An interlayer film for laminated glass comprising a mixture of two tris-resorcinol triazine as an UV absorber

Abstract

The present invention relates to an interlayer film for laminated glass comprising a polyvinyl acetal, a plasticizer, and a resorcinol triazine mixture comprising at least a first tris-resorcinol triazine of the formula (I) and a second tris-resorcinol triazine of the formula (II), wherein the first tris-resorcinol triazine and the second tris-resorcinol triazine are different. It also relates to a laminated glass comprising the interlayer film; and to a use of the resorcinol triazine mixture as a UV absorber in an interlayer film for laminated glass.

Description

[0001] BASF SE 250175W001

[0002] An interlayer film for laminated glass comprising a mixture of two tris-resorcinol triazine as an UV absorber

[0003] The present invention relates to an interlayer film for laminated glass comprising a polyvinyl acetal, a plasticizer, a resorcinol triazine mixture comprising a first tris-resorcinol triazine of formula (I) and a second tris-resorcinol triazine of formula (II) as defined below. It also relates to a laminated glass comprising the interlayer film; and to a use of the resorcinol triazine mixture as a UV absorber in an interlayer film for laminated glass.

[0004] For many decades, commercially available plasticized polyvinyl butyral (PVB) film for laminated glass has been supplemented with UV absorbers to block a portion of the UV radiation from natural light. This is an efficient way of ensuring protection against harmful UV radiation for people or objects behind the laminated glass.

[0005] Tinuvin® 326 (2-(5-chloro-2H-benzotriazole-2-yl)-6-(1 ,1 -dimethylethyl)-4-methyl)phenol) is a derivative of benzotriazole and is widely used as UV absorber in such laminates and known for its outstanding long-term stability and high absorption performance in almost the entire UV range. In addition, it can be introduced into the film formulation in a particularly simple manner during extrusion since it is relatively soluble in the commonly used plasticizers used for PVB and can thus be dissolved in the plasticizer prior to extrusion. However, Tinuvin® 326 is under regulatory scrutiny with respect to environmental hazards. Tinuvin® 326 does not readily degrade, which can lead to accumulation in the environment over time.

[0006] Registration, Evaluation, Authorization and Restriction of Chemicals" (REACH) is a European Union regulation that oversees the production and use of chemicals based on their environmental and human health impacts. Substances that meet specific criteria are classified as persistent, bio-accumulative, and toxic (PBT). Chemicals with PBT status may be added to an authorization list, potentially leading to their ban in the European Union. Authorities in other regions or countries may follow such decisions. Some UV absorbers (UVAs), particularly those of the hydroxyphenyl-benzotriazoles class, have been assigned PBT status and were banned by 2018. One such UVA, 2,4-di-tert-butyl-6-(5-chlorobenzotriazol-2-yl)phenol (Tinuvin® 327), is currently used in certain PVB interlayers for architectural applications like windows, balustrades, and skylights, and has received PBT status. Tinuvin® 326 was due to its persistency and bioaccumulation potential added by the EU REACH authority to the list of substances of very high concern in 2024. Consequently, there is a need to identify suitable alternative UVAs with improved environmental profile forBASF SE 250175W001

[0007] these PVB interlayers in case the use of the currently predominant benzotriazole-based UVAs will be prohibited in laminated glass interlayers and other applications.

[0008] Alternatives to benzotriazole-based UVAs have been, for example, disclosed in W02003 / 004557A1. Hydroxyphenyl triazines-based UVAs specified there show a high compatibility with many polymers while at the same time being relatively safe additives from an ecological point of view. Nonetheless, many types of these hydroxyphenyl triazines are less effective against UV radiation or have a strong yellowish color, which poses a disadvantage as it affects the color of the polymer to which the additive is added. US2019291390A1 discloses different types of benzotriazoles and hydroxyphenyl triazines and their properties related to UV absorption and yellow-color index. The data for Tinuvin® 460, Tinuvin® 400, Tinuvin® 477, and Tinuvin® 1600 show either a comparable UV absorption grade or a comparable color index to the benzotriazole Tinuvin® 326 but not both.

[0009] Because of these and other problems in the art, which are described herein, an object of the invention was to provide an interlayer film with an improved environmental profile, low initial color and long-term high UV absorption.

[0010] According to the invention, this object is solved by the interlayer specified in claim 1, the laminated glass specified in claim 14 and the use of the resorcinol triazine mixture in claim 15.

[0011] Advantageous embodiments of the invention are indicated in the dependent claims and are explained in detail below, as is the general idea of the invention.

[0012] The interlayer film for laminated glass according to the invention comprises

[0013] - a polyvinyl acetal,

[0014] - a plasticizer,

[0015] - a resorcinol triazine mixture comprising at least

[0016] - a first tris-resorcinol triazine of the formula (I),

[0017]

[0018] BASF SE 250175W001

[0019] and

[0020] - a second tris-resorcinol triazine of the formula (II).

[0021]

[0022] Ai, A2, A3, A4, AS, are independently hydrogen, Ci-Cisalkyl, Ci-Cisalkyl substituted by 1, 2 or 3 radicals selected from the group consisting of -OH, C2-Cisalkenyloxy, -C(O)OYi and -0C(0)Y2 with Yi and Y2 being independently Ci-Cisalkyl; Cs-Csoalkyl interrupted by oxygen or Cs-Csohydroxyalkyl interrupted by oxygen. Di, D2, D3, D4 and Ds are independently hydrogen or Ci-Cisalkyl substituted by one radical of - C(O)OZi, wherein Z1, being Ci-Cisalkyl; Cs-Csoalkyl interrupted by oxygen or Cs-Csohydroxyalkyl interrupted by oxygen. An essential aspect of the invention is that the first resorcinol triazine and the second resorcinol triazine are two different tris-resorcinol triazines. The term “different” in this regard means that at least one residue group of the first tris-resorcinol triazine is different from a residue group located at the same position in the second tris-resorcinol triazine. Preferably at least one difference of the first tris-resorcinol to the second tris-resorcinol is that Ds is hydrogen and As is Ci-Cisalkyl, Ci-Cisalkyl substituted by 1, 2 or 3 radicals selected from the group consisting of -OH, C2-Cisalkenyloxy, -C(O)OYi and -0C(0)Y2 with Y1 and Y2 being independently C1-Cisalkyl; Cs-Csoalkyl interrupted by oxygen or Cs-Csohydroxyalkyl interrupted by oxygen.

[0023] The inventive combination of two different resorcinol triazines, each with phenyl residues containing two hydroxy- or alkoxy-groups, reveals a synergistic enhancement in UV protection. This mixture surprisingly provides comprehensive coverage across the UV spectrum, especially in the most relevant range of 300 nm to 400 nm. Additionally, the inventors did not anticipate that the interlayer film with the mixture of both triazines resulted in a less colorful appearance, as the interaction of both triazines with each other effectively reduced or neutralized their inherent hues, leading to a versatile product with broad commercial applicability.

[0024] Polyvinyl acetal is usually obtainable by the reaction of at least one polyvinyl alcohol with one or more aliphatic unbranched aldehyde containing 2 to 10 carbon atoms, preferably n-butyraldehyde. The polyvinyl acetal is preferably polyvinyl butyral (PVB). PVB is often used as an interlayer in laminated panes, especially in automative glazing, because it provides excellent adhesion and impact resistance, enhancing the safetyBASF SE 250175W001

[0025] and durability of the glass. It also possesses favorable properties to allow the incorporation of triazine-based UV-absorbing additives.

[0026] The polyvinyl alcohols or ethylene vinyl alcohol copolymers used to produce the polyvinyl acetals may be identical or different, pure or a mixture of polyvinyl alcohols or ethylene vinyl alcohol copolymers with different degree of polymerisation or degree of hydrolysis.

[0027] The lower limit of an acetalization degree of the polyvinyl acetal resin is usually 40 mol%, and preferably 60 mol%. The upper limit of an acetalization degree of the polyvinyl acetal resin is usually 85 mol%, and preferably 75 mol%. In this acetalization range, the polyvinyl acetal, especially PVB, possesses descent adhesion properties and a high structural integrity but is still flexible enough for most applications in laminated glass.

[0028] In the case where a polyvinyl butyral resin is used as the polyvinyl acetal resin, the minimum amount of the hydroxyl group is usually 15 mol%. In the case where a polyvinyl butyral resin is used as the polyvinyl acetal resin, the maximum amount of the hydroxyl group is usually 35 mol%. The polyvinyl alcohol content can be determined in accordance with DIN ISO 53240 (PVA content).

[0029] A suitable plasticizer can be selected from the following groups:

[0030] - esters of polyvalent aliphatic or aromatic acids, for example dialkyl adipates (e.g. dihexyl adipate, dioctyl adipate, hexyl cyclohexyl adipate, mixtures of heptyl adipates and nonyl adipates, diisononyl adipate, heptyl nonyl adipate), and esters of adipic acid with cycloaliphatic ester alcohols or ester alcohols containing ether compounds, dialkyl sebacates, such as dibutyl sebacate, and also esters of sebacic acid with cycloaliphatic ester alcohols or ester alcohols containing ether compounds, esters of phthalic acid, such as butyl benzyl phthalate or bis-2-butoxyethyl phthalate;

[0031] - esters or ethers of polyvalent aliphatic or aromatic alcohols or oligo ether glycols with one or more unbranched or branched aliphatic or aromatic substituents, for example esters of glycerol, diglycols, triglycols or tetraglycols with linear or branched aliphatic or cycloaliphatic carboxylic acids; examples of the latter group include diethylene glycol-bis-(2-ethyl hexanoate), triethylene glycol-bis-(2-ethyl hexanoate), triethylene glycol-bis-(2-ethyl butanoate), tetraethylene glycol-bis-n-heptanoate, triethylene glycol-bis-n-heptanoate, triethylene glycol-bis-n-hexanoate, tetraethylene glycol dimethyl ether and / or dipropylene glycol benzoate;

[0032] - phosphates with aliphatic or aromatic ester alcohols, such as tris(2-ethylhexyl)phosphate (TOF), triethyl phosphate, diphenyl-2-ethylhexyl phosphate, and / or tricresyl phosphate;BASF SE 250175W001

[0033] esters of citric acid, succinic acid and / or fumaric acid.

[0034] Plasticizers make the polyvinyl acetal softer and more flexible, which can improve its processing characteristics and end-use performance. This is especially important in applications where the interlayer needs to withstand bending, stretching, or other forms of mechanical stress without cracking or breaking, as is typically required for the manufacture of automotive glazing, which often involves bending in one or more directions.

[0035] Mixtures of different plasticizers are possible.

[0036] Preferably, the plasticizer is selected from esters of glycerol, diglycols, triglycols or tetraglycols with linear or branched aliphatic or cycloaliphatic carboxylic acids. These esters provide an optimal balance of flexibility, durability, and compatibility with the polymer matrix, enhancing the performance and longevity of the interlayer containing laminated glass.

[0037] More preferably, the plasticizer is selected from diethylene glycol-bis-(2-ethyl hexanoate), triethylene glycol-bis-(2-ethyl hexanoate), triethylene glycol-bis-(2-ethyl butanoate), tetraethylene glycol-bis-n-heptanoate, triethylene glycol-bis-n-heptanoate, triethylene glycol-bis-n-hexanoate, tetraethylene glycol dimethyl ether and / or dipropylene glycol benzoate. In particular, the plasticizer is triethylene glycol bis (2-ethyl hexanoate). Triethylene glycol bis (2-ethyl hexanoate) is an particularly favorable plasticizer, as it offers excellent compatibility with polyvinyl acetal and maintains its plasticizing effect over a long time.

[0038] The interlayer film comprises usually at least 10 wt%, such as 10 to 45 wt%, preferably 20 to 40.0 wt% and in particular 25 to 35 wt% of the plasticizer.

[0039] The interlayer film often contains further additives, such as residual quantities of water, adhesion regulators, optical brighteners or fluorescent additives, colorants, processing aids, inorganic or organic nanoparticles, pyrogenic silicic acid and / or surface active substances and adhesion promoters, such as, e.g., magnesium 2-ethylbutyrate.

[0040] The first resorcinol triazine is of formula (I)BASF SE 250175W001

[0041]

[0042] wherein A1, A2, A3, A4 and As are independently hydrogen, Ci-Cisalkyl or Ci-Cisalkyl substituted by 1, 2 or 3 radicals selected from the group consisting of -OH, C2-Cisalkenyloxy, -C(O)OYi and -OC(O)Y2 with Y1 and Y2 being independently Ci-Cisalkyl; Cs-Csoalkyl interrupted by oxygen or Cs-Csohydroxyalkyl interrupted by oxygen.

[0043] The second resorcinol triazine is of formula (II),

[0044]

[0045] wherein Di , D2, D3, D4 and Ds are hydrogen or Ci-Cisalkyl substituted by one radical of - C(O)OZi, with Z1 being Ci-Cisalkyl; Cs-Csoalkyl interrupted by oxygen or Cs-Csohydroxyalkyl interrupted by oxygen.

[0046] In the context of the invention, "Cx-Cyalkyl " and " Cx-Cyalkyl substituted by 1, 2 or 3 radicals" can refer to both linear and / or branched alkyl chains, where x is a natural number and y is a natural number greater than x. With other words "Cx-Cyalkyl " and " Cx-Cyalkyl substituted by 1, 2 or 3 radicals" refer to carbon chains that can vary in length and structure. These carbon chains can be either linear or any kind of branched structure, unless otherwise specified. For example, Ci-Cisalkyl can be any linear alkyl-group starting from a methylgroup up to an octadecyl-group. Alternatively, Ci-Cisalkyl can also be any alkyl-isomer having at least 4 carbon atoms (iso-butyl) and having at maximum 18 carbon atoms (for example iso-octadecyl).

[0047] Examples of Ci-Cisalkyl are methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, 2-ethylbutyl, n-pentyl, isopentyl, 1 -methylpentyl, 1 ,3-dimethylbutyl, n-hexyl, 1 -methylhexyl, n-heptyl, isoheptyl,BASF SE 250175W001

[0048] 1 ,1 ,3,3-tetramethylbutyl, 1 -methylheptyl, 3-methylheptyl, n-octyl, 2-ethylhexyl, 1 ,1 ,3-trimethylhexyl, 1, 1,3,3-tetramethylpentyl, nonyl, decyl, undecyl, 1 -methylundecyl, dodecyl, 1 ,1 ,3,3,5,5-hexamethylhexyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl. Preferably, Ci-Csalkyl is methyl, n-butyl, 2-ethylhexyl or an isomeric mixture of octyl.

[0049] The group of -C(O)OYi has the formula

[0050]

[0051] and the group of -0C(0)Y2 has the formula

[0052]

[0053] Correspondingly, the group of -C(O)OZi has the formula

[0054]

[0055] The asterisk (*) symbol indicates the position of the bond with the substituted alkyl group.

[0056] Relating to the first tris-resorcinol triazine and the second tris-resorcinol triazine, examples of Ci-Cisalkyl, preferably Ca-Cisalkyl, are substituted by 1, 2 or 3 radicals are selected from the group consisting of -OH, C2-Cisalkenyloxy, -C(O)OYi and -0C(0)Y2, such as

[0057]

[0058] An example of Cs-Csoalkyl interrupted by one or more oxygen is -(CH2CH2-O-)3-CH3.

[0059] Examples of Cs-Csohydroxyalkyl interrupted by oxygen are

[0060]

[0061] BASF SE 250175W001

[0062] Preferably, Ai, A2, A3, A4 and As are independently hydrogen or Ci-Cisalkyl.

[0063] In a preferred embodiment, A2 is hydrogen, As is hydrogen or Ci-Cisalkyl, and A1, A3, and A4 are independently Ci-Cisalkyl. More preferred, A2 is hydrogen and A1, A3, A4 and As are independently C1-Cisalkyl. It was surprising and unexpected for the inventors that with higher alkoxylation, in addition to high UV absorption values, the solubility with common polyacetals also increased.

[0064] In a preferred embodiment, As is hydrogen or Ci-Cisalkyl, preferably As is Ci-Cisalkyl.

[0065] I ndependently from the fact whether A2 is hydrogen, Ci-C alkyl or Ci-Cisalkyl substituted by 1, 2 or 3 radicals as defined above, A1, A3, A4 and As are preferably independently methyl, n-butyl, 2-ethylhexyl or an isomeric mixture of octyl, preferably n-butyl.

[0066] In one embodiment according to the invention, A2 is hydrogen and A1, A3, A4 and As are independently methyl, n-butyl, 2-ethylhexyl or an isomeric mixture of octyl, preferably n-butyl. More preferably, the first tris-resorcinol triazine is of the formula (I’).

[0067]

[0068] The first tris-resorcinol triazine of formula (I’) shows a high solubility in polyacetal, especially in PVB.

[0069] In another embodiment according to the invention, A2 and As are hydrogen, and A1, A3, and A4 are independently methyl, n-butyl, 2-ethylhexyl or an isomeric mixture of octyl, preferably n-butyl. Preferably, the first resorcinol triazine is of the formula (I”)BASF SE 250175W001

[0070]

[0071] Preferably, Z1 is Ci-Cisalkyl. More preferably, Z1 is Ce-Ci2-alkyl, in particular preferably n-hexyl, n-heptyl or n-octyl.

[0072] In a preferred embodiment of the invention, D2 and D5 are both hydrogens and Di, D3 and D4 are independently Ci-Cisalkyl substituted by one radical -C(O)OZi, wherein Z1 is preferably Ce-Ci2-alkyl, more preferably n-hexyl, n-heptyl, iso-octyl, 2-ethylhexyl or n-octyl. Especially -C(O)OZi groups with a carbon portion of C6-C12 possess a good color appearance while still maintaining high solubility in many polymer matrices.

[0073] In a particularly preferred embodiment of the invention the second tris-resorcinol triazine is of the formula (II’).

[0074]

[0075] In a further preferred form of the resorcinol triazine mixture, the resorcinol triazine mixture comprises at least a first tris-resorcinol triazines of the formula (I’) or (I”) and a second tris-resorcinol triazines of the formula (IT). The resorcinol triazine mixture can also comprise at least a first tris-resorcinol triazines of the formula (I’), a second resorcinol triazines of the formula (II’) and a third tris-resorcinol triazines of the formula (I”). In another preferred form, the resorcinol triazine mixture consists of exactly two different tris-resorcinol triazines, preferably the resorcinol triazine mixture consists of a first tris-resorcinol triazines of the formula (I’) or (I”)BASF SE 250175W001

[0076] and a second tris-resorcinol triazines of the formula (II’). The combination of these tris-resorcinol triazines exhibits surprisingly improved UV absorption values without compromising color appearance.

[0077] In a more particularly preferred embodiment of the invention the second tris-resorcinol triazine is of the formula (II”).

[0078]

[0079] “Iso-CsH ” can independently be any type of iso-octyl, such as for example 3,5-dimethylhexyl, 3-methylheptyl, 4-methyl heptyl or 2-ethylhexyl preferably iso-CsH is an 2-ethylhexyl.

[0080] In a further preferred form of the resorcinol triazine mixture, the resorcinol triazine mixture comprises at least a first tris-resorcinol triazines of the formula (I’) or (I”) and a second tris-resorcinol triazines of the formula (II”). The resorcinol triazine mixture can also comprise at least a first tris-resorcinol triazines of the formula (I’), a second resorcinol triazines of the formula (II”) and a third tris-resorcinol triazines of the formula (I”). In another preferred form, the resorcinol triazine mixture consists of exactly two different tris-resorcinol triazines, preferably the resorcinol triazine mixture consists of a first tris-resorcinol triazines of the formula (I’) or (I”) and a second tris-resorcinol triazines of the formula (II”). The combination of these tris-resorcinol triazines exhibits surprisingly improved UV absorption values without compromising color appearance.

[0081] Preferably, the first tris-resorcinol triazine and the second tris-resorcinol triazine are in a mixing ratio of at least 2:1 and at most 15:1, preferably at least 3:1 and at most 12:1, particularly preferably at least 5:1 and at most 10:1, for example 7:1 (first tris-resorcinol triazine:second tris-resorcinol triazine). This mixing ratio is based on the weight of both resorcinol triazine compounds. The ratio achieves an optimal balance between high long-term UV absorption and a low yellow index (Yl) of the mixture.

[0082] Preferably, the resorcinol triazine mixture is present in the interlayer film in an amount of less than 2.0 wt.%, more preferably from 0.01 wt.% to 2.0 wt.%, more preferably from 0.1 wt.% to 1.0 wt.%, particularly preferablyBASF SE 250175W001

[0083] from 0.2 wt.% to 0.8 wt.%. In this range, the resorcinol triazine mixture maintains optimal properties for UV absorption without significantly altering the color appearance of the interlayer.

[0084] The interlayer film may additionally comprise a benzotriazole-based UV absorber.

[0085] The interlayer film may comprise

[0086] - the polyvinyl acetal,

[0087] - the plasticizer,

[0088] - the resorcinol triazine mixture comprising at least a first tris-resorcinol triazine of formula (I) and a second tris-resorcinol triazine of formula (II), preferably the resorcinol triazine mixture comprising at least or only a first tris-resorcinol triazine of formula (I’) and a second tris-resorcinol triazine of formula (II”), and - the benzotriazole-based UV absorber.

[0089] Suitable benzotriazole-based UV absorbers are 2-(2'-hydroxyphenyl)benzotriazole derivatives, for example 2-(2'-hydroxy-5'-methylphenyl)-benzotriazole, 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(5'-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(2'-hydroxy-5'-(1 ,1 ,3,3-tetramethylbutyl)phenyl)benzotriazole, 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)-5-chloro-benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-methylphenyl)-5-chloro-benzotriazole, 2-(3'-sec-butyl-5'-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(2'-hydroxy-4'-octyloxyphenyl)benzotriazole, 2-(3',5'-di-tert-amyl-2'-hydroxyphenyl)benzotriazole, 2-(3',5'-bis-(a,a-dimethylbenzyl)-2'-hydroxyphenyl)benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonylethyl) phenyl)-5-chloro-benzotriazole, 2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)-carbonyl-ethyl]-2'-hydroxyphenyl)-5-chloro-benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)-phenyl)-5-chloro-benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl)benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonylethyl)phenyl)benzotriazole, 2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)carbonylethyl]-2'-hydroxy-phenyl)benzotriazole, 2-(3'-dodecyl-2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-isooctyloxycarbonylethyl )p heny I benzotri azole, 2, 2'-methy lene- bis [4-( 1 , 1 , 3, 3-tetramethyl b uty l)-6-benzotriazole-2-yl phenol]; the transesterification product of 2-[3'-tert-butyl-5'-(2-methoxycarbonylethyl)-2'-hydroxyphenyl]-2H-benzotriazole with polyethylene glycol 300;

[0090]

[0091] where R = 3'-tert-butyl-4'-hydroxy-5'-2H-benzotriazol-2-ylphenyl, 2-[2'-hydroxy-3'-(a,a-dimethylbenzyl)-5'-(1 , 1 , 3, 3-tetramethyl b uty l)-p heny I] benzotri azole; 2-[2'-hyd roxy-3'-( 1 , 1 , 3, 3-tetramethyl b uty l)-5'- (a , a-di methyl-benzyl)-phenyl] benzotriazole.BASF SE 250175W001

[0092] Preferably, the benzotriazole-based UV absorber is of the formula (III)

[0093]

[0094] The weight ratio between the resorcinol triazines mixture of the first tris-resorcinol triazine formula (I) and the second tris-resorcinol triazine (II), preferably the resorcinol triazines of the formula (I’) and (II”) or the resorcinol triazines of the formula (I”) and (II”), and the benzotriazole-based UV absorber can be in the range from 10:1 to 1:10, preferably 5:1 to 1:5, and in particular from 3:1 to 1 :3.

[0095] The benzotriazole-based UV absorber can be present in the interlayer film in an amount of less than 2.0 wt.%, preferably less than 1.0 wt.%, and in particular less than 0.6 wt.%. The benzotriazole-based UV absorber can be present in the interlayer film in an amount from 0.01 wt.% to 2.0 wt.%, preferably from 0.03 wt.% to 1.0 wt.%, and in particular from 0.07 wt.% to 0.6 wt.%.

[0096] The tris-resorcinol triazines can also be added together with a solvent, with possible residues of such a solvent potentially remaining in the laminate. For example, in the case of the second tris-resorcinol triazine according to (II’) or (II”), the solvent 2-methoxy-1 -propyl acetate can also be used. However, the presence of a small amount of solvent added as described above not only has no influence on the UV stability and absorption properties but also does not compromise film quality.

[0097] The following embodiments below demonstrate exceptionally high UV absorption values overtime, ensuring effective protection against ultraviolet radiation. They exhibit decent mixing properties, resulting in a homogeneous interlayer that enhances overall material stability. Additionally, these embodiments maintain minimal yellowing overtime, preserving their aesthetic quality.

[0098] In a preferred embodiment, the interlayer film comprises

[0099] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0100] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0101] - optionally the benzotriazole-based UV absorber, more preferably the benzotriazole-based UV of the formula (III), andBASF SE 250175W001

[0102] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I) and the second tris-resorcinol triazine of formula (II), wherein A2 is hydrogen, and A1, A3, A4 as well as As are independently Ci-Cisalkyl.

[0103] In another preferred embodiment, the interlayer film comprises

[0104] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0105] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0106] - optionally the benzotriazole-based UV absorber, more preferably the benzotriazole-based UV of the formula (III), and

[0107] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I) and the second tris-resorcinol triazine of formula (II), wherein A2 is hydrogen, and A1, A3, A4 as well as As are independently methyl, n-butyl, 2-ethylhexyl or an isomeric mixture of octyl.

[0108] In another preferred embodiment, the interlayer film comprises

[0109] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0110] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0111] - optionally the benzotriazole-based UV absorber, more preferably the benzotriazole-based UV of the formula (III), and

[0112] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I) and the second tris-resorcinol triazine of formula (II), wherein A2 and As are hydrogen, and A1, A3 as well as A4are independently Ci-Cisalkyl.

[0113] In another preferred embodiment, the interlayer film comprises

[0114] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0115] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0116] - optionally the benzotriazole-based UV absorber, more preferably the benzotriazole-based UV of the formula (III), and

[0117] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I) and the second tris-resorcinol triazine of formula (II), wherein A2 and As are hydrogen and A1, A3 as well as A4are independently methyl, n-butyl, 2-ethylhexyl or an isomeric mixture of octyl.

[0118] In another preferred embodiment, the interlayer film comprises

[0119] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0120] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),BASF SE 250175W001

[0121] - optionally the benzotriazole-based UV absorber, more preferably the benzotriazole-based UV of the formula (III), and

[0122] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I) and the second tris-resorcinol triazine of formula (II), wherein Di, D2, D3, D4 and D5 are independently hydrogen or Ci-Cisalkyl substituted by one radical of -C(O)OZi.

[0123] In another preferred embodiment, the interlayer film comprises

[0124] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0125] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0126] - optionally the benzotriazole-based UV absorber, more preferably the benzotriazole-based UV of the formula (III), and

[0127] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I) and the second tris-resorcinol triazine of formula (II), wherein D2 and D5 are hydrogen and Di, D3 and D4 are independently Ci-Cisalkyl substituted by one radical of -C(O)OZi.

[0128] In another preferred embodiment, the interlayer film comprises

[0129] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0130] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0131] - optionally the benzotriazole-based UV absorber, more preferably the benzotriazole-based UV of the formula (III), and

[0132] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I) and the second tris-resorcinol triazine of formula (II), wherein D2 and Ds are hydrogen and Di, D3 and D4 are independently Ci-Cisalkyl substituted by one radical of -C(O)OZi and Z1 is Ce-Ci2-alkyl, preferably n-hexyl, n-heptyl, iso-octyl, 2-ethylhexyl or n-octyl.

[0133] In another preferred embodiment, the interlayer film comprises

[0134] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0135] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0136] - optionally the benzotriazole-based UV absorber, more preferably the benzotriazole-based UV of the formula (III), and

[0137] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I) and the second tris-resorcinol triazine of formula (II), wherein A2 is hydrogen, A1, A3, A4as well as As are independently Ci-Cisalkyl, and Di, D2, D3, D4 and Ds are independently hydrogen or C1- Cisalkyl substituted by one radical of -C(O)OZi.BASF SE 250175W001

[0138] In another preferred embodiment, the interlayer film comprises

[0139] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0140] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0141] - optionally the benzotriazole-based UV absorber, more preferably the benzotriazole-based UV of the formula (III), and

[0142] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I) and the second tris-resorcinol triazine of formula (II), wherein A2 and As are hydrogen and A1, A3 as well as A4are independently Ci-Cisalkyl, and Di, D2, D3, D4 and Ds are independently hydrogen or Ci-Cisalkyl substituted by one radical of -C(O)OZi.

[0143] In another preferred embodiment, the interlayer film comprises

[0144] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0145] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0146] - optionally the benzotriazole-based UV absorber, more preferably the benzotriazole-based UV of the formula (III), and

[0147] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I) and the second tris-resorcinol triazine of formula (II), wherein A2 is hydrogen, A1, A3, A4as well as As are independently Ci-Cisalkyl, D2 and Ds are hydrogen, and Di, D3 and D4 are independently Ci-Cisalkyl substituted by one radical of -C(O)OZi, wherein Z1 is preferably Ci-Cisalkyl, more preferably Ce-Ci2-alkyl, in particular n-hexyl, n-heptyl, iso-octyl, 2-ethylhexyl or n-octyl.

[0148] In another preferred embodiment, the interlayer film comprises

[0149] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0150] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0151] - optionally the benzotriazole-based UV absorber, more preferably the benzotriazole-based UV of the formula (III), and

[0152] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I) and the second tris-resorcinol triazine of formula (II), wherein A2 and As are hydrogen and A1, A3 as well as A4 are independently Ci-Cisalkyl, D2 and Ds are hydrogen, and Di, D3 and D4 are independently Ci-Cisalkyl substituted by one radical of -C(O)OZi, wherein Z1 is preferably Ci-Cisalkyl, more preferably Ce-Ci2-alkyl, in particular n-hexyl, n-heptyl, iso-octyl, 2-ethylhexyl or n-octyl.

[0153] In another preferred embodiment, the interlayer film comprises

[0154] - the polyvinyl acetal, which is preferably polyvinyl butyral,BASF SE 250175W001

[0155] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0156] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I’) and the second tris-resorcinol triazine of formula (II) and

[0157] - the benzotriazole-based UV absorber, preferably the benzotriazole-based UV of the formula (III).

[0158] In another preferred embodiment, the interlayer film comprises

[0159] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0160] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0161] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I”) and the second tris-resorcinol triazine of formula (II), and

[0162] - the benzotriazole-based UV absorber, preferably the benzotriazole-based UV of the formula (III).

[0163] In another preferred embodiment, the interlayer film comprises

[0164] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0165] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0166] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I’) and the second tris-resorcinol triazine of formula (II’), and

[0167] - the benzotriazole-based UV absorber, preferably the benzotriazole-based UV of the formula (III).

[0168] In another preferred embodiment, the interlayer film comprises

[0169] - the polyvinyl acetal, which is preferably polyvinyl butyral,

[0170] - the plasticizer, which contains or is preferably triethylene glycol bis(2-ethyl hexanoate),

[0171] - the resorcinol triazine mixture at least comprising, preferably consisting of, the first tris-resorcinol triazine of formula (I”) and the second tris-resorcinol triazine of formula (II’), and

[0172] - the benzotriazole-based UV absorber, preferably the benzotriazole-based UV of the formula (III).

[0173] The interlayer according to the present invention may preferably comprise further components as additives.

