Hydroxyphenyltriazine co-stabilizers for stabilizing polyesters.

Abstract

The present invention relates to a composition comprising a polyester material, at least one compound of formula (A) as defined below, and at least one UV absorber as defined below; and the use of a composition comprising at least one compound of formula (A) and at least one UV absorber for increasing the stability of a polyester material exposed to light.

Description

[Technical Field]

[0001] The present invention relates to a composition comprising a polyester material, at least one compound of formula (A) as defined below, and at least one UV absorber as defined below; and the use of a composition comprising at least one compound of formula (A) and at least one UV absorber for increasing the stability of a polyester material exposed to light. Combinations of preferred embodiments with other preferred embodiments are within the scope of the present invention. [Background technology]

[0002] A variety of light stabilizers for polyesters are known, and several such as UV absorbers are commercially available. There is a continuing need to further improve the stabilization of polyesters that are already stabilized with UV absorbers. Summary of the Invention [Means for solving the problem]

[0003] The object is to provide a polyester material and a) at least one formula (A) [ka] [In the formula, E1 is hydrogen; C1-C 18 Alkyl; -OH, C2-C 18 alkenyloxy, —C(O)OX1 and —OC(O)X2 (wherein X1 and X2 are independently C1 to C6 18 C1-C substituted with one, two or three groups selected from the group consisting of alkyl 18 Alkyl; C3-C interrupted by oxygen 50 Alkyl; C3-C interrupted by oxygen 50 hydroxyalkyl; or Formula (P) [ka] (In the formula, R, R′, and R″ are each independently C1 to C18 alkylene), b is an integer ranging from 1 to 3; E2 is hydrogen or hydroxyl; E3, E4, E5, and E6 are independently hydrogen, hydroxyl, C1-C 18 Alkyl, substituted or unsubstituted C1-C 18 Alkoxy, phenyl, phenyl substituted with one, two or three C1-C4 alkyl, or a group represented by the formula (Q) [ka] (wherein T and U are each independently a straight or branched C1-C 18 alkyl), E7 are each independently hydrogen or C1-C8 alkyl; b) at least one UV absorber; This is achieved by a composition comprising:

[0004] The object has also been achieved by a composition comprising at least one compound of formula (A) and at least one UV absorber for increasing the stability of polyester materials exposed to light.

[0005] The object has also been achieved by a method for preparing a composition, which comprises contacting a polyester material with at least one compound of formula (A) and at least one UV absorber. DETAILED DESCRIPTION OF THE INVENTION

[0006] In one embodiment, E1 is hydrogen; C1-C8 alkyl; -OH, -C(O)OX1 and -OC(O)X2 (wherein X1 and X2 are independently C1-C 18 C1-C substituted with one or two groups selected from the group consisting of alkyl 18 alkyl, or a group of formula (P) where b is an integer ranging from 1 to 2.

[0007] In one embodiment, b is 1 or 2. In one embodiment, when b is 1, then E1 is selected from the group consisting of hydrogen; C1-C8 alkyl; -OH, -C(O)OX1 and -OC(O)X2 (wherein X1 and X2 are independently C1-C 18 C1-C substituted with one or two groups selected from the group consisting of alkyl 18 When E1 is alkyl and b is 2, then E1 is a group of formula (P).

[0008] In one embodiment, E2 is hydrogen or hydroxyl, and E3, E4, E5, and E6 are each independently hydrogen, hydroxyl, C1-C8 alkyl, substituted or unsubstituted C1-C8 alkoxy, phenyl, or a group of formula (Q).

[0009] Suitable C1~C 18 The alkyl is a straight or branched C1-C 18 Alkyl, examples of which 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, 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.

[0010] In one embodiment, E7 are, independently of each other, hydrogen or methyl, preferably hydrogen.

[0011] In a preferred embodiment, at least one compound of formula (A) is selected from the group consisting of formulas (A-1), (A-2), (A-3) and (A-4): [ka] is selected from.

[0012] In another preferred embodiment, the at least one compound of formula (A) is selected from formulae (A-1), (A-2) and (A-3).

[0013] In another preferred embodiment, at least one compound of formula (A) is selected from formula (A-1). In another preferred embodiment, at least one compound of formula (A) is selected from formula (A-2). In another preferred embodiment, at least one compound of formula (A) is selected from formula (A-3). In another preferred embodiment, at least one compound of formula (A) is selected from formula (A-4).

