EP1742917A1

EP1742917A1 - Use of pyridindione derivatives for protecting organic material against detrimental effects of light

Info

Publication number: EP1742917A1
Application number: EP05730055A
Authority: EP
Inventors: Simon Schambony; Alban Glaser; Rüdiger Sens
Original assignee: BASF SE
Current assignee: BASF SE
Priority date: 2004-04-16
Filing date: 2005-04-14
Publication date: 2007-01-17
Also published as: US20070208112A1; CA2562378A1; JP2007532604A; CN1942444A; WO2005100319A1

Abstract

The invention relates to the use of pyridindione derivatives of general formula (I) and optionally the tautomers thereof, wherein R1 is hydrogen, possibly substituted and/or possibly heteroatoms containing alkyl, alkenyl or alkynyl or possibly substituted and/or heteroatoms containing cycloalkyl, cycloalkenyl, heterocycloalkyl, aryl or heteroaryl; R2, independently of R1, is R1 or NR4R5; R4 and R5 independently of each other and of R1, are R1 or COR6, A is CN, COR7, COOR7 or CONR7R8; R6, R7, R8 independently of each other and of R1, are R1, n is values for 1, 2, 3 or 4; R3 for n equal to 1 is hydrogen, possibly substituted and/or possibly heteroatoms containing alkyl, alkenyl or alkynyl or possibly substituted and/or heteroatoms containing cycloalkyl, cycloalkenyl, heterocycloalkyl and for n unequal to 1 is n-valent possibly heteroatoms containing aliphatic or cycloaliphatic residue. Compositions containing a quantity of at least one type of pyridindione derivative of formula (I) protecting an organic material against detrimental effects of light, at least one type of organic material and pyridindione derivatives of formula (I) are also disclosed.

Description

I

Use of pyridinedione derivatives to protect organic material from the harmful effects of light

description

The present invention relates to the use of pyridinedione derivatives for protecting organic material from the damaging effects of light, compositions which contain an amount protecting at least one such pyridinedione derivative and at least one organic material from the damaging effects of light, and to such pyridinedione derivatives.

Animate and inanimate organic material such as human or animal skin, human or animal hair, paper, food, perfumes, cosmetics, plastics, plastic dispersions, lacquers, photographic emulsions, photographic layers etc. is in many cases sensitive to the damaging one Exposure to light, especially in relation to the amount of ultraviolet (UV) radiation contained in daylight. The UVA component of UV radiation, i.e. H. the range from above 320 to 400 nm, the UVB portion of the UV radiation, d. H. the range from 280 to 320 nm and the even shorter wavelength components of UV radiation.

This damage usually shows up as yellowing, discoloration, cracking or embrittlement of the material. An important area of application for light stabilizers is therefore the protection of plastics. Plastic containers and plastic films find z. B widely used as packaging materials. For aesthetic reasons, plastics with high light transmission in the visible wavelength range from 400 to 750 nm are becoming increasingly important as packaging materials. However, transparent, possibly slightly colored plastics are generally transparent to the UV radiation contained in daylight, so that both the packaging material and the packaged products age under the influence of light. Depending on the content, the negative change in the packaged content can be seen, for example, in a change in appearance such as yellowing and discoloration, in a change in taste and / or smell and / or in the breakdown of ingredients. The shelf life of foods, perfumes and cosmetics can be greatly reduced. The stabilizers added to the plastic of packaging should therefore provide satisfactory protection of both the plastic itself and the packaged product against light-induced aging processes. Plastics are also widely used in combination with glass in composite materials that are transparent in the visible wavelength range. Such composite systems are found e.g. B. use in automotive and architectural glazing. To an increasing extent, such automotive glazing is said to emit radiation in the wavelength Absorb gen range below 400 nm, for example, to protect the interior of the car and the occupants from UV radiation.

The light stabilizers known from the prior art have a number of disadvantages. A major disadvantage is the often too short duration of the protective effect, since the known light stabilizers often have too little UV stability. Another disadvantage is that many known light stabilizers have a clearly perceptible intrinsic color in the visible wavelength range, so that a plastic stabilized with these light stabilizers appears pale yellow. In addition, many light stabilizers are unable to filter out the long-wave component of UVA radiation and / or have an insufficient efficiency of radiation absorption, i.e. they have extinction coefficients that are too small. In addition, many light stabilizers are not sufficiently soluble in the application medium. The resulting crystallization of the light stabilizer can cause the polymer to become cloudy. Further disadvantages are the often poor synthetic accessibility of the light stabilizers, their inadequate formulation, their low sublimation resistance and / or their low fastness to migration.

Pyridinedione derivatives are already known as dyes and dye precursors.

This is how the publication by F. Würthner, Synthesis 1999, No. 12, 2104-2133 with the synthesis of merocyanine dyes, which also includes 5-phenylaminomethylene-1-butyl-4-methyl-3-cyano-2,6-dioxo-1, 2,5,6-tetrahydropyridine place.

In the document WO 03/063151 A2, i.a. the use of tautomeric pyridinediones of the formulas

described in optical recording layers, where the radicals R ₅ and R ₆ according to Examples 1 to 50 disclosed in this document are all mono- or divalent aromatic or heteroaromatic groups and R ^ is an ethyl radical.

The use of pyridinedione derivatives to protect organic material from the harmful effects of light, however, is not known from the prior art. Since there is still a great need for stabilizers and stabilizer compositions, the object of the present invention was to provide stabilizers which act as UV absorbers for protecting organic material, for example plastics, plastic dispersions, paints, photographic emulsions, photographic layers, paper , human or animal skin, human or animal hair, food etc. over a long period of time. The stabilizers should preferably absorb with a high absorbance in the UVA range, in particular also in the long-wave UVA range above 360 nm, be photostable and / or thermostable and have no or only a slight intrinsic color in the visible wavelength range. Furthermore, the stabilizers should have favorable performance properties and / or be easy to manufacture.

Surprisingly, it has now been found that the use of pyridinedione derivatives of the general formula I

and optionally their tautomers,

in what mean

R ^{1 is} hydrogen, optionally substituted and / or optionally containing alkyl, alkenyl or alkynyl or optionally substituted cycloalkyl, cycloalkenyl, heterocycloalkyl, aryl or heteroaryl,

R ^2, independently of R ^1, the meaning of R ¹ or NR ⁴ R ⁵ , R ⁴ , R ⁵ independently of one another and independently of R ^1, the meaning of R ¹ or COR ⁶ ,

A CN, COR ⁷ , COOR ⁷ or CONR ⁷ R ⁸ ,

R ⁶ , R ⁷ , R ⁸ independently of one another and independently of R ¹ the meaning of R ¹ , n values of 1, 2, 3 or 4, R ³ for n is 1: hydrogen, optionally substituted and / or optionally containing alkyl, alkenyl or alkynyl or optionally substituted cycloalkyl, cycloalkenyl or heterocycloalkyl, for n not 1: an n-valent aliphatic or cycloaliphatic radical, which may be heteroatoms can contain

protects organic material from the harmful effects of light.

Alkyl includes straight-chain or branched alkyl, such as, for example, methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, 2-pentyl, 2-methyl-butyl, 3-methylbutyl , 1, 2-dimethylpropyl, 1, 1-dimethylpropyl, 2,2-dimethylpropyl, 1-ethylpropyl, n-hexyl, 2-hexyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1, 2 -Dimethylbutyl, 1, 3-dimethylbutyl, 2,3-dimethylbutyl, 1, 1-dimethylbutyl, 2,2-dimethylbutyl, 3,3-dimethylbutyl, 1, 1, 2-trimethylpropyl, 1, 2.2 -Trimethylpropyl, 1-ethylbutyl,

2-ethylbutyl, 1-ethyl-2-methylpropyl, n-heptyl, 2-heptyl, 3-heptyl, 2-ethylpentyl, 1-propylbutyl, n-octyl, 2-ethylhexyl, 2-propylheptyl, 1, 1, 3,3-tetramethylbutyl, nonyl, decyl, n-undecyl, n-dodecyl, n-tridecyl, iso-tridecyl, n-tetradecyl, n-hexadecyl, n-octadecyl and n-eicosyl.

Alkyl also includes alkyl whose carbon chain can be interrupted by one or more non-adjacent groups selected from -O-, -S-, -NZ ¹ - or -NZ ⁵ -, -CO- and -S0 ₂ -, ie the alkyl groups are terminated by carbon atoms. Z ¹ and Z ⁵ here represent hydrogen, C _r C ₁₈ alkyl, aryl or heteroaryl, where aryl and heteroaryl are each unsubstituted or carry one or more substituents which are selected from the group consisting of C ₁ -C ₆ alkyl , CC ₆ alkoxy, hydroxy, carboxyl and cyano.

Alkenyl comprises straight-chain and branched alkenyl groups which, depending on the chain length, can carry one or more double bonds. Preferred are C ₂ -C ₂₀ , particularly preferred C ₂ -C ₁₀ alkenyl groups such as vinyl, allyl or methallyl. Alkenyl also includes substituted alkenyl groups, which e.g. B. can carry one, two, three, four or five substituents. Suitable substituents are e.g. B. cycloalkyl, heterocycloalkyl, aryl, heteroaryl, nitro, cyano, halogen, amino, mono- or di- (-C ₂₀ alkyl) amino.

Alkynyl comprises straight-chain and branched alkynyl groups which, depending on the chain length, can carry one or more triple bonds. Preferred are C ₂ -C ₂ o, particularly preferably C ₂ -C ₀ alkynyl groups such as ethynyl, propin-3-yl or pro- pin-1-yl. Alkynyl also includes substituted alkynyl groups, which e.g. B. can carry one, two, three, four or five substituents. Suitable substituents are e.g. B. cycloalkyl, heterocycloalkyl, aryl, heteroaryl, nitro, cyano, halogen, amino, mono- or di- (-C ₂₀ alkyl) amino.

Cycloalkyl includes both unsubstituted and substituted cycloalkyl groups, preferably C ₅ -C ₈ cycloalkyl groups, such as cyclopentyl, cyclohexyl, cycloheptyl or cyclooctyl. In the case of a substitution, the cycloalkyl groups can carry one or more, for example one, two, three, four or five, d-Ce-alkyl groups.

Examples of C ₅ -C ₈ cycloalkyl which is unsubstituted or carries one or more CrC ₆ alkyl groups are cyclopentyl, 1-, 2- and 3-methylcyclopentyl, 1-, 2- and 3-ethylcyclopentyl, Cyclohexyl, 1-, 2-, 3- and 4-methylcyclohexyl, 1-, 2-, 3- and 4-ethyl-cyclohexyl, 1-, 3- and 4-propylcyclohexyl, 1-, 3- and 4- isopropylcyclohexyl, 1-, 3- and 4-butylcyclohexyl, 1-, 3- and 4-sec-butylcyclohexyl, 1-, 3- and 4-tert-butylcyclohexyl, cycloheptyl, 1-, 2-, 3- and 4 -Methylcycloheptyl, 1-, 2-, 3- and 4-ethylcycloheptyl, 1-, 3- and 4-propylcycloheptyl, 1-, 3- and 4-isopropylcycloheptyl, 1-, 3- and 4-butylcyclo-heptyl, 1- , 3- and 4-sec-butylcycloheptyl, 1-, 3- and 4-tert-butylcycloheptyl, cyclooctyl, 1-, 2-, 3-, 4- and 5-methylcyclooctyl, 1-, 2-, 3-, 4 - and 5-ethylcyclooctyl and 1-, 3-, 4- and 5-propylcyclooctyl.

Cycloalkenyl includes both unsubstituted and substituted cycloalkenyl groups, preferably C ₅ -C ₈ cycloalkenyl groups, such as 1-cyclopenten-1-yl, 1-cyclohexen-1-yl, 1-cyclohepten-1-yl and 1-cycloocten-1 -yl and the positionally isomeric radicals 1-cyclopenten-3-yl, 1-cyclopenten-4-yl, 1-cyclohexen-3-yl, 1-cyclohexen-4-yl, 1-cyclohepten-3-yl, 1 -Cyclohepten-4-yl, 1-cyclohepten-5-yl, 1-cycloocten-3-yl, 1-cycloocten-4-yl and 1-cycloocten-5-yl. In the case of a substitution, the cycloalkenyl groups can carry one or more, for example one, two, three, four or five, CC ₆ alkyl groups.

Heterocycloalkyl comprises non-aromatic, unsaturated or fully saturated, cycloaliphatic groups with generally five to eight ring atoms, preferably five or six ring atoms, in which one, two or three of the ring carbon atoms are hetero atoms selected from oxygen, sulfur and the group -NZ- are replaced and which is unsubstituted or substituted with one or more, for example one, two, three, four, five or six CrCe alkyl groups. Examples of such heterocycloaliphatic groups are pyrrolidinyl, piperidinyl, 2,2,6,6-tetramethylpiperidinyl, in particular 2,2,6,6-tetramethylpiperidin-4-yl, imidazolidinyl, pyrazolidinyl, oxazolidinyl, morpholinyl, thiazolidinyl , isothiazolidinyl, isoxazolidinyl, pipe- razinyl, tetrahydrothiophenyl, dihydrothienyl, tetrahydrofuranyl, dihydrofuranyl, tetra- hydropyranyl, 1, 2-oxazolinyl, 1, 3-oxazolinyl and dioxanyl called, wherein Z corresponds to the grouping -NZ- in its meaning Z ¹ , Aryl comprises mono- or polynuclear aromatic hydrocarbon radicals which may be unsubstituted or substituted and is preferably phenyl, tolyl, xylyl, mesityl, duryl, naphthyl, fluorenyl, anthracenyl, phenanthrenyl or naphthyl, particularly preferably phenyl or naphthyl, these aryl groups in the case of a substitution, they can generally carry one, two, three, four or five, preferably one, two or three, substituents.

Heteroaryl comprises unsubstituted or substituted, heteroaromatic, mononuclear or polynuclear groups, preferably the groups pyridyl, quinolinyl, acridinyl, pyridazinyl, pyrimidinyl, pyrazinyl, pyrrolyl, imidazolyl, pyrazolyl, indolyl, purinyl, indazolyl, benzotriazolyl, 1, 2,3 -Triazolyl, 1, 3,4-triazolyl and carbazolyl, where these heterocycloaromatic groups can generally carry one, two or three substituents in the case of a substitution.

Among n-valent organic residues include to understand those radicals which formally consist of the alkyl, alkenyl or alkynyl or optionally substituted cycloalkyl, cycloalkenyl and heterocycloalkyl radicals mentioned above, optionally substituted and / or optionally containing heteroatoms, by abstracting one (n = 2), two (n = 3) or three (n = 4) further hydrogen atoms.

A group of the general formula is also suitable as a divalent, trivalent or tetravalent organic radical:

in which mean:

A is a chemical single bond, -O-, -S-, -NY-, -CO-, -SO ₂ -, CτCι ₈ - alkylene, the carbon chain of which is selected by one or more non-adjacent groups selected from -O-, -S -, -NY ^' -, -CO- and -SO ₂ - interrupted and / or substituted by one or more C ₁ -C ₆ -alkyl radicals,

RL R _I ^' independently of one another hydrogen, CτC ₆ alkyl, CrCe alkoxy, hydroxy, carboxyl or cyano

X single chemical bond,

Y and Y ^' independently of one another are hydrogen, C ₁ -C ₆ -alkyl, aryl or heteroaryl, where aryl and heteroaryl are each unsubstituted or carry one or more substituents which are selected from the group consisting of C ₁ -C ₆ -alkyl, d-Ce alkoxy, hydroxy, carboxyl and cyano, and

m, m 'values of 0, 1, 2, 3 or 4, with the proviso that m + m' results in values of 2, 3 or 4,

Divalent organic residues are:

C ₂ -C ₃₀ alkylene, the carbon chain of which is selected by one or more non-adjacent groups selected from -O-, -S-, -NZ ⁶ -, -CO- and -S0 ₂ -, in particular selected by one or more non-adjacent groups can be interrupted from -O-, -NZ ⁶ - and -CO-, preferably C ₂ -C ₁₂ alkylene, the carbon chain of which can be interrupted by one or more non-adjacent groups selected from -O- and -NZ ⁶ -, particularly preferably C ₂ -C ₁₂ alkyl,

C ₅ -C ₈ cycloalkylene which is unsubstituted or carries one or more C Cβ-alkyl groups, in particular one or more CC ₄ alkyl groups, preferably cyclopentylene or cyclohexylene, each of which is unsubstituted or one or more C 1 -C ₄ -alkyl groups bear groups, particularly preferably cyclopentylene or cyclohexylene, in particular ice- or trans-cyclohexane-1,4-diyl,

5- to 8-membered heterocycloalkylene which is unsubstituted or carries one or more CrCe alkyl groups, in particular one or more C 1 -C ₄ -alkyl groups, preferably divalent piperidinyl which is unsubstituted or one or more CC -AI-alkyl groups pen bears,

where Z ^{6 is} hydrogen, C ^ C ^ alkyl, in particular CC ₆ alkyl, aryl or heteroaryl, wherein aryl and heteroaryl are each unsubstituted or carry one or more substituents which are selected from the group consisting of Cι-C ₆ -Alkyl, CrCβ-alkoxy, hydroxy, carboxyl and cyano.

The following can be mentioned as trivalent or tetravalent organic residues:

tri- or tetravalent C ₂ -C ₃₀ alkyl, the carbon chain of which is selected by one or more non-adjacent groups selected from -O-, -S-, -NZ ⁶ -, -CO- and -S0 ₂ -, in particular by one or more non-adjacent groups selected from -O-, -NZ ⁶ - and -CO- can be interrupted, preferably trivalent or tetravalent C ₂ -C ₁₂ alkyl, the carbon chain of which is selected by one or more non-adjacent groups selected from -O- and -NZ ⁶ - can be interrupted, particularly preferably trivalent or tetravalent C ₂ -C ₁₂ alkyl,

trivalent or tetravalent C ₅ -C ₈ cycloalkyl which is unsubstituted or carries one or more CrCe alkyl groups, in particular one or more CC ₄ alkyl groups, preferably trivalent or tetravalent cyclopentyl or trivalent or tetravalent cyclohexyl, which is unsubstituted or carries one or more dd-alkyl groups, particularly preferably tri- or tetravalent cyclopentyl or tri- or tetravalent cyclohexyl,

trivalent or tetravalent 5- to 8-membered heterocycloalkyl which is unsubstituted or one or more C ₁ -C ₆ -alkyl groups, in particular one or more CC ₄ -

Bears alkyl groups, preferably trivalent or tetravalent piperidinyl which is unsubstituted or bears one or more d-d-alkyl groups,

where Z ^{6 is} hydrogen, -CC ₁₈ alkyl, in particular CrCe alkyl, aryl or heteroaryl, wherein aryl and heteroaryl are each unsubstituted or carry one or more substituents which are selected from the group consisting of CC ₆ alkyl, d-Ce alkoxy, hydroxy, carboxyl and cyano.

Compounds of the formula I, where

R ^{1 is} hydrogen, dC ₃₀ alkyl, the carbon chain of which can be interrupted by one or more non-adjacent groups selected from -O-, -S-, -NZ ¹ -, -CO- and -S0 ₂ - and / or that optionally substituted one or more times with the same or different radicals which are selected from the group consisting of cyano, amino, hydroxy, halogen, carboxyl, CC ₁₈ alkoxycarbonyl, d-Ci ₈ alkanoyloxy, aryl, heterocycloalkyl and heteroaryl, where the aryl, heterocycloalkyl and heteroaryl groups are unsubstituted or carry one or more substituents which are selected independently of one another from the group consisting of d-C ₈ alkyl and C ₁ -C ₆ alkoxy, C ₅ -C ₈ cycloalkyl or 5- to 8-membered heterocycloalkyl which are unsubstituted or carry one or more dC ₆ alkyl groups, or aryl or heteroaryl which are unsubstituted or carry one or more radicals which are independently selected from the group consisting of d-Cι-8-alkyl, dC ₆ alkoxy, cyano, CONZ ² Z ³ and C0 ₂ Z ⁴ ,

R ^{2 is} independently of R ¹ the meaning of R ¹ or NR ⁴ R ⁵ ,

R ⁴ , R ⁵ independently of one another and independently of R ¹ the meaning of R ¹ or COR ⁶ ,

A CN, COR ⁷ , COOR ⁷ or CONR ⁷ R ⁸ , R ⁶ , R ⁷ , R ⁸ independently of one another and independently of R ¹ the meaning of R ¹ , n values of 1, 2, 3 or 4 and R ³ for n is 1: hydrogen, C _r C ₃₀ alkyl, the carbon chain of which is interrupted by one or more non-adjacent groups selected from -O-, -S-, -NZ ⁵ -, -CO- and -SO ₂ - can and / or which is optionally substituted one or more times with the same or different radicals which are selected from the group consisting of cyano, amino, hydroxyl, halogen, carboxyl, C 1 -C ₈ -alkoxycarbonyl, C 1 -C ₁₈ -alkanoyloxy, Aryl, heterocycloalkyl and heteroaryl, where the aryl, heterocycloalkyl and heteroaryl groups are unsubstituted or carry one or more substituents which are selected independently of one another from the group consisting of d -CC ₈ alkyl and dC ₆ -alkoxy, or C ₅ - C ₈ cycloalkyl or 5- to 8-membered heterocycloalkyl, which are unsubstituted or carry one or more dC ₆ alkyl groups, for n not equal to 1: n-valent C ₂ -C ₃₀ alkyl, the carbon chain of which is not adjacent by one or more Groups selected from -O -, -S-, -NZ ⁶ -, -CO- and -SO ₂ - can be interrupted, or n-valent C ₅ -C ₈ cycloalkyl or n-valent 5- to 8-membered heterocycloalkyl, which are unsubstituted or carry one or more dC ₆ alkyl groups, where Z ¹ , Z ² , Z ³ , Z ⁴ , Z ⁵ and Z ⁶ each independently represent hydrogen, Crds-alkyl, aryl or heteroaryl, aryl and heteroaryl each being unsubstituted are or carry one or more substituents selected from the group consisting of dC ₆ alkyl, dC ₆ alkoxy, hydroxy, carboxyl and cyano. Suitable C _r C ₁₈ alkyl and dC ₆ alkyl radicals as substituents have already been mentioned as examples at the beginning of the alkyl radicals. dC ₆ alkoxy residues and the C ₁ -C ₁₈ alkoxy residues of dC ₈ alkoxycarbonyl are formally derived from the corresponding alkyl residues by adding a terminal oxygen atom. The d -CC ₈ alkanoyl residues of the dC ₁₈ alkanoyloxy residues are obtained formally by replacing a terminal methylene group of the corresponding alkyl residue with a carbonyl group.

Examples of aryl which is unsubstituted or carries one or more independent d-ds-alkyl, dC ₆ -alkoxy or cyano radicals are 2-, 3- and 4-methylphenyl, 2,4-, 2 , 5-, 3,5- and 2,6-dimethylphenyl, 2,4,6-trimethylphenyl, 2-, 3- and 4-ethylphenyl, 2,4-, 2,5-, 3,5- and 2, 6-diethylphenyl, 2,4,6-triethylphenyl, 2-, 3- and 4- Propylphenyl, 2,4-, 2,5-, 3,5- and 2,6-dipropylphenyl, 2,4,6-tripropylphenyl, 2-, 3- and 4-isopropylphenyl, 2,4-, 2,5- , 3,5- and 2,6-diisopropylphenyl, 2,4,6-triisopropylphenyl, 2-, 3- and 4-butylphenyl, 2,4-, 2,5-, 3,5- and 2,6-dibutylphenyl , 2,4,6-tributylphenyl, 2-, 3- and 4-isobutylphenyl, 2,4-, 2,5-, 3,5- and 2,6-diisobutylphenyl, 2,4,6-triisobutylphenyl, 2-, 3- and 4-sec-butylphenyl, 2,4-, 2,5-, 3,5- and 2,6-di-sec-butylphenyl, 2,4,6-tri-sec-butylphenyl, 2 -, 3- and 4-tert-butylphenyl, 2,4-, 2,5-, 3,5- and 2,6-di-tert-butylphenyl and 2,4,6-tri-tert-butylphenyl; 2-, 3- and 4-methoxyphenyl, 2,4-, 2,5-, 3,5- and 2,6-dimethoxyphenyl, 2,4,6-trimethoxyphenyl, 2-, 3- and 4-ethoxyphenyl , 2,4-, 2,5-, 3,5- and 2,6-diethoxyphenyl, 2,4,6-triethoxyphenyl, 2-, 3- and 4-propoxyphenyl, 2,4-, 2,5-, 3,5- and 2,6-dipropoxyphenyl, 2-, 3- and 4-isopropoxyphenyl, 2,4-, 2,5-, 3,5- and 2,6-diisopropoxyphenyl, 2-, 3- and 4- butoxyphenyl; 2-, 3- and 4-cyanophenyl.

In a further preferred embodiment, compounds of the formula I are used in which

R ^{1 is} hydrogen, dC ₁₅ -alkyl, the carbon chain of which may be interrupted by one or more non-adjacent groups selected from -O-, -NZ ¹ - and -CO- and / or which may be substituted one or more times with the same or different radicals which are selected from the group consisting of cyano, amino, hydroxy, halogen, carboxyl, dC ₆ -alkoxycarbonyl, CrC ₆ -alkanoyloxy and aryl, the aryl group being unsubstituted or carrying one or more substituents which are selected independently of one another are selected from the group consisting of dC ₆ - alkyl and dC ₆ -alkoxy, cyclopentyl or cyclohexyl which are unsubstituted or carry one or more dC ₆ alkyl groups, that is piperidinyl unsubstituted or substituted one or more dC ₆ - carrying alkyl groups, or phenyl , which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of d-Ce alkyl, CC ₆ alkoxy, cyano, CONZ ² Z ³ and C0 ₂ Z ⁴ , R ² independently of R ¹ are R ¹ or NR ⁴ R ⁵ ,

R ⁴ , R ⁵ independently of one another and independently of R ¹ the meaning of R ¹ or COR ⁶ , A CN, COR ⁷ , COOR ⁷ or CONR ⁷ R ⁸ ,

R ⁶ , R ⁷ , R ⁸ independently of one another and independently of R ¹ the meaning of R ¹ , n values of 1, 2, 3 or 4 and R ³ for n is 1: hydrogen, d-ds-alkyl, the carbon chain of which may be interrupted by one or more non-adjacent groups selected from -O-, -NZ ⁵ - and -CO- and / or which may be one or more is substituted several times with identical or different radicals, which are selected from the group consisting of cyano, amino, hydroxy, halogen, carboxyl, CC ₆ -alkoxycarbonyl, CC ₆ -alkanoyloxy and aryl, the aryl group being unsubstituted or one or more Carries substituents which are independently selected from the group consisting of CrCe-alkyl and d-Ce-alkoxy, cyclopentyl or cyclohexyl, which are unsubstituted or carry one or more dC ₆ -alkyl groups, or piperidinyl, which is unsubstituted or one or carries several dC ₆ alkyl groups, for n not equal to 1: n-valent C ₂ -C ₃₀ alkyl, the carbon chain of which is selected from one of several non-adjacent groups selected from -O-, -NZ ⁶ - and -CO- - chen se in, or n-valent C ₅ -C ₈ cycloalkyl or n-valent 5- to 8-membered heterocycloalkyl, which are unsubstituted or carry one or more dC -alkyl groups, where Z ¹ , Z ² , Z ³ , Z ⁴ , Z ⁵ and Z ⁶ each independently represent hydrogen, CrC ₁₈ alkyl, aryl or heteroaryl, where aryl and heteroaryl are each unsubstituted or carry one or more substituents which are selected from the group consisting of C _r C ₆ -Alkyl, dC ₆ - alkoxy, hydroxy, carboxyl and cyano.

In a further preferred embodiment, compounds of the formula I are used in which mean

R ^{1 is} hydrogen, dC ₈ -alkyl which is optionally substituted one or more times with identical or different radicals which are selected from the group consisting of halogen and aryl, the aryl group being unsubstituted or bearing one or more substituents which independently of each other are selected from the group consisting of dC ₄ -alkyl and dd-alkoxy, cyclopentyl or cyclohexyl, which are unsubstituted or carry one or more dd-alkyl groups, piperidinyl which is unsubstituted or carries one or more dd-alkyl groups, or phenyl which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of d-C -alkyl, dd-alkoxy and cyano,

R ^{2 is} independently of R ¹ the meaning of R ¹ or NR ⁴ R ⁵ ,

A CN,

R ⁶ independently of R ^{1 has} the meaning of R ¹ , n values of 1, 2, 3 or 4 and

R ³ for n is 1: hydrogen, d-Cβ-alkyl, the carbon chain of which may be interrupted by one or more non-adjacent groups selected from -O-, -NZ ⁵ - and -CO- and / or this may be one or more times is substituted with the same or different radicals which are selected from the group consisting of hydroxy, halogen, carboxyl, d-Ce-alkoxycarbonyl, dC ₆ -alkanoyloxy and aryl, the aryl group being unsubstituted or carrying one or more substituents which are independent of one another are selected from the group consisting of dd-alkyl and dC ₄ -alkoxy, cyclopentyl or cyclohexyl, which are unsubstituted or carry one or more dd-alkyl groups, or piperidinyl, which is unsubstituted or carries one or more dd-alkyl groups, for n not equal to 1: n-valent C ₂ -C ₁₂ alkyl, the carbon chain of which may be interrupted by one or more non-adjacent groups selected from -O- and -NZ ⁶ -, n-valent cyclopentyl or n-valent cyclohexyl, which are unsubstituted or one or carry several dC ₄ alkyl groups, or n-valent 5- to 8-membered heterocycloalkyl which is unsubstituted or carries one or more dC alkyl groups, where Z ⁵ and Z ^{6 represent} hydrogen or dC ₆ alkylI. In a further preferred embodiment, compounds of the formula I are used in which mean

R ^{1 is} hydrogen, dd-alkyl, partially fluorinated or perfluorinated dd-alkyl or phenyl which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of d-C-alkyl, dd-alkoxy and cyano,

R ^{2 is} independently of R ¹ the meaning of R ¹ or NR ⁴ R ⁵ ,

A CN,

R ⁶ independently of R ^{1 has} the meaning of R \ n values of 1, 2, 3 or 4 and

R ³ for n is 1: hydrogen, dC ₈ -alkyl, the carbon chain of which can be interrupted by a group -O- and / or which is optionally substituted one or more times with the same or different radicals which are selected from the group consisting of Hydroxy, fluorine, carboxyl, dC ₄ -alkoxycarbonyl, dd-alkanoyloxy and aryl, where the aryl group is unsubstituted or carries one or more substituents which are independent of one another are selected from the group consisting of dd-alkyl and dd-alkoxy, cyclopentyl or cyclohexyl, which are unsubstituted or carry one or more dd-alkyl groups, or piperidinyl, which is unsubstituted or carries one or more dd-alkyl groups, for n not equal to 1 : N-valent C ₂ -C ₁₂ alkyl, n-valent cyclopentyl, n-valent cyclohexyl or n-valent piperidinyl, which is unsubstituted or carries one or more dd-alkyl groups.

To prepare the compounds of the formula I, hydroxypyridones with dimethylformamide can be prepared in accordance with the following equation in accordance with German Offenlegungsschrift DE 20 25 327

to the 5-dimethylaminomethylene-substituted pyridinedione compounds and these then according to WO 03/063151 A2 with the desired n-fold amines according to the reaction equation

implement to the target connections.

The term “protection” of organic material is to be understood broadly in the context of the present application. On the one hand, it comprises the stabilization of an organic material against the damaging effects of light in order to prevent or at least delay the degradation processes of the organic material which are initiated by light. For this purpose, the organic material is mixed with a light-protecting agent. In the context of the present application, however, the term protection also means the indirect protection of organic materials, an organic material containing an agent which protects against light surrounds other organic material at least partially so as to reduce the damaging effect of light for the organic material behind it.

The pyridinedione derivatives of the formula I are used according to the invention to protect organic material from the damaging action of light, in the context of the present application organic material means both animate organic material and inanimate organic material. Animate organic material is, for example, human or animal skin; inanimate organic material is, for example, human or animal hair. Examples of inanimate organic material are also foods, cleaning agents, perfumes, textiles, paper, furniture, carpets, molded plastic parts such as electrical housings, cosmetic preparations such as ointments, creams, gels, emulsions and lotions, pharmaceutical formulations such as drops, emulsions, solutions, Pills, tablets and suppositories, lacquers, photographic emulsions, photographic layers and in particular plastics and plastic dispersions.

Pyridinedione derivatives of the formula I are preferably used to protect inanimate organic material, in particular to protect plastics. The pyridinedione derivatives of formula I are characterized by high compatibility with plastics, so that, among other things, also the optical properties of the polymer are not impaired.

Preferred plastics and plastic mixtures (polymer blends) are those which are transparent in the undyed state in the visible wavelength range and can be processed into highly transparent, crystal-clear packaging or packaging materials. These include both homopolymers and copolymers as well as physical ones

Blends of polymers (polymer mixtures), where copolymers are obtained by (jointly) copolymerizing two or more different monomers. Depending on the manufacturing and / or processing method, copolymers such as polyester can of course also contain transesterification products. As part of the manufacturing and / or processing method, grafting or grafting can also take place in the case of copolymers.

The pyridinedione derivatives of the formula I to be used in accordance with the invention not only protect plastics against the effects of light, but — in particular in the case of transparent plastics — also revitalized and / or inanimate organic material that is at least partially protected from the plastic protected with the pyridinedione derivatives of the formula I. surrounded by the harmful effects of light.

Another object of the present invention is therefore the use of at least one pyridinedione derivative of the general formula I or one of its preferred embodiments for producing a layer which absorbs the ultraviolet light. The material of the layer is preferably thermoplastic see plastics, which are used in particular as packaging materials or in glazing.

Thermoplastic plastics that should be mentioned in particular are polycarbonates, polyesters, polyvinyl acetals, polyolefins, poly (meth) acrylates, polyacrylonitrile and polyvinyl chloride; furthermore copolymers which are obtained by copolymerization of the monomers on which the plastics mentioned are based, and polymer blends made from the plastics mentioned.

Suitable plastics contain at least one polyester, preferably at least one linear polyester. Suitable polyesters and copolyesters are described in EP-A-0678376, EP-A-0 595413 and US 6,096,854, to which reference is hereby made. As is known, polyesters are condensation products of one or more polyols and one or more polycarboxylic acids. In linear polyesters, the polyol is a diol and the polycarboxylic acid is a dicarboxylic acid. The diol component can be selected from ethylene glycol, 1,4-cyclohexanedimethanol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 2,2-dimethyl-1,3-propanediol, 1,6-hexanediol, 1,2-Cyclohexanediol, 1,4-Cyclohexanediol, 1,2-CyclohexanedimethanoI and 1,3-Cyclohexanedimethanol can be selected. Also suitable are diols whose alkylene chain is interrupted one or more times by non-adjacent oxygen atoms. These include diethylene glycol, triethylene glycol, dipropylene glycol, tripropylene glycol and the like. As a rule, the diol contains 2 to 18 carbon atoms, preferably 2 to 8 carbon atoms. Cycloaliphatic diols can be used in the form of their ice or t-isomer or as a mixture of isomers. The acid component can be an aliphatic, alicyclic or aromatic dicarboxylic acid. The acid component of linear polyesters is generally selected from terephthalic acid, isophthalic acid, 1,4-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, succinic acid, glutaric acid, adipic acid, sebacic acid, 1,12-dodecanedioic acid, 2,6-naphthalenedicarboxylic acid and mixtures thereof , Of course, the functional derivatives of the acid component, such as esters, for example the methyl esters, anhydrides or halides, preferably chlorides, can also be used. Preferred polyesters are polyalkylene terephthalates and polyalkylene naphthalates, which can be obtained by condensing terephthalic acid or naphthalenedicarboxylic acid with an aliphatic diol.

Particularly preferred polyalkylene terephthalates are polyethylene terephthalates

(PET), which is obtained by condensation of terephthalic acid with ethylene glycol. PET can also be obtained by transesterification of dimethyl terephthalate with ethylene glycol with the elimination of methanol to give bis (2-hydroxyethyl) terephthalate and its polycondensation with liberation of ethylene glycol. Other preferred polyesters are polybutylene terephthalate (PBT), which can be obtained by condensing terephthalic acid with 1,4-butanediol, polyethylene-2,6-naphthalate (PEN), poly-1,4-cyclohexanedimethylene terephthalate (PCT) and Copolyester of polyethylene terephthalate with cyclohexanedimethanol (PDCT), copolyester of polybutylene terephthalate with cyclohexanedimethanol. Also preferred are copolymers, transesterification products and physical mixtures (blends) of the aforementioned polyalkylene terephthalates. Particularly suitable thermoplastic molding compositions are selected from poly- or copolycondensates of terephthalic acid such as poly- or copolyethylene terephthalate (PET or CoPET or PETG), poly (ethylene-2,6-naphthalate) s (PEN) or PEN / PET copolymers and PEN / PET blends. The copolymers and blends mentioned can also contain portions of transesterification products, depending on their production process.

Other suitable plastics contain at least one polycarbonate polymer selected from the group consisting of polycarbonates, polycarbonate copolymers and physical blends based on polycarbonates with acrylic-butadiene-styrene copolymers, acrylonitrile-styrene-acrylic ester copolymers, polymethyl methacrylates, polybutyl acrylates , Polybutymethacrylates, poly (butylene terephthalates) and polyethylene terephthalates.

Polycarbonates arise e.g. B. by condensation of phosgene or carbonic acid esters such as diphenyl carbonate or dimethyl carbonate with dihydroxy compounds. Suitable dihydroxy compounds are aliphatic or aromatic dihydroxy compounds. Examples of aromatic dihydroxy compounds are bisphenols such as 2,2-bis (4-hydroxyphenyl) propane (bisphenol-A), tetraalkylbisphenol-A, 4,4- (meta-phenylenediisopropyl) diphenol (bisphenol M), 4, 4- (para-phenylenedifsopropyl) diphenol, 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane (BP-TMC), 2,2-bis (4-hydroxyphenyl) -2- phenylethane, 1,1-bis (4-hydroxyphenyl) cyclohexane (bisphenol-Z) and, if appropriate, mixtures thereof. The polycarbonates can be branched by using small amounts of branching agents. Suitable branching agents include phloroglucin, 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) -hepten-2, 4,6-dimethyl-2,4,6-tri (4-hydroxyphenyl) - heptane; 1,3,5-tri- (4-hydroxyphenyl) benzene; 1,1,1-tri (4-hydroxyphenyl) heptane; 1,3,5-tri- (4-hydroxyphenyl) -benzoI; 1,1,1-tri- (4-hydroxyphenyl) ethane; Tri- (4-hydroxyphenyl) phenylmethane, 2,2-bis [4,4-bis (4-hydroxyphenyl) cyclohexyl] propane; 2,4-bis (4-hydroxyphenyl-isopropyI) -phenol; 2,6-bis (2-hydroxy-5'-methylbenzyl) -4-methylphenol; 2- (4-hydroxyphenyl) -2- (2,4-dihydroxyphenyl) propane; Hexa- (4- (4-hydroxyphenyl-isopropyl) phenyl) orthoterephthalic acid ester; Tetra (4-hydroxy-phenyl) methane; Tetra- (4- (4-hydroxyphenyl-isopropyl) phenoxy) methane; a, a ', a "-Tris- (4-hydroxyphenyl) -1,3,5-triisopropylbenzene; 2,4-dihydroxybenzoic acid; trimesic acid; cyanuric chloride; 3,3-bis- (3-methyl-4-hydroxyphenyl) - 2-oxo-2,3-dihydroindole, 1,4-bis (4 ', 4 "-dihydroxytriphenyl) - methyl) -benzene and in particular 1,1,1-tri- (4-hydroxy-phenyl) -ethane and Bis- (3-methyl-4-hydroxyphenyl) -2-oxo-2,3-dihydroindole. Phenols such as phenol, alkylphenols such as cresol and 4-tert-butylphenol, chlorophenol, bromophenol, cumylphenol or mixtures thereof are suitable, for example, for chain termination. The proportion of chain terminators is usually 1 to 20 mol%, per mol of dihydroxy compound.

Other suitable plastics contain at least one polymer derived from α, β-unsaturated acids and their derivatives, e.g. B. Poiy (meth) acrylate such as poly-methyl methacrylate (PMMA) and polyethylene methacrylate.

Other suitable plastics contain at least one vinyl aromatic homo- or copolymer such as polystyrene (PS) or a copolymer of styrene or α-methylstyrene with dienes and / or acrylic derivatives, such as. B. styrene-butadiene, styrene-acrylonitrile (SAN), styrene-ethyl methacrylate, styrene-butadiene-ethyl acrylate, styrene-acrylonitrile-methacrylate, acrylonitrile-butadiene-styrene (ABS) or methymethacrylate-butadiene-styrene (MBS).

Other suitable plastics contain at least one polymer which is derived from unsaturated alcohols and amines or from their acyl derivatives or acetals, such as polyvinyl acetate (PVAC), polyvinyl alcohol (PVAL), polyvinyl formal (PVFM) or polyvinyl butyral (PVB). Polyvinyl acetals are accessible by reacting polyvinyl alcohol with aldehydes. The latter two compounds PVFM and PVB can accordingly be prepared by reacting polyvinyl alcohol with formaldehyde or butyraldehyde.

In the case of laminated glasses, two or more glass panes are glued together using polyvinyl butyral films. The polyvinyl butyral molding composition generally has an average molecular weight of more than 70,000, preferably about 100,000 to 250,000. The polyvinyl butyral generally has a residual content of less than 19.5, preferably about 17 to 19% by weight of hydroxyl groups calculated as polyvinyl alcohol; a residual content of 0 to 10%, preferably 0 to 3% of the remaining ester groups, calculated as polyvinyl ester. An exemplary PVB is commercially available under the name Butvar® from Solutia, Inc. of St. Louis, Mo. Any glass is suitable as long as it is transparent to light in the visible wavelength range. Such glasses include common clear soda lime glass, IR radiation reflecting coated glass or IR radiation absorbing glass, see e.g. B. US 3,944,352 and US 3,652,303. With regard to the design of laminated glass, reference is hereby made in full to WO 02/077081, in particular to pages 28 to 32.

Other suitable plastics are polyolefins, these comprising all polymers which are composed of olefins without further functionality, such as low or high density polyethylene, polypropylene, linear polybutene-1 or polyisobutylene or polybutadiene, and copolymers of mono- or diolefins. Preferred polyolefins are the homopolymers and copolymers of ethylene, and the homopolymers and copolymers of propylene.

Ethylene polymers:

Suitable polyethylene (PE) homopolymers are e.g.

PE-LD (LD = low density), available e.g. B according to the high pressure process (ICI) at 1,000 to 3,000 bar and 150 to 300 ° C with oxygen or peroxides as catalysts in autoclaves or tubular reactors. Heavily branched with branches of different lengths, crystallinity 40 to 50%, density 0.915 to 0.935 g / cm ³ , average molecular weight up to 600000 g / mol.

PE-LLD (LLD = linear low density), available with metal complex catalysts in the low pressure process from the gas phase, from a solution (e.g. petrol), in a suspension or with a modified high pressure process. Weakly branched with unbranched side chains, molecular weights higher than with PE-LD.

PE-HD (HD = high density), available according to the medium pressure (Phillips) and low pressure (Ziegler) process. According to Phillips at 30 to 40 bar, 85 to 180 ° C, chromium oxide as a catalyst, molar masses about 50,000 g / mol. According to Ziegler at 1 to 50 bar, 20 to 150 ° C, titanium halides, titanium esters or aluminum alkyls as catalysts, molar mass about 200,000 to 400,000 g / mol. Carried out in suspension, solution, gas phase or mass. Very weakly branched, crystallinity 60 to 80%, density 0.942 to 0.965 g / cm ³ .

PE-HD-HMW (HMW = high molecular weight), available according to the Ziegler, Phillips or gas phase method. High density and high molecular weight.

- PE-HD-UHMW (UHMW = ultra high molecular weight) available with modified Ziegler catalyst, molar mass 3 000 000 to 600 000 g / mol.

Polyethylene which is produced in a gas phase fluidized bed process using (usually supported) catalysts, e.g. Lupolen® (Basell).

Also particularly suitable is polyethylene, which is produced using metallocene catalysts. Such polyethylene is e.g. commercially available as Luflexen® (Basell).

All commercially available ethylene copolymers are suitable as ethylene copolymers, for example Luflexen® types (Basell), Nordel® and Engage® (Dow, DuPont). As co- monomers are e.g. B. α-olefins with 3 to 10 carbon atoms, especially propylene, but-1-ene, hex-1-ene and oct-1-ene, and also alkyl acrylates and methacrylates with 1 to 20 carbon atoms in Alkyl radical, especially butyl acrylate. Other suitable comonomers are dienes such as butadiene, isoprene and octadiene. Other suitable comonomers are cycloolefins, such as cyclopentene, norbornene and dicyclopentadiene.

The ethylene copolymers are usually statistical copolymers or block or impact copolymers. Suitable block or impact copolymers of ethylene and comonomers are e.g. B. Polymers in which in the first stage a homopolymer of the comonomer or a random copolymer of the comonomer, for example with up to 15% by weight of ethylene, and then in the second stage a comonomer-ethylene copolymer with ethylene contents of 15 to Polymerized 80 wt .-%. As a rule, so much of the comonomer-ethylene copolymer is polymerized in that the copolymer produced in the second stage has a proportion of 3 to 60% by weight in the end product.

The polymerization to produce the ethylene-comonomer copolymers can be carried out using a Ziegler-Natta catalyst system. However, catalyst systems based on metallocene compounds or on the basis of polymerization-active metal complexes can also be used.

Propylene polymers:

In the following, the term polypropylene should be understood to mean both homopolymers and copolymers of propylene. Copolymers of propylene contain minor amounts of monomers copolymerizable with propylene, for example C ₂ -C ₈ -alk-1-enes such as ethylene, but-1-ene, pent-1-ene or hex-1-ene. Two or more different comonomers can also be used.

Suitable polypropylenes include Homopolymers of propylene or copolymers of propylene with up to 50% by weight of other alk-1-enes polymerized in with up to 8 carbon atoms. The copolymers of propylene are statistical copolymers or block or impact copolymers. If the copolymers of propylene have a random structure, they generally contain up to 15% by weight, preferably up to 6% by weight, other alk-1-enes with up to 8 C atoms, in particular ethylene, but-1 -en or a mixture of ethylene and but-1-ene.

Suitable block or impact copolymers of propylene are e.g. B. Polymers in which in the first stage a propylene homopolymer or a random copolymer of propylene with up to 15% by weight, preferably up to 6% by weight, of other alk-1-enes with up to 8 ° C. -Atoms and then in the second stage a propylene-ethylene copolymer with ethylene contents of 15 to 80 wt .-%, wherein the propylene Ethylene copolymer can additionally contain further C ₄ -C ₈ -alk-1-enes, polymerized. As a rule, so much of the propylene-ethylene copolymer is polymerized in that the copolymer produced in the second stage has a proportion of 3 to 60% by weight in the end product.

The polymerization for the production of polypropylene can be carried out using a Ziegler-Natta catalyst system. In particular, catalyst systems are used which, in addition to a titanium-containing solid component a), also have cocatalysts in the form of organic aluminum compounds b) and electron donor compounds c).

However, catalyst systems based on metallocene compounds or based on polymerization-active metal complexes can also be used.

The production of the polypropylenes is usually carried out by polymerization in at least one, often also in two or more reaction zones connected in series (reactor cascade), in the gas phase, in a suspension or in a liquid phase (bulk phase). The usual reactors used for the polymerization of C ₂ -C ₈ -alk-1-enes can be used. Suitable reactors include continuously operated stirred tanks, loop reactors, powder bed reactors or fluidized bed reactors.

The polymerization for the preparation of the polypropylenes used is carried out under customary reaction conditions at temperatures from 40 to 120 ° C., in particular from 50 to 100 ° C. and pressures from 10 to 100 bar, in particular from 20 to 50 bar.

Suitable polypropylenes generally have a melt flow rate (MFR), according to ISO 1133, of 0.1 to 200 g / 10 min., In particular 0.2 to 100 g / 10 min., At 230 ° C. and under a weight of 2.16 kg.

Other suitable plastics contain at least one polyolefin. Preferred polyolefins contain at least one copolymerized copolymer, which is selected from ethylene, propylene, 1-butene, isobutylene, 4-methyl-1-pentene, butadiene, isoprene and mixtures thereof. Homopolymers, copolymers of the olefin monomers mentioned and copolymers of at least one of the olefins mentioned are suitable as the main monomer and other monomers (such as vinylaromatics) as comonomers.

Suitable polyolefins are low density polyethylene homopolymers (PE-LD) and polypropylene homopolymers and polypropylene copolymers. Suitable polypropylenes are, for example, biaxially oriented polypropylene (BOPP) and crystallized polypropylene. Other suitable plastics contain at least one polyurethane. Polyurethanes are generally addition products from at least one diisocyanate and at least one diol component, which moreover also have higher-functionality isocyanates, e.g. B. triisocyanate, and higher functional polyols. Suitable isocyanates are aromatic diisocyanates such as 2,4- and 2,6-tolylene diisocyanate (TDI) and isomer mixtures thereof, tetramethylxylene diisocyanate (TMXDI), xyiene diisocyanate (XDI), diphenylmethane-4,4'-diisocyanate (MDI), and aliphatic diisocyanates such as Dicylohexylmethane 4,4'-diisocyanate (H- | ₂ MDI), tetramethylene diisocyanate, hexamethylene diisocyanate (HMDI), isophorone diisocyanate (IPDI), trimethylhexamethylene diisocyanate and mixtures thereof. Preferred diisocyanates include hexamethylene diisocyanate (HMDI) and isophorone diisocyanate. Triisocyanates, e.g. B. triphenylmethane ^{triisocyanate-4,4,,} 4 "and the cyanurates and biurets of the aforementioned diisocyanates.

Suitable diols are glycols with preferably 2 to 25 carbon atoms. These include 1, 2-ethanediol, 1, 2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1, 6-hexanediol, 1,10-decanediol, diethylene glycol, 2.2, 4-trimethylpentanediol-1, 5, 2,2-dimethylpropanediol-1, 3, 1, 4-dimethylolcyclohexane, 1,6-dimethylolcyclohexane, 2,2-bis (4-hydroxyphenyl) propane (bisphenol A), 2,2 - bis (4-hydroxyphenyl) butane (bisphenol B) or 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane (bisphenol C).

Polyols are also useful starting materials for the production of polyurethanes. These are trihydric (so-called triols) and higher alcohols. They generally have 3 to 25, preferably 3 to 18, carbon atoms. These include glycerin, trimethylolethane, trimethylolpropane, erythritol, pentaerythritol, sorbitol and their alkoxylates.

Other suitable plastics can also contain physical blends of the aforementioned polymers.

The pyridinedione derivatives of the formula I are advantageously used to stabilize thermoplastics, the transmission of which for electromagnetic radiation of the wavelength between 420 nm and 800 nm in the uncolored state is preferably greater than 90%.

The present invention also relates to the use of at least one pyridinedione derivative of the general formula I for the production of a layer which absorbs the ultraviolet light. The absorbent layer is preferably transparent in the wavelength range between 420 and 800 nm. The preferably transparent layer absorbing the ultraviolet light is based on a thermoplastic. Suitable thermoplastics are thermoplastics which contain at least one polymer selected from the group consisting of polyesters, polycarbonates, polyolefins, polyvinyl acetals, polystyrene, copolymers of styrene or .alpha.-methylstyrene with dienes and / or acrylic derivatives and mixed forms of the aforementioned polymers.

The transparent layer can, for example, be part of architectural glazing, car glazing or a film to be glued to glass or plastic for insulation or filtering purposes, in particular part of a laminated glass in car glazing. The plastic film preferably contains a polyvinyl acetal, in particular polyvinyl butyral.

The pyridinedione derivative of the formula I contained in the laminated glass acts as a UV absorber to protect revitalized organic and inanimate organic material, so that, for example, the driver and the inanimate organic material present in the vehicle are protected from the damaging effects of ultraviolet radiation , Examples of possible damage are erythema or sunburn with animate organic material or yellowing, discoloration, cracking or embrittlement with inanimate organic material.

Optionally, the plastic additionally contains at least one further light stabilizer which absorbs light radiation in the UV-A and / or UV-B range and / or further (co) stabilizers. Of course, the additionally used light stabilizer as well as any (co) stabilizers used must be compatible with the pyridinedione derivative of the formula I. They are preferably colorless in the visible range or have only a slight intrinsic color. The light stabilizers or (co) stabilizers which may also be used preferably have high migration fastness and temperature resistance.

Suitable light stabilizers and further (co) stabilizers are selected, for example, from groups a) to s):

a) 4,4-diarylbutadienes, b) cinnamic acid esters, c) benzotriazoles,) hydroxybenzophenones, e) diphenylcyanoacrylates, f) oxamides, g) 2-phenyl-1, 3,5-triazines; h) antioxidants, i) nickel compounds j) sterically hindered amines, k) metal deactivators, I) phosphites and phosphonites, m) hydroxylamines, n) nitrones, o) amine oxides, p) benzofuranones and indolinones, q) thiosynergists, r) peroxide-destroying compounds and s) basic costabilizers. Group a) of 4,4-diarylbutadienes includes, for example, compounds of the formula A.

The compounds are known from EP-A-916 335. The substituents R ₁₀ and / or Rn are preferably dC ₈ alkyl and C ₅ -C ₈ cycloalkyl.

Group b) of the cinnamic acid esters includes, for example, 2-isoamyl 4-methoxycinnamate, 2-ethylhexyl 4-methoxycinnamate, methyl-α-methoxycarbonylcinnamate, methyl-α-cyano-β-methyl-p-methoxycinnamate, butyl-α- cyano-β-methyl-p-methoxy-cinnamate and methyl-α-methoxycarbonyl-p-methoxycinnamate.

Group c) of the benzotriazoles includes, for example, 2- (2'-hydroxyphenyl) benzotriazoles such as 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 - chlorobenzotriazole, 2- (3'-sec-butyl-5 ^, -tert-butyl-2'-hydroxyphenyl) benzotriazole, 2- (2'-hydroxy-4'-octyloxyphenyl) benzotriazole, 2- (3rd ', 5'-di-tert-amyl-2'-hydroxyphenyl) benzotriazole, 2- (3', 5'-bis (α, α-dimethylbenzyl) -2'-hydroxyphenyl) benzotriazole, 2- (3rd '- tert-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-methoxyca rbonylethyl) phenyl) benzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5 '- (2-octyloxycarbonylethyI) phenyl) benzotriazole, 2- (3'-tert-butyl-5' - [2 - (2-ethylhexyloxy) carbonyethyl] -2'-hydroxyphenyl) benzotriazole, 2- (3'-dodecyl-2'-hydroxy-5'-methylphenyl) benzotriazole and 2- (3'-tert-butyl-2 ' -hydroxy-5 ^, - (2-isooctyloxycarbonylethyI) -phenylbenzotriazole, 2,2'-methylene-bis [4- (1, 1, 3,3-tetramethylbutyl) -6- benzotriazol-2-yl-phenol]; the product of the esterification of 2- [3'-tert-butyl-5 '- (2-methoxycarbonylethyl) -2'-hydroxyphenyl] -2H-benzotriazole with polyethylene glycol 300;

[R-CH ₂ CH ₂ -COO (CH ₂ ) ₃ ] ₂ , with R = 3'-tert-butyl-4 ^, -hydroxy-5'-2H-benzotriazol-2-yl-phenyl and mixtures thereof.

Group d) of the hydroxybenzophenones includes, for example, 2-

Hydroxybenzophenones such as 2-hydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,4-dihydroxybenzophenone, 2,2 ', 4,4'-tetra-hydroxybenzophenone, 2,2'-dihydroxy-4, 4'-dimethoxybenzophenone, 2,2 ^, -dihydroxy-4,4'-dimethoxybenzophenone, 2-hydroxy-4- (2-ethylhexyloxy) benzophenone, 2-hydroxy-4- (n-octyloxy) benzophenone, 2-hydroxy-4 -methoxy-4'-methylbenzophenone, 2-hydroxy-3-carboxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid and its sodium salt, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone-5,5'- bisulfonic acid and its sodium salt.

Group e) of the diphenylcyanoacrylates includes, for example, ethyl 2-cyan-3,3-diphenyl acrylate, which is commercially available, for example, under the name Uvinul® 3035 from BASF AG, Ludwigshafen, 2-ethylhexyl-2-cyan-3, 3-diphenyl acrylate, which is commercially available, for example, as Uvinul® 3039 from BASF AG, Ludwigshafen, and IS-Bis ^ '- cyano-S'.S'-diphenylacryloyOoxyj ^^ - bis' -cyano-S'.S '-diphenyl-acryloyl) oxy] methyl} propane, which is commercially available, for example, under the name Uvinul® 3030 from BASF AG, Ludwigshafen.

Group f) of the oxamides includes, for example, 4,4'-dioctyloxyoxanilide, 2,2'-diethoxyoxanilide, 2,2'-dioctyloxy-5,5 ^, -di-tert-butoxanilide, 2 _> 2'-didodecyloxy-5 , 5'-di-tert-butoxanilide, 2-ethoxy-2'-ethyloxanilide, N, N'-bis (3-dimethylaminopropyl) oxamide, 2-ethoxy-5-tert-butyl-2'-ethoxanilide and its mixture with 2-ethoxy-2'-ethyl-5,4'-di-tert-butoxanilide and mixtures of ortho-, para-methoxy-disubstituted oxanilides and mixtures of ortho- and para-ethoxy disubstituted oxanilides.

Group g) of the 2-phenyl-1,3,5-triazines includes, for example, 2- (2-hydroxyphenyl) 1,3,5-triazines such as 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-methyiphenyl) -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-butyloxypropoxy) phenyl] -4,6-bis (2,4-dimethyl) -1,3,5-triazine, 2- [2-Hydroxy-4- (2-hydroxy-3-octyloxypropoxy) phenyl] -4,6-bis (2,4-dimethyl) -1,3,5-triazine, 2- [4- (dodecyloxy / tridecyloxy-2-hydroxypropoxy) -2-hydroxyphenyl] -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-dimethylphenyl) -1,3,5-triazi n, 2- (2-hydroxy-4- hexyloxyphenyl) -4,6-diphenyl-1, 3,5-triazine, 2- (2-hydroxy-4-methoxyphenyl) -4,6-diphenyl-1, 3,5-triazine, 2,4,6-tris [2-hydroxy-4- (3-butoxy-2-hydroxy-propoxy) phenyl] -1,3,5-triazine and 2- (2-hydroxyphenyl) -4- (4-methoxyphenyl) -6-phenyl-1 , 3,5-triazine.

Group h) of the antioxidants includes, for example:

Alkylated monophenols such as 2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-dimethylphenol, 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- (α-methylcyclohexyl) -4,6-dimethylphenol, 2, 6-dioctadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol, 2,6-di-tert-butyl-4-methoxymethylphenol, unbranched or branched in the side chain nonylphenols such as 2,6-di-nonyl-4-methylphenol , 2,4-dimethyl-6- (1-methylundec-1-yl) phenol, 2,4-dimethyl-6- (1-methylheptadec-1-yl) phenol, 2,4-dimethyl-6- ( 1-methyltridec-1-yl-) phenol and mixtures thereof.

Alkylthiomethylphenols such as 2,4-dioctylthiomethyl-6-tert-butylphenol, 2,4-dioctylthiomethyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ethylphenol, 2,6-didodecylthiomethyl I-4-nonylphenol.

Hydroquinones and alkylated hydroquinones such as 2,6-di-tert-butyl-4-methoxyphenol, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,6-diphenyl-4-octadecyloxyphenol , 2,6-di-tert-butyl hydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4 - ^" hydroxyphenyl stearate, bis (3,5-di-tert-butyl-4-hydroxyphenyl) adipate.

Tocopherols such as α-tocopherol,? -Tocopherol, γ-tocopherol, δ-tocopherol and mixtures thereof (vitamin E).

Hydroxylated thiodiphenyl ethers such as 2,2'-thio-bis (6-tert-butyl-4-methylphenol), 2,2'-thio-bis (4-octylphenol), 4,4'-thio-bis (6- tert-butyl-3-methylphenol), 4,4'-thio-bis (6-tert-butyl-2-methylphenol), 4,4'-thio-bis- (3,6-di-sec-amylphenol), 4,4'-bis (2,6-dimethyl-4-hydroxyphenyl) disulfide.

Alkylidene bisphenols such as 2,2'-methylene-bis (6-tert-butyl-4-methylphenol), 2,2'-methylene-bis (6-tert-butyl-4-ethylphenol), 2,2 ' -Methylene bis [4-methyl-6- (α-methylcyclohexyl) phenol], 2,2'-methylene bis (4-methyl-6-cyclohexylphenol), 2,2'-methylene bis (6-nonyl -4-methylphenol), 2,2'-methylene-bis (4,6-di-tert-butylphenol), 2,2'-ethylidene-bis (4,6-di-tert-butylphenol), 2,2 ' -Ethylidene-bis (6-tert-butyl-4-isobutylphenol), 2,2'-methylene-bis [6- (α-methylbenzyl) -4-nonylphenol], 2,2'-methylene-bis [6- ( α, α-dimethylbenzyl) -4-nonylphenol], 4,4'-methylene-bis (2,6-di-tert-butylphenol), 4,4'-methylene-bis (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-methylphenyl) -3-n -dodecyl mercaptobutane, ethylene glycol bis- [3,3-bis (3-tert-butyl-4-hydroxyphenyl) butyrate], bis (3-tert-butyl-4-hydroxy-5-methyl-phenyl) dicyclopentadiene, bis [2 - (3'-tert-Butyl-2-hydroxy-5-methylbenzyl) -6-tert-butyl-4-methylphenyl] terephthalate, 1,1-bis- (3,5-dimethyl-2-hydroxyphenyl) butane, 2nd , 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.

Benzyl compounds such as, for example, SSS'.δ'-tetra-tert-butyl ^^ '- dihydroxydibenzyl ether, octadecyl-4-hydroxy-3,5-dimethylbenzylmercaptoacetate, tridecyl-4-hydroxy-3,5-di-tert- butylbenzylmercaptoacetate, tris (3,5-di-tert-butyl-4-hydroxybenzyl) amine, 1,3,5-tri- (3,5-di-tert-butyl-4-hydroxybenzyl) -2,4,6- trimethylbenzene, di- (3,5-di-tert-butyl-4-hydroxybenzyl) sulfide, 3,5-di-tert-butyl-4-hydroxybenzyl-mercapto-acetic acid isooctyl ester, bis- (4-tert-butyl-3- hydroxy-2,6-dimethylbenzyl) dithiol terephthalate, 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) isocyanurate, 3,5-di-tert-butyl-4-hydroxybenzyl-phosphoric acid dioctadecyl ester and 3,5-di-tert-butyl-4-hydroxybenzyl-phosphoric acid monoethyl ester, calcium salt.

Hydroxybenzylated malonates such as dioctadecyl 2,2-bis (3,5-di-tert-butyl-2-hydroxybenzyl) maionate, di-octadecyl-2- (3-tert-butyl-4-hydroxy-5-methylbenzyl ) - malonate, 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) malonate.

Hydroxybenzyl aromatics such as 1,3,5-tris (3,5-di-tert-butyl-4-hydroxybenzyl) -2,4,6-trimethylbenzene, 1,4-bis (3,5-di- tert-butyi-4-hydroxybenzyl) - 2,3,5,6-tetramethylbenzene, 2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) phenol.

Triazine compounds such as 2,4-bis (octylmercapto) -6- (3,5-di-tert-butyl-4-hydroxyaniiino) -1,3,5-triazine, 2-octylmercapto-4,6-bis (3rd , 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, 1, 3,5-tris- (3,5-di tert-butyl-4-hydroxybenzyl) isocyanurate, 1, 3,5-tris (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) isocyanurate, 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, 1, 3,5-tris (3,5-dicyclohexyl-4-hydroxybenzyl) isocyanurate.

Benzylphosphonates such as, for example, dimethyl-2,5-di-tert-butyl-4-hydroxybenzylphosphonate, diethyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate ((3,5-bis (1,1-dimethylethyl) - 4-hydroxyphenyI) methyI) lphosphonic acid diethyl ester), dioctad cyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl-5-tert-butyl-4-hydroxy-3-methylbenzylphosphonate, calcium salt of 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid monoethyl ester.

Acylaminophenols such as 4-hydroxy-lauric anilide, 4-

Hydroxystearic acid anilide, 2,4-bis-octylmercapto-6- (3,5-tert-butyl-4-hydroxyanilino) -s-triazine and octyl-N- (3,5-di-tert-butyl-4-hydroxyphenyl) - carbamate.

Esters of jff- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols such as B. 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) oxalic acid diamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo [2.2.2] octane.

Esters of N (5-tert-butyl-4-hydroxy-3-methylphenyl) propionic acid with mono- or polyhydric alcohols, such as. B. with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1, 6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thio-diethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris (hydroxyethyl) isocyanurate, N, N'-bis (hydroxyethyl) oxalic acid diamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo [2.2.2] octane ,

Esters of? - (3,5-dicydohexyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols such as B. 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) oxalic acid diamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo [2.2.2] octane.

Esters of 3,5-di-tert-butyl-4-hydroxyphenylacetic acid with mono- or polyhydric alcohols, such as. B. 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) oxalic acid diamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabiicycio [2.2.2] octane.

Amides of £ - (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid, such as e.g. B. N, N'-bis (3,5-di-tert-butyl-4-hydroxyphenylpropionyl) hexamethylenediamide, N, N'-bis (3,5-di-tert-butyl-4- hydroxyphenylpropionyl) trimethylene diamide, N, N'-bis (3,5-di-tert-butyl-4-hydroxyphenylpropionyl) hydrazide, N, N'-bis [2- (3- [3,5-di-tert- butyI-4-hydroxyphenyl] - propionyloxy) ethyl] -oxamide (e.g. Naugard®XL-1 from Uniroyal).

Ascorbic acid (vitamin C)

Amine antioxidants such as 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-methylheptyl) -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-dimethylbutyI) -N '-phenyl-p-phenylenediamine, N- (1-methylheptyl) -N'-phenyl-p-phenylenediamine, N-cyclohexyl-N'-phenyl-p-phenylenediamine, 4- (p-toluenesulfamoyl) diphenylamine, N, N '-Dimethyl-N, N'-di-sec-butyl-p-phenylenediamine, diphenylamine, N-allyldiphenylamine, 4-isopropoxydiphenylamine, 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-octadecanoylaminophenol - (4-methoxyphenyl l) amine, 2,6-di-tert-butyl-4-dimethylaminomethylphenol, 2,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylmethane, NNN'.N'-tetramethyM ^ '- diaminodiphenylmethane, 1, 2-bis - [(2-methylphenyl) amino] ethane, 1, 2-bis (phenylamino) propane, (o-tolyl) biguanide, bis [4- (1 ', 3'-dimethylbutyl) phenyl] amine, tert-octylated N-phenyl-1-naphthylamine, mixture of mono- and dialkylated tert-butyl / tert-octyldiphenylamines, mixture of mono- and dialkylated nonyldiphenylamines, mixture of mono- and dialkylated dodecyldiphenylamines, mixture of mono- and dialkylated isopropyl / isohexyl- diphenylamines, mixture of mono- and dialkylated tert-butyldiphenylamines, 2,3-dihydro-3,3-dimethyl-4H-1, 4-benzothiazine, phenothiazine, mixture of mono- and dialkylated tert-butyl / tert-octylphenothiazines, Mixture of mono- and dialkylated tert-octyl-phenothiazines, N-allylphenothiazine, N, N, N ', N'-tetraphenyl-1,4-diaminobut-2-ene, N, N-bis- (2,2,6 , 6-tetramethyl-piperidin-4-yl-hexamethylenediamine, bis- (2,2,6,6th tramethylpiperidin-4-yl) sebacate, 2,2,6,6-tetramethylpiperidin-4-one, 2,2,6,6 tetramethylpiperidin-4-ol, the dimethyl succinate polymer with 4-hydroxy-2,2 , 6,6-tetramethyl-1-piperidineethanol [CAS number 65447-77-0], (for example Tinuvin® 622 from Ciba Specialty Chemicals, Inc.), polymer of 2,2,4,4-tetramethyl- 7-oxa-3,20-diaza-dispiro [5.1.11.2] -heeicosan-21-one and epichlorohydrin [CAS-No .: 202483-55-4], for example (Hostavin®30 from Ciba Specialty Chemicals, Inc .).

Group i) of the nickel compounds includes, for example, nickel complexes of 2,2'-thio-bis- [4- (1,1,3,3-tetramethylbutyl) phenol], such as the 1: 1 or 1: 2 complex, optionally with additional ligands such as n-butylamine, triethanolamine or N-cyclohexyl-diethanolamine, nickel dibutyldithiocarbamate, nickel salts of 4-hydroxy-3,5-di-tert- butylbenzylphosphonic acid monoalkyl esters such as e.g. B. the methyl or ethyl ester, nickel complexes of ketoximes such. B. of 2-hydroxy-4-methylphenylundecylketoxim, nickel complex of 1-phenyl-4-lauroyl-5-hydroxypyrazole, optionally with additional ligands.

Group j) of the sterically hindered amines includes, for example, 4-hydroxy-2,2,6,6-tetramethylpiperidine, 1-allyl-4-hydroxy-2,2,6,6-tetramethylpiperidine, 1-benzyl-4-hydroxy -2,2,6,6-tetramethylpiperidine, 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-piperidylosebacate, bis (1-octyloxy-2, 2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6,6-pentamethyl -4-piperidyl) -n-butyl-3,5-di-tert-butyl-4-hydroxybenzylmalonate (n-butyl-3,5-di-tert-butyl-4-hydroxy-benzyl-malonic acid bis (1, 2,2,6,6-pentamethylpiperidyl) ester), condensation product from 1 - (2-hydroxyethyl) -2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid, linear or cyclic condensation products from N, N'- Bis (2,2,6,6-tetramethyi-4-piperidyl) hexamethylenediamine and 4-tert-octylamino-2,6-dichloro-1, 3,5-triazine, tris (2,2,6,6-tetramethyl- 4-piperidyl) nitrilotriacetate, tetra- (2,2,6,6-tetramethyi-4-piperidyl) -1, 2,3,4-butane tetracarboxylate, 1, 1 '- ( 1, 2-ethanediyl) - bis (3,3,5,5-tetramethylpiperazinone), 4-benzoyl-2,2,6,6-tetramethylpiperidine, 4-stearyloxy-2,2,6,6-tetramethylpiperidine, bis- (1,2,2,6,6-pentamethylipiperidyl) -2-n-butyl- 2- (2-hydroxy-3,5-di-tert-butylbenzyl) malonate, 3-n-octyl-7,7,9 , 9-tetramethyl-1, 3,8-triazaspiro [4.5] decane-2,4-dione, bis (1-octyloxy-2,2,6,6-tetramethylpiperidyl) sebacate, bis (1-octyloxy- 2,2,6,6-tetramethyl-piperidyl) succinate, linear or cyclic condensation products of N, N'-bis (2,2,6,6-tetramethyl-4-piperidyl) hexamethylene diamine and 4-morpholino-2, 6-dichloro-1, 3,5-triazine, condensation product of N, N'-bis- (2,2,6,6-tetramethyl-4-piperidyl) hexamethylenediamine and formic acid ester (CAS no. 124172-53-8, for example Uvinul® 4050H from BASF AG, Ludwigshafen), condensation product of 2-chloro-4,6-bis (4-n-butylamino-2, 2,6,6-tetramethylpiperidyl) -1, 3,5-triazine and 1,2-bis (3-aminopropylamino) ethane, condensation product of 2-chloro-4,6-di- (4-n-butylamino-1, 2,2,6,6-pentamethylpiperidyl) - 1,3,5-triazine and 1,2-bis (3-aminopropylamino) ethane, 8-acetyl-3-dodecyl-7,7,9,9-tetramethyl-1, 3,8-triazaspiro [4.5] decane -2,4-dione, 3-dodecyl-1- (2,2,6,6-tetramethyl-4-piperidyl) pyrrolidine-2,5-dione, 3-dodecyl-1- (1,2,2,6 , 6-pentamethyl-4-piperidyl) pyrrolidine-2,5-dione, mixture of 4-hexadecyloxy and 4-stearyloxy-2,2,6,6-tetramethylpiperidine, condensation product from N, N'-bis (2.2 , 6,6-tetramethyl-4-piperidyl) hexamethylenediamine and 4-cyclohexylamino-2,6-dichloro-1, 3,5-triazine, condensation product from 1,2-bis (3-aminopropylamino) ethane and 2,4,6 -Trichlor-1, 3,5-triazine and 4-butylamino-2,2,6,6-tetramethylpiperidine (CAS Reg. No. [136504-96-6]); N- (2,2,6,6-tetramethyl-4-piperidyl) -n-dodecylsuccinimide, N- (1,2,2,6,6-pentamethyl-4-piperidyl) -n-dodecylsuccinimide, 2-undecyl- 7,7,9,9-tetramethyl-1-oxa-3,8-diaza-4-oxospiro [4, 5] decane, reaction product of 7,7,9,9-tetramethyl-2-cycloundecyl-1-oxa- 3,8-diaza-4-oxospiro [4,5] decane and epichlorohydrin, 1,1-bis (1,2,2,6,6-pentamethyl-4-piperidyloxycarbonyl) -2- (4-methoxyphenyl) ethene, N, N'-bis-formyl-N, N'-bis (2,2,6,6- tetramethyl-4-piperidyl) hexamethylene diamine, diester of 4-methoxy-methylene-malonic acid with 1,2,2,6,6-pentamethyl-4-hydroxypiperidine, poly [methylpropyl-3-oxo-4-

(2,2,6,6-tetramethyl-4-piperidyl)] siloxane, reaction product of maleic anhydride σ-

Olefin copolymer and 2,2,6,6-tetramethyl-4-aminopiperidine or 1,2,2,6,6-pentamethyl-4-aminopiperidine, copolymers of (partially) N-piperidin-4-yl substituted

Maleimide and a mixture of α-olefins such as. B. Uvinul® 5050H (BASF

AG), 1- (2-hydroxy-2-methylpropoxy) -4-octadecanoyloxy-2,2,6,6-tetramethylpiperidine,

1 - (2-Hydroxy-2-methylpropoxy) -4-hexadecanoyloxy-2, 2,6,6-tetramethylpiperidine, the

Reaction product of 1-oxyl-4-hydroxy-2,2,6,6-tetramethylpiperidine and a carbon residue of t-amyl alcohol, 1 - (2-hydroxy-2-methylpropoxy) -4-hydroxy-2,2,6 , 6-tetramethylpiperidine, 1- (2-hydroxy-2-methylpropoxy) -4oxo-2,2,6,6-tetramethylpiperidine, bis (1 - (2-hydroxy-2-methylpropoxy) -2,2,6,6 tetramethylpiperidin-4-yl) sebacate, bis (1 - (2-hydroxy-2-methylpropoxy) -2, 2,6,6-tetramethylpiperidin-4-yl) adipate, bis (1- (2-hydroxy-2-) methylpropoxy) -2, 2,6,6-tetramethyipiperidin-4-yl) succinate, bis (1 - (2-hydroxy-2-methylpropoxy) -2, 2,6,6-tetramethylpiperidin-4-yl) glutarate, 2 , 4-bis {N [1- (2-hydroxy-2-methylpropoxy) -2,2,6,6-tetramethylpiperidin-4-yl] -N-butylamino} -6- (2hydroxyethylamino) -s-triazine, N , N'-bis-formyl-N, N'-bis (1,2,2,6,6-pentamethyl-4-piperidyl) hexamethylene diamine, hexahydro-2,6-bis (2,2,6,6- tetramethyl-4-piperidyl) - 1H, 4H, 5H, 8H-2,3a, 4a, 6,7a, 8a-hexaazacyclopenta [def] fluorene-4,8-dione (e.g. Uvinul® 4049 from BASF AG, Ludwigshafen), poly [[6 - [(1, 1, 3,3-tetramethylbutyl) amino] -1, 3,5-t riazine-2,4-diyl] [(2,2,6,6-tetramethyl-4-piperidinyl) imino] 1,6-hexanediyl [(2,2,6,6-tetramethyl-4-piperidinylI) imino]] ) [CAS No. 71878-19-8], 1, 3,5-triazine-2,4,6-triamine, N, N '"- [1,2-ethane-diyl-bis [[4,6- bis- [butyl (1, 2,2,6,6-pentamethyl-4-piperidinyl) amino] -1, 3,5-triazin-2-yl] imino] -3, 1-propanediyl]] to [N ' , N "-dibutyl-N \ N" - bis (1, 2,2,6,6-pentamethyl-4-piperidinyl) - (CAS No. 106990-43-6) (e.g. B. Chimassorb 119 from Ciba Specialty Chemicals, Inc.).

Group k) of the metal deactivators includes, for example, N, N'-diphenyloxalic acid diamide, 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, sebacoylbisphenyl hydrazide, N, N'-diacetyladipic acid dihydrazide, N, N'-bis (salicyloyl) oxalic acid dihydrazide, N, N'-bis (salicropionyldihyd).

Group I) of the phosphites and phosphonites include, for example, triphenylphosphite, diphenylalkylphosphite, phenyldialkylphosphite, tris (nonylphenyl) phosphite, trilaurylphosphite, trioctadecylphosphite, distearylpentaerythritol diphosphite, tris (2,4-di-tert-butylphenithritol) bis (2) , 4-di-tert-butylphenyl) pentaerythritol diphosphite, bis (2,6-di-tert-butyl-4-methylphenyl) - pentaerythritol diphosphite, diisodecyloxypentaerythritol diphosphite, bis (2,4-di-tert-butyl-6-methylphenyl) pentaerythritol diphosphite , Bis (2,4,6-tris (tert-butylphenyl) pentaerythritol diphosphite, tristearyl sorbitol triphosphite, tetrakis (2,4-di-tert-butylphenyl) -4,4'- biphenylene diphosphonite, 6-isooctyloxy-2,4,8,10-tetra-tert-butyl-dibenz [df] [1,2,3] dioxaphosphepine, 6-fluoro-2,4,8,10-tetra-tert -butyl-12-methyl-dibenz [d, g] [1, 3,2] di-oxaphosphocin, bis (2,4-di-tert-butyl-6-methylphenyl) methyl phosphite, bis (2,4-di- tert-butyl-6-methylphenyl) ethyl phosphite, 2,2 ', 2 "-nitrilo [triethyl-tris (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.

The group m) of hydroxylamines include, for example, N, N-dibenzylhydroxylamine, N, N-diethylhydroxylamine, NN-dioctylhydroxylamine, N, N-dilaurylhydroxylamine, N, N-ditetradecylhydroxylamine, N, N-dihexadecylhydroxylamine, N, N-dioctadecylhydroxylamine , N-hexadecyl-N-octadecylhydroxylamine, N-heptadecyl-N-octa-decylhydroxylamine, N-methyl-N-octadecylhydroxylamine and N, N-dialkylhydroxylamine from hydrogenated tallow fatty amines.

The group n) of the nitrones includes, for example, N-benzyl-α-phenylnitron, N-ethyl-α-methylnitron, N-octyl-α-heptylnitron, N-lauryl-α-undecylnitron, N-tetradecyl-α-tridecylnitron, N -Hexadecyl-α-pentadecylnitron, N-octadecyl-α-heptadecylnitron, N-Hexadecyl-α-heptadecylnitron, N-Ocatadecyl-α-pentadecylnitron, N-heptadecyl-α-heptadecylnitron-α-hexadecylnitron, N-octadecyl -α-heptadecylnitrone and nitrones, derived from N, N-dialkylhydroxylamines made from hydrogenated talc fatty amines.

Group o) of the amine oxides includes, for example, amine oxide derivatives as described in U.S. Pat. Patents Nos. 5,844,029 and 5,880,191, didecylmethylamine oxide, tridecylamine oxide, tridodecylamine oxide and trihexadecylamine oxide.

Group p) of the benzofuranones and indolinones include, for example, those in US Patents 4,325,863; 4,338,244; 5,175,312; 5,216,052; 5,252,643; in DE-A-4316611; in DE-A-4316622; in DE-A-4316876; described in EP-A-0589839 or EP-A-0591102 or 3- [4- (2-acetoxyethoxy) phenyl] -5,7-di-tert-butyl-benzofuran-2-one, 5,7-di- tert-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) benzofuran-2-one, 3- (4-acetoxy-3,5-dimethylphenyl) -5,7-di tert-butyl-benzofuran-2-one, 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, Irganoxs HP-136 from Ciba Specialty Chemicals, and 3- (2,3-dimethylphenyl) -5,7-di-tert-butyl-benzofuran 2-one.

Group q) of the thiosynergists includes, for example, dilauryl thiodipropionate or distearyl thiodipropionate. The group r) of the peroxide-destroying compounds includes, for example, esters of β-thiodipropionic acid, for example the lauryl, stearyl, myristyl or tridecyl ester, mercaptobenzimidazole or the zinc salt of 2-mercaptobenzimidazole, zinc dibutyl dithiocarbamate, dioctadetrakyl disulfide (dioctadetrakyl disulfide) -dodecylmercapto) propionate.

Group s) of the basic costabilizers include, for example, melamine, polyvinyl pyrrolidone, dicyandiamide, triallyl cyanurate, urea derivatives, hydrazine derivatives, amines, polyamides, polyurethanes, alkali metal and alkaline earth metal salts of higher fatty acids, for example calcium stearate, zinc stearate, magnesium behenate, magnesium sthenate, magnesium sthenate, magnesium sthenate, magnesium sthenate, magnesium sthenate, magnesium sthenate, magnesium sthenate, magnesium sthenate, magnesium sthenate, magnesium sthenate, magnesium sthenate, magnesium sthenate, magnesium sthenate and potassium palmitate, antimony catecholate or zinc catecholate.

At least one compound I is preferably used together with at least one further light stabilizer which has at least one absorption maximum in the wavelength range from 280 to 400 nm. The further light stabilizer is preferably selected from compounds of groups b), c), d), e) and g).

In particular, it is a light stabilizer that has at least one absorption maximum in the wavelength range from 280 to 320 nm. The additionally used light stabilizer therefore has at least one absorption maximum in the UVB range. Absorption maxima in the context of the present invention are the bands belonging to the corresponding local or absolute maxima in the UV spectrum of the respective compounds, measured in conventional organic solvents such as dichloromethane, acetonitrile or methanol at room temperature. The maximum absorbance of the UVB absorber, which is measured in solution, usually in dichloromethane, at a concentration of 1% by weight and a layer thickness of 1 cm, is at least 100, in particular at least 200.

Examples of light stabilizers used in particular are the aforementioned diphenylcyanoacrylates of group e).

The plastic can also contain other additives. Suitable additives of group t) are the usual additives, such as. B., pigments, dyes, nucleating agents, fillers or reinforcing agents, anti-fogging agents, biocides and antistatic agents.

Suitable pigments are inorganic pigments, for example titanium dioxide in its three modifications rutile, anatase or brookite, ultramarine blue, iron oxides, bismuth vanadates or carbon black, and the class of organic pigments, for example compounds from the class of phthalocyanines, perylenes, azo compounds, isoindolines, Quinophthalones, diketopyrolopyrols, quinacridones, dioxazines, indanthrones. Dyes are to be understood as meaning all colorants which dissolve completely in the plastic used or are present in a molecularly disperse distribution and can therefore be used for the highly transparent, non-scattering coloring of polymers. Organic compounds which have fluorescence in the visible part of the electromagnetic spectrum, such as fluorescent dyes, are also to be regarded as dyes.

Suitable nucleating agents include, for example, inorganic substances, for example talc, 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 their salts such as. B.4-tert-butylbenzoic acid, adipic acid, diphenylacetic acid, sodium succinate or sodium benzoate; polymeric compounds, such as ionic copolymers ("ionomers").

Suitable fillers or reinforcing materials include, for example, calcium carbonate, silicates, talc, mica, kaolin, mica, barium sulfate, metal oxides and hydroxides, carbon black, graphite, wood flour and flours or fibers of other natural products, synthetic fibers. Examples of fibrous or pulverulent fillers are also carbon or glass fibers in the form of glass fabrics, glass mats or glass silk rovings, cut glass, glass balls and wool tonite. Glass fibers can be incorporated both in the form of short glass fibers and in the form of continuous fibers (rovings).

Suitable antistatic agents are, for example, amine derivatives such as N, N-bis (hydroxyalkyl) alkylamines or alkylene amines, polyethylene glycol esters and ethers, ethoxylated carboxylic acid ester and amides and glycerol mono- and distearates, and mixtures thereof.

Usually, at least one pyridinedione derivative of the formula I is added to the plastic in an amount of 0.01 to 10% by weight, preferably 0.01 to 5% by weight and particularly preferably 0.01 to 1.0% by weight. %, based on the total weight of the plastic. The total weight of the plastic is understood to mean the weight of the plastic mixed with the pyridinedione derivative of the formula I and, if appropriate, further (co) stabilizers (plastic + sum of all (co) stabilizers + sum of all other additives). The light protection achieved depends on the layer thickness of the plastic. This is illustrated by the Lambert-Beersche law E = ε • c ^» d (ε: molar extinction coefficient, c: concentration, d: layer thickness). A higher proportion of UV absorber is therefore generally used in thin plastic layers than in a thick plastic layer.

The compounds from groups a) to s) are used in customary amounts known to the person skilled in the art. They usually come in a concentration of 0.0001 to 10 wt .-%, preferably 0.01 to 1 wt .-%, based on the total weight of the plastic for use. In the case of the benzofuranones of group p), even lower concentrations of preferably 0.001 to 0.1% by weight are usually used.

The additives of group t) are used in the usual amounts. They are usually used in an amount of 0 to 60% by weight, based on the total weight of the plastic.

The pyridinedione derivative of the formula I used according to the invention can also in the form of a premix (masterbatch or compound) which contains at least one pyridinedione derivative of the formula I in a concentration of 1 to 20% by weight, of the materials to be stabilized, usually a plastic. Furthermore, the premix can contain the aforementioned compounds from groups a) to s) and other additives from group t).

Another object of the present invention relates to compositions containing an amount of at least one pyridinedione derivative of the formula I, as previously defined, which protects against the damaging action of light, and at least one organic material. The organic material is preferably a polymer selected from the group consisting of polyesters, polycarbonate polymers, polyolefins, polyvinyl acetals, polystyrene, copolymers of styrene or α-methylstyrene with dienes and / or acrylic derivatives and physical blends of the aforementioned polymers.

The statements made below for the compositions according to the invention regarding suitable and preferred embodiments apply equally to the corresponding use of such a pyridinedione derivative of the formula I in a thermoplastic.

An advantageous composition contains, for example: at least one pyridinedione derivative of the formula I as previously defined; at least one polyvinyl butyral (PVB); at least one oligoalkylene glycol alkyl carboxylic acid diester as a plasticizer; - At least one aliphatic carboxylic acid salt to control the adhesion; optionally at least one further UV absorber, selected from the group consisting of benzotriazoles, 2-phenyl-1,3,5-triazines, hydroxybenzophenones, diphenylcyanoacrylates and mixtures thereof; and optionally at least one further component selected from the group consisting of fillers, dyes, pigments and other additives. It is preferred to use at least one pyridinedione derivative of the formula I in PVB films in laminated glass, for example for automotive glazing.

With regard to the production of polyvinyl butyral, reference is made in full to what has been said above. The polyvinyl butyrals used in the polymer composition generally have an average molecular weight of more than 70,000, preferably about 100,000 to 250,000. The polyvinyl butyral generally has a residual content of less than 19.5, preferably about 17 to 19,% by weight. -% of hydroxyl groups, calculated as polyvinyl alcohol; a residual content of 0 to 10%, preferably 0 to 3%, of the remaining ester groups, calculated as polyvinyl ester. A polyvinyl butyral commercially available under the name Butvar® from Solutia, Inc. of St. Louis, Mo. is advantageous. The polyvinyl butyral molding composition is usually used in the form of a film with a thickness of 0.13 to 1.5 mm. The polyvinyl butyral can be shaped to the desired thickness, for example in an extrusion film line.

Suitable oligoalkylene glycol carboxylic acid diesters include the esters of aliphatic, unbranched or branched C ₂ -C ₁₀ monocarboxylic acids, preferably C ₆ -C ₈ monocarboxylic acids, with tri-C ₂ -C ₃ alkylene glycols or tetra-C ₂ -C ₃ alkylene glycols. Suitable plasticizers are, for example, triethylene glycol di (2-ethyl butyrate), triethylene glycol di (2-ethyl hexanoate), triethylene glycol diheptanoate or tetraethylene glycol diheptanoate. The proportion of plasticizer is usually 20 to 80% by weight, preferably 25 to 45% by weight, based on the total weight of the polymer composition.

Suitable aliphatic carboxylic acid salts for controlling the adhesion are, for example, the polyvalent metal salts of unbranched or branched -C ^ - monocarboxylic acids. Examples of suitable metals are zinc, aluminum, lead or alkaline earth metals such as magnesium or calcium. A suitable example of an aliphatic carboxylic acid salt for controlling the adhesion is, for example, the magnesium salt of 2-ethylbutyric acid. The salts reduce the stickiness and toughness of the polyvinyl butyral. The proportion of aliphatic carboxylic acid salt is usually 0.0001 to 0.5% by weight, preferably 0.0001 to 0.1% by weight, based on the total weight of the polymer composition.

In addition, the polyvinyl butyral polymer composition can contain at least one further UV absorber, which is preferably selected from the group consisting of benzotriazoles, 2-phenyl-1, 3,5-triazines, hydroxybenzophenones, diphenylcyanoacrylates and mixtures thereof.

Examples of suitable benzotriazoles are 2- (2'-hydroxyphenyl) benzotriazoles, preferably those mentioned above. The following are particularly preferred: 2- (3'-tert-Butyl-2'-hydroxy-5'-methylphenyl) -5-chlorobenzotriazole [CAS No. 3896-11-5), which is commercially available, for example, as Tinuvin® 326 from Ciba Specialty Chemicals, Inc. is available; 2,4-di-tert-butyl-6- (5-chlorobenzotriazol-2-yl) phenol [CAS No. 3864-99-1], which is commercially available, for example, as Tinuvin® 327 from Ciba Specialty Chemicals, Inc. is available; 2- (2H-Benzotriazol-2-yl) -4,6-di-tert-pentylphenol [CAS No. 25973-55-1], which is commercially available, for example, as Tinuvin® 328 from Ciba Specialty Chemicals, Inc. is; - 2-Benzotriazol-2-yl-4-methylphenol [CAS No. 2440-22-4], which is commercially available, for example, as Tinuvin® P from Ciba Specialty Chemicals, Inc.

Examples of suitable 2-phenyl-1,3,5-triazines are 2- (2'-hydroxyphenyl) -1,3,5-triazines, preferably those mentioned above. Particularly preferred are: - 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-hexyloxyphenol [CAS 147315-50-2], which is available commercially, for example, as Tinuvin® 1577 from Fa. Ciba Specialty Chemicals, Inc. is available; and 2,4-bis (2,4-dimethylphenyI) -6- (2-hydroxy-4-octyloxyphenyI) -1, 3,5-triazine [CAS No. 2725-22-6], which is commercially available, for example, as Cyasorb ® UV 1164 from Cytec is available. ,

Examples of suitable hydroxybenzophenones are 2-hydroxybenzophenones, preferably those mentioned above. Particularly preferred is: 2-hydroxy-4-n-octoxybenzophenone [CAS No. 1843-05-6], which is commercially available, for example, as Chimassorb® 81 from Ciba Specialty Chemicals, Inc.

Examples of suitable diphenylcyanoacrylates are those mentioned above. Particularly preferred are: 1,3-bis - [(2'-cyano-3 ', 3'-diphenylacryloyl) oxy] -2,2-bis {[2'-cyano-3', 3'-diphenyl-acryloyl) oxy] methyl} propane [CAS No. 178671-58-4], which is commercially available, for example, under the name Uvinul® 3030 from BASF AG, Ludwigshafen; Ethyl 2-cyan-3,3-diphenyl acrylate [CAS No. 5232-99-5], which is available, for example, under the name Uvinul® 3035 from BASF AG, Ludwigshafen; and 2-ethylhexyl-2-cyan-3,3-diphenylcyanoacrylate [CAS 6197-30-4], which is commercially available, for example, under the name Uvinul® 3039 from BASF AG, Ludwigshafen.

As a rule, the proportion of further UV absorber, depending on the film thickness used, is 0.05 to 2% by weight, preferably 0.1 to 1% by weight, based on the Total weight of the polymer composition. In the case of thin polymer layers, a higher proportion of UV absorber is generally used than thick polymer layers.

The polyvinyl butyral polymer composition can additionally contain at least one further component which is selected from the group consisting of fillers, dyes, pigments and other additives. With regard to suitable fillers, dyes and pigments, reference is made in full to what has been said above.

A further advantageous composition contains: at least one pyridinedione derivative of the formula I as previously defined; at least one polycarbonate polymer selected from the group consisting of polycarbonates, polycarbonate copolymers and physical blends of polycarbonates with acrylic-butadiene-styrene copolymers, acrylonitrile-styrene-acrylic ester copolymers, polymethyl methacrylates, polybutyl acrylates, polybutyl methacrylates, poly (butylene terephthalate) and polyethylene terephthalates; at least one stabilizer selected from the group consisting of phosphites, phosphonites and mixtures thereof; optionally at least one further UV absorber, selected from the group consisting of benotriazoles, 2-phenyl-1,3,5-triazines, diphenyicyanacrylates and mixtures thereof; optionally at least one 2,6-dialkylated phenol as an antioxidant and optionally at least one further component selected from the group consisting of fillers, dyes, pigments and other additives.

The pyridinedione derivatives of the formula I are also advantageously used in polycarbonate polymer compositions.

In the context of the present application, the term “polycarbonate copolymers” encompasses polycarbonates which can be obtained by condensing phosgene or carbonic acid esters with at least two different dihydroxy compounds, for example different bisphenols. A proportion of halogenated bisphenols, for example tetrabromobisphenol, increases the flame resistance, a proportion of bisphenol S (dihydroxydiphenyl sulfide) increases the notched impact strength. The polycarbonate copolymers include, for example, polycarbonate copolymers based on bisphenol A and bisphenol C, or polycarbonate copolymers based on bisphenol A and bisphenol TMC (trimethylcyclohexane). In the context of the present invention, the term “polycarbonate copolymers” also includes polyester carbonates, which can be obtained, for example, by reacting bisphenols with phosgene and aromatic dicarboxylic acid dichlorides, and block copolymers composed of polycarbonate and polyalkylene oxide blocks. The polycarbonate polymer composition comprises at least one stabilizer selected from the group consisting of phosphites and phosphonites. With regard to suitable phosphites and phosphonites, reference is made in full to what has been said above. Preferred phosphites and phosphonites are tris (2,4-di-tert-butylphenyl) phosphite [CAS No. 31570-04-4], which is commercially available, for example, as Irgafos® 168 from Ciba Specialty Chemicals, Inc. is available, tetrakis (2,4-di-tert-butylphenyl) -4,4'-diylbisphosphonite [CAS No. 119345-01-6], which is commercially available, for example, as Irgafos® P-EPQ from Ciba Specialty Chemicals, Inc. is available, and mixtures thereof. The proportion of phosphite and / or phosphonite is usually up to 2000 ppm, preferably 500 to 1500 ppm, based on the total weight of the polymer composition

In addition, the polycarbonate polymer composition can contain at least one further UV absorber. Suitable further UV absorbers are those mentioned above. The further UV absorbers are preferably selected from the group consisting of benzotriazoles, 2-phenyl-1, 3,5-triazines, diphenylcyanoacrylates and mixtures thereof.

Examples of suitable benzotriazoles are 2- (2'-hydroxyphenyl) benzotriazoles, preferably those mentioned above. Particularly preferred are: 2- (2H-benzotriazol-2-yl) -4,6-bis (1-methyl-1-phenylethyl) phenol [CAS No. 70321-86-7], which is commercially available, for example, as Tinuvin ® 234 is available from Ciba Specialty Chemicals, Inc.; - 2,4-di-tert-butyl-6- (5-chlorobenzotriazoi-2-yl) phenol [CAS No. 3864-99-1], which is commercially available, for example, as Tinuvin® 327 from Ciba Specialty Chemicals, Inc is available; 2- (2H-Benzotriazol-2-yl) -4- (1, 1, 3,3-tetramethylbutyl) phenol [CAS No. 3147-75-9], which is commercially available, for example, as Tinuvin® 329 from Ciba Specialty Chemicals, Inc. is available; 2- (2H-Benzotriazol-2-yl) -4- (tert-butyl) -6- (sec-butyl) phenol [CAS No. 36437-37-3], which is commercially available, for example, as Tinuvin® 350 from Ciba Specialty Chemicals, Inc. is available; 2,2'-methylenebis (6- (2H-benzotriazol-2-yl) -4-1, 1,3,3-tetramethylbutyl) phenol) [CAS No. 103597-45-1], which is commercially available, for example, as Tinuvin® 360 is available from Ciba Specialty Chemicals, Inc.; and also transesterification products of methyl 3- (3- (2H-benzotriazol-2-yl) -5-tert-butyl-4-hydroxyphenyl) propionate with polyethylene glycol, for example available as Tinuvin® 213 from Ciba Specialty Chemicals, Inc. (containing 52% of the compound R-COO - [(CH ₂ ) ₂ -O] _n -H (molar mass: 637 g / mol) [CAS No. 104810-48-2], 35% of the compound of the formula R-COO- [(CH ₂ ) ₂ -O] _n -CO-R (molar mass: 975 g / mol [CAS No. 104810-47-1] with and 13% of the compound HO - [(CH ₂ ) ₂ -O] _n -H [CAS No. 25322-68-3].

Examples of 2-phenyl-1, 3,5-triazines are 2- (2'-hydroxyphenyl) -1,3,5-triazines, preferably those mentioned above. Particularly preferred are: 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-hexyloxyphenol [CAS No. 147315-50-2], which is commercially available, for example, as Tinuvin® 1577 is available from Ciba Specialty Chemicals, Inc.

Examples of suitable diphenylcyanoacrylates are those mentioned above. Preferred are: 1 ₎ 3-bis - [(2'-cyano-3 ', 3'-diphenylacryloyl) oxy] -2,2-bis {[2'-cyano-3', 3'-diphenyl-acryloyl) oxy ] methyl} propane [CAS No. 178671-58-4], which is commercially available, for example, under the name Uvinul® 3030 from BASF AG, Ludwigshafen; and ethyl 2-cyan-3,3-diphenyl acrylate [CAS no. 5232-99-5], which is commercially available, for example, under the name Uvinul® 3035 from BASF AG, Ludwigshafen.

As a rule, the proportion of further UV absorber is up to 10% by weight, preferably 0.001-10% by weight, in particular 0.05-10% by weight, very particularly preferably 0.1-10% by weight. %, based on the total weight of the polymer composition. In the case of thin polymer layers, a higher proportion of UV absorber is generally used than thick polymer layers.

In addition, the polycarbonate polymer composition can contain at least one 2,6-dialkylated phenol as an antioxidant. Suitable 2,6-dialkylated phenols are the aforementioned and in particular the esters of β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols. Preferred esters of β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols are pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate ] [CAS No. 6683-19-8], which is commercially available, for example, as Irganox® 1010 from Ciba Specialty Chemicals, Inc., 3- (3,5-di-tert-butyl-4-hydroxyphenyl) - octadecyl propionate [CAS No. 2082-79-3], which is commercially available, for example, as Irganox® 1076 from Ciba Specialty Chemicals, Inc. and mixtures thereof of. The proportion of antioxidant is usually up to 2000 ppm, preferably 500 to 2000 ppm, based on the total weight of the polymer composition.

A further advantageous polymer composition contains both at least one 2,6-dialkylated phenol as an antioxidant and at least one phosphite and / or phosphonite as a stabilizer. The ratio of antioxidant to costabilizer is then usually in the range from 1:10 to 10: 1.

An advantageous polymer composition contains at least one polycarbonate, at least one pyridinedione derivative of the formula I as defined above and, as a further component ^), the substance (s) indicated in one row of Table A (compositions 1.1 to 1.60). The proportions by weight of the individual constituents in the compositions 1.1 to 1.60 are in the ranges given above, based on the total weight of the polymer composition.

Table A:

Further advantageous polymer compositions are 2.1 to 2.60, which differ from the corresponding compositions 1.1 to 1.60 only in that the polycarbonate is replaced by a polycarbonate copolymer.

Further advantageous polymer compositions are 3.1 to 3.60, which differ from the corresponding compositions 1.1 to 1.60 only in that the polycarbonate is replaced by a physical blend of polycarbonates with acrylic-butadiene-styrene copolymers.

Further advantageous polymer compositions are 4.1 to 4.60, which differ from the corresponding compositions 1.1 to 1.60 only in that the polycarbonate is replaced by a physical blend of polycarbonates with acrylonitrile-styrene-acrylic ester copolymers.

Further advantageous polymer compositions are 5.1 to 5.60, which differ from the corresponding compositions 1.1 to 1.60 only in that the polycarbonate is replaced by a physical blend of polycarbonates with polymethyl methacrylates.

Further advantageous polymer compositions are 6.1 to 6.60, which differ from the corresponding compositions 1.1 to 1.60 only in that the polycarbonate is replaced by a physical blend of polycarbonates with polybutyl acrylates.

Further advantageous polymer compositions are 7.1 to 7.60, which differ from the corresponding compositions 1.1 to 1.60 only in that the polycarbonate is replaced by a physical blend of polycarbonates with polybutyl methacrylates.

Further advantageous polymer compositions are 8.1 to 8.60, which differ from the corresponding compositions 1.1 to 1.60 only in that the polycarbonate is replaced by a physical blend of polycarbonates with poly (butylene terephthalate) s.

Further advantageous polymer compositions are 9.1 to 9.60, which differ from the corresponding compositions 1.1 to 1.60 only in that the polycarbonate is replaced by a physical blend of polycarbonates with polyethylene terephthalates.

In addition, the polycarbonate polymer composition can contain at least one further component which is selected from the group consisting of dyes, pigments and other additives.

With regard to suitable dyes and pigments, reference is made in full to what has been said above. In a preferred embodiment, the dye and / or the pigment is a bluing agent. Suitable bluing agents are, for example, ultramarine blue, phthalocyanines, anthraquinones and indanthrones. When using a bluing agent, the proportion of bluing agent is up to 500 ppm (0.05 % By weight), preferably 0.5-100 ppm, based on the total weight of the polymer composition.

Preferred applications for polycarbonate polymer compositions are diffusing screens for headlight covers, windshields in automobiles and other glazing in automobiles and architecture.

A further advantageous composition contains: at least one pyridinedione derivative of the formula I as previously defined; - at least one polyethylene terephthalate (PET); at least one 2,6-dialkylated phenol as an antioxidant; optionally at least one costabilizer selected from the group consisting of phosphites, phosphonites and mixtures thereof; and optionally at least one further UV absorber, selected from the group consisting of diphenylcyanoacrylates, phenyl-1, 3,5-triazines, and benzotriazoles and mixtures thereof.

It is also advantageous to use at least one pyridinedione derivative of the formula I as previously defined in a PET composition.

2,6-Dialkylated phenols suitable as antioxidants are those mentioned above. Preferred are the esters of β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols and especially pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl ) propionate] [CAS No. 6683-19-8], which is commercially available, for example, as Irganox® 1010 from Ciba Specialty Chemicals, Inc., hexamethylene-bis- (3- (3,5-di-tert -butyl-4-hydroxyphenyl) propionate [CAS No. 35074-77-2], which is commercially available, for example, as Irganox® 259 from Ciba Specialty Chemicals, Inc., and 3,5-dialkylated hydroxyphenylmethylphosphonic acid esters, preferably (( 3,5- bis (1,1-dimethylethyl) -4-hydroxyphenyl) methyl) phosphonic acid diethyl ester [CAS No. 976-56-7], which is commercially available, for example, as Irganox® 1222 from Ciba Specialty Chemicals, Inc. ,

The proportion of antioxidant is usually up to 2000 ppm, preferably 500 to 2000 ppm, based on the total weight of the polymer composition.

The polyethylene terephthalate polymer composition optionally contains at least one costabilizer which is selected from the group consisting of phosphites, phosphonites and mixtures thereof. Suitable phosphites and phosphonites are those mentioned above. A preferred phosphite is tris (2,4-di-tert-butylphenyl) phosphite [CAS No. 31570-04-4], which is commercially available, for example, as Irgafos® 168 from Ciba Specialty Chemicals, Inc. The proportion of phosphite and / or phospho- nit is usually up to 2000 ppm, preferably 500 to 2000 ppm, in particular 750 to 2000 ppm, based on the total weight of the polymer composition.

An advantageous polyethylene terephthalate polymer composition contains both at least one 2,6-dialkylated phenol, preferably at least one 3,5-dialkylated hydroxyphenylmethylphosphonic acid ester and / or at least one ester of β- (3,5-di-tert-butyl-4-hydroxyphenyl) ) propionic acid with mono- or polyhydric alcohols, as an antioxidant and at least one phosphite and / or phosphonite as a costabilizer. The ratio of antioxidant to costabilizer is then usually in the range from 1:10 to 10: 1.

In addition, the polyethylene terephthalate polymer composition can contain at least one further UV absorber. Suitable further UV absorbers are those mentioned above. The further UV absorbers are preferably selected from the group consisting of diphenylcyanoacrylates, phenyl-1, 3,5-triazines and benzotriazoles and mixtures thereof.

Examples of suitable benzotriazoles are 2- (2'-hydroxyphenyl) benzotriazoles, preferably those mentioned above. Particularly preferred are: - 2- (2H-benzotriazol-2-yl) -4,6-bis (1-methyl-1-phenylethyl) phenol [CAS No. 70321-86-7], which is commercially available, for example, as Tinuvin® 234 is available from Ciba Specialty Chemicals, Inc.; 2,4-di-tert-butyl-6- (5-chlorobenzotriazol-2-yl) phenol [CAS No. 3864-99-1], which is commercially available, for example, as Tinuvin® 327 from Ciba Specialty Chemicals, Inc. is available; 2,2'-methylenebis (6- (2H-benzotriazol-2-yl) -4-1, 1,3,3-tetramethylbutyl) phenol) [CAS No. 103597-45-1], which is commercially available, for example, as Tinuvin® 360 is available from Ciba Specialty Chemicals, Inc.; and transesterification products of methyl 3- (3- (2H-benzotriazol-2-yl) -5-tert-butyl-4-hydroxyphenyl) propionate with polyethylene glycol, for example available as Tinuvin® 213 from Ciba Specialty Chemicals, Inc.

Examples of suitable 2-phenyl-1,3,5-triazines are 2- (2'-hydroxyphenyl) -1,3,5-triazines, preferably those mentioned above. Particularly preferred are: - 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-hexyloxy-phenol [CAS No. 147315-50-2], which is commercially available, for example, as Tinuvin® 1577 from Ciba Specialty Chemicals, Inc.

Examples of suitable diphenylcyanoacrylates are those mentioned above. Preferred are: 1,3-bis - [(2'-cyano-3 ', 3'-diphenylacryloyl) oxy] -2,2-bis ^{{[2'-cyano-3,} ³ -diphenyl- acryloyl) oxy ] methyl} propane [CAS No. 178671-58-4], for example in the Han- del is available under the name Uvinul® 3030 from BASF AG, Ludwigshafen; Ethyl 2-cyan-3,3-diphenyl acrylate [CAS No. 5232-99-5], which is available, for example, under the name Uvinul® 3035 from BASF AG, Ludwigshafen; and 2-ethylhexyl-2-cyano-3,3-diphenyl acrylate [CAS no. 6197-30-4], which is commercially available, for example, under the name Uvinul® 3039 from BASF AG, Ludwigshafen. As a rule, the proportion of further UV absorber is up to 2% by weight, preferably 0.01-5% by weight, in particular 0.1-0.15% by weight, based on the total weight of the polyethylene terephthalate polymer. Composition. In the case of thin polymer layers, a higher proportion of UV absorber is generally used than thick polymer layers.

Another advantageous polyethylene terephthalate polymer composition contains at least one pyridinedione derivative of the formula I as defined above and, as a further component (s), the substance (s) indicated in a row of Table B (compositions 10.1 to 10.54). The proportions by weight of the individual constituents in the compositions 10.1 to 10.54 are in the ranges given above, based on the total weight of the polymer composition.

Table B:

The polyethylene terephthalate is advantageously an amorphous polyethylene terephthalate and the polyethylene terephthalate polymer composition additionally contains at least one acetaldehyde scavenger. A suitable acetaldehyde scavenger is, for example, anthranilamide [CAS No. 88-68-6]. Further advantageous polyethylene terephthalate polymer compositions are 11.1 to 11.54, which differ from the corresponding compositions 10.1 to 10.54 only in that the polyethylene terephthalate is an amorphous polyethylene terephthalate and the composition additionally contains an acetaldehyde scavenger.

In addition, the polymer composition containing the amorphous polyethylene terephthalate can contain at least one further component which is selected from the group consisting of reheating agents, dyes, pigments and other additives.

In the context of the present application, a reheating agent is understood to mean a substance which, by absorbing energy, accelerates the plasticization of the polymer and thereby enables the polymer mass to be deformed by downstream units (e.g. blow molding bottles). A suitable reheating agent is, for example, soot. Carbon black can be used in the form of a powder or granulate. The proportion of reheating agent is usually 0.1 to 2 wt .-%, based on the total weight of the polymer composition. Suitable dyes, pigments and other additives are those mentioned above.

It is advantageous to use at least one pyridinedione derivative of the formula I in compositions which contain an amorphous polyethylene terephthalate, at least one 2,6-dialkylated phenol as antioxidant and at least one acetaldehyde scavenger, for packaging materials such as bottles or containers.

The polyethylene terephthalate is advantageously a partially crystalline polyethylene terephthalate and the polymer composition additionally contains at least one nucleating agent. Suitable nucleating agents are those mentioned above. The proportion of nucleating agent is generally 0.05 to 1% by weight, based on the total weight of the polymer composition.

Further advantageous polyethylene terephthalate polymer compositions are 12.1 to 12.54, which differ from the corresponding compositions 10.1 to 10.54 only in that the polyethylene terephthalate is a partially crystalline polyethylene terephthalate and the composition additionally contains at least one nucleating agent. Fields of application for partially crystalline polyethylene terephthalate containing polymer compositions are optical films e.g. B. for displays.

Further advantageous compositions contain: at least one pyridinedione derivative of the formula I as previously defined; - at least one high density polyethylene or a polypropylene; at least one 2,6-dialkylated phenol as an antioxidant; optionally at least one costabilizer selected from the group consisting of phosphites, phosphonites and mixtures thereof; optionally at least one further UV absorber, selected from the group consisting of diphenylcyanoacrylates, hydroxybenzophenones, phenyl-1, 3,5-triazines, benzotriazoles and mixtures thereof; optionally at least one sterically hindered amine; and optionally another component selected from the group consisting of dyes, pigments and other additives.

It is advantageous to use at least one pyridinedione derivative of the formula I as defined above in a composition comprising a high-density polyethylene or a polypropylene.

Examples of suitable 2,6-dialkylated phenols are the aforementioned and preferably the esters of β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols, in particular pentaerythritoitetrakis [3- ( 3,5-di-tert-butyl-4-hydroxyphenyl) propionate] [CAS No. 6683-19-8], which is commercially available, for example, as Irganox® 1010 from Ciba Specialty Chemicals, Inc., 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester [CAS No. 2082-79-3], which is commercially available, for example, as Irganox® 1076 from Ciba Specialty Chemicals, Inc. and mixtures thereof , The proportion of antioxidant is usually up to 4000 ppm, preferably 1000 to 4000 ppm, based on the total weight of the polymer composition.

The composition may contain a costabilizer. which is selected from the group consisting of phosphites, phosphonites and mixtures thereof. With regard to suitable phosphites and phosphonites, reference is made in full to what has been said above. Preferred phosphites and phosphonites are tris (2,4-di-tert-butylphenyl) phosphite [CAS No. 31570-04-4], which is commercially available, for example, as Irgafos® 168 from Ciba Specialty Chemicals, Inc. , Tetrakis (2,4-di-tert-butylphenyl) [1,1-biphenyl) -4,4'-diylbisphosphonite [CAS No. 119345-01-6], which is commercially available, for example, as Irgafos® P-EPQ Ciba Specialty Chemicals, Inc., and mixtures thereof. The proportion of phosphite and / or phosphonite is generally up to 2000 ppm, preferably 500 to 2000 ppm, in particular 750 to 2000 ppm, based on the total weight of the polymer composition.

A further advantageous polymer composition contains both at least one 2,6-dialkylated phenol as an antioxidant and at least one phosphite and / or phosphonite as a costabilizer. The ratio of antioxidant to costabilizer is then usually in the range from 1:10 to 10: 1.

In addition, the polymer composition can contain at least one further UV absorber. Suitable further UV absorbers are those mentioned above. The further UV absorbers are preferably selected from the group consisting of Diphenylcyanoacrylates, hydroxybenzophenones, phenyl-1, 3,5-triazines, benzotriazoles and mixtures thereof.

Examples of suitable benzotriazoles are 2- (2'-hydroxyphenyl) benzotriazoles, preferably those mentioned above. Particularly preferred are: 2- (2H-benzotriazol-2-yl) -4,6-bis- (1-methyl-1-phenylethyl) phenol [CAS No. 70321-86-7], which is commercially available, for example, as Tinuvin ® 234 is available from Ciba Specialty Chemicals, Inc.; 2,4-di-tert-butyl-6- (5-chlorobenzotriazol-2-yl) phenol [CAS No. 3864-99-1], which is commercially available, for example, as Tinuvin® 327 from Ciba Specialty Chemicals, Inc. is available; 2- (2H-Benzotriazol-2-yl) -4- (1, 1, 3,3-tetramethylbutyl) phenol [CAS No. 3147-75-9], which is commercially available, for example, as Tinuvin® 329 from Ciba Specialty Chemicals, Inc. is available; - 2- (2H-Benzotriazol-2-yl) -4- (tert-butyl) -6- (sec-butyl) phenol [CAS No. 36437-37-3], which is commercially available, for example, as Tinuvin® 350 from Ciba Specialty Chemicals, Inc. is available; 2,2'-methylenebis (6- (2H-benzotriazol-2-yl) -4-1, 1,3,3-tetramethylbutyl) pheno!) [CAS No. 103597-45-1], which is commercially available, for example is available as Tinuvin® 360 from Ciba Specialty Chemicals, Inc.; and transesterification products of methyl 3- (3- (2H-benzotriazol-2-yl) -5-tert-butyl-4-hydroxyphenyl) propionate with polyethylene glycol, for example as Tinuvin® 213 from Ciba Specialty Chemicals, Inc.

Examples of suitable 2-phenyl-1,3,5-triazines are 2- (2'-hydroxyphenyl) -1,3,5-triazines, preferably those mentioned above. Particularly preferred are: 2- (4,6-diphenyl-1,3,5-triazin-2-yI) -5-hexyoxyphenol [CAS No. 147315-50-2], which is commercially available, for example, as Tinuvin® 1577 is available from Ciba Specialty Chemicals, Inc.; and - 2,4-bis (2,4-dimethylphenyl) -6- (2-hydroxy-4-octyloxyphenyl) -1, 3,5-triazine [CAS No. 2725-22-6], which is commercially available, for example, as Cyasorb® UV 1164 from Cytec is available.

Examples of suitable hydroxybenzophenones are 2-hydroxybenzophenones, preferably those mentioned above. Particularly preferred are: 2-hydroxy-4-n-octoxybenzophenone [CAS No. 1843-05-6], which is commercially available, for example, as Chimassorb® 81 from Ciba Specialty Chemicals, Inc.

Examples of suitable diphenylcyanoacrylates are those mentioned above. Preferred are: IS-bis-K-cyano-S'.S'-diphenylacryloy ox ^^^ - bisf ^ '- cyano-S'.S'-diphenyl-acryloyl) oxy] methyl} propane [CAS No. 178671- 58-4], for example in Han del is available under the name Uvinul® 3030 from BASF AG, Ludwigshafen; and ethyl 2-cyan-3,3-diphenylacrylate [CAS No. 5232-99-5], which is commercially available, for example, under the name Uvinul® 3035 from BASF AG, Ludwigshafen.

As a rule, the proportion of further UV absorber is up to 2% by weight, preferably 0.01 to 1.5% by weight and in particular 0.05 to 1% by weight, based on the total weight of the polymer composition. In the case of thin polymer layers, a higher proportion of UV absorber is generally used than thick polymer layers.

In addition, the polymer composition containing a high density polyethylene or a polypropylene may contain at least one hindered amine.

Suitable hindered amines (HALS) are oligomeric and monomeric hindered amines, for example those mentioned above. Preferred sterically hindered amines are: copolymers of (partially) N-piperidin-4-yl substituted maleimide and a mixture of α-olefins, for example as Uvinul® 5050H [CAS 152261-33-1] (molar mass about 3500 g / mol ) of the following formula

are available from BASF AG, Ludwigshafen; the sterically hindered amine of the formula [CAS no. 124172-53-8] that is available, for example, under the name Uvinul® 4050 H from BASF AG, Ludwigshafen; Poly [[6 - [(1, 1, 3,3-tetramethylbutyl) amino] -1, 3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4-piperidinyl) imino] 1,6-hexanediyl [(2,2,6,6-tetramethyl-4-piperidinyl) imino]]) [CAS No. 71878-19-8], which is commercially available, for example, as Chimassorb® 944 (molar mass: 2000 to 3100 g / mol) is available from Ciba Specialty Chemicals, Inc.; the dimethyl succinate polymer with 4-hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol [CAS number 65447-77-0], which is commercially available, for example, as Tinuvin® 622 (molar mass: 3100-4100 g / mol ) is available from Ciba Specialty Chemicals, Inc.; Bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate [CAS No. 52829-07-9], which is commercially available, for example, as Tinuvin® 770 from Ciba Specialty Chemicals, Inc.; and the polymer of 2,2,4,4-tetramethyl-7-oxa-3,20-diaza-dispirö [5.1.11.2] - heneicosan-21-one and epichlorohydrin of the formula

[CAS No. 202483-55-4], which is commercially available, for example, as Hostavin® N30 from Ciba Specialty Chemicals, Inc.

As a rule, the proportion of sterically hindered amine is up to 2% by weight, preferably 0.1-2% by weight, in particular 0.1-1.5% by weight, very particularly preferably 0.1-1 % By weight, based on the total weight of the polymer composition. In the case of thin polymer layers, a higher proportion of sterically hindered amine is generally used than in the case of thick polymer layers. In addition, the polymer composition can contain at least one further component selected from the group consisting of dyes, pigments and other additives. Suitable dyes and pigments are those mentioned above.

Also advantageous are compositions which contain at least one high-density polyethylene or a polypropylene, at least one pyridinedione derivative of the formula I as defined above and, as a further component (s), the ^) substance (s) indicated in one row of Table C (compositions 13.1 to 13.108). The proportions by weight of the individual constituents in compositions 13.1 to 13.108 are in the ranges given above, based on the total weight of the polymer composition.

Table C:

Furthermore, the use of at least one pyridinedione derivative of the formula I in polymer compositions which contain at least one high-density polyethylene or propylene is advantageous for packaging materials such as bottles or containers.

Further advantageous compositions contain: at least one pyridinedione derivative of the formula I as defined above; at least one polystyrene; at least one 2,6-dialkylated phenol as an antioxidant; optionally at least one costabilizer selected from the group consisting of phosphites, phosphonites and mixtures thereof; optionally at least one further UV absorber selected from the group consisting of benzotriazoles, diphenylcyanoacrylates and mixtures thereof; optionally at least one sterically hindered amine; and - if appropriate, at least one further component selected from the group consisting of dyes, pigments and other additives.

Furthermore, the use of at least one pyridinedione derivative of the formula I as previously defined in a polystyrene polymer composition is advantageous.

Examples of suitable 2,6-dialkylated phenols are those mentioned above. Preferred 2,6-dialkylated phenols are the esters of β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols and in particular: pentaerythritol tetrakis [3- (3,5- di-tert-butyl-4-hydroxyphenyl) propionate] [CAS No. 6683-19-8], which is commercially available, for example, as Irganox® 1010 from Ciba Specialty Chemicals, Inc., 3- (3rd , 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester [CAS No. 2082-79-3], which is commercially available, for example, as Irganox® 1076 from Ciba Specialty Chemicals, Inc. and mixtures thereof. The proportion of antioxidant is usually up to 2000 ppm, preferably 500 to 2000 ppm, based on the total weight of the polymer composition.

With regard to suitable phosphites and phosphonites, reference is made in full to what has been said above. A preferred phosphite is tris (2,4-di-tert-butylphenyl) phosphite [CAS No. 31570-04-4], which is commercially available, for example, as Irgafos® 168 from Ciba Specialty Chemicals, Inc. The proportion of phosphite and / or phosphonite is usually up to 2000 ppm, preferably 500 to 2000 ppm, based on the total weight of the polymer composition.

Also advantageous are mixtures containing at least 2,6-dialkylated phenol, preferably an ester of β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols, as an antioxidant and a phosphite and / or phosphonite as a costabilizer. The ratio of costabilizer to antioxidant is then usually in the range of 10: 1 to 1:10. Among these mixtures, those are particularly preferred which, as a costabilizer, tris (2,4-di-tert-butylphenyl) phosphite [CAS No. 31570-04-4], which is commercially available, for example, as Irgafos® 168 from Ciba Specialty Chemicals, Inc. is available, and contains as an antioxidant pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] [CAS No. 6683-19-8], which is described, for example, in Commercially available as Irganox® 1010 from Ciba Specialty Chemicals, Inc., or octadecyl 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate [CAS No. 2082-79-3], for example commercially available as Irganox® 1076 from Ciba Specialty Chemicals, Inc. A preferred mixture is, for example, a mixture of 1 part of 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester and 4 parts of tris (2,4-di-tert-butylphenyl) phosphite, the Z. B. is commercially available as Irganox B900 from Ciba Specialty Chemicals, Inc.

In addition, the polystyrene polymer composition can contain at least one further UV absorber. Suitable further UV absorbers are those mentioned above. The further UV absorber is preferably selected from the group consisting of benzotriazoles, diphenyl cyanoacrylates and mixtures thereof.

Examples of suitable benzotriazoles are 2- (2'-hydroxyphenyl) benzotriazoles, preferably those mentioned above. Particularly preferred are: 2- (2H-benzotriazol-2-yl) -4,6-di-tert-pentylphenol [CAS No. 25973-55-1], which is commercially available, for example, as Tinuvin® 328 from Ciba Specialty Chemicals , Inc. is available; and 2-benzotriazol-2-yl-4-methylphenol [CAS No. 2440-22-4], which is commercially available, for example, as Tinuvin® P from Ciba Specialty Chemicals, Inc. and mixtures thereof.

Examples of suitable diphenylcyanoacrylates are those mentioned above. Preferred are: 1, 3-bis - [(2'-cyano-3 ', 3'-diphenyIacryloyl) oxy] -2,2-bis {[2'-cyano-3', 3 ^, -diphenyIacryloyl) oxy] methyl} propane [CAS No. 178671-58-4], which is commercially available, for example, under the name Uvinul® 3030 from BASF AG, Ludwigshafen; and ethyl 2-cyan-3,3-diphenyiacrylate [CAS No. 5232-99-5], which is commercially available, for example, under the name Uvinul® 3035 from BASF AG, Ludwigshafen.

As a rule, the proportion of further UV absorber is up to 2% by weight, preferably 0.01-1.5% by weight, in particular 0.05-1% by weight, based on the total weight of the polymer composition. In the case of thin polymer layers, a higher proportion of UV absorber is generally used than thick polymer layers. In addition, the polystyrene polymer composition may contain at least one hindered amine.

Suitable sterically hindered amines are those mentioned above. The sterically hindered amine is preferably a compound of the formula: RNH- (CH ₂ ) ₃ -NR- (CH ₂ ) ₂ -NR- (CH ₂ ) ₃ -NHR [CAS No. 106990-43-6]

With

which is commercially available, for example, as Chimassorb® 119 from Ciba Specialty Chemicals, Inc., bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate [CAS No. 52829-07-9], the for example commercially available as Tinuvin® 770 from Ciba Specialty Chemicals, Inc. or mixtures thereof.

As a rule, the proportion of sterically hindered amine is up to 2% by weight, preferably 0.1-1.5% by weight, in particular 0.1-0.5% by weight, based on the total weight of the polymer composition ,

In addition, the polystyrene polymer composition can contain at least one further component which is selected from the group consisting of dyes, pigments and other additives. Suitable dyes and pigments are those mentioned above.

Advantageous polystyrene polymer compositions contain at least one pyridinedione derivative of the formula I as defined above and, as further components, the substances specified in one row of Table D (compositions 14.1 to 14.45). The proportions by weight of the individual constituents in compositions 14.1 to 14.45 are in the ranges given above, based on the total weight of the polymer composition.

Table D:

It is advantageous to use at least one pyridinedione derivative of the formula I in polystyrene polymer compositions for packaging, such as yogurt cups and housings for electrical appliances.

Further advantageous compositions contain: at least one pyridinedione derivative of formula I as previously defined; at least one acrylonitrile-butadiene-styrene copolymer or styrene-acrylonitrile copolymer; - At least one 2,6-dialkylated phenol as an antioxidant; optionally at least one costabilizer selected from the group consisting of phosphites, phosphonites and mixtures thereof; optionally at least one further UV absorber, selected from the group consisting of benzotriazoles, hydroxybenzophenones, diphenylcyanoacrylates and mixtures thereof; optionally at least one sterically hindered amine; and optionally a further component selected from the group consisting of dyes, pigments and other additives. It is advantageous to use at least one pyridinedione derivative of the formula I as previously defined in an acrylonitrile-butadiene-styrene copolymer or styrene-acrylonitrile copolymer. Composition. Examples of suitable 2,6-dialkylated phenols are the esters of β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols and in particular: 3- (3,5-di-tert -Butyl-4-hydroxyphenyl) propionic acid octadecyl ester [CAS No. 2082-79-3], which is commercially available, for example, as Irganox® 1076 from Ciba Specialty Chemicals, Inc. The proportion of antioxidant is usually up to 2000 ppm, preferably 500 to 2000 ppm, based on the total weight of the polymer composition.

With regard to suitable phosphites and phosphonites, reference is made in full to what has been said above. Preferred phosphites and phosphonites are tris (2,4-di-tert-butylphenyl) phosphite [CAS No. 31570-04-4], which is commercially available, for example, as Irgafos® 168 from Ciba Specialty Chemicals, Inc. , Tetrakis (2,4-di-tert-butylphenyl) [1,1-biphenyl} -4,4'-diylbisphosphonite [CAS No. 119345-01-6], which is commercially available, for example, as Irgafos® P-EPQ from Fa Ciba Specialty Chemicals, Inc. and mixtures thereof. The proportion of phosphite and / or phosphonite is usually up to 2000 ppm, preferably 500 to 2000 ppm, based on the total weight of the polymer composition.

Advantageous polymer compositions contain both at least one 2,6-dialkylated phenol, preferably an ester of β- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid with mono- or polyhydric alcohols, as an antioxidant and at least one Phosphite and / or phosphonite as a costabilizer. The ratio of antioxidant to costabilizer is then usually in the range from 1:10 to 10: 1.

In addition, the polymer composition which contains at least one acrylonitrile-butadiene-styrene copolymer or a styrene-acrylonitrile copolymer can contain at least one further UV absorber. Suitable further UV absorbers are those mentioned above. The further UV absorbers are preferably selected from the group consisting of benzotriazoles, hydroxybenzophenones, diphenylcyanoacrylates and mixtures thereof.

Examples of suitable benzotriazoles are 2- (2'-hydroxyphenyl) benzotriazoles, preferably those mentioned above. Particular preference is given to: 2,4-di-tert-butyl-6- (5-chlorobenzotriazol-2-yl) phenol [CAS No. 3864-99-1], which is commercially available, for example, as Tinuvin® 327 from Fa. Ciba Specialty Chemicals, Inc. is available, 2-benzotriazol-2-yl-4-methylphenol [CAS No. 2440-22-4], which is commercially available, for example, as Tinuvin® P from Ciba Specialty Chemicals, Inc. ,

Examples of suitable hydroxybenzophenones are 2-hydroxybenzophenones. It is particularly preferred: 2-Hydroxy-4-n-octoxybenzophenone [CAS No. 1843-05-6], which is commercially available, for example, as Chimassorb® 81 from Ciba Specialty Chemicals, Inc.

Examples of suitable diphenylcyanoacrylates are: 1.S-bis- '-cyano-S'.S'-diphenylacryloyoxyl ^^ - bis' -cyano-S'.S'-diphenyl-acryloyl) oxy] methyl} propane [CAS No. 178671-58-4], which is commercially available, for example, under the name Uvinul® 3030 from BASF AG, Ludwigshafen; and ethyl 2-cyan-3,3-diphenylacrylate [CAS No. 5232-99-5], which is commercially available, for example, under the name Uvinul® 3035 from BASF AG, Ludwigshafen.

As a rule, the proportion of further UV absorber is up to 2% by weight, preferably 0.01-1.5% by weight, in particular 0.05-1% by weight, based on the total weight of the polymer composition. In the case of thin polymer layers, a higher proportion of UV absorber is generally used than thick polymer layers.

In addition, the acrylonitrile-butadiene-styrene copolymer or styrene-acrylonitrile copolymer composition may contain at least one sterically hindered amine. Suitable sterically hindered amines are those mentioned above. The sterically hindered amine is preferably a compound of the formula:

RNH- (CH ₂ ) ₃ -NR- (CH ₂ ) ₂ -NR- (CH ₂ ) ₃ -NHR [CAS No. 106990-43-6]

With

which is commercially available, for example, as Chimassorb® 119 from Ciba Specialty Chemicals, Inc., bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate [CAS No. 52829-07-9], the for example commercially available as Tinuvin® 770 from Ciba Specialty Chemicals, Inc. or mixtures thereof. As a rule, the proportion of sterically hindered amine is up to 2% by weight, preferably 0.1-1.5% by weight, in particular 0.1-1% by weight, very particularly preferably 0.1-0 , 5 wt .-%, based on the total weight of the polymer composition. In addition, the acrylonitrile-butadiene-styrene copolymer or styrene-acrylonitrile copolymer composition can contain at least one further component which is selected from the group consisting of dyes, pigments and other additives. Suitable dyes and pigments are those mentioned above. Advantageous acrylonitrile-butadiene-styrene copolymer or styrene-acrylonitrile copolymer compositions contain at least one pyridinedione derivative of the formula I as defined above and, as further components, the substances specified in one row of Table E (compositions 15.1 to 15.54). The proportions by weight of the individual constituents in compositions 15.1 to 15.54 are in the ranges given above, based on the total weight of the polymer composition.

Table E:

It is advantageous to use at least one pyridinedione derivative of the formula I in acrylonitrile-butadiene-styrene copolymer or styrene-acrylonitrile copolymer compositions which are used in components for automobiles and housings for electrical appliances.

The pyridinedione derivatives of the formula I to be used according to the invention and, if present, the compounds from groups a) to s) and / or the other additives from group t) are added to the plastic. The addition takes place in the usual way, for example by mixing with the plastic. The pyridinedione derivatives and, if appropriate, the further stabilizers can also be added to the starting monomer add and polymerize the mixture of monomers and stabilizers. It is also possible to add the pyridinedione derivatives and, if appropriate, the compounds from groups a) to s) and / or the other additives from group t) during the polymerization of the monomers. A prerequisite for addition before or during the polymerization is that the pyridinedione derivatives and, where appropriate, the compounds from groups a) to s) and / or the other additives from group t) are stable under the polymerization conditions, ie not or only stable decompose little.

The pyridinedione derivatives and optionally the compounds from groups a) to s) and / or the other additives from group t) are preferably added to the finished plastic. This is usually done according to mixing methods known per se, for example with melting at temperatures of 150 to 300 ° C. However, the components can also be mixed "cold" without melting and the powdery or granular mixture is only melted and homogenized during processing.

It goes without saying that the pyridinedione derivatives of the formula I and, if appropriate, the compounds from groups a) to s) and / or the other additives from group t), together or separately from one another, all at once, in portions or continuously, are constant over time or along a gradient. For example, one can add some of the pyridinedione derivatives already during the polymerization of the monomers and add the remainder only the final polymer, or can be the total amount of pyridinedione derivative to add to the finished polymer. ^"

Mixing is preferably carried out in a conventional extruder, it being possible for the components to be mixed or introduced individually, for example completely into the extruder via a funnel, or else in portions at a later point in the extruder to give the melted or solid product in the extruder. Single or twin screw extruders, for example, are particularly suitable for spray extrusion. A twin screw extruder is preferred.

The mixtures obtained can be pelletized or granulated, for example, or processed by generally known processes, for example by extrusion, injection molding, foaming with blowing agents, thermoforming, blow molding or calendaring.

The plastics can preferably be used to produce moldings (including semi-finished products, foils, films and foams) of all types, for example packaging and foils, for example for textiles, in particular packaging for cosmetics, perfumes and pharmaceuticals and packaging and foils for food, beverage bottles or packaging for cleaning agents , Furthermore, stretch films can be produced from thermoplastic molding compounds. In principle, every product can be protected by packaging that contains the pyridinedione derivatives of the formula I. The product to be protected is preferably selected from the group consisting of cosmetic products, pharmaceutical products, perfumes, foods and cleaning agents. Suitable cosmetic products include soap, body lotion, skin cream, shower bath, bubble bath, body spray, make-up, eyeliner, mascara, blush, lipstick, hair shampoo, hair conditioner, hair gel, hair wax, hair tonic, nail polish, nail polish remover, etc. The suitable pharmaceuticals Products include pharmaceutical compositions or drugs in the form of tablets, pills, dragées, suppositories, solutions, dry juice, suspensions and the like. Suitable foods include carbonated and non-carbonated drinks, for example carbonated drinks such as lemonade, beer, fruit juice spritzers, carbonated water, non-carbonated drinks such as wine, fruit juice, tea or coffee, fruit, meat, sausages, milk products such as milk, yoghurt, butter or cheese , animal and vegetable fats, baked goods, pasta, spices, sauces, pastes, pestos, funds, marks, ketchups, dressings etc. Suitable cleaning agents include household cleaners and industrial cleaners.

The pyridinedione derivatives of the formula I are particularly preferably used in thermoplastic molding compositions which contain polyolefins, for agricultural films and packaging films, in biaxially oriented polypropylene for stretch wrapping films, in polyethylene terephthalate or polyethylene naphthalate for bottles and other packaging containers, in polyvinyl butyral for laminated glass, in polystyrene for Blister packaging and other packaging containers, in polycarbonate for bottles, flacons and other packaging containers and moldings in polyvinyl chloride for packaging containers and foils or in polyvinyl alcohol for the production of foils.

If necessary, the films made of different polymers can be combined to form composite films by lamination or as extrusion laminates.

Furthermore, the properties of films can generally be improved by mono- or biaxial stretching. This is used, for example, to manufacture shrink films. Shrink films can be produced, for example, from polyethylene terephthalate, polyethylene, polyvinylidene chloride or polyvinyl chloride.

The materials stabilized using at least one pyridinedione derivative of the formula I show particular quality features in comparison to unstabilized materials and to materials which are stabilized with stabilizers from the prior art. The materials stabilized according to the invention are characterized by an extended exposure time, since damage by light only begins later. It also protects using at least one pyridinedione Derivative of formula I stabilized material not only the material to be stabilized, but also the packaged content.

The present invention furthermore relates to pyridinedione derivatives of the general formula I and, if appropriate, their tautomers and their preferred embodiments, which have already been listed above in connection with their use according to the invention.

If R ² in general formula I corresponds to a group NR ⁴ R ⁵ , the radicals R ⁴ and R ^{5 are} preferably different.

Furthermore, R ⁴ preferably has the meaning of R ¹ independently of R ¹ , R ^{5 has} the meaning of COR ⁶ .

R ⁶ then corresponds in particular to aryl or heteroaryl which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of d-ds-alkyl, Crd-alkoxy, cyano, CONZ ² Z ³ and C0 ₂ Z ⁴ , preferably phenyl, which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of dC ₆ -alkyl, dC ₆ -alkoxy, cyano, CONZ ² Z ³ and C0 ₂ Z ⁴ , particularly preferably phenyl, which is unsubstituted or carries one or more radicals which are independently selected from the group consisting of dd-alkyl, dC ₄ -alkoxy and cyano. The variables Z ² , Z ³ and Z ⁴ correspond to the definition given above.

Compounds of the formulas are also of particular interest

in what mean

R ¹ , R ² independently of one another are hydrogen, dC ₄ -alkyl, partially fluorinated or perfluorinated dd-alkyl, or phenyl which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of d- C ₄ - Alkyl, dd-alkoxy and cyano, R ⁴ , R ⁶ independently of one another and independently of R ¹ or R ² the meaning of R ¹ or R ² , n values of 1, 2, 3 or 4 and

R ³ for n is 1: hydrogen, dC ₈ -alkyl, the carbon chain of which can be interrupted by a group -O- and / or which is optionally substituted one or more times with the same or different radicals which are selected from the group consisting of Hydroxy, fluorine, carboxyl, dC ₄ -alkoxycarbonyl, dd-alkanoyloxy and aryl, where the aryl group is unsubstituted or bears one or more substituents which are independently selected from the group consisting of dd-alkyl and CC ₄ -alkoxy, Cyclopentyl or cyclohexyl, which are unsubstituted or carry one or more dC ₄ alkyl groups, or piperidinyl, which is unsubstituted or carries one or more dd alkyl groups, for n not equal to 1: n-valent C ₂ -C ₁₂ alkyl, n- valuable cyclopentyl, n-valent cyclohexyl or n-valent piperidinyl, which is unsubstituted or carries one or more dd-alkyl groups.

In particular, the connections shown below should be mentioned.

For n equal to 1:

where the variables have the meaning given above. For n equal to 2:

wherein R ¹ , R ² independently of one another denote hydrogen, dd-alkyl, partially fluorinated or perfluorinated dd-alkyl, or phenyl which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of d-C ₄ -Alkyl, dd-alkoxy and cyano,

R .4 ⁴ , _D R6 independently of one another and independently of R ¹ or R ² the meaning of R ¹ or R ² and C ₂ -C ₂ alkylene.

For n equal to 3:

in what mean

R ¹ , R ² independently of one another are hydrogen, dC ₄ -alkyl, partially fluorinated or perfluorinated dd-alkyl, or phenyl which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of d- C ₄ - Alkyl, dd-alkoxy and cyano, R ⁴ , R ⁶ independently of one another and independently of R or R ² the meaning of R ¹ or R ² and

R ³ trivalent C ₃ -C ₂ alkyl.

Examples of trivalent alkyl radicals are

H- C ^• CH, - - C -CH,

CH, CH, and

For n equal to 4:

in what mean

R ¹ , R ² independently of one another are hydrogen, dd-alkyl, partially fluorinated or perfluorinated dd-alkyl, or phenyl which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of d-C ₄ -alkyl , dC ₄ alkoxy and cyano,

R ⁴ , R ⁶ independently of one another and independently of R ¹ or R ² the meaning of R ¹ or R ² and

R ³ tetravalent C ₄ -C ₁₂ alkyl.

Examples of tetravalent alkyl radicals are CH, CH,

If n assumes values of 2, 3 or 4, the fragments are

preferably bound to different carbon atoms of the n-valent radical R ³ . In order to ensure this, a minimum chain length of the n-valent alkyl radical R ³ - was assumed to be a C ₂ , C ₃ or C ₄ alkyl chain for n equal to 2, 3 or 4.

In principle, two or three such fragments can in principle also be bound to the same carbon atom of the n-valent alkyl radical, but it can be expected that such pyridinedione derivatives generally do not have sufficient hydrolysis stability.

The following examples are intended to illustrate the invention without, however, restricting it

Preparation Examples

The synthesis of the pyridinedione derivatives was carried out in accordance with the two-stage route mentioned previously:

A) Preparation of the 5-dimethylaminomethylene-substituted intermediate

B) Reaction of the intermediate compound with the n-fold amine

to the target connection.

Example 1 :

A) Preparation of 1,4-dimethyl-5-dimethylaminomethylene-2,6-dioxo-3-cyano-1,2,5,6-tetra-hydropyridine

78.0 g (475 mmol) 1, 4-dimethyl-6-hydroxy-3-cyano-2-pyridone and 52.1 g (713 mmol) dimethylformamide are heated to 80 ° C. in acetic anhydride (360 ml). The reaction mixture is kept at this temperature for 1.5 hours and then cooled to room temperature. The product is filtered off and washed with acetic anhydride and ether. 97.7 g (94%) of 1,4-dimethyl-5-dimethylaminomethylene-2,6-dioxo-3-cyano-1,2,5,6-tetrahydropyridine are obtained.

¹ H NMR (d6-DMSO, 500 MHz): 2.34 (s, 3 H); 3.11 (s, 3H); 3.55 (s, 3H), 8.36 (s, 1H).

UV (acetonitrile): Λ _max (lg e) 374 nm (4.52).

B) Preparation of 5-butylaminomethylene-1, 4-dimethyl-2,6-dioxo-3-cyano-1, 2,5,6-tetrahydropyridine 5.00 g (22.8 mmol) 1, 4-dimethyl-5-dimethylaminomethylene-2,6-dioxo-3-cyano-1, 2,5,6-tetrahydropyridine are suspended in ethanol (115 ml) and 1, 67 g (22.8 mmol) of butylamine are added. The mixture is heated under reflux for 4 h and then cooled to room temperature. The product is filtered off and washed with ether. 3.70 g (65%) of 5-butylaminomethylene-1,4-dimethyl-2,6-dioxo-3-cyano-1,2,5,6-tetrahydropyridine are obtained as a pale yellow powder.

Mp: 176-177 ° C. ¹ H NMR (CDCIs, 500 MHz): 0.97 (t, J = 7.5 Hz, 3 H); 1.39-1.47 (m, 2H), 1.70-1.73 (m, 2H); 2.42 (s, 3H); 3.30 (s, 3H); 3.55 (q, J = 7.0 Hz, 2H); 7.79 (d, 1H, J = 13.5 Hz, 1H); 11.41 (br s, 1H).

UV (acetonitrile): Λ _max (ϊg e) 358 nm (4.61).

Examples 2-22 and Comparative Examples V1 and V2:

The remaining aminomethylene-substituted pyridinediones were prepared analogously to Example 1 by synthesis of the intermediate compound in step A) and reaction of the intermediate compound in step B) using the corresponding amines R ³ NH ₂ (n = 1) or in the case of Examples 20 to 22 using hexamethylene diamine (n = 2). Furthermore, analogous to comparative compounds V1 and V2 using the corresponding aromatic amines R ³ NH ₂ (R ³ equal to C ₆ H ₅ and o, o'-di-iso-C ₃ H ₇ -CeH ₃ ) were prepared. The melting points and spectroscopic properties of the corresponding pyridinedione derivatives and of the comparison compounds V1 and V2 are summarized in Tables 1a and 1b and 1c.

Table 1a (variable A in formula I in all cases CN)

Table 1 b

Table 1c (variable A in formula I in both cases CN)

II. Examples of use

Examples 23-34 and Comparative Examples V3 and V4: Incorporation of the pyridinedione derivatives into polyethylene terephthalate (PET)

A mixture of a polyethylene terephthalate (Polyclear T94 from Ter Hell & Co GmbH, Hamburg) and 200 to 5000 ppm (by weight) of the pyridinedione derivative or 2000 ppm (by weight) of the comparison compounds V1 and V2 was in a Berstorff twin-screw extruder (melt temperature : 275 ° C) homogenized and then granulated. The granules obtained in this way were then extruded in a Weber single-screw extruder through a slot die (melt temperature 225 ° C.) and pressed to a thickness of 300 μm using a roller take-off. The results are summarized in Tables 2a and 2b. On the one hand, the wavelengths below which less than 10 or 20% of the radiation penetrates the film are indicated. A value below and as close as possible to 400 nm means that the material under the film is well protected against UV radiation.

On the other hand, the yellowness index is given in the form of the yellowness index (Yl, measured in accordance with DIN 6167). A small value means a low yellowing of the polymer.

Table 2a

Table 2b

*) Maximum wavelength with a transmission <10% or <20%. The pyridinedione derivatives and the comparative compounds V1 and V2 could all be incorporated well into the PET film and filter most of the harmful UV radiation from the spectrum. However, the comparison compounds V1 and V2 show unacceptable Yl values. Example 35: Incorporation of a stabilizer mixture in PET A mixture of one part by weight of the pyridinedione derivative according to Example 2 and four parts by weight of the UV absorber Uvinul® 3030 (manufacturer: BASF Aktiengesellschaft) was incorporated into PET according to the method described above in a concentration of 2500 ppm (by weight). The results are shown in Table 3.

Table 3

*) Maximum wavelength with a transmission <10% or <20%.

Examples 36 and 37: Comparison of the pyridinedione derivative according to Example 2 with commercial UV absorbers

The commercially available UV absorbers Tinuvin® 1577 (Ciba Specialty Chemicals) and Cyasorb® UV 24 (Cytec Industries) were each incorporated in PET in a concentration of 2000 ppm (by weight) analogous to the manner described above. The results are shown in Table 4.

Table 4

*) Maximum wavelength with a transmission <10% or <20%.

Example 36 shows that the pyridinedione derivative according to Example 2, with a similar yellowness index, has a higher absorption in the longer-wave UV region than Tinuvin® 1577.

Example 37 shows that the pyridinedione derivative according to Example 2, with a similar UV absorption profile, has a significantly lower yellowing than Cyasorb® UV 24. Example 38: Exposure of the samples

The PET film from Example 23 was exposed in accordance with DIN 54004 and the absorption profile was determined. The data are shown in Table 5.

Table 5

It can be seen from Table 5 that the UV-absorbing effect of the pyridinedione derivative according to Example 2 does not decrease significantly even with prolonged exposure.

Example 39: UV barrier properties of the PET films

In order to test the barrier properties of the additized films, the lightfastness of dyes of known photostability was determined behind the PET film according to Example 23 (referred to as "a" in Table 6) and behind a non-additized film (referred to in Table 6) as "na" - not added) checked. Several wool samples dyed with the blue dyes of the European light fastness types 4, 5 and 6 (EN ISO 105-B01) were exposed in accordance with DIN 54004, the wool samples being covered with the PET films. The color difference ΔE of the exposed compared to the unexposed wool pieces was measured. A small color difference ΔE means little damage to the dye. Table 6 shows the color changes of the light fastness types.

Table 6:

The ΔE values after 0, 400 and 1200 h exposure show that the color change of the blue dyes under consideration is significantly less if a pyridinedione derivative is used according to the invention.

Claims

claims

1. Use of pyridinedione derivatives of the general formula

and optionally their tautomers, in which mean

R ^{2 is} independently of R ¹ the meaning of R ¹ or NR ⁴ R ⁵ ,

A CN, COR ⁷ , COOR ⁷ or CONR ⁷ R ⁸ ,

R ⁶ , R ⁷ , R ⁸ independently of one another and independently of R ¹ the meaning of R \ n values of 1, 2, 3 or 4 and

R ³ for n is 1:

Hydrogen, optionally substituted and / or optionally containing alkyl, alkenyl or alkynyl or optionally substituted cycloalkyl, cycloalkenyl or heterocycloalkyl, for n not equal to 1: an n-valent aliphatic or cycloaliphatic radical, which may optionally contain heteroatoms, to protect organic material from the damaging effects of light.

2. Use according to claim 1, wherein R ^{1 is} hydrogen,

CrC ₃₀ -AlkyI, the carbon chain of which may be interrupted by one or more non-adjacent groups selected from -O-, -S-, -NZ ¹ -, -CO- and -S0 ₂ - and / or which may be one or more is substituted with the same or different radicals which are selected from the group consisting of cyano, amino, hydroxy, halogen, carboxyl, C ₈ -C alkoxycarbonyl, C ₈ -C alkanoyloxy, aryl, heterocycloalkyl and heteroaryl, the aryl , Heterocycloalkyl. and heteroaryl groups are unsubstituted or carry one or more substituents which are selected independently of one another from the group consisting of CrC ₁₈ alkyl and Ci-Ce alkoxy,

C ₅ -C ₈ cycloalkyl or 5- to 8-membered heterocycloalkyl which are unsubstituted or carry one or more dd-alkyl groups, or

Aryl or heteroaryl which are unsubstituted or carry one or more radicals which are selected independently of one another from the group consisting of dC ₁₈ -alkyl, dd-alkoxy, cyano, CONZ ² Z ³ and C0 ₂ Z ⁴ ,

A CN, COR ⁷ , COOR ⁷ or CONR ⁷ R ⁸ , R ⁶ , R ⁷ , R ⁸ independently of one another and independently of R ¹ the meaning of R ¹ . n values of 1, 2, 3 or 4 and

R ³ for n is 1:

Hydrogen,

CrC ₃₀ alkyl, the carbon chain of which can be interrupted by one or more non-adjacent groups selected from -O-, -S-, -NZ ⁵ -, -CO- and -SO ₂ - and / or optionally one or more times the same or different radicals which are selected from the group consisting of cyano, amino, hydroxy, halogen, carboxyl, CrC ₁₈ alkoxycarbonyl, dC ₁₈ alkanoyloxy, aryl, heterocycloalkyl and heteroaryl, the aryl, heterocycloalkyl and heteroaryl groups being substituted are unsubstituted or carry one or more substituents which are independently selected from the group consisting of CrCι ₈ alkyl and dd-alkoxy, or. dd-Cycloalkyl or 5- to 8-membered heterocycloalkyl, which are unsubstituted or carry one or more dd-alkyl groups, for n not equal to 1: n-valent C ₂ -C ₃₀ alkyl, the carbon chain of which is selected by one or more non-adjacent groups can be interrupted from -O-, -S-, -NZ ⁶ -, -CO- and -S0 ₂ -, or n-valent C ₅ -C ₈ -ydoalkyl or n-valent 5- to 8-membered heterocycloalkyl, which are unsubstituted or carry one or more dC ₆ alkyl groups, where Z ¹ , Z ² , Z ³ , Z ⁴ , Z ⁵ and Z ⁶ each independently represent hydrogen, dC ₁₈ alkyl, aryl or heteroaryl, aryl and heteroaryl are each unsubstituted or carry one or more substituents selected from the group consisting of CrC ₆ alkyl, dd-alkoxy, hydroxy, carboxyl and cyano. Use according to claim 1, wherein

R ^{1 is} hydrogen, Crd ₅ alkyl, the carbon chain of which may be interrupted by one or more non-adjacent groups selected from -O-, -NZ ¹ - and -CO- and / or which may be substituted one or more times with the same or different radicals which are selected from the group consisting of cyano, amino, hydroxy, halogen, carboxyl, dd-alkoxycarbonyl, dd-alkanoyloxy and aryl, the aryl group being unsubstituted or bearing one or more substituents which are selected independently of one another the group consisting of CC ₆ -alkyl and dd-alkoxy, cyclopentyl or cyclohexyl, which are unsubstituted or carry one or more dd-alkyl groups,

Piperidinyl which is unsubstituted or carries one or more d-d-alkyl groups, or

Phenyl which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of dd-alky !, dd-alkoxy, cyano, CONZ ² Z ³ and C0 ₂ Z ⁴ ,

R ^{2 is} independently of R ¹ the meaning of R ¹ or NR ⁴ R ⁵ ,

A CN, COR ⁷ , COOR ⁷ or CONR ⁷ R ⁸ ,

R ⁶ , R ⁷ , R ⁸ independently of one another and independently of R ¹ the meaning of R \

n values of 1, 2,

3 or 4 and

R ³ for n is 1: Hydrogen, d-Ci5-alkyl, the carbon chain of which can be interrupted by one or more non-adjacent groups selected from -O-, -NZ ⁵ - and -CO- and / or which may be one or more times with the same or different radicals is substituted, which are selected from the group consisting of cyano, amino, hydroxy, halogen, carboxyl, dd-alkoxycarbonyl, Crd-alkanoyloxy and aryl, the aryl group being unsubstituted or bearing one or more substituents which are selected independently of one another from the group consisting of dC ₆ -AlkyI and dd-alkoxy,

Cyclopentyl or cyclohexyl which are unsubstituted or carry one or more d-d-alkyl groups, or

Piperidinyl, which is unsubstituted or carries one or more dd-alkyl groups, for n not equal to 1: n-valent C ₂ -C ₃₀ alkyl, the carbon chain of which is selected from one of more or more non-adjacent groups selected from -O-, -NZ ⁶ - and -CO- can be interrupted, or n-valent C ₅ -C ₈ cycloalkyl or n-valent 5- to 8-membered heterocycloalkyl, which are unsubstituted or carry one or more dd-alkyl groups, where Z \ Z ² , Z ³ , Z ⁴ , Z ⁵ and Z ⁶ each independently represent hydrogen, CC ₁₈ alkyl, aryl or heteroaryl, where aryl and heteroaryl are each unsubstituted or carry one or more substituents which are selected from the group consisting of d -Cβ-alkyl, dd-alkoxy, hydroxy, carboxyl and cyano.

4. Use according to claim 1, wherein

R ^{1 is} hydrogen, d-Cβ-alkyl, which is optionally substituted one or more times with the same or different radicals which are selected from the group consisting of halogen and aryl, the aryl group being unsubstituted or bearing one or more substituents which are selected independently of one another the group consisting of dd-alkyl and dd-alkoxy,

Cyclopentyl or cyclohexyl which are unsubstituted or carry one or more dC ₄ alkyl groups,

Piperidinyl which is unsubstituted or carries one or more d-d-alkyl groups, or

Phenyl which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of d-d-alkyl, d-d-alkoxy and cyano,

R ^{2 is} independently of R ¹ the meaning of R ¹ or NR ⁴ R ⁵ ,

A CN,

R ^6, independently of R ^{1, has} the meaning of R ¹ ,

n values of 1, 2, 3 or 4 and

R ³ for n is 1: hydrogen, dd-alkyl, the carbon chain of which may be interrupted by one or more non-adjacent groups selected from -O-, -NZ ⁵ - and -CO- and / or which may be one or more of the same or various residues which are selected from the group consisting of hydroxy, halogen, carboxyl, d-C ₆ -alkoxycarbonyl, dC ₆ -alkanoyloxy and aryl, the aryl group is unsubstituted or carries one or more substituents which are independently selected from the group consisting of dd-alkyl and dd-alkoxy, cyclopentyl or cyclohexyl which are unsubstituted or carry one or more dd-alkyl groups, or piperidinyl which is unsubstituted or carries one or more dd-alkyl groups, for n not equal to 1: n-valent C ₂ -C ₁₂ alkyl, the carbon chain of which may be interrupted by one or more non-adjacent groups selected from -O- and -NZ ⁶ -, n-valent Cyclopentyl or n-valent cyclohexyl, which are unsubstituted or carry one or more dd-alkyl groups, or n-valent 5- to 8-membered heterocycloalkyl, which is unsubstituted or carries one or more dC ₄ -alkyl groups, where Z ⁵ and Z ⁶ represent hydrogen or CC ₆ alkyl.

5. Use according to claim 1, wherein

R ^{1 is} hydrogen, dd-alkyl, partially fluorinated or perfluorinated dd-alkyl or

Phenyl which is unsubstituted or carries one or more radicals which are selected independently of one another from the group consisting of d-d-alkyl, d-C -alkoxy and cyano,

R ^{2 is} independently of R ¹ the meaning of R ¹ or NR ⁴ R ⁵ , R ⁴ , R ⁵ independently of one another and independently of R ¹ the meaning of R ¹ or COR ⁶ ,

A CN,

R ³ for n is 1:

Hydrogen,

CrC ₈ alkyl, the carbon chain of which can be interrupted by a group -O- and / or which is optionally substituted one or more times with the same or different radicals which are selected from the group consisting of hydroxyl, fluorine, carboxyl, dd-alkoxycarbonyl , dd-alkanoyloxy and aryl, where the aryl group is unsubstituted or carries one or more substituents which are independently selected from the group consisting of dC ₄ alkyl and dC ₄ alkoxy, cyclopentyl or cyclohexyl, which are unsubstituted or one or more bear dd-alkyl groups, or piperidinyl, which is unsubstituted or carries one or more dd-alkyl groups, for n not equal to 1: n-valent C ₂ -C ₁₂ alkyl, n-valent cyclopentyl, n-valent cyclohexyl or n-valent piperidinyl , which is unsubstituted or carries one or more dC -alkyl groups.

6. Use according to any one of the preceding claims, wherein the organic material to be protected is selected from the group consisting of plastics, plastic dispersions, lacquers, photographic emulsions, photographic layers, paper, human or animal skin, human or animal hair, cosmetic products, pharmaceutical products, cleaning agents and food.

7. Use according to claim 6 for the protection of plastics.

8. Use of at least one pyridinedione derivative of the general formula I as defined in any one of claims 1 to 5 for producing an ultraviolet light absorbing layer.

9. Use according to claim 8, wherein the layer consists of a thermoplastic material.

10. Use according to one of the preceding claims, wherein the organic material contains at least one pyridinedione derivative of the general formula I in an amount of 0.01 to 10 wt .-%, based on the total weight of the material.

11. Use according to one of the preceding claims together with at least one further light stabilizer which has at least one absorption maximum in the wavelength range from 280 to 320 nm.

12. A composition comprising an amount of at least one pyridinedione derivative of the general formula I which protects against the damaging action of light, as defined in any of claims 1 to 5, and at least one organic material.

13. pyridinedione derivatives of the general formula I and optionally their tautomers according to claims 1 to 5.