[0174] These further additives may for example be selected from the following list:

[0175] 1. Antioxidants

[0176] 1.1. Alkylated monophenols, for example 2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-di-methylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol, 2,6-di-tert-butyl-4-isobutylphenol, 2,6-BASF SE 250175W001

[0177] dicyclopentyl-4-methylphenol, 2-(a-methylcyclohexyl)-4,6-dimethylphenol, 2,6-dioctadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol, 2,6-di-tert-butyl-4-methoxymethyl-phenol, nonylphenols which are linear or branched in the side chains, for example 2,6-di-nonyl-4-methylphenol, 2,4-dimethyl-6-(1 '-methylundec-1 yl)p henol , 2, 4-di methy l-6-( 1 '-methyl heptadec-1 '-yl) phenol , 2, 4-di methy I-6- (1 '-methyltridec- 1 '-yl) p henol, 2,4-dimethyl-6-(1 '-methyl-1 '-tetradecyl-methyl)-phenol and mixtures thereof.

[0178] 1.2. Alkylthiomethylphenols, for example 2,4-dioctylthiomethyl-6-tert-butylphenol, 2,4-dioctylthio-methyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ethylphenol, 2,6-di-dodecyl-thiomethyl-4-nonylphenol.

[0179] 1.3. Hydroquinones and alkylated hydroquinones, for example 2,6-di-tert-butyl-4-methoxyphenol, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,6-diphenyl-4-octadecyl-oxy-phenol, 2,6-di-tert-butylhydroquinone, 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.

[0180] 1.4. Tocopherols, for example a-tocopherol, p-tocopherol, y-tocopherol, 5-tocopherol and mixtures thereof (vitamin E), vitamin E acetate. Especially preferred is the addition of 2,5,7,8-tetramethyl-2-[4,8,12-trimethyltridecyl]-chroman-6-ol], which is a commercially available vitamin E (e.g. Irganox E 201™).

[0181] 1.5. Hydroxylated thiodiphenyl ethers, for example 2,2'-thiobis(6-tert-butyl-4-methylphenol), 2,2'-thiobis(4-octylphenol), 4,4'-thiobis(6-tert-butyl-3-methylphenol), 4,4'-thiobis(6-tert-butyl-2-methylphenol), 4,4'-thiobis(3,6-di-sec-amylphenol), 4,4'-bis(2,6-dimethyl-4-hydroxyphenyl)disulfide.

[0182] 1.6. Alkylidenebisphenols, for example 2,2'-methylenebis(6-tert-butyl-4-methylphenol), 2,2'-methylenebis(6-tert-butyl-4-ethylphenol), 2,2'-methylenebis[4-methyl-6-(a-methylcyclohexyl)phenol], 2,2'-methylenebis(4-methyl-6-cyclohexylphenol), 2,2'-methylenebis(6-nonyl-4-methylphenol), 2,2'-methylenebis(4,6-di-tert-butylphenol), 2,2'-ethylidenebis(4,6-di-tert-butylphenol), 2,2'-ethylidenebis(6-tert-butyl-4-isobutylphenol), 2,2'-methylenebis[6-(a-methylbenzyl)-4-nonylphenol], 2,2'-methylenebis[6-(a,a-dimethylbenzyl)-4-nonylphenol], 4,4'-methylenebis(2,6-di-tert-butylphenol), 4,4'-methylenebis(6-tert-butyl-2-methylphenol), 1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 2,6-bis(3-tert-butyl-5-methyl-2-hydroxybenzyl)-4-methylphenol, 1 ,1 ,3-tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 1 , 1 -bis(5-tert-butyl-4-hydroxy-2-methylphenyl)-3-n-dodecylmercaptobutane, 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, 2,2-bis(3,5-di-tert-butyl-4-hydroxyphenyl)propane, 2,2-bis-(5-tert-butyl-4-hydroxy-2-methylphenyl)-4-n-dodecylmercaptobutane, 1 ,1 , 5, 5-tetra(5-tert-butyl-4-hydroxy-2-methylphenyl)pentane.BASF SE 250175W001

[0183] 1.7. O-, N- and S-benzyl compounds, for example 3,5,3',5'-tetra-tert-butyl-4,4'-dihydroxydibenzyl ether, octadecyl-4-hydroxy-3,5-dimethylbenzylmercaptoacetate, tridecyl-4-hydroxy-3,5-di-tert-butylbenzyl-mercaptoacetate, tris(3,5-di-tert-butyl-4-hydroxybenzyl)amine, bis(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)dithioterephthalate, bis(3,5-di-tert-butyl-4-hydroxybenzyl)sulfide, isooctyl-3,5-di-tert-butyl-4-hydroxybenzylmercaptoacetate.

[0184] 1.8. Hydroxybenzylated malonates, for example dioctadecyl-2, 2-bis(3,5-di-tert-butyl-2-hydroxybenzyl)malonate, di-octadecyl-2-(3-tert-butyl-4-hydroxy-5-methylbenzyl)malonate, di-dodecy Imercaptoethy I-2, 2- bis(3, 5-di-tert-b uty I-4- hydroxybenzy l)malo n ate, bis [4- (1 ,1,3,3-tetramethylbutyl)phenyl]-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonate.

[0185] 1.9. Aromatic hydroxybenzyl compounds, for example 1 ,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1 ,4-bis(3,5-di-tert-butyl-4-hydroxybenzyl)-2,3,5,6-tetramethylbenzene, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)phenol.

[0186] 1.10. Additional Triazine compounds, for example 2,4-bis(octylmercapto)-6-(3,5-di-tert-butyl-4-hydroxy-anili no)- 1 , 3, 5-triazi ne, 2-octylmercapto-4, 6-bis(3, 5-di-tert-butyl-4-hydroxyanili no)- 1 , 3, 5-triazi ne, 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-triazi ne, 1 , 3, 5-tris(3, 5-di-tert-butyl-4-hydroxybenzyl)isocyan urate, 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.

[0187] 1.11. Benzylphosphonates, for example dimethyl-2,5-di-tert-butyl-4-hydroxybenzylphosphonate, diethyl-3, 5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl-3, 5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl-5-tert-butyl-4-hydroxy-3-methyl benzylphosphonate, the calcium salt of the monoethyl ester of 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid, (3,5-ditert-butyl-4-hydroxy-phenyl)methylphosphonic acid.

[0188] 1.12. Acylaminophenols, for example 4-hydroxylauranilide, 4-hydroxystearanilide, octyl N-(3,5-di-tert-butyl-4-hydroxyphenyl)carbamate.

[0189] 1.13. Esters of p-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid with mono- or polyhydric alcohols, for example with methanol, ethanol, n-octanol, i-octanol, a mixture of linear and branched Cz-Cg-alkanol, octadecanol, a mixture of linear and branched Ci3-Ci5-alkanol, 1 ,6-hexanediol, 1 ,9-nonanediol, ethyleneBASF SE 250175W001

[0190] glycol, 1 ,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis-(hydroxy-ethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

[0191] Preferred are esters of P-(3, 5-di-tert-butyl-4-hydroxyphenyl)propionic acid, especially with octadecanol, such as the addition of Octadecyl-3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionate, which is a commercially available as e.g. Irganox 1076™.

[0192] 1.14. Esters of p-(5-tert-butyl-4-hydroxy-3-methylphenyl)propionic acid with mono- or polyhydric alcohols, for example with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1 ,6-hexanediol, 1 ,9-nonanediol, ethylene glycol, 1 ,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane; 3,9-bis[2-{3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1 ,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane.

[0193] 1.15. Esters of p-(3,5-dicyclohexyl-4-hydroxyphenyl)propionic acid with mono- or polyhydric alcohols, for example with methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1 ,9-nonanediol, ethylene glycol, 1 ,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

[0194] 1.16. Esters of 3,5-di-tert-butyl-4-hydroxyphenyl acetic acid with mono- or polyhydric alcohols, for example with methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1 ,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

[0195] 1.17. Amides of p-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, for example N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylenediamide, N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)trimethylenediamide, N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)-hydrazide, N,N'-bis[2-(3-[3,5-di-tert-butyl-4-hydroxyphenyl]propionyloxy)ethyl]oxamide (Naugard XL-1 (RTM), supplied by SI Group).BASF SE 250175W001

[0196] 1.18. Ascorbic acid (vitamin C)

[0197] 1.19. Aminic antioxidants, for example N,N'-di-isopropyl-p-phenylenediamine, N,N'-di-sec-butyl-p-phenylenediamine, N,N'-bis(1 ,4-dimethylpentyl)-p-phenylenediamine, N,N'-bis(1-ethyl-3-methylpentyl)-p-phenylenediamine, N,N'-bis(1 -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-dimethylbutyl)-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, bis(4-methoxyphenyl)amine, 2,6-di-tert-butyl-4-dimethylaminomethylphenol, 2,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylmethane, N,N,N',N'-tetramethyl-4,4'-diaminodiphenylmethane, 1 ,2-bis[(2-methyl-phenyl)amino]ethane, 1 ,2-bis(phenylamino)propane, (o-tolyl) big uanide, bis[4-(1 ', 3'-dimethyl butyl)-phenyl]amine, tert-octylated N-phenyl-1 -naphthylamine, a mixture of mono- and dialkylated tert-butyl / tert-octyldiphenylamines, a mixture of mono- and dialkylated nonyldiphenylamines, a mixture of mono- and dialkylated dodecyldiphenylamines, a mixture of mono- and dialkylated isopropyl / isohexyldiphenylamines, a mixture of mono- and dialkylated tert-butyldiphenylamines, 2,3-dihydro-3,3-dimethyl-4H-1 ,4-benzothiazine, phenothiazine, a mixture of mono- and dialkylated tert-butyl / tert-octylphenothiazines or a mixture of mono-and dialkylated tert-octylphenothiazines, N-allylphenothiazine, N,N,N',N'-tetraphenyl-1 ,4-diaminobut-2-ene, N-[(1 ,1 ,3,3-tetramethylbutyl)phenyl]-1 -napthalenamine] (commercially available as Irganox L06™), 4,4’-bis(phenylisopropyl)diphenylamine (commercially available as Naugard 445), Bis(4-(1, 1,3,3-tetramethylbutyl)phenyl)amine (commercially available as Irganox 5057).

[0198] 2. Additional light stabilizers

[0199] 2.1. 2-Hydroxybenzophenones, for example the 4-hydroxy, 4-methoxy, 4-octyloxy, 4-decyloxy, 4-dodecyloxy, 4-benzyloxy, 4,2',4'-trihydroxy and 2'-hydroxy-4,4'-dimethoxy derivatives.

[0200] 2.2. Esters of substituted and unsubstituted benzoic acids, for example 4-tert-butylphenyl salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoyl resorcinol, bis(4-tert-butyl benzoyl)resorcinol, benzoyl resorcinol, 2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate, hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, octadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, 2-methyl-4,6-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate.BASF SE 250175W001

[0201] 2.3. Acrylates, for example ethyl a-cyano-np,|3-diphenylacrylate, isooctyl a-cyano-np,|3-diphenylacrylate, methyl a-carbomethoxycinnamate, methyl a-cyano-p-methyl-p-methoxycinnamate, butyl a-cyano-p-methyl-p-methoxycinnamate, methyl a-carbomethoxy-p-methoxycinnamate, N-(P-carbomethoxy-[3-cyanovinyl)-2-methylindoline and neopentyl tetra(a-cyano-,|3-diphenylacrylate), or sterically hindered acrylates such as disclosed in EP-A-3587425, like for instance (2E,2'E)-2,4,8,10-tetraoxaspiro[5.5]undecane-3,9-diylbis(2-methylpropane-2,1-diyl) bis(2-cyano-3-(3,4-dimethoxyphenyl)acrylate) [CAS Reg. No. 2233585-18-5], or a similar derivative, wherein the one of the two OCH3 groups (methoxy) of each of the (2-cyano-3-(3,4-dimethoxyphenyl)acrylate)moiety is respectively substituted with a OC6H13 group, resulting in a bis(2-cyano-3-(3-methoxy-4-hexyloxyphenyl)acrylate) derivative.

[0202] 2.4. Nickel compounds, for example nickel complexes of 2,2'-thiobis[4-(1 , 1 ,3,3-tetramethylbutyl)phenol], such as the 1:1 or 1 :2 complex, with or without additional ligands such as n-butylamine, triethanolamine or N-cyclohexyldiethanolamine, nickel dibutyldithiocarbamate, nickel salts of the monoalkyl esters, e.g. the methyl or ethyl ester, of 4-hydroxy-3,5-di-tert-butylbenzylphosphonic acid, nickel complexes of ketoximes, e.g. of 2-hydroxy-4-methylphenylundecylketoxime, nickel complexes of 1-phenyl-4-lauroyl-5-hydroxypyrazole, with or without additional ligands.

[0203] 2.5. Oxamides, 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, mixtures of 0- and p-methoxy-disubstituted oxanilides and mixtures of 0- and p-ethoxy-disubstituted oxanilides.

[0204] 2.6. Sterically hindered amines, for example bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate, bis(2, 2,6,6-tetramethyl-4-piperidyl)succi nate, bis(1 , 2, 2, 6, 6-pentamethyl-4-piperidyl)sebacate, bis(1 , 2, 2,6,6-pentamethyl-4-piperidyl) n-butyl-3,5-di-tert-butyl-4-hydroxybenzylmalonate, the condensate of 1-(2-hydroxyethyl)-2, 2, 6, 6-tetramethyl-4-hydroxypiperidi ne and succinic acid, linear or cyclic condensates of N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and 4-tert-octylamino-2,6-dichloro-1 ,3,5-triazine, tris(2,2,6,6-tetramethyl-4-piperidyl)nitrilotriacetate, tetrakis(2, 2,6, 6-tetramethyl-4-piperidyl)-1 , 2,3,4-butanetetracarboxylate, 1 ,1 '-(1 , 2-ethanediyl)-bis(3, 3, 5, 5-tetramethylpiperazi none), 4-benzoyl-2, 2,6,6-tetramethylpiperidine, 4-stearyloxy-2,2,6,6-tetramethylpiperidine, bis(1, 2,2,6, 6-pentamethylpiperidyl)-2-n-butyl-2-(2-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-tetramethylpiperid-4-yl)sebacate, bis(1-octyloxy-2, 2,6,6-tetramethylpiperid-4-yl)succi nate, bis-[2,2,6,6-tetramethyl-1-(undecyloxy)-piperidin-4-yl] carbonate, linear orBASF SE 250175W001

[0205] cyclic condensates of N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)-hexamethylenediamine and 4-morpholino- 2.6-dichloro-1 ,3,5-triazine, the condensate 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, the condensate of 2-chloro-4,6-di-(4-n-butylamino- 1.2.2.6.6-pentamethylpiperidyl)-1 ,3,5-triazine and 1 ,2-bis(3-aminopropyl-amino)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, a mixture of 4-hexadecyloxy- and 4-stearyloxy-2,2,6,6-tetramethylpiperidine, a condensate of N, N'-bis(2, 2,6,6-tetramethyl-4-piperidyl)hexamethylenediami ne and 4-cyclohexylami no-2, 6-dichloro- 1 ,3,5-triazine, a condensate of 1,2-bis(3-aminopropylamino)ethane and 2,4,6-trichloro-1 ,3,5-triazine as well as 4-butylamino- 2.2.6.6-tetramethylpiperidine (CAS Reg. No. [136504-96-6]); a condensate of 1,6-hexanediamine and 2,4,6-trichloro-1 ,3,5-triazine as well as N,N-dibutylamine and 4-butylamino-2,2,6,6-tetramethylpiperidine (CAS Reg. No. [192268 64-7]); reaction products of N6,N6'-hexane-1,6-diylbis[N2,N4-dibutyl-N2,N4,N6-tris(2,2,6,6-tetramethylpiperidin-4-yl)-1 ,3,5-triazine-2,4,6-triamine], butanal and hydrogen peroxide; 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-oxo-spiro-[4,5]decane, a 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)hexamethylenediamine, a diester of 4-methoxymethylenemalonic acid with 1 ,2,2,6,6-pentamethyl-4-hydroxy-piperidine, poly[methylpropyl-3-oxy-4-(2,2,6,6-tetramethyl-4-piperidyl)]siloxane, a reaction product of maleic acid anhydride-a-olefin copolymer with 2,2,6,6-tetramethyl-4-aminopiperidine or 1 ,2,2,6,6-pentamethyl-4-aminopiperidine, a mixture of oligomeric compounds which are the formal condensation products of N,N’-bis-(2,2,6,6-tetramethyl-1-propoxy-piperidin-4-yl)-hexane-1 ,6-diamine and 2,4-dichloro-6-{n-butyl-(2,2,6,6-tetramethyl-1 -propoxy-piperidin-4-yl)-amino}-[1 ,3,5]triazine endcapped with 2-chloro-4,6-bis-(di-n-butylamino)-[1,3,5]triazine, a mixture of oligomeric compounds which are the formal condensation products of N,N’-bis-(2,2,6,6-tetramethyl-piperidin-4-yl)-hexane-1 ,6-diamine and 2,4-dichloro-6-{n-butyl-(2, 2, 6, 6-tetramethyl-piperidi n-4-yl)-ami no}-[1 , 3, 5]triazi ne end-capped with 2-chloro- 4.6-bis-(di-n-butylamino)-[1 ,3,5]triazine, (N2,N4-dibutyl-N2,N4-bis(1, 2,2,6, 6-pentamethyl-4-piperidinyl)-6-(1 -pyrrolidinyl)-[1 ,3,5]-triazine-2,4-diamine, 2,4-bis[N-(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidine-4-yl)-N-butylamino]-6-(2-hydroxyethyl)amino-1 ,3,5-triazine, 1-(2-hydroxy-2-methylpropoxy)-4-octa-decanoyloxy- 2.2.6.6-tetramethylpiperidine, 5-(2-ethylhexanoyl)oxymethyl-3,3,5-trimethyl-2-morpholinone, Sanduvor (Clariant; CAS Reg. No. [106917-31-1]), 5-(2-ethylhexanoyl)-oxymethyl-3,3,5-trimethyl-2-morpholinone, the reaction product of 2,4-bis-[(1-cyclo-hexyloxy-2,2,6,6-piperidine-4-yl)butylamino]-6-chloro-s-triazine with N,N’-bis-(3-amino-propyl)ethylenediamine), 1 ,3,5-tris(N-cyclohexyl-N-(2,2,6,6-tetramethyl-piperazine-3-one-BASF SE 250175W001

[0206] 4-yl)amino)-s-triazine, 1 ,3,5-tris(N-cyclohexyl-N-(1 , 2,2,6, 6-pentamethylpiperazine-3-one-4-yl)-amino)-s-triazine.

[0207] 2.7. 2-(2'-Hydroxyphenyl)benzotriazoles, for example 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(5'-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(2'-hydroxy-5'-( 1 , 1 , 3, 3-tetramethy I butyl) p henyl) benzotri azole, 2-(3', 5'-d i-tert- b uty l-2'-hyd roxy p he nyl)-5-chlorobenzotriazole, 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-(3',5'-di-tert-amyl-2'-hydroxyphenyl)benzotriazole, 2-(3',5'-bis(a, a-dimethylbenzyl)-2'-hydroxyphenyl)benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonylethyl)phenyl)-5-chlorobenzotriazole, 2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)carbonylethyl]-2'-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl)-5-chlorobenzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonyl-ethyl)phenyl)benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonylethyl)phenyl)benzotriazole, 2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)carbonylethyl]-2'-hydroxyphenyl)benzotriazole, 2-(3'-dodecyl-2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-isooctyloxycarbonylethyl) phenylbenzotriazole, 2, 2'-methy lene bis [4-( 1 , 1 , 3, 3-tetramethyl b uty l)-6- be nzotri azole-2-ylp henol] ; the transesterification product of 2-[3'-tert-butyl-5'-(2-methoxycarbonylethyl)-2'-hydroxyphenyl]-2H-benzotriazole with polyethylene glycol 300; [R’-CH2-CH2-CO-O-CH2-CH2-]2, where R’ = 3'-tert-butyl-4'-hydroxy-5'-2H-benzotriazol-2-ylphenyl.

[0208] 2.8. Additional 2-(2-Hydroxyphenyl)-1 ,3,5-triazines, for example 2,4,6-tris(2-hydroxy-4-octyloxyphenyl)- 1.3.5-triazi ne, 2-(2-hydroxy-4-octyloxyphenyl)-4, 6-bis(2, 4-dimethylp henyl)- 1 , 3, 5-triazi ne, 2-(2,4-dihydroxyphenyl)-4,6-bis(2,4-dimethyl-phenyl)-1 ,3,5-triazine, 2,4-bis(2-hydroxy-4-propyloxyphenyl)-6-(2,4-dimethylp henyl)- 1 ,3,5-triazine, 2-(2-hydroxy-4-octyloxyp henyl)-4, 6-bis(4-methylp henyl)- 1 ,3,5-triazine, 2-(2-hydroxy-4-dodecyloxyphenyl)-4,6-bis(2,4-dimethyl-phenyl)-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-octyloxypropyl-oxy)phenyl]-4,6-bis(2,4-dimethyl)-1 ,3,5-triazine, 2-[4-(dodecyloxy / tridecyloxy-2-hydroxypropoxy)-2-hydroxy-phenyl]-4,6-bis(2,4-dimethylphenyl)-1 ,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-dodecyloxypropoxy)phenyl]-4,6-bis-(2,4-dimethylp henyl)- 1 ,3,5-triazine, 2-(2-hydroxy-4-hexyloxy)p henyl-4, 6-diphenyl- 1 ,3,5-triazine, 2-(2-hydroxy-4-methoxy-phenyl)-4,6-diphenyl-1 ,3,5-triazine, 2,4,6-tris[2-hydroxy-4-(3-butoxy-2-hydroxypropoxy)phenyl]- 1.3.5-triazine, 2-(2-hydroxyphenyl)-4-(4-methoxyphenyl)-6-phenyl-1 ,3,5-triazine, 2-[4,6-bis({[1 ,1 -biphenyl]-4-yl})-1,3,5-triazin-2-yl]-5-[(2-ethylhexyl)oxy]phenol (CAS Number: 204583-39-1), 2-{2-hydroxy-4-[3-(2-ethylhexyl-1-oxy)-2-hydroxy-propyloxy]phenyl}-4,6-bis(2,4-dimethylphenyl)-1 ,3,5-triazine.BASF SE 250175W001

[0209] 3. Metal deactivators, for example N,N'-diphenyloxamide, N-salicylal-N'-salicyloyl hydrazine, N,N'-bis(salicyloyl)hydrazine, N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hydrazine, 3-salicyloylamino-1 ,2,4-triazole, bis(benzylidene)oxalyl dihydrazide, oxanilide, isophthaloyl dihydrazide, sebacoyl bisphenylhydrazide, N,N'-diacetyladipoyl dihydrazide, N,N'-bis(salicyloyl)oxalyl dihydrazide, N,N'-bis(salicyloyl)thiopropionyl dihydrazide.

[0210] 4. Phosphites and phosphonates such as Tris-alkyl (C12-C15) phosphite, Triisodecyl phosphite, Triisotridecyl phosphite, Dioleyl Hydrogen phosphite, Triisooctyl Phosphite, Heptakis (dipropyleneglycol) Triphosphite, Trilauryl Trithio Phosphite, Tris (Dipropyleneglycol) Phosphite, Dimethyl hydrogen phosphite, Dibutyl hydrogen phosphite, Dilauryl hydrogen phosphite, Tri-Ci2-Ci4-phosphite or Bis(2-ethyl hexyl) hydrogen phosphite. Other phosphites and phosphonates, which are for instance liquid ones such as Di-n-octyl hydrogen phosphite or Di-iso-octyl hydrogen phosphite, or for example triphenyl phosphite, tris(nonylphenyl) phosphite, Phenyldiisodecyl phosphite, Diphenylisodecyl phosphite, [Triphenyl phosphite, polymer with 1,4-cyclohexanedimethanol and polypropylene glycol, Cio- alkyl esters (CAS Reg. No. 1821217-71-3)].

[0211] Further optional phosphites or phosphonates additives are for instance Alkyl (C12-C15) bisphenol A phosphite, Alkyl (C10) bisphenol A phosphite, Poly (dipropyleneglycol) phenyl phosphite, Tris (tridecyl) phosphite, Diphenyl phosphite, Dodecyl nonylphenol phosphite blend, Phenyl Neopentylene Glycol Phosphite, Poly 4,4' Isopropylidenediphenol - C10 Alcohol Phosphite, Poly 4,4' Isopropylidenediphenol - C12 isAlcohol Phosphite, diphenylalkyl phosphites, phenyldialkyl phosphites, Ci2-Cisalkyl bis[4-(1-methyl-1-phenyl-ethyl)phenyl] phosphite, Ci2-Cisalkenyl bis[4-(1-methyl-1-phenyl-ethyl)phenyl] phosphite, bis[4-(1 -methyl-1 -phenyl-ethyl)phenyl] [(E)-octadec-9-enyl] phosphite, decyl bis[4-(1 -methyl-1 -phenyl-ethyl)phenyl] phosphite, didecyl [4-( 1 -methyl-1 -p henyl-ethyl) p heny I] phosphite, [4-( 1 -methyl-1 -p henyl-ethyl) p heny I] bis[(E)-octadec-9-e nyl] phosphite, trilauryl phosphite, trioctadecyl phosphite, distearylpentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl) phosphite, diisodecyl pentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, bis(2,4-di-cumylphenyl)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, [2-tert-butyl-4-[1-[5-tert-butyl-4-di(tridecoxy)phosphanyloxy-2-methyl-phenyl]butyl]-5-methyl-phenyl] ditridecyl phosphite, tristearyl sorbitol triphosphite, a mixture of at least two different tris(mono-Ci-C8-alkyl)phenyl phosphites such as for example mentioned in US 7468410 B2 as products of examples 1 and 2, a mixture of phosphites comprising at least two different tris(amylphenyl) phosphites such as for example mentioned in US 8008383 B2 as mixtures 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 and 26, a mixture of a least four different phosphites comprising tris[4-(1 ,1 -dimethylpropyl)phenyl] phosphite, [2,4-bis(1,1-dimethyl-propyl)phenyl] bis[4-(1 ,1-dimethylpropyl)phenyl] phosphite, bis[2,4-bis(1 , 1 -dimethylpropyl)phenyl] [4-(1,1-BASF SE 250175W001

[0212] dimethylpropyl)phenyl] phosphite and tris[2,4-bis(1,1-dimethylpropyl)phenyl] phosphite, a mixture of phosphites comprising at least two different tris(butylphenyl) phosphites such as for example mentioned in US 8008383 B2 as mixtures 34, 35, 36, 37, 38, 39 and 40, an oxyalkylene-bridged bis-(di-Ce-aryl) diphosphite or an oligomeric phosphite obtainable by condensation under removal of hydrogen chloride of (i) a trichlorophosphane, with (ii) a dihydroxyalkane interrupted by one or more oxygen atoms and with (iii) a mono-hydroxy-Ce-arene such as for example mentioned in US 8304477 B2 as products of examples 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 and 17, a polymeric phosphite obtainable by transesterification under removal of phenol of (i) triphenyl phosphite with (ii) a dihydroxyalkane optionally interrupted by one or more oxygen atoms and / or a bis(hydroxyalkyl)(alkyl)amine and with (iii) a mono-hydroxyalkane optionally interrupted by one or more oxygen atoms such as for example mentioned in US 8563637 B2 as products of examples 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11, tetrakis(2,4-di-tert-butylphenyl) 4,4'-biphenylene diphosphonite, 6-isooctyloxy-2,4,8,10-tetra-tert-butyl-12H-dibenz[d,g]-1 ,3,2-dioxaphosphocine, bis(2,4-di-tert-butyl-6-methylphenyl)methylbis(2,4-di-tert-butyl-6-methylphenyl)methyl phosphite, bis(2,4-di-tert-butyl-6-methylp henyl)ethyl phosphite, 6-fl uoro-2,4, 8, 10-tetra-tert-butyl- 12-methyl-di benz[d, g]- 1 ,3,2-dioxaphosphocine, 1 ,3,7,9-tetra-tert-butyl-11 -octoxy-5H-benzo[d][1 ,3,2]benzodioxaphosphocine, 2, 2', 2"-nitrilo[triethyltris(3,3',5,5'-tetra-tert-butyl-1 ,1 '-biphenyl-2,2'-diyl)phosphite], phosphorous acid, triphenyl ester, polymer with a-hydro-w-hydroxypoly[oxy(methyl-1 ,2-ethanediyl)], C10-16-alkyl esters (CAS Reg. No.

[0213] [1227937-46-3]), 2-ethylhexyl(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl)phosphite, 5-butyl-5-ethyl-2-(2,4,6-tri-tert-butylphenoxy)-1 ,3,2-dioxaphosphirane, phosphorous acid, mixed 2,4-bis(1,1-dimethylpropyl)phenyl and 4-(1 ,1 -dimethylpropyl)phenyl triesters (CAS Reg. No. [939402-02-5]).

[0214] The following phosphites are especially preferred:

[0215] Tris(2,4-di-tert-butylphenyl) phosphite (lrgafos®168, Ciba Specialty Chemicals Inc.), tris(nonylphenyl) phosphite,

[0216]

[0217] BASF SE 250175W001

[0218]

[0219] 5. Hydroxylamines and amine N-oxides, for example N,N-dibenzylhydroxylamine, N,N-diethylhydroxylamine, N,N-dioctylhydroxylamine, N,N-dilaurylhydroxylamine, N,N-ditetradecylhydroxylamine, N,N-dihexadecylhydroxylamine, N,N-dioctadecylhydroxylamine, N-hexadecyl-N-octadecylhydroxylamine, N-heptadecyl-N-octadecylhydroxylamine, N, N-dialkylhydroxylamine derived from hydrogenated tallow amine , N,N-bis-(hydrogenated rape-oil alkyl)-N-methyl-amine N-oxide or trialkylamine N-oxide.

[0220] 6. Nitrones, for example N-benzyl-alpha-phenylnitrone, N-ethyl-alpha-methylnitrone, N-octyl-alpha-heptylnitrone, N-lauryl-alpha-undecylnitrone, N-tetradecyl-alpha-tridecylnitrone, N-hexadecyl-alpha-pentadecylnitrone, N-octadecyl-alpha-heptadecylnitrone, N-hexadecyl-alpha-heptadecylnitrone, N-octadecyl-alpha-pentadecylnitrone, N-heptadecyl-alpha-heptadecylnitrone, N-octadecyl-alpha-hexadecyl nitrone, nitrone derived from N, N-dialkylhydroxylamine derived from hydrogenated tallow amine.BASF SE 250175W001

[0221] 7. Thiosynergists, for example dilauryl thiodipropionate, dimistryl thiodipropionate, distearyl thiodipropionate and pentaerythritol tetrakis-[3-(n-lauryl)-propionic acid ester].

[0222] 8. Peroxide scavengers, for example esters of a-thiodi prop ionic acid, for example the lauryl, stearyl, myristyl or tridecyl esters, mercaptobenzimidazole or the zinc salt of 2-mercaptobenzimidazole, zinc dibutyldithiocarbamate, dioctadecyl disulfide, pentaerythritol tetrakis(P-dodecylmercapto)propionate.

[0223] 9. Acid scavengers, for example melamine, polyvinylpyrrolidone, dicyandiamide, triallyl cyanurate, urea derivatives, hydrazine derivatives, alkali metal salts and alkaline earth metal salts of higher fatty acids, for example calcium stearate, zinc stearate, magnesium behenate, magnesium stearate, sodium ricinoleate and potassium palmitate, antimony pyrocatecholate and zinc pyrocatecholate.

[0224] 10. Basic co-stabilizers, for example melamine, polyvinylpyrrolidone, dicyandiamide, triallyl cyanurate, urea derivatives, hydrazine derivatives, amines, polyamides, polyurethanes, alkali metal salts and alkaline earth metal salts of higher fatty acids, for example calcium stearate, zinc stearate, magnesium behenate, magnesium stearate, sodium ricinoleate and potassium palmitate, antimony pyrocatecholate or zinc pyrocatecholate.

[0225] 11. Nucleating agents, for example inorganic substances, such as talcum, metal oxides, such as titanium dioxide or magnesium oxide, phosphates, carbonates or sulfates of, preferably, alkaline earth metals; organic compounds, such as mono- or polycarboxylic acids and the salts thereof, e.g. 4-tert-butylbenzoic acid, adipic acid, diphenylacetic acid, sodium succinate or sodium benzoate; polymeric compounds, such as ionic copolymers (ionomers). Especially preferred are 1 ,3:2,4-bis(3’,4’-dimethylbenzylidene)sorbitol, 1, 3:2,4-di(paramethyldibenzylidene)sorbitol, and 1,3:2,4-di(benzylidene)sorbitol.

[0226] 12. Fillers and reinforcing agents, for example calcium carbonate, silicates, glass fibres, glass beads, asbestos, talc, kaolin, mica, barium sulfate, metal oxides and hydroxides, carbon black, graphite, wood flour and flours or fibers of other natural products, synthetic fibers.

[0227] 13. Other additives, for example lubricants, emulsifiers, pigments, rheology additives, catalysts, flow-control agents, optical brighteners, flameproofing agents, antistatic agents and blowing agents.

[0228] 14. Benzofuranones and indolinones, for example those disclosed in US-A-4,325, 863; US A-4,338,244; USA-5,175,312; US-A-5, 216,052; US-A-5,252,643; DE-A-4316611 ; DE-A-4316622; DE-A-4316876; EP-A-0589839 or EP-A-0591102, or 5,7-di-tert-butyl-3-(4-hydroxyphenyl)-3H-benzofuran-2-one, 5,7-di-tert-butyl-3-[4-(2-hydroxyethoxy)phenyl]-3H-benzofuran-2-one, 5,7-di-tert-butyl-3-[4-[2-[2-[2-[2-(2-hydroxyethoxy) ethoxy]ethoxy]ethoxy]ethoxy]phenyl]-3H-benzofuran-2-one, 3-[4-(2-acetoxyethoxy)phenyl]-5,7-di-tert-BASF SE 250175W001

[0229] butylbenzofuran-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-butylbenzofuran-2-one, 3-(3,5-dimethyl-4-pivaloyloxy-phenyl)-5,7-di-tert-butylbenzofuran-2-one, 3-(3,4-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one, 3-(2,3-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one, 3-(2-acetoxy-4-(1 ,1 ,3,3-tetramethyl-butyl)-phenyl)-5-(1 , 1 , 3, 3-tetramethy I- b utyl)- be nzofu ran-2-one, [6-[6-[6-[2-[4-(5, 7-di-tert- butyl-2-oxo-3H-be n zofuran-3-yl)phenoxy]ethoxy]-6-oxo-hexoxy]-6-oxo-hexoxy]-6-oxo-hexyl] 6-hydroxyhexanoate, [4-tert-butyl-2-(5-tert-butyl-2-oxo-3H-benzofuran-3-yl)phenyl] benzoate, [4-tert-butyl-2-(5-tert-butyl-2-oxo-3H-benzofuran-3-yl)phenyl] 3,5-di-tert-butyl-4-hydroxy-benzoate and [4-tert-butyl-2-(5-tert-butyl-2-oxo-3H-benzofuran-3-yl)phenyl] 3-(3,5-di-tert-butyl-4-hydroxy-phenyl)propanoate.

[0230] 15. Flame retardants

[0231] 15.1. Phosphorus containing flame retardants including reactive phosphorous containing flame retardants, for example tetraphenyl resorcinol diphosphite (Fyrolflex RDP, RTM, Akzo Nobel), tetrakis(hydroxymethyl)-phosphonium sulphide, triphenyl phosphate, diethyl-N,N-bis(2-hydroxyethyl)-aminomethyl phosphonate, hydroxyalkyl esters of phosphorus acids, alkylphosphate oligomers, ammonium polyphosphate (APP), resorcinol diphosphate oligomer (RDP), phosphazene flame retardants or ethylenediamine diphosphate (EDAP).

[0232] 15.2. Nitrogen containing flame retardants, for example melamine-based flame retardants, isocyanurates, polyisocyanurate, esters of isocyanuric acid, like tris-(2-hydroxyethyl)isocyanurate, tris(hydroxymethyl)isocyanurate, tris(3-hydroxy-n-propyl)isocyanurate, triglycidyl isocyanurate, melamine cyanurate, melamine borate, melamine phosphate, melamine pyrophosphate, melamine polyphosphate, melamine ammonium polyphosphate, melamine ammonium pyrophosphate, dimelamine phosphate, dimelamine pyrophosphate, benzoguanamine, allantoin, glycol uril, urea cyanurate, a condensation product of melamine from the series melem, melam, melon and / or a higher condensed compound or a reaction product of melamine with phosphoric acid or a mixture thereof.

[0233] 15.3. Organohalogen flame retardants, for example polybrominated diphenyl oxide, decabromodiphenyl oxide (DBDPO), tris[3-bromo-2,2-bis(bromomethyl)propyl] phosphate (PB 370, (RTM, FMC Corp.)), tris(2, 3-dibromopropyl)phosphate, chloroalkyl phosphate esters such as tris(chloropropyl)phosphate, tris(2,3-dichloropropyl)phosphate, tris(1,3-dichloro-2-propyl)phosphate (Fyrol FR 2 (RTM ICL)), oligomeric chloroalkyl phosphate, chlorendic acid, tetrachlorophthalic acid, tetrabromophthalic acid, poly-p-chloroethylBASF SE 250175W001

[0234] triphosphonate mixture, tetrabromobisphenol A-bis(2,3-dibromopropyl ether) (PE68), brominated epoxy resin, brominated aryl esters, ethylene-bis(tetrabromophthalimide) (Saytex BT-93 (RTM, Albemarle)), bis(hexachlorocyclopentadieno) cyclooctane (Declorane Plus (RTM, Oxychem)), chlorinated paraffins, octabromodiphenyl ether, hexachlorocyclopentadiene derivatives, 1,2-bis(tribromophenoxy)ethane (FF680), tetrabromobisphenol A (Saytex RB100 (RTM, Albemarle)), ethylene bis-(dibromonorbornanedicarboximide) (Saytex BN-451 (RTM, Albemarle)), bis-(hexachlorocycloentadeno)cyclooctane, PTFE, tris (2,3-dibromopropyl) isocyanurate or ethylene-bis-tetrabromophthalimide.

[0235] Some of the halogenated flame retardants mentioned above are routinely combined with an inorganic oxide synergist. Some of the halogentated flame retardants mentioned above can be used in combination with triaryl phosphates (such as the propylated, butylated triphenyl phosphates) and the like and / or with oligomeric aryl phosphates (such as resorcinol bis(diphenyl phosphate), bisphenol A bisfdiphenyl phosphate), neopentylglycol bis(diphenyl phosphate)) and the like.

[0236] 15.4. Inorganic flame retardants, for example aluminium trihydroxide (ATH), boehmite (AIOOH), magnesium dihydroxide (MDH), zinc borates, CaCOs, organically modified layered silicates, organically modified layered double hydroxides, and mixtures thereof. In regard to the synergistic combination with halogenated flame retardants, the most common inorganic oxide synergists are zinc oxides, antimony oxides like Sb20s or Sb20s or boron compounds.

[0237] The object was also solved by a laminated glass comprising the interlayer film.

[0238] Typically, laminated glass, also called laminated pane, comprises besides the interlayer film at least a first pane and a second pane. The interlayer film is arranged between these two panes to form the laminated pane. The panes are preferably mineral glass panes but can also be panes made of plastic.

[0239] The laminated glass can be used as museum glazing, shop window glazing, motor vehicle glazing, aircraft glazing, in photovoltaic modules in LED or OLED screens, televisions, computer screens, large screens, in electrochromic, photochromic, or photoelectrochromic glass elements. Especially such electronic elements in laminated panes are prone to high energetic UV radiation, making an effective UV absorption measure an indispensable part of the laminated pane.

[0240] The lamination step for producing the laminated glass can be carried out such that the interlayer film is positioned between two glass sheets and the layered body thus prepared is pressed under increased orBASF SE 250175W001

[0241] reduced pressure and increased temperature to form a laminate. To laminate the layered body, the methods can be used with and without prior production of a pre-laminate.

[0242] A so called "autoclave processes" may be carried out at an increased pressure from approximately 10 bar to 15 bar and temperatures from 100 °C to 150 °C during approximately 2 hours.

[0243] Vacuum laminators may also be used and these consist of a chamber that can be heated and evacuated, in which laminated glass can be laminated within 30 minutes - 60 minutes. Reduced pressures from 0.01 mbar to 300 mbar and temperatures from 100 °C to 200 °C, in particular 130 °C - 160 °C, are suitable.

[0244] Optionally, the glass film laminate may then be subjected to an autoclave process.

[0245] The object was also solved by a use of the resorcinol triazine mixture of formulas (I) and (II) as a UV absorber in an interlayer film for laminated glass.

[0246] All embodiments and forms of the invention described herein can be combined with each other unless they are clearly indicated as alternatives or are clearly contradictory. For example, all preferred structural modifications to the resorcinol triazines are combinable with preferred weight ratios of the two resorcinol triazine, with preferred embodiments of the benzotriazole-based UV absorber, weight ratio of the resorcinol triazine mixture to the benzotriazole-based UV absorber and / or the preferred embodiments of the plasticizer. All preferred embodiments and forms of the interlayer apply equally to the inventive laminated glass and vice versa. Additionally, all preferred embodiments and forms of the resorcinol triazine mixture according to the invention apply to its inventive use for stabilizing the interlayer film for laminated glass.BASF SE 250175W001

[0247] Examples

[0248] List of abbreviations

[0249] HALS-1 a hindered amine light stabilizer, N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)-N,N'- diformylhexamethylenediamine, commercially available as Uvinul® 4050 from BASF SE AO-1 a sterically hindered phenolic antioxidant, benzenepropanoic acid, 3-(1 , 1 - dimethylethyl)-4-hydroxy-5-methyl-, 1 ,1 '-[1 ,2-ethanediylbis(oxy-2,1 -ethanediyl)] ester, commercially available as Irganox® 245 from BASF SE

[0250] Plasticizer A Trifethylene glycol)-bis(2-ethyl hexanoate), CAS-Nummer: 94-28-0, commercially available from Carbosynth Limited

[0251] PVB-1 Polyvinyl butyrate, commercially available as Mowital® BA20 from Kuraray, hydroxyl content 20.8-26.6 mol%, glass transition Tg84 °C

[0252] MEB Magnesium 2-ethylbutyrate, commercially available from TCI

[0253] UVA-1 2-(5-Chloro-2H-benzotriazol-2-yl)-6-(1 ,1 -dimethylethyl)-4-methyl, commercially available as Tinuvin® 326 from BASF

[0254] UVA-2 Octyl 2-[4-[4, 6-bis(4-p henylp henyl)-1 , 3, 5-triazi n-2-yl]-3-hydroxy-p henoxy]propanoate, commercially available as Tinuvin® 479 from BASF

[0255] UVA-3 iso-Octyl 2-[4-[4,6-bis[2-hydroxy-4-(1-methyl-2-octoxy-2-oxo-ethoxy)phenyl]-1 ,3,5- triazin-2-yl]-3-hydroxy-phenoxy]propanoate (80 wt.% relative to the weight of the total composition of UVA-3) and 2-methoxy-1-propyl-acetate as a solvent (20 wt.% relative to the weight of the total composition of UVA-3), commercially available from BASF (see also formula (II”))

[0256] UVA-4 5-Butoxy-2-[4-(4-butoxy-2-hydroxy-phenyl)-6-(2,4-dibutoxyphenyl)-1,3,5-triazin-2- yl]phenol, commercially available as Tinuvin® 460 from BASF (see also formula (I’))

[0257] Film preparation

[0258] Polyvinyl butyrate (PVB-1) films of the compositions stated in Table 1 were prepared by mixing PVB-1 (Mowital® BA20 from Kuraray, hydroxyl content 20.8-26.6 mol%, glass transition Tg 84 °C), trifethylene glycol)-bis(2-ethylhexanoate) (“Plasticizer A”) and all other components listed in Table 1 in a plastic bag and melt blending the mixtures on a single screw extruder at 135 °C. The extruded strands were passed through a water bath and pelletized. The pellets were then dried at 30 °C in a vacuum oven for 24 h. Films of 0.8 mm thickness were prepared from the dried pellets via compression molding at 90 °C. The films were then laminated between quartz glass plates by placing the glass / PVB-film / glass laminates under load in a vacuum oven at 80°C for 1 hour using 0.8 mm distance holders, and the laminates were framed with an aluminumBASF SE 250175W001

[0259] film. The composition details are listed in Table 1. The examples “Comp. Ex. A to F” are comparative examples and not subject of the invention. The example 1 (“Ex. 1” in Table 1) is an example according to the invention.

[0260] Table 1

[0261]

[0262] All components listed in Table 1 are given in percentage by weight (wt.%) relative to the weight of the total composition.

[0263] UV exposure

[0264] The PVB films according to the comp. ex. A to E and inventive ex. 1 are each laminated between two quartz glass panes to form a laminated pane (see film preparation). After the lamination, accelerated UV aging was performed by placing the laminated panes in an Atlas Ci4000 xenon arc Weather-Ometer. UV exposure of the samples was done for 2000 h according to ISO 4892-2:2006-06 using the conditions of Method A, Cycle no. 1, but without water spray.

[0265] Characterization

[0266] UV spectra of the laminated panes before and after UV exposure were recorded using a Shimadzu UV3600i spectrophotometer. The total transmission rate %Tuv(400) in the wavelength range of 300-400 nm weighted by the intensity of the solar spectrum was calculated according to ISO 13837 Conv. A. The Yellowness Index (Yl) of the laminated panes was determined according to ASTM E313. The Yellowness Index is a unitless number derived from spectrophotometric data that indicates the shift in color of a test sample from clear or white to yellow. The results are summarized in Table 2. The UV transmission rate before UV exposureBASF SE 250175W001

[0267] (%Tuv(400) Jnitial) and after UV exposure (%Tuv(400)_after) are each given in percent (%). The difference of %Tuv(400)_after and %Tuv(400) Jnitial is referred to as Delta %Tuv(400) and is also given in percent (%). The Yellowness Index before the UV exposure is referred to as Yl Jnitial and after the UV exposure it is referred to as YLafter. The difference of YLafter and Yl Jnitial is referred to as Delta Yl.

[0268] Table 2

[0269]

[0270] Use of single UV absorbers UVA-2 and UVA-4 results in rather weak UV absorption compared to reference UV absorber UVA-1 of Comp. Ex. A, as expressed by the comparatively high values for %Tuv(400) Jnitial and %Tuv(400)_after in Comp. Ex. B, D, and E. On the other hand, UV absorber UVA-3 (Comp. Ex. C) can provide relatively low %Tuv(400) Jnitial but results in strong yellowing, as can be deducted from the high values for Yl Jnitial and YLafter. However, inventive Ex. 1, containing a blend of UVA-3 and UVA-4, shows a lower %Tuv(400) Jnitial and lower %Tuv(400)_after compared to Comp. Ex. E where UVA-4 is solely employed at the loading. At the same time, Ex. 1 shows improved initial color (Yl Jnitial) and only slightly less color retention (higher Delta Yl) compared to the same Comp. Ex. E. On the other side, Ex. 1 has a comparable %Tuv(400) Jnitial and only a marginally higher %Tuv(400)_after in comparison with Comp. Ex. C, where UVA-3 is solely employed. Nevertheless, Ex. 1 reveals a much lower Yellowness Index before and after UV exposure and also a higher color retention (lower Delta Yl) than Comp. Ex. C. It would have been expected that the values for UV transmission and Yellowness Index would converge if UVA-3 and UVA-4 were employed as a mixture in the PVB film. Surprisingly for the skilled person, this is not only not the case, but rather the opposite is true. A mixture of UVA-3 and UVA-4 leads to a synergistic effect where the favorable properties of UVA-3 and UVA-4 remain, and the unfavorable properties are superseded. Additionally, in comparison with orffio-hydroxyphenyl triazine-based UV absorbers, such as those shown in Comp. Ex. B, and their blends with tris-resorcinol triazine-based UV absorbers, such as shown in Comp. Ex. F, the inventive Ex. 1 reveals significantly lower values for %Tuv(400) Jnitial and %Tuv(400)_after, proving the outperformance of the claimed blends of tris-resorcinol-based UV absorbers over other triazine-based UVBASF SE 250175W001

[0271] absorber blends. Therefore, it can be concluded that Ex. 1 can provide a suitable alternative to the use of Tinuvin® 326, or alternatively, the composition of UVA-3 and UVA-4 can lead to a reduction in the amount of Tinuvin® 326 while maintaining high values for UV absorption and a low Yellowness Index.

Claims

BASF SE 250175W001Claims1. An interlayer film for laminated glass comprising- a polyvinyl acetal,- a plasticizer,- a resorcinol triazine mixture comprising at least- a first tris-resorcinol triazine of the formula (I),wherein Ai, A2, A3, A4, As, are independently hydrogen, Ci-Cisalkyl, Ci-Cisalkyl substituted by 1, 2 or 3 radicals selected from the group consisting of -OH, C2-Cisalkenyloxy, -C(O)OYi and -0C(0)Y2 with Y1 and Y2 being independently Ci-Cisalkyl; Ca-Csoalkyl interrupted by oxygen or Ca-Csohydroxyalkyl interrupted by oxygen;and- a second tris-resorcinol triazine of the formula (II),wherein Di, D2, D3, D4and Ds are independently hydrogen or Ci-Cisalkyl substituted by one radical of - C(O)OZi,wherein Z1, being Ci-Cisalkyl; Cs-Csoalkyl interrupted by oxygen or Cs-Csohydroxyalkyl interrupted by oxygen,wherein the first resorcinol triazine and the second resorcinol triazine are different.BASF SE 250175W0012. The interlayer film according to claim 1, wherein Ai, A2, A3, A4and As are independently hydrogen or C1- CisalkyL3. The interlayer film according to claim 1 or 2, wherein A2 is hydrogen, As is hydrogen or Ci-Cisalkyl, and A1, A3, and A4 are independently Ci-Cisalkyl, preferably A2 is hydrogen and A1, A3, A4 and As are independently Ci-Cisalkyl.

4. The interlayer film according to any one of claims of 1 to 3, wherein A1 , A3 as well as A4are independently methyl, n-butyl, 2-ethyl hexyl or an isomeric mixture of octyl, preferably n-butyl, preferably A1 , A3, A4 and As are independently methyl, n-butyl, 2-ethylhexyl or an isomeric mixture of octyl, preferably n-butyl.

5. The interlayer film according to any one of claims of 1 to 4, wherein D2 and Ds are hydrogen and Di, D3 and D4 are independently Ci-Cisalkyl substituted by one radical of -C(O)OZi.

6. The interlayer film according to any one of claims of 1 to 5, wherein Z1 is Ci-Cisalkyl.

7. The interlayer film according to any one of claims of 1 to 6, wherein Z1 is Ce-Ci2-alkyl, preferably n-hexyl, n-heptyl or n-octyl.

8. The interlayer film according to any of claims 1 to 7, wherein the first tris-resorcinol triazine is of the formula (I’)."9. The interlayer film according to any of claims 1 to 7, wherein the first tris-resorcinol triazine is of the formula (I”).BASF SE 250175W00110. The interlayer film according to any of claims 1 to 9, wherein the second tris-resorcinol triazine is of the formula (II’).

11. The interlayer film according to any of claims 1 to 9, wherein the second tris-resorcinol triazine is of the formula (II”).wherein iso-CsH stands independently for any type of iso-octyl, preferably iso-CsH stands for 2- ethyl hexyl.BASF SE 250175W00112. The interlayer film according to any of claims 1 to 11, wherein the first tris-resorcinol triazine and the second tris-resorcinol triazine are in a mixing ratio of at least 2:1 and at most 15:1, preferably at least 3:1 and at most 12:1, particularly preferably at least 5:1 and at most 10:1, for example 7:1.

13. The interlayer film according to any of claims 1 to 12, wherein the resorcinol triazine mixture is present in the interlayer film in an amount of at least 0.01 wt.% and not more than 2.0 wt.%, preferably at least 0.1 wt.% and not more than 1.0 wt.%, particularly preferably from 0.2 wt.% to 0.8 wt.%.

14. A laminated glass comprising the interlayer film as defined in any of the claims 1 to 13.

15. A use of the resorcinol triazine mixture as defined in any of the claims 1 to 13 as an UV absorber in an interlayer film for laminated glass.

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