[0014] In another preferred embodiment, the at least one compound of formula (A) is selected from a mixture of formulae (A-1) and (A-2).

[0015] Most of the compounds of formula (A) are known and can be prepared by processes known to those skilled in the art, for example, by methods described in U.S. Pat. No. 6,255,483B.

[0016] The UV absorber may be selected from the group consisting of 2-(2'-hydroxyphenyl)benzotriazoles, 2-hydroxybenzophenones, esters of substituted and unsubstituted benzoic acid, cyanoacrylates, benzoxazinones, formamidines, oxanilides, malonates, and mixtures thereof.

[0017] Preferred UV absorbers are those of formula (1) to (17) [ka] [ka] [ka] [ka] The UV absorbers are selected from the group consisting of:

[0018] Preferred UV absorbers are those of formulas (4), (8), (1), (2), (9), (14) and (15).

[0019] More preferred UV absorbers are those of formulas (2), (9), (14) and (15).

[0020] In a preferred embodiment, the UV absorber is of formula (2) and the compound of formula (A) is selected from formulas (A-1), (A-2) and (A-3).

[0021] In a preferred embodiment, the UV absorber is of formula (2), and the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3) and (A-4).

[0022] In another preferred form, the UV absorber is of formula (2) and the compound of formula (A) is selected from formula (A-1).

[0023] In another preferred form, the UV absorber is of formula (2) and the compound of formula (A) is selected from formula (A-2):

[0024] In another preferred form, the UV absorber is of formula (2) and the compound of formula (A) is selected from formula (A-3).

[0025] In another preferred form, the UV absorber is of formula (2) and the compound of formula (A) is selected from formula (A-4).

[0026] In another preferred form, the UV absorber is of formula (9), and the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3) and (A-4).

[0027] In another preferred form, the UV absorber is of formula (9) and the compound of formula (A) is selected from formula (A-1).

[0028] In another preferred form, the UV absorber is of formula (9) and the compound of formula (A) is selected from formula (A-2).

[0029] In another preferred form, the UV absorber is of formula (9) and the compound of formula (A) is selected from formula (A-3).

[0030] In another preferred form, the UV absorber is of formula (9) and the compound of formula (A) is selected from formula (A-4).

[0031] In another preferred form, the UV absorber is of formula (9) and the compound of formula (A) is selected from a mixture of formulas (A-1) and (A-2).

[0032] In another preferred form, the UV absorber is of formula (14), and the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3) and (A-4).

[0033] In another preferred form, the UV absorber is of formula (14) and the compound of formula (A) is selected from formula (A-1).

[0034] In another preferred form, the UV absorber is of formula (14) and the compound of formula (A) is selected from formula (A-2).

[0035] In another preferred form, the UV absorber is of formula (14) and the compound of formula (A) is selected from formula (A-3).

[0036] In another preferred form, the UV absorber is of formula (14) and the compound of formula (A) is selected from formula (A-4).

[0037] In another preferred form, the UV absorber is of formula (15), and the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3) and (A-4).

[0038] In another preferred form, the UV absorber is of formula (15) and the compound of formula (A) is selected from formula (A-1).

[0039] In another preferred form, the UV absorber is of formula (15) and the compound of formula (A) is selected from formula (A-2).

[0040] In another preferred form, the UV absorber is of formula (15) and the compound of formula (A) is selected from formula (A-3).

[0041] In another preferred form, the UV absorber is of formula (15) and the compound of formula (A) is selected from formula (A-4).

[0042] In a preferred form, the UV absorber is of formula (2), the compound of formula (A) is selected from formulas (A-1), (A-2) and (A-3), and the polyester material is polyethylene terephthalate.

[0043] In another preferred form, the UV absorber is of formula (2), the compound of formula (A) is selected from formula (A-1), and the polyester material is polyethylene terephthalate.

[0044] In another preferred form, the UV absorber is of formula (2), the compound of formula (A) is selected from formula (A-2), and the polyester material is polyethylene terephthalate.

[0045] In another preferred form, the UV absorber is of formula (2), the compound of formula (A) is selected from formula (A-3), and the polyester material is polyethylene terephthalate.

[0046] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3) and (A-4), and the polyester material is polyethylene terephthalate.

[0047] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from formula (A-1), and the polyester material is polyethylene terephthalate.

[0048] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from formula (A-2), and the polyester material is polyethylene terephthalate.

[0049] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from formula (A-3), and the polyester material is polyethylene terephthalate.

[0050] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from formula (A-4), and the polyester material is polyethylene terephthalate.

[0051] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from a mixture of formulas (A-1) and (A-2), and the polyester material is polyethylene terephthalate.

[0052] In another preferred form, the UV absorber is of formula (14), the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3) and (A-4), and the polyester material is polyethylene terephthalate.

[0053] In another preferred form, the UV absorber is of formula (14), the compound of formula (A) is selected from formula (A-1), and the polyester material is polyethylene terephthalate.

[0054] In another preferred form, the UV absorber is of formula (14), the compound of formula (A) is selected from formula (A-2), and the polyester material is polyethylene terephthalate.

[0055] In another preferred form, the UV absorber is of formula (14), the compound of formula (A) is selected from formula (A-3), and the polyester material is polyethylene terephthalate.

[0056] In another preferred form, the UV absorber is of formula (14), the compound of formula (A) is selected from formula (A-4), and the polyester material is polyethylene terephthalate.

[0057] In another preferred form, the UV absorber is of formula (15), the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3) and (A-4), and the polyester material is polyethylene terephthalate.

[0058] In another preferred form, the UV absorber is of formula (15), the compound of formula (A) is selected from formula (A-1), and the polyester material is polyethylene terephthalate.

[0059] In another preferred form, the UV absorber is of formula (15), the compound of formula (A) is selected from formula (A-2), and the polyester material is polyethylene terephthalate.

[0060] In another preferred form, the UV absorber is of formula (15), the compound of formula (A) is selected from formula (A-3), and the polyester material is polyethylene terephthalate.

[0061] In another preferred form, the UV absorber is of formula (15), the compound of formula (A) is selected from formula (A-4), and the polyester material is polyethylene terephthalate.

[0062] In a preferred form, the UV absorber is of formula (2), the compound of formula (A) is selected from formulas (A-1), (A-2) and (A-3), and the polyester material is polyethylene terephthalate present as a fiber.

[0063] In another preferred form, the UV absorber is of formula (2), the compound of formula (A) is selected from formula (A-1), and the polyester material is polyethylene terephthalate present as a fiber.

[0064] In another preferred form, the UV absorber is of formula (2), the compound of formula (A) is selected from formula (A-2), and the polyester material is polyethylene terephthalate present as a fiber.

[0065] In another preferred form, the UV absorber is of formula (2), the compound of formula (A) is selected from formula (A-3), and the polyester material is polyethylene terephthalate present as a fiber.

[0066] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3) and (A-4), and the polyester material is polyethylene terephthalate present as a fiber.

[0067] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from formula (A-1), and the polyester material is polyethylene terephthalate present as a fiber.

[0068] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from formula (A-2), and the polyester material is polyethylene terephthalate present as a fiber.

[0069] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from formula (A-3), and the polyester material is polyethylene terephthalate present as a fiber.

[0070] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from formula (A-4), and the polyester material is polyethylene terephthalate present as a fiber.

[0071] In another preferred form, the UV absorber is of formula (9), the compound of formula (A) is selected from a mixture of formulas (A-1) and (A-2), and the polyester material is polyethylene terephthalate present as a fiber.

[0072] In another preferred form, the UV absorber is of formula (14), the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3) and (A-4), and the polyester material is polyethylene terephthalate present as a fiber.

[0073] In another preferred form, the UV absorber is of formula (14), the compound of formula (A) is selected from formula (A-1), and the polyester material is polyethylene terephthalate present as a fiber.

[0074] In another preferred form, the UV absorber is of formula (14), the compound of formula (A) is selected from formula (A-2), and the polyester material is polyethylene terephthalate present as a fiber.

[0075] In another preferred form, the UV absorber is of formula (14), the compound of formula (A) is selected from formula (A-3), and the polyester material is polyethylene terephthalate present as a fiber.

[0076] In another preferred form, the UV absorber is of formula (14), the compound of formula (A) is selected from formula (A-4), and the polyester material is polyethylene terephthalate present as a fiber.

[0077] In another preferred form, the UV absorber is of formula (15), the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3) and (A-4), and the polyester material is polyethylene terephthalate present as a fiber.

[0078] In another preferred form, the UV absorber is of formula (15), the compound of formula (A) is selected from formula (A-1), and the polyester material is polyethylene terephthalate present as a fiber.

[0079] In another preferred form, the UV absorber is of formula (15), the compound of formula (A) is selected from formula (A-2), and the polyester material is polyethylene terephthalate present as a fiber.

[0080] In another preferred form, the UV absorber is of formula (15), the compound of formula (A) is selected from formula (A-3), and the polyester material is polyethylene terephthalate present as a fiber.

[0081] In another preferred form, the UV absorber is of formula (15), the compound of formula (A) is selected from formula (A-4), and the polyester material is polyethylene terephthalate present as a fiber.

[0082] The weight ratio of the at least one compound of formula (A) to the at least one UV absorber may be from 2:1 to 1:20, preferably from 1.5:1 to 1:12, in particular from 1.3:1 to 1:10.

[0083] The polyester material can be a polyester, a polyester copolymer, or a polyester blend.

[0084] The polyesters may be homo- or copolyesters derived from aliphatic, cycloaliphatic or aromatic dicarboxylic acids and diols, or from hydroxycarboxylic acids. In addition, mixtures of polyesters are also suitable.

[0085] Aliphatic dicarboxylic acids may contain from 2 to 40 carbon atoms, alicyclic dicarboxylic acids from 6 to 10 carbon atoms, aromatic dicarboxylic acids from 8 to 14 carbon atoms, aliphatic hydrocarboxylic acids from 2 to 12 carbon atoms, and aromatic and alicyclic hydroxycarboxylic acids from 7 to 14 carbon atoms.

[0086] The aliphatic diols can contain from 2 to 12 carbon atoms, the alicyclic diols from 5 to 8 carbon atoms, and the aromatic diols from 6 to 16 carbon atoms.

[0087] An aromatic diol will be understood to mean one in which two hydroxyl groups are attached to one or different aromatic hydrocarbon groups.

[0088] The polyesters may also be branched with small amounts, typically 0.1 to 3 mole % based on the dicarboxylic acid, of more than difunctional monomers (e.g., pentaerythritol, trimellitic acid, 1,3,5-tris(hydroxyphenyl)benzene, 2,4-dihydroxybenzoic acid, or 2-(4-hydroxyphenyl)-2-(2,4-dihydroxyphenyl)propane).

[0089] When the polyester is based on at least two monomers, said monomers may be randomly distributed or they may be block polymers.

[0090] Suitable dicarboxylic acids are straight-chain and branched-chain saturated aliphatic dicarboxylic acids, aromatic dicarboxylic acids and cycloaliphatic dicarboxylic acids.

[0091] Suitable aliphatic dicarboxylic acids are those containing 2 to 40 carbon atoms and are typically suberonic acid, oxalic acid, malonic acid, dimethylmalonic acid, succinic acid, octadecylsuccinic acid, pimelic acid, adipic acid, trimethyladipic acid, sebacic acid, azelaic acid, and dimer acids (dimerization products of unsaturated aliphatic carboxylic acids such as oleic acid), alkylated malonic acids and succinic acids such as octadecylsuccinic acid.

[0092] Suitable cycloaliphatic dicarboxylic acids are 1,3-cyclobutanedicarboxylic acid, 1,3-cyclopentanedicarboxylic acid, 1,3- and 1,4-cyclohexanedicarboxylic acid, 1,3- and 1,4-(dicarboxylic acidmethyl)cyclohexane, 4,4'-dicyclohexyldicarboxylic acid.

[0093] Suitable aromatic dicarboxylic acids are preferably terephthalic acid, isophthalic acid, o-phthalic acid, as well as 1,3-, 1,4-, 2,6- or 2,7-naphthalenedicarboxylic acid, 4,4'-diphenyldicarboxylic acid, 4,4'-diphenylsulfonecarboxylic acid, 1,1,3-trimethyl-5-carboxy-3-(p-carboxyphenyl)indane, 4,4'-diphenyletherdicarboxylic acid, bis-p-(carboxyphenyl)methane, 4,4'-benzophenonedicarboxylic acid, bis-(p-carboxyphenyl)ethane).

[0094] Aromatic dicarboxylic acids including terephthalic acid and isophthalic acid are particularly preferred.

[0095] Further suitable dicarboxylic acids are those containing a -CO-NH- group. Dicarboxylic acids containing an N-heterocycle, such as those derived from carboxyalkylated, carboxyphenylated, or carboxybenzylated monoamine-s-triazine dicarboxylic acids, mono- or bis-hydantoins, benzimidazolenes, or halogenated benzimidazolenes, or parabanic acids, are also suitable. The carboxyalkyl groups in these compounds may contain 3 to 20 carbon atoms.

[0096] Suitable aliphatic diols include straight-chain and branched-chain aliphatic glycols, preferably those containing 2 to 12, most preferably 2 to 6, carbon atoms in the molecule, and typically include ethylene glycol, 1,2- and 1,3-propylene glycol, 1,2-, 1,3-, 2,3-, or 1,4-butanediol, pentyl glycol, neopentyl glycol, 1,6-hexanediol, and 1,12-dodecanediol.

[0097] A suitable cycloaliphatic diol is typically 1,4-dihydroxycyclohexane in the cis or trans form, or as a cis / trans mixture. Further suitable aliphatic diols are typically 1,4-bis(hydroxymethyl)cyclohexane (e.g., a mixture of cis and trans isomers), p-xylylene glycol or 2,5-dichloro-p-xylylene glycol, aromatic-aliphatic diols such as 2,2-(β-hydroxyethoxyphenyl)propane, and polyoxyalkylene glycols such as diethylene glycol, triethylene glycol, or polyethylene glycol. The alkylene diol is preferably linear and preferably contains 2 to 4 carbon atoms.

[0098] Preferred diols are alkylene diols, 1,4-dihydroxycyclohexane and 1,4-bis(hydroxymethyl)cyclohexane. Ethylene glycol and 1,4-butanediol are particularly preferred.

[0099] Further suitable aliphatic diols are β-hydroxyalkylated, preferably β-hydroxyethylated, bisphenols, such as bisphenols exemplified by 2,2-bis-4'-(β-hydroxyethoxy)phenylpropane.

[0100] Suitable aromatic diols are mononuclear diphenols, preferably dinuclear diphenols having a hydroxyl group on each aromatic nucleus, where aromatic will be understood to mean an aromatic hydrocarbon group, preferably phenylene or naphthylene.

[0101] The hydroxyl group in the aromatic group may be in the m-position, but is preferably in the p-position. The aromatic group may be substituted by an alkyl of 1 to 6 carbon atoms, a halogen such as chloro or bromo, or preferably a hydrogen atom. The aromatic group may be a direct bond or a -O-, -S-, -SO2-, -CO-, >P(O)(C1-C 20The alkyl group may be linked by alkyl), unsubstituted or substituted alkylidene, cycloalkylidene, or alkylene. Unsubstituted or substituted alkylidene is exemplified by ethylidene, 1,1- or 2,2-propylidene, 2,2-butylidene, 1,1-isobutylidene, pentylidene, hexylidene, heptylidene, octylidene, dichloroethylidene, and trichloroethylidene. Representative examples of unsubstituted or substituted alkylene are methylene, ethylene, phenylmethylene, diphenylmethylene, and methylphenylmethylene. Representative examples of cycloalkylidene are cyclopentylidene, cyclohexylidene, cycloheptylidene, and cyclooctylidene.

[0102] Representative examples of bisphenols are: bis(p-hydroxyphenyl) ether or thioether, bis(p-hydroxyphenyl) sulfone, bis(p-hydroxyphenyl)methane, bis(4-hydroxyphenyl)-2,2'-biphenyl, phenylhydroquinone, 1,2-bis(p-hydroxyphenyl)ethane, 1-phenyl-bis(p-hydroxyphenyl)methane, diphenylbis(p-hydroxyphenyl)methane, diphenylbis(p-hydroxyphenyl)ethane, diphenylbis(p-hydroxyphenyl)methane, bis(3,5-dimethyl-4-hydroxyphenyl)sulfone, bis(3,5-dimethyl-4-hydroxyphenyl)-p-diisopropyl propylbenzene, bis(3,5-dimethyl-4-hydroxyphenyl)-m-diisopropylbenzene, 2,2-bis(3',5'-dimethyl-4'-hydroxyphenyl)propane, 1,1- or 2,2-bis(p-hydroxyphenyl)butane, 2,2-bis(p-hydroxyphenyl)hexafluoropropane, 1,1-dichloro- or 1,1,1-trichloro-2,2-bis(p-hydroxyphenyl)ethane, 1,1-bis(p-hydroxyphenyl)cyclopentane, and preferably 2,2-bis(p-hydroxyphenyl)propane (bisphenol A) and 1,1-bis(p-hydroxyphenyl)cyclohexane (bisphenol C).

[0103] Suitable polyesters of hydroxycarboxylic acids typically include polycaprolactone, polypivalolactone, or polyesters of 4-hydroxycyclohexanecarboxylic acid or 4-hydroxybenzoic acid, 5-hydroxynaphthalene-1-carboxylic acid, 6-hydroxynaphthalene-1-carboxylic acid.

[0104] Polyesters of hydroxycarboxylic acids can be obtained from hydroxycarboxylic acids, the corresponding cyclic monoesters (e.g., lactones such as caprolactone), or the corresponding cyclic diesters (e.g., lactides). For example, polycaprolactone can be obtained by ring-opening polymerization of caprolactone; or polylactic acid can be obtained by ring-opening polymerization of lactide (also known as 3,6-dimethyl-1,4-dioxane-2,5-dione).

[0105] Preferred polyester materials are polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polylactic acid (PLA), polycyclohexylene dimethylene terephthalate (PCT), polyethylene naphthalate (PEN), polytrimethylene terephthalate (PTT), polyethylene furanoate (PEF), or corresponding copolymers or blends.

[0106] Preferred polyester materials are PET, PBT and the corresponding copolymers and blends as exemplified by PBT / PC, PBT / ASA, PBT / ABS, PET / ABS, PET / PC or even PBT / PET / PC or PBT / PC / ABS, which contain predominantly the indicated polyester.

[0107] More preferred polyester materials are PET, PTT, PBT, PEF and copolymers thereof.

[0108] A particular polyester material is PET and its copolymers.

[0109] Polyesters can be prepared by direct esterification (PTA process), transesterification (DMT process), or ring-opening polymerization of cyclic monoesters or diesters.

[0110] The polyester can be virgin polyester or polyester recycle. Preferred forms include polyester recycle derived from household and industrial waste, or from useful material collection, production waste, or mandatory returnable waste. Regarding the chemical composition of polyester recycle, the details above also apply. In this case, PET and PBT recycle are also preferred. Polyester recycle consists primarily of PET hollow waste, particularly PET bottle material, which has different properties and varying degrees of damage. PET bottle material from different manufacturers contains polyethylene terephthalate and copolymers of different structures and compositions, but has an overwhelming content of PET structure. Recycles may also contain small amounts of other polymers, including polyolefins or PVC. These recycles may also contain standard impurities such as dye residues, paint residues, metal traces, fuel residues, or inorganic salts.

[0111] The polyester material may contain further additives such as antioxidants, processing stabilizers, light stabilizers other than the compound of formula (A), fillers, reinforcing agents, pigments, metal deactivators, plasticizers, lubricants, emulsifiers, rheological additives, catalysts, flow control agents, optical brighteners, flame retardants, antistatic agents, and blowing agents.

[0112] Other suitable further additives are chain extenders, hydrolysis inhibitors, processing modifiers (e.g. based on lactones, hydroxylamines or amine oxides), anti-agglomerating agents (e.g. glycerol monostearate, calcium stearate), slip and antiblocking agents, antistatic agents, anti-fog agents, matting agents (e.g. TiO), colorants (e.g. pigments, carbon black, dyes), flame retardants, antibacterial agents, surface modifiers (e.g. water repellent-hydrophobic or hydrophilic agents).

[0113] Preferred further additives, for example for use with polyester fibres, are antioxidants, processing stabilizers, pigments, flame retardants, antistatic agents, chain extenders, hydrolysis inhibitors, processing modifiers (e.g. based on lactones, hydroxylamines or amine oxides), anti-agglomerating agents (e.g. glycerol monostearate, calcium stearate), slip and antiblocking agents, antistatic agents, anti-fog agents, matting agents (e.g. TiO), colourants (e.g. pigments, carbon black, dyes), flame retardants, antibacterial agents, surface modifiers (e.g. water-repellent-hydrophobic or hydrophilic agents).

[0114] Further additives may for example be selected from the following list:

[0115] 1. Antioxidants 1.1. 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-tricyclopentyl-4-methylphenol, diisohexylphenol, 2,6-di-tert-butyl-4-methoxymethyl-phenol, nonylphenols whose side chains are linear or branched, such as 2,6-dinonyl-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, 2,4-dimethyl-6-(1'-methyl-1'-tetradecyl-methyl)phenol, and mixtures thereof.

[0116] 1.2. Alkylthiomethylphenols, such as 2,4-dioctylthiomethyl-6-tert-butylphenol, 2,4-dioctylthiomethyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ethylphenol, 2,6-di-dodecyl-thiomethyl-4-nonylphenol.

[0117] 1.3. Hydroquinone 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-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.

[0118] 1.4. Tocopherols, such as α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol and mixtures thereof (vitamin E), vitamin E acetate. In particular, it is preferable to add commercially available vitamin E, 2,5,7,8-tetramethyl-2-[4,8,12-trimethyltridecyl]-chroman-6-ol (e.g., Irganox E 201 (trademark)).

[0119] 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.

[0120] 1.6. Alkylidene bisphenols, such as 2,2'-methylenebis(6-tert-butyl-4-methylphenol), 2,2'-methylenebis(6-tert-butyl-4-ethylphenol), 2,2'-methylenebis[4-methyl-6-(α-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-(α,α-dimethylbenzyl)-4-nonylphenol], 2,2'-methylenebis[6-(α,α-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 Benzene, 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.

[0121] 1.7. O-, N-, and S-benzyl compounds, such as 3,5,3',5'-tetra-tert-butyl-4,4'-dihydroxydibenzyl ether, octadecyl-4-hydroxy-3,5-dimethylbenzyl mercaptoacetate, tridecyl-4-hydroxy-3,5-di-tert-butylbenzyl mercaptoacetate, tris(3,5-di-tert-butyl-4-hydroxy-benzyl)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-hydroxybenzyl mercaptoacetate.

[0122] 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-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.

[0123] 1.9. Aromatic hydroxybenzyl compounds, such as 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.

[0124] 1.10. Triazine compounds, such as 2,4-bis(octylmercapto)-6-(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,3,5-triazine, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,2,3-triazine, 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.

[0125] 1.11. Benzyl phosphonates, 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-methylbenzylphosphonate, calcium salt of the monoethyl ester of 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid, (3,5-di-tert-butyl-4-hydroxy-phenyl)methylphosphonic acid.

[0126] 1.12. Acylaminophenols, such as 4-hydroxylauranilide, 4-hydroxystearanilide, octyl N-(3,5-di-tert-butyl-4-hydroxyphenyl)carbamate.

[0127] 1.13. Esters of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid with monohydric or polyhydric alcohols, such as methanol, ethanol, n-octanol, i-octanol, mixtures of linear or branched C7-C9 alkanols, octadecanol, linear or branched C 13 ~C 15 Esters with β-alkanol mixtures, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, tetraethylene 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. Preferred are esters of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, especially with octadecanol, such as the adduct of octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, which is commercially available (e.g., Irganox 1076™).

[0128] 1.14. Esters of β-(5-tert-butyl-4-hydroxy-3-methylphenyl)propionic acid with monohydric or polyhydric alcohols, such as 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)isothiazolinone, Cyanurate, N,N'-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane; ester with 3,9-bis[2-{3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane.

[0129] 1.15. Esters of β-(3,5-dicyclohexyl-4-hydroxyphenyl)propionic acid with mono- or polyhydric alcohols, such as 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.

[0130] 1.16. Esters of 3,5-di-tert-butyl-4-hydroxyphenylacetic acid with monohydric or polyhydric alcohols, such as 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, and 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

[0131] 1.17. Amides of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, such as 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®, supplied by SI Group).

[0132] 1.18. Ascorbic acid (vitamin C).

[0133] 1.19. Amine antioxidants, such as N,N'-diisopropyl-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 amine, 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'-sec-butyl-p-phenylenediamine diphenylamine, N-allyldiphenylamine, 4-isopropoxydiphenylamine, N-phenyl-1-naphthylamine, N-(4-(tert-octylphenyl)-1-naphthylamine, N-phenyl-2-naphthylamine, nonylated diphenylamine, octylated diphenylamine such as 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-methylphenyl)amino]ethane, 1,2-bis(phenylamino)propane, (o-tolyl)biguanide, bis[4-(1',3'-dimethylbutyl)phenyl]amine, tert-octylated N-phenyl-1-naphthylamine, mixtures of mono- and dialkylated tert-butyl / tert-octyldiphenylamines, mixtures of mono- and dialkylated nonyldiphenylamines, mixtures of mono- and dialkylated dodecyldiphenylamines, mixtures of mono- