenediamine and 4-cyclohexylamino-2,6-dichloro-1,3,5-triazine, a product of the condensation of 1 , 2-bis (3-aminopropylamino) ethane and 2,4,6-trichloro-1,3,5-triazine, as well as 4-butylamino-2, 2,6,6-tetraethylpiperidine (CAS No. Reg. [136504-96-6]); N- (2,2,6,6-tetramethyl-4-piperidyl) -n-dodecylsuccinimide, N- (1,2,2,6,6-pentamethyl-4-piperidyl) -n-dodecyl succinimide, 2-undecyl-7, 7, 9, 9-tetramethyl-l-oxa-3,8-diaza-4-oxo-spiro [4,5] -decano, a reaction product of 7, 7, 9, 9 -tetramethyl-2-cycloundecyl-l-oxa-3, 8-diaza-4-oxospiro [4, 5] decane and epichlorohydrin, 1, 1-bis (1,2, 1,6, 6-pentamethyl-4-piperidyloxy) -carbonyl) -2- (4-methoxyphenyl) ethene, N, N'-bis-formyl-N, N'-bis (2,2,6,6-tetramethyl-4-piperidyl) hexamethylenediamine, 4- acid diester methoxy-methylene-malonic with 1, 2, 2, 6, 6-pentamethyl-4-hydroxypiperidine, poly [methylpropyl-3-oxy-4- (2,2,6,6-tetramethyl-4-piperidyl)] siloxane, the reaction product of the anhydride-to-olefinic acid copolymer of maleic acid with 2, 2, 6,6-tetramethyl-4-aminopiperidine or 1, 2, 2, 6, 6-pentamethyl-4-aminopiperidine. 2. 7. Oxamides, for example 4,4'-dioctyloxyoxanilide, 2,2 '-dietoxyoxanilide, 2,2' -dioctyloxy-5,5'-di-tert-butoxyanilide, 2,2'-didodecyloxy-5, 5 '- di-tert-butoxyanilide, 2-ethoxy-2'-ethyloxanilide, N, N'-bis (3-dimethyl-aminopropyl) oxamide, 2-ethoxy-5-tert-butyl-2'-ethoxyanilide and their mixtures with 2- ethoxy-2'-ethyl-5,4'-di-tert-butoxanilide, mixtures of oxanilides substituted with methoxy in the ortho and para positions and mixtures of oxanilides substituted with ethoxy in the ortho and para positions. 2. 8. 2- (2-Hydroxyphenyl) -1,3,5-triazines, for example 2,4,6-tris (2-hydroxy-4-octyloxyphenyl) -1,3,5-triazine, 2- (2- hydroxy-4-octyloxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- (2,4-dihydroxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1, 3, 5-triazine, 2,4-bis (2-hydroxy-4-propyloxyphenyl) -6- (2,4-dimethylphenyl) -1, 3, 5-triazine, 2- (2-hydroxy-4) -octyloxyphenyl) -4,6-bis- (4-methylphenyl) -1,3,5-triazine, 2- (2-hydroxy-4-dodecyloxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1 , 3, 5-triazine, 2- (2-hydroxy-4-tridecyloxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [2-hydroxy-4- ( 2-hydroxy-3-butyloxy-propoxy) phenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [2-hydroxy-4- (2-hydroxy-3- octyloxy-propyloxy) phenyl] -4,6-bis- (2,4-dimethyl) -1,3,5-triazine, 2- [4- (dodecyloxy / tridecyloxy-2-hydroxypropoxy) -2-hydroxy-phenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- [2-hydroxy-4- (2-hydroxy-3-dodecyloxy-propoxy) phenyl-] -4,6- bis (2,4-dimethyl-phenyl) -1, 3, 5-triazine, 2- (2-hydroxy-4-hexyloxy) phenyl-4,6-diphenyl-1,3,5-triazine, 2- (2-hydroxy-4-methoxyphenyl) -4,6-diphenyl -l, 3, 5-triazine, 2,4,6-tris [2-hydroxy-4- (3-butoxy-2-hydroxy-propoxy) phenyl] -1,3,5-triazine, 2- (2- hydroxyphenyl) -4- (4-methoxyphenyl) -6-phenyl-1,3,5-triazine, 2-. { 2-hydroxy-4- [3- (2-ethylhexyl-1-oxy) -2-hydroxy-propyloxy] phenyl} -4,6-bis (2,4-di-methylphenyl) -1,3,5-triazine. 3. Metal deactivators, for example N, N'-diphenyloxamide, N-salicylal-N '-salicyloyl hydrazine, N, N'-bis (salicyloyl) hydrazine, N, N'-bis (3,5-di-tert-butyl) 4-hydroxyphenylpropionyl) hydrazine, 3-salicyloylamino-1,2,4-triazole, bis (benzylidene) oxalyl dihydrazide, oxanilide, isophthaloyl dihydrazide, sebacoyl • bisphenylhydrazide, N, N'-diacetyladipoyl dihydrazide, N, N'-bis ( salicyloyl) oxalyl dihydrazide, N, N'-bis (salicyloyl) thiopropionyl dihydrazide. 4. Phosphites and phosphonxts, for example triphenyl phosphite, diphenyl alkyl phosphites, phenyl dialkyl phosphites, tris (nonylphenyl) phosphite, trilauryl phosphite, trioctadecyl phosphite, distearyl pentaerythritol diphosphite, tris (2, 4-dihydrophosphite) phosphite. tert-butylphenyl), diisodecyl pentaerythritol diphosphite, bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite, bis (2,6-di-tert-butyl-4-methylphenyl) -pentaerythritol diphosphite, diisodecyldoxypentaerythritol diphosphite diphosphite of bis (2,4-di-tert-butyl-6-methylphenyl) pentaerythritol, diphosphite of bis (2,4,6-tris (tert-butylphenyl) pentaerythritol, tristearyl sorbitol triphosphite, tetracis diphosphonite (2, 4-di-tert-butylphenyl) 4,4 '-biphenylene, 6-isooctyloxy-2,4,8,10-tetra-tef-butyl-12H-di-benz [d, g] -1, 3, 2- dioxaphosphocin, 6-fluoro-2, 4,8, 10-tetra-tert-butyl-12-methyl-dibenz [d, g] -1, 3, 2-dioxaphosphocin, bis (2, 4-di-ter) phosphite -butyl-6-methylphenyl) methyl, bis (2,4-di-tert-butyl-6-methylphenyl) ethyl phosphite, 2, 2 ', 2"-nitrile [triethyltris (3,3', 5, 5 '-tetra-tert-butyl-1,1' -biphenyl-2,2'-diyl) phosphite], 2-ethylhexyl (3, 3 ' , 5,5'-tetra-tert-butyl-1, 1-biphenyl-2,2'-diyl) phosphite.

. Hydroxylamines, for example, N, N-dibenzylhydroxylamine, N, -diethylhydroxylamine, N, N-dioctylhydroxylamine, N, N-dilaurylhydroxylamine, N, N-ditetradecylhydroxylamine, N, N-dihexadecylhydroxylamine, N, N-dioctadecylhydroxylamine, N-hexadecyl- N-octadecylhydroxylamine, N-heptadecyl-N-octadecylhydroxylamine, N, N-dialkylhydroxylamine derived from hydrogenated tallow amine. 6. Nitrones, for example, N-benzyl-alpha-phenyl-nitrona, N-ethyl-alpha-methyl-nitrona, N-octyl-alpha-heptyl-nitrona, N-lauryl-alpha-undecyl-nitrone, N-tetradecyl-alpha -tridicil-nitr'one, N-hexadecyl-alpha-pentadecyl-nitrone, N-octadecyl-alpha-heptadecyl-nitrone, N-hexadecyl-alpha-hepta-decyl-nitrone, N-ochatadecyl-alpha-pentadecyl-nitrone, N heptadecyl-alpha-heptadecyl-nitrone, N-octadecyl-alpha-hexa-decyl-nitrone, nitrone derived from N, N-dialkyloxyhydroxyl amine derived from hydrogenated tallow amine. 7. Tiosynergists, for example, dilauryl thiodipropionate or distearyl thiodipropionate. 8. Peroxide scavengers, for example esters of β-thiodipropionic acid, for example lauryl, stearyl, myristyl or tridecyl esters, mercaptobenzimidazole or the zinc salt of 2-mercapto-benzimidazole, zinc dibutyldithiocarbamate, dioctadecyl disulfide, tetracis (β -dodecylmercapto) pentaerythritol propionate. 9. Polyamide stabilizers, for example, copper salts in combination with iodides and / or phosphorus compounds and divalent manganese salts.

. Basic co-stabilizers, for example, melamine, polyvinylpyrrolidone, dicyandiamide, triallyl cyanurate, urea derivatives, hydrazine derivatives, amines, polyamides, polyurethanes, alkali metal salts and alkaline earth metal salts of higher fatty acids, for example calcium stearate, zinc stearate, magnesium behenate, sodium ricinoleate and potassium palmitate, antimony pyrocatechol or zinc pyrocatechol. 11. Nucleating agents, for example, inorganic substances such as talcum, metal oxides such as titanium dioxide or magnesium oxide, phosphates, carbonates or sulfates of, preferably, alkaline earth metals; organic compounds such as mono- or polycarboxylic acids and salts thereof, for example 4-tert-butylbenzoic acid, adipic acid, diphenylacetic acid, sodium succinate or sodium benzoate; polymeric compounds such as ionic copolymers (ionomers). 12. Fillers and reinforcing agents, for example, calcium carbonate, silicates, glass fibers, glass bulbs, asbestos, talc, kaolin, mica, barium sulfate, metal oxides and hydroxides, carbon black, graphite, sawdust and flours or fibers of other natural products, synthetic fibers. 13. Other additives, for example, plasticizers, lubricants, emulsifiers, pigments, rheology additives, catalysts, flow control agents, optical brighteners, flameproofing agents, antistatic agents, and blowing agents. 14. Benzofuranones and indolinones, for example those described in the U.S. 4,325,863; U.S. 4,338,244; U.S. 5,175,312; U.S. 5,216,052; U.S. 5,252,643; DE-A-4316611; DE-A-4316622; DE-A-4316876; EP-A-0589839 or EP-A-0591102 or 3- [4- (2-acetoxyethoxy) -phenyl] -5,7-di-tert-butyl-benzofuran-2-one, 5,7-di-ter- butyl-3- [4- (2-stearoyloxyethoxy) phenyl] benzofuran-2-one, 3,3 '-bis [5,7-di-tert-butyl-3- (4- [2-hydroxyethoxy] phenyl) benzofuran -2-one], 5, 7-di-tert-butyl-3- (4-ethoxyphenyl) benzo-furan-2-one, 3- (4-acetoxy-3,5-dimethylphenyl) -5,7-di -ter-butyl-benzofuran-2-on.a, 3- (3,5-dimethyl-4-pivaloyloxyphenyl) -5,7-di-tert-butyl-benzofuran-2-one, 3- (3, 4- dimethylphenyl) -5,7-di-tert-butyl-benzofuran-2-one, 3- (2,3-di-methylphenyl) -5,7-di-tert-butyl-benzofuran-2-one. The weight ratio of the compounds of the formula (I) or mixture thereof with the conventional additives can be from 1: 0.5 to 1: 5. The compounds of the formula (1) or mixture thereof are particularly useful for stabilizing pigmented polyolefins, in particular polypropylene. The. Compounds of the formula (I) or mixture thereof can also be used as stabilizers, especially as photostabilizers, for almost all of the materials known in the art of photographic reproduction and other reproduction techniques, such as for example, as described in Research Disclosure 1990, 31429 (pages 474 to 480). The explanations and comments given above for the compounds of the formula (I) and mixture thereof with respect to the stabilization of organic materials are also applicable to the intermediates of the formula (D) and mixtures thereof. The invention is illustrated in more detail by the following Examples. All percentages are by weight, unless otherwise indicated. The compounds of Examples V-1 and V-2 are related to the particularly preferred embodiment of this invention. The initial materials of formula (I-S) they can be prepared, for example, by reacting 1-oxyl-2, 2, 6,6-tetramethyl-4-piperidone with a hydroperoxide, preferably t-butyl hydroperoxide, in the presence of a catalyst which decomposes to the peroxide such as Mo03 in a hydrocarbon solvent. The meaning of Ri depends on the hydrocarbon solvent used. For example, when Ri is cyclohexyl, the hydrocarbon solvent used is cyclohexane. In general, the preparation of the initial materials of the formula (I-S) can be carried out analogously to the process described in US-A-4 921 962, which is incorporated herein by reference. It is also possible to prepare the "compounds of the formula (SI) by coupling l-oxyl-2, 2,6,6-tetramethyl-4-piperidone with hydrocarbon radicals." The principle of such a reaction is, for example, described by RL Kinney. et al., in J. Am. Chem. Soc., 1978, 100, 7902-7915 (Reaction of alkyl iodides with a tri-n-butyltin hydride) and by DW Grattan et al. in Polym. Degrad. and Stabili. 1979, 69 (Photolysis of a solution of di-tert-butyl peroxide and cyclohexane). The indicated reactions are described, for example, in US-A-5 021 577 (Examples 5 and 16), as well as in US-A-5 204 473 (Examples 7 to 10) and can be applied to prepare the compounds of the formula (IS) using the appropriate initial materials. When Ri is methyl, the preparation of the compound of the formula (SI) is conveniently carried out by reacting l-oxyl-2, 2, 6, 6-tetramethyl-4-piperidone with hydrogen peroxide in the presence of heptahydrate of ferrous sulfate in dimethyl sulfoxide, as described for example in US-A-5 374 729.

The preparation of l-oxyl-2, 2, 6,6-tetramethyl-4-piperidone is, for example, described in Nature 196, 472-474, Chemical Abstracts 58: 56264 and Beilstein EIII / IV 21 3279. The compounds of the formula (I) wherein Ri is hydrogen can be prepared, for example, by hydrogenation of the compounds of the formula (I), wherein -O-Ri is oxyl. The hydrogenation can be carried out according to known methods, for example in an organic solvent, for example methanol or ethanol, in the presence of a hydrogenation catalyst, preferably palladium on carbon or Pt02, as described for example in US-A-4 691 015. The following Examples 1-1 and 1-2 illustrate the preparation of the starting materials of the formula (SI) more specifically.

Example 1-1 (starting material): Preparation of l-methoxy-2, 2,6,6-tetramethyl-4-piperidone A flask with mechanical agitation, with 4 mouths, . 0 L was charged with l-oxyl-2, 2,6,6-tetramethyl-4-piperidone (300 g, 1.76 moles), ferrous sulfate heptahydrate (513.7 g, 1.85 moles) and dimethylsulfoxide (1450 g). 30% hydrogen peroxide (279.2 g, 2.46 moles) was added over a period of 1 hour 45 minutes. The temperature was maintained at 29-32 ° C. The contents were stirred for an additional 30 minutes at 25-30 ° C and then cooled to below 10 ° C. Water (1250 ml) was added and the mixture was extracted with four 750 ml portions of ethyl acetate. The combined extracts were washed, 2 x 1.0 L of H20, then with 1 x 500 mL of saturated NaCl and then dried over anhydrous MgSO4. The ethyl acetate was evaporated and the product was distilled (82-84 ° C / 0.33 x 10 ~ 2 bar), yielding 254 g of pale yellow oil (yield: 78% of theoretical, IR spectrum: Carbonyl ketone, 1710 cm -1) .

Example 1-2 (starting material): Preparation of l-cyclohexyloxy-2,2,6, β-tetramethyl-4-piperidone.

A mixture of cyclohexane (215 ml, 2.0 moles), t-butyl hydroperoxide, aqueous 70% (77.1 g, 0.6 moles), molybdenum trioxide (1.44 g, 0.01 moles) and l-oxyl-2, 2, 6 , 6-tetramethyl-4-piperidone (34 g, 0.2 mole) was charged into a 500 ml flask equipped with a Barrett trap. The mixture was stirred at reflux (80 ° C) for two hours until no more water was collected. The mixture was then filtered by gravity in a pressure bottle and molybdenum trioxide (1.44 g) was added., 0.01 moles). Subsequently, the mixture was heated under agitation at 105 ° C (2.34 bar) and kept so for 5 hours, until the color changed from dark orange to pale yellow. The mixture was filtered and the clear solution was washed with 10% aqueous sodium sulfite (100 ml) and subsequently with water (2 x 50 ml). The clear solution obtained was dried over sodium sulfate and then concentrated to give 50 g of the desired material as a light yellow oil (Mass spectrum: m / e = 253). The initial materials of the formula (II-S) they can be prepared, for example, analogously to the following Examples III and II-2.

Example II-1 (starting material): Preparation of N- (1-methoxy-2, 2,6,6-tetramethyl-4-piperidyl) butylamine.

A mixture of 185.3 g '(1 mole) of 1-methoxy-2,2,6,6-tetramet-il-4-oxopiperidine and 76.8 g (1.05 mole) of n-butylamine in 200 ml of methanol was added at 0.3 g. of Pt / C (5% w / w) moistened with 50% water (% w / w). The mixture was kept under stirring and under an atmosphere of N2 for 2 hours and was hydrogenated in an autoclave at 50 ° C and a hydrogen pressure of 10 bar.After completing the absorption of the hydrogen, the mixture was filtered and the solvent it was evaporated under vacuum (50 ° C / 3 mbar), then the oily residue was distilled at 94-99 ° C / 0.4 mbar.

Example II-2 (starting material): Preparation of N- (1-cyclohexyloxy-2, 2,6,6-6-tetramethyl-4-pxperxdyl) buylamine.

The product was prepared analogously to the method described in Example II-1, by the reaction of 126.7 g (0.5 'moles) of l-cyclohexyloxy-2,2,6,6-tetramethyl-4-oxopiperidine and 38.4 g ( 0.52 moles) of n-butylamine. An oily product was obtained which was separated as a hydrate (= wax with a melting point of <30 ° C). The initial materials of the formula (III-S) they can be prepared, for example, analogously to the following Examples III-1 and III-2. Some diamino compounds which can be used for the preparation of the starting materials of the formula (III-S) are, for example, described in WO-A-95/21157, US-A-4, 316, 8837 and US-A-4,743,688.

Example III-1 (starting material): Preparation of N, N'-bis (l-methoxy-2,2,6,6-tetramethyl-4-piperidyl) -1,6-hexandiamine.

The product was prepared as described in Example II-1, by the reaction of 185.3 g (1 mol) of 1-methoxy-2,2,6,6-tetramethyl-4-oxopiperidine and 60.4 (0.52 mol) of 1 , 6-hexandiamine. After crystallization with acetone, a white solid with a melting point of 63-65 ° C was obtained.

Example III-2 (starting material): Preparation of N, N'-bis (l-cyclohexyloxy-2, 2,6,6-tetramethyl-4-piperidyl) -1,6-hexandiamine.

The product was prepared as described in Example II-1, by the reaction of 126.7 g (0.5 moles) of l-cyclohexyloxy-2,2,6,6-tetramethyl-4-oxopiperidine and 30.2 g (0.26 moles) of 1,6-hexanediamine. An oily product was obtained which was separated as a hydrate (= wax with a melting point of <30 ° C). The initial materials of the formula (IV-S) they can be prepared, for example, analogously to the following Examples IV-1 and IV-2.

Example IV-1 (starting material): Preparation of 2,4-disloro-6- [N- (1-methoxy-2, 2,6,6-tetramethyl-4-piperidyl) butylamino] - [1.3.5] -triazine. 39. 7 g (163 mmol) of N- (1-methoxy-2,2,6,6-tetramethyl-4-piperidyl) butylamine were added slowly to a solution of 30 g (163 mmol) of cyanuric chloride in 180 ml of xylene , maintained at room temperature. After the addition, the mixture was stirred for 1/2 hour at room temperature and subsequently, a solution of 6.8 g (170 'mmoles) of sodium hydroxide in 45 ml of water was slowly added, maintaining the temperature at room temperature. After the addition, the mixture was stirred for 4 hours. and the aqueous phase was separated. The xylenic solution was washed twice with 60 ml of water, dried over anhydrous sodium sulfate, filtered and concentrated under vacuum (60 ° C / 1 mbar). A white solid with a melting point of 109-110 ° C was obtained.

Cl Analysis: Calculated: 18.16% Found: 17.93% Example IV-2 (starting material): Preparation of 2,4-dichloro-6- [N- (1-cyclohexyloxy-2, 2,6,6-tetramethyl) -4-piperidyl) butylamino] - [1.3.5] -triazine.

The product was prepared in a manner analogous to the method described in Example IV-1, using the appropriate reagents in the appropriate molar amounts. The compounds of the formula (IV-S-1) they can be prepared, for example, according to the Scheme shown below.

Scheme : L is for example an alkali metal salt such as lithium, sodium or potassium. The reaction can be carried out in an inert organic solvent such as toluene, xylene or trimethylbenzene at a temperature of -20 ° C to 70 ° C, preferably 0 ° C to 60 ° C, using the appropriate molar ratio of the reagents. The compounds of the formula (IV-Sla) can be obtained, for example, by treating the appropriate 4-hydroxypiperidine derivative with an alkali metal alcoholate or an alkali metal in an inert organic solvent such as toluene, xylene or trimethylbenzene at reflux temperature, simultaneously distilling the alcohol formed during the reaction. The preparation of the 4-hydroxypiperidine derivative can be carried out analogously to the method described in EP-A-309 402 (in particular Example 12). GPC was used (Permeation Chromatography in Gel) as an analytical procedure to separate from molecules by their difference in size and "to obtain the averages of molecular weights (Mw, Mn) or information on the molecular weight distribution of polymers The technique is well known and is described, for example, in "Modern Size - Exclusion Liquid Chromatography" by .W.Yan et al., edited by J. iley &Sons, NY, USA, 1979, pages 4-8, 249-283 and 315-340 A random molecular weight distribution was characterized by a polydispersity (Mw / Mn) close to 1. The GPC analyzes shown in the following Examples were carried out with a GPC ®Perkin-Elmer LC 250 chromatograph equipped with an Rl ®Perkin-Elmer LC detector. and - with the oven ® Perkin-Elmer LC 101. All analyzes were carried out at 45 ° C using 3 μm E PLGEL mixture of three columns of 300 mm length x 7.5 mm internal diameter (from Polymers Laboratories Ltd Shropshire, UK).

Tetrahydrofuran was used as eluent (flow rate of 0.40 ml / min) and the samples were dissolved in tetrahydrofuran (2%) (% w / v). In the structural formulas of the following examples, n 'indicates that there are repetitive units in the molecules and that the products obtained are not uniform.

These products are characterized by an average molecular weight Mn and the polydispersity Mw / Mn.

Example V-1: Preparation of the compound of the formula A solution of 24.4 g (53 mmol) of N, N'-bis (l-methoxy-2, 2,6,6-tetramethyl-4-piperidyl) -1,6-hexandiamine in 30 ml of xylene was slowly added to a solution of 41.3 g (106 mmol) of 2,4-dichloro-6- [N- (1-methoxy-2, 2,6,6-tetramethyl-4-piperidyl) butylamino] -1,3,5-triazine in 100 ml of xylene , under stirring at 35-40 ° C. The mixture was then heated to 60 ° C and a solution of 4.6 g (115 mmol) of sodium hydroxide in 15 ml of water was slowly added. Subsequently, the mixture was heated to 80 ° C and kept at 80 ° C for 4 hours under agitation. The aqueous solution was separated and 48.7 g were added (106 mmol) of N, N'-bis (l-methoxy-2,2,6,6-tetramethyl-4-piperidyl) -1,6-hexandiamine and 8.5 g (212 mmol) of crushed sodium hydroxide. The mixture was then heated to reflux for 20 hours, the reaction water and the possible residual water were distilled by azeotroping. Subsequently, the mixture was cooled to 90 ° C and 30 ml of water was added together with 100 ml of xylene. The mixture was then heated to 100 ° C under stirring for 1 hour, cooled to 80 ° C and the aqueous phase was separated. ~ The organic phase was washed with 40 ml of IN aqueous HCl solution and 50 ml of water and subsequently, with a solution of 2 g (50 mmol) of sodium hydroxide in 40 ml of water. Next, 16.8 g (45 mmol) of 2-Chloro-4,6-bis (dibutylamino) -1,3,5-triazine and 9.4 g (235 mmol) of crushed sodium hydroxide and the mixture was heated to reflux for 24 hours, the separation of the water of reaction and the possible residual water was made by azeotropation.

The mixture was cooled to 60 ° C and 50 ml of water was added. After stirring for 1 hour at 60 ° C, the aqueous phase was separated and the organic phase was washed once with 50 ml of water and dried over anhydrous sodium sulfate. After filtration and evaporation in vacuo (70 ° C / 1 mbar), a light yellow solid product with a melting point of 130-137 ° C was obtained.

Mn (per GPC) = 2501 g / mol Mw / Mn = 1.53 The GPC analysis shows a chromatogram as in Figure 1.

Example V-2: The compound was prepared analogously to the method described in Example V-1, using the appropriate reagents in the appropriate molar amounts. The product obtained has a melting point of 118-130 ° C.

Mn (per GPC) = 2100 g / mol Mw / Mn = 1.35 The GPC analysis shows a chromatogram as in Figure 2. A further specific example of a compound of the formula (I) which can be prepared according to the described method described above is Example A: Pigmented thermoplastic olefin (TPO) granules were prepared by mixing a polyolefin blend (polypropylene containing an ethylene-propylene copolymer; ® Polytrope TTP 518-01 from A. A. Schulman, Inc .; Akron, Ohio, USA) with the additives listed below in a single screw extruder ®Superior / WMP 1"(2.54 cm) with a screw for all general purpose (L / D of 24: 1) at 200 ° C , cooling in a water bath and granulating Before the extrusion and molding, the additives were mixed dry in a drum dryer.

Additives: 0.25% ** of ® Red 3B (Pigment Red 177, Color Index 65300), 0.05% * 'of pentaerythritol tetracis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], 0.05 % * 'of tris [2, 4-di-tert-butylphenyl] phosphite, 0. 2% * 'of 2- (2'-hydroxy-3,5'-di-tert-amylphenyl) -benzotriazole), 0.2% *' of bis (l-octyloxy-2, 2,6,6,6-tetramethyl) sebacate -4-piperidyl), 0.1% * 'of calcium stearate, approximately 10% *' of talc and 0.2% * 'of the compounds of Example Vl or V-2. * 'percent by weight based on the polyolefin mixture The resulting granules were molded into 2"x2" (5.08 cm x 5.08 cm) plates of 1524 mm thickness at approximately 190 ° C in an Injection Molding Machine ®B0Y 30M. The test plates are mounted in metal frames and exposed in a ®Alas Xenon-Arc-O-Meter Ci65 at a black panel temperature of 70 ° C, 0.55 W / m2 at 340 nanometers and 50% relative humidity with intermittent cycles of light / dark and water spray (SAE J 1960 Test Procedure of the ® Automotive Engineers Society-Exterior Automotive Conditions). The specimens were tested at approximately 652 kilojoule intervals for brightness measurements in an Applied Color Systems spectrophotometer according to the reflectance mode according to ASTM D 2244-79. Gloss measurements were conducted on an Opacity / Gloss ®BYK-GARDENER meter at 60 ° C according to ASTM D 523. Stabilized samples show good gloss retention and good color change resistance after UV exposure .

Example B: Greenhouse Application - Luminous Stabilization Properties in Low Density Polyethylene (LDPE) - External Exposure Compound of Example Vl was mixed via a masterbatch with LDPE granules (Riblene® EF 2100 V, distributed by ®ENICHEM, Milan , Italy), characterized by a density of 0.921g / cm3 and a rate of flow in the molten state (190 ° C / 2.16 kg) of 0.25, in a slow mixer. The masterbatch was pre-prepared by extruding the LDPE powder and 10% by weight of the compound of Example V-1. The mixtures were extruded by blowing at 200 ° C, and 150 micron thick films were obtained, which contained 0.4% of the compound of Example V-1. The films were exhibited on the south-facing roof of a greenhouse in Pontecchio Marconi (Bologna, Italy) without support, or galvanized iron support on a pine wood support. The following pesticides were applied in the greenhouse: (VAPAM® (®BASLINI "SpA, Treviglio / BG, Italy), which is an aqueous solution of 382 g per liter of metam-sodium having the formula CH3-NH-CS- SNa).

SESMETRIN® (®BIMEX SpA, Isola / VI, Italy) which is an aqueous solution at 23.75% (% by weight / weight) of permethrin which has the formula The greenhouse was treated with a solution of 4 liters of ®VAPAM in 10 liters of water every 6 months, and with ®SESMETRIN (5 g in 5 liters of water) every month. During the exposition, the operation was periodically evaluated by measuring the residual elongation (in% of the initial lengthening of the film of the new LDPE), by means of a dynamometer at constant speed. The results reveal that the compound of Example V-1 stabilizes the LDPE film in excellent fashion.

Example C: Stabilization of Low Density Polyethylene (LDPE) films - Exterior Exposure. The compound of Example V-1 was mixed via a master batch with LDPE granules (Riblene® EF 2100 V, distributed by ®ENICHEM, Milan, Italy) characterized by a density of 0.921g / cm 3 and a melt flow index. (190 ° C / 2.16 kg) 0.25), in a slow mixer.

The masterbatch was pre-prepared by extruding pulverized LDPE and 10% by weight of the compound of Example V-1. The mixtures were extruded by blowing at 200 ° C, and films of 150 microns thickness were obtained, containing 0.3% or 0.4% of the compound of Example V-1. The films were exposed in Pontecchio Marconi (approximately 110 kLys / year) and irradiated without support, on galvanized iron or on the support of pine wood, without application of pesticides. The surfaces of the films were set at an inclination of 45 ° to the south. During the exposition, the operation was evaluated periodically by measuring the residual elongation (in% of initial elongation of the film of the new LDPE), by means of a dynamometer at constant speed. The results reveal that the compound of Example V-1 stabilizes the LDPE films in an excellent manner.

Example D: Polypropylene grade fiber containing 0.05% by weight of calcium stearate and 0.05% by weight of di (hydrogenated tallow) hydroxylamine as base stabilization, mixed dry with the stabilizer indicated in Table 1 • and then melted in a compound way at 234 ° C in granules. The fully granulated formulated resin was then isolated at 246 ° C or 274 ° C to fiber using a laboratory model ®Hills fiber extruder. The 41 filament spun tow stretched at a ratio of 1: 3: 2 to give a final denier of 615/41. "Socks" were made from stabilized propylene in a ®Lawson-Hemphill Analysis Weaver and exposed in an Xenon-Arc-Weather-O-meter Atlas using the SAE J1885 Automotive Interior Conditions at 89 ° C bpt, 0.55 kW / cm2 at 340 nm with a cycle without dew. The failure in this test was determined by observing the physical failure of the sock when it was "scratched" with a blunt glass rod. The more time passes for this catastrophic failure to occur, the more effective the stabilizer is. The results are shown in Table 1.

Table 1:

Claims (29)

1. A compound of the formula (I) characterized in that n is a number from 2 to 14; the radicals Ri independently of one another hydrogen, a hydrocarbyl radical or -ORi is -O; the radicals R 2 are independently from each other C 2 -C 2 alkylene, CC 2 alkenylene, C 5 -C cycloalkylene, C 5 -C 7 cycloalkylene (C 1 -C alkylene), C 1 -C 6 alkylene-cycloalkylene of C5-C7), phenylendi (C? -C4 alkylene) or C4-C? 2 alkylene interrupted by 1,4-piperazinyl, -0- or > N-X? with Xi being acyl of C1-C3.2 or (C1-C12 alkoxy) carbonyl or having one of the definitions of R given above except hydrogen; or R2 is a group of formulas (a), (b) or (c); with m being 2 or 3, X 2 being Ci-Ciß alkyl, Cs-C 2 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C 1 -C 4 alkyl; phenyl which is unsubstituted or substituted by 1, 2 or 3 C 1 -C 4 alkyl or C 1 -C 4 alkoxy; C7-Cg phenylalkyl which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C? -C4 alkyl; and the X3 radicals independently of each other being C2-C12 alkylene; the radicals A being independently of one another -OR3, -N (R4) (R5) or a group of the formula (II); R3, Ri and Rs which are identical or different, are hydrogen, Ci-Ciß alkyl, C5-C12 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C? -C alkyl; C3-C18 alkenyl, phenyl which is unsubstituted or substituted by 1, 2 or 3 C1-C4 alkyl or C1-C4 alkoxy; C7-C9 phenylalkyl which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C3-C4 alkyl; tetrahydrofurfuryl or C2-C alkyl which is substituted in the 2, 3 or 4 position by -OH, Ci-Cβ alkoxy, -di (C? -C4 alkyl) amino or a group of the formula (III); / \ Y N- (lll) \ / with Y being -0-, -CH2-, -CH2CH2- or > N-CH3; or -N (R4) (R5) is additionally a group of the formula (III); X is -O- or > N-R6; Re is hydrogen, C 1 -C 8 alkyl, C 3 -C 8 alkenyl, C 5 -C 5 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C 3 -C 4 alkyl; phenylalkyl of C-C9 which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4 alkyl; tetrahydrofurfuryl, or a group of the formula (IV), or C2-C4 alkyl which is substituted at the 2, 3 or 4 position by -OH, Ci-Cß alkoxy, di (C?-C4 alkyl) amino or a group of the formula (III); the radicals R independently have one of the meanings given for R6; and radicals B and B * have one of the meanings given for A independently of one another; with the proviso that in the individual recurring units of the formula (I), each of the radicals B, R, Ri and R2 have the same or different meaning.

2. The compound of the formula (I) according to claim 1, characterized in that the polydispersity Mw / Mn is 1 and n is 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14.

3. The compound of the formula (I) according to claim 1 , characterized in that R is a group of the formula (IV).

4. The compound of the formula (I) according to claim 1, characterized in that Rx is hydrogen, Ci-Ciß alkyl, C5-C18 alkenyl, C5-C18 alkynyl, unsubstituted or substituted C5-C12 cycloalkyl. by C? -C4 alkyl; Cs-C? 2 cycloalkenyl unsubstituted or substituted by C? -C4 alkyl; a bicyclic or tricyclic hydrocarbyl having 6 to 10 carbon atoms or C7-C9 phenylalkyl unsubstituted or substituted on the phenyl by C? -C4 alkyl or -ORi is -O *.

5. The compound of the formula (I) according to claim 1, characterized in that Ri is hydrogen, C1-C12 alkyl or C5-C8 cycloalkyl.

6. The compound of the formula (I) according to claim 1, characterized in that Ri is Ci-Cß alkyl or cyclohexyl. 7. The compound of the formula (I) according to claim 1, characterized in that n is a number from 2 to 6. The compound of the formula (I) according to claim 1, characterized in that n is a number from 2 to 12; R 2 is C 2 -C 2 alkylene, Cs-C cycloalkylene, Cs-C 7di cycloalkylene (C 1 -C 4 alkylene), C 1 -C 4 alkylene-di (Cs-C 7 cycloalkylene) or phenylene (C 1 -C 7 alkylene) C4); Re is hydrogen, Ci-Ciß alkyl, s-C 2 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C 1 -C 4 alkyl; C7-Cg phenylalkyl which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C? -C4 alkyl; tetrahydrofurfuryl, or a group of the formula (IV), or C2-C4 alkyl which is substituted at the 2, 3 or 4 position by -OH, Ci-Cs alkoxy, di (C? -C4 alkyl) amino or a group of the formula (III); and R is a group of the formula (IV). 9. The compound of the formula (I) according to claim 1, characterized in that R2 is alkylene of • C2-C? Or, cyclohexylene, cyclohexylendi (alkylene of C? -C4), alkylene of C? ~ C dicyclohexylene, or phenylenedi (C1-C4 alkylene); R3, R4 and R5, which are identical or different, are hydrogen, C1-C12 alkyl, C5-C7 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C?-C4 alkyl, C3 alkenyl -C? 2, phenyl which is unsubstituted or substituted by 1, 2 or 3 C 1 -C 4 alkyl; or benzyl which is unsubstituted or substituted on the phenyl by C 1 -C 4 alkyl; tetrahydrofurfuryl or C 2 -C 3 alkyl which is substituted in the 2 or 3 position by -OH, C 1 -C 4 alkoxy, di (C 1 -C 4 alkyl) amino or a group of the formula (III); or -N (R4) (R5) is additionally a group of the formula (III); and R6 is hydrogen, C? -C12 alkyl, cycloalkyl C5-C7 which is not substituted or substituted by 1, 2 or 3 C1-C4 alkyl; benzyl which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C 1 -C 4 alkyl; tetrahydrofurfuryl, a group of the formula (IV) or C2-C3 alkyl which is substituted at the 2 or 3 position by -OH, C1-C4 alkoxy, di (C? -C4 alkyl) amino or a group of the formula (III). 10. The compound of the formula (I) according to claim 1, characterized in that R2 is C2-Cs alkylene; R3, R4 and R5, which are identical or different, are hydrogen, C? -C8 alkyl, cyclohexyl which is unsubstituted or substituted by methyl; C3-C8 alkenyl, phenyl which is unsubstituted or substituted by methyl; benzyl; tetrahydrofurfuryl or C2-C3 alkyl which is substituted in the 2 or 3 position by -OH, C? -C4 alkoxy, dimethylamino, diethylamino or 4-morpholinyl; or -N (R4) (R5) is further 4-morpholinyl; and R6 is hydrogen, Ci-Cß alkyl, cyclohexyl which is unsubstituted or substituted by methyl; benzyl, tetrahydrofurfuryl, a group of the formula (IV) or C2-C3 alkyl which is substituted in the 2 or 3 position by -OH, C? -C4 alkoxy, dimethylamino, diethylamino or 4-morpholinyl. 11. The compound of formula (I) according to claim 1, characterized in that n is a number from 2 to 6; R2 is C2-C6 alkylene; A is -N (R4) (R5) or a group of the formula (II); R4 and R5, which are identical or different, are hydrogen, Ci-Cs alkyl, 2-hydroxyethyl or 2-methoxyethyl or -N (R4) (R5) is further 4-morpholinyl; X is > NR6; R 6 is C 1 -C 4 alkyl; and the radicals B and B * independently of one another have the definitions given for A. 12. The compound of the formula (I) according to claim 1, characterized in that B * is different from B and. each of the radicals B, R, Ri and R2 have the same meaning in the individual recurring units of the formula (I). 13. The mixture containing at least three different compounds of the formula (I) according to claim 2, characterized in that they vary only by the variable n, the mixture has a polydispersity Mw / Mn of 1.1 to 1.

7. The mixture according to claim 13, characterized in that the mixture has a polydispersity Mw / Mn from 1.1 to 1.6. 15. A mixture containing a monodisperse compound of the formula (la), a monodisperse compound of the formula (Ib) and a monodisperse compound of the formula (Ic), such compounds differ only in the number of repeating units, ( the ) (le) the radicals A, B, B *, R, Ri and R2 are as defined in claim 1. 16. The mixture according to the claim 15, characterized in that it has a polydispersity Mw / Mn of 1.1 to 1.7.

17. The mixture according to claim 15, characterized in that Ri is methyl, octyl or cyclohexyl; R2 is C2-Ce alkylene; A is -N (R) (R5) or a group of the formula (II) with Ri being defined above; R and Rs, which are identical or different, are hydrogen, C 1 -C 8 alkyl, 2-hydroxyethyl or 2-methoxyethyl or -N (R 4) (R 5) is further 4-morpholinyl; X is > NR6; Re is C? -C4 alkyl; R is a group of the formula (IV) with Ri being defined above; and the radicals B and B * independently of one another have the same meanings given for A. 18. The mixture according to claim 15, characterized in that A and B *, which are identical or different, are -N ( C? -C8) 2 or a group

19. The mixture according to claim 15, characterized in that Ri is methyl, octyl or cyclohexyl; R2 is hexamethylene; A and B * are butylamino; B is N- (1-methoxy-2, 2,6,6-tetramethyl-4-piperidyl) butylamino, N- (1-octyloxy-2, 2,6,6-6-tetramethyl-4-piperidyl) butylamino or N- (l-cyclohexyloxy-2,2,6,6-tetramethyl-4-piperidyl) butylamino; and R is 1-methoxy-2, 2, 6,6-tetramethyl-4-piperidyl, 1-octyloxy-2,2, 6,6-tetramethyl-4-piperidyl or 1-cyclohexyloxy-2,2,6, 6-tetramethyl-4-piperidyl. . 20. The method for preparing a mixture according to claim 13, characterized in that it comprises 1) reacting a compound of the formula (A) with n compound of the formula (B) in a stoichiometric ratio to obtain a compound of the formula (C); 2) by reacting a compound of formula (C) with a compound of formula (B) in a molar ratio of 1: 2 to 1: 3, to obtain a mixture of at least three different monodisperse compounds of formula (D) with n being 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, or 14; 3) reacting the mixture obtained in 2) with a compound of the formula (E) in a stoichiometric ratio to obtain a mixture as defined in claim 13; the radicals A, B, B *, R1, Ri and R2 being as defined in claim 1 and reactions 1) to 3) are carried out in an organic solvent in the presence of an inorganic base. The method according to claim 20, characterized in that the molar ratio of the compound of the formula (C) to the compound of the formula (B) is 1: 2 and n is 2, 4 and 6. 22. A mixture obtainable by the method according to claim 20.

23. A composition characterized in that it contains an organic material susceptible to degradation induced by light, heat or oxidation and at least one compound of the formula (I) according to claim 1. 24. The composition according to claim 23, characterized in that all of the compounds of the formula (I) being present in the composition has a polydispersity Mw / Mn of 1 to 1.7. 25. The composition according to claim 23, characterized in that the organic material is a synthetic polymer. 26. The composition according to claim 23, characterized in that the organic material is polyethylene or polypropylene. 27. A method for stabilizing an organic material against degradation induced by light, heat or oxidation, characterized in that it comprises incorporating at least one compound of the formula (I) into the organic material according to claim 1. 28. The compound of the formula (D) characterized in that the polydispersity Mw / Mn is 1; n is 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14; the radicals Ri independently of one another hydrogen, a hydrocarbyl radical or -ORi is -O; the radicals R 2 are independently from each other C 2 -C 2 alkylene, C 4 -C 2 alkenylene, C 5 -C 7 cycloalkylene, C 5 -C 7 cycloalkylene (C 1 -C 4 alkylene), C 4 -C 4 alkylene (C5-C cycloalkylene), phenethylene (C1-C4 alkylene) or C4-C12 alkylene interrupted by 1,4-piperazinyl, -O- or > N-XX with Xi being C1-C12 acyl or (C1-C12 alkoxy) carbonyl or having one of the definitions of R4 given above except hydrogen; or R2 is a group of formulas (a), (b) or (c); with m being 2 or 3, X 2 being C 1 -C 8 alkyl, C 5 -C 12 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C 1 -C 4 alkyl; phenyl which is unsubstituted or substituted by 1, 2 or 3 C 1 -C 4 alkyl or C 1 -C 4 alkoxy; C7-C9 phenylalkyl which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4 alkyl; and the X3 radicals independently of each other being C2-C2 alkylene; B is -OR3, -N (R4) (R5) or a group of the formula (II); R3, R4 and R5, which are identical or different, are hydrogen, Ci-Ciß alkyl, C5-C12 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C1-C4 alkyl; C 3 -C 8 alkenyl, phenyl which is unsubstituted or substituted by 1, 2 or 3 C 1 -C 4 alkyl or C 1 -C 4 alkoxy; C7-C9 phenylalkyl which is unsubstituted or substituted on the phenyl by 1, 2 or 3 C? -C4 alkyl; tetrahydrofurfuryl or C2-C4 alkyl which is substituted in the 2, 3 or 4 position by -OH, C? -C8 alkoxy, di (C1-C4 alkyl) amino or a group of the formula (III); with Y being -0-, -CH2-, -CH2CH2- or > N-CH3; or -N (R4) (R5) is additionally. a group of the formula (III); X is -0- or > N-R6; Re is hydrogen, Ci-Ciß alkyl, C3-C18 alkenyl, C5-C12 cycloalkyl which is unsubstituted or substituted by 1, 2 or 3 C1-C4 alkyl; C7-Cg phenylalkyl which is not substituted or substituted on the phenyl by 1, 2 or 3 C1-C4 alkyl; tetrahydrofurfuryl, or a group of the formula (IV), or C2-C4 alkyl which is substituted in the 2, 3 or 4 position by -OH, C? -C8 alkoxy, di (C? -C4 alkyl) amino or a group of the formula (III); the radicals R independently have one of the meanings given for R6; with the proviso that e the individual recurring units of the formula (D), each of the radicals B, R, Ri and R2 have the same or different meaning. 29. The mixture containing at least three different compounds of the formula (D) according to claim 28, characterized in that they vary only by the variable n, the mixture has a polydispersity Mw / Mn of 1.1 to 1.7. SUMMARY OF. THE INVENTION The compounds of the formula (I) wherein the polydispersity Mw / Mn is for example 1; n is 1 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14; the radicals Ri is for example Ci-Ciß alkyl or C5-C12 cycloalkyl, "R2 is, for example, C2-C2 alkylene, the independently independent radicals A and B * of -OR3, N- (R4) (R5) or a group of the formula R3, R4 and R5, which are identical or different, are for example hydrogen or Ci-Ciß alkyl or -N (R4) (R5) is additionally a group of the formula? [sj- with - - V_ / being -O-, -CH2-, -CH2CH2- or > N-CH3; X is -O- or > N-R6; R6 is, for example, hydrogen or C? ~ C? 8 alkyl; R is preferably a group of the formula and B has one of the meanings given for A; with the proviso that in the individual recurring units of the formula (I), each of the radicals B, R, Ri and R2 have the same or different meaning. The indicated compounds are useful as photostabilizers, thermal stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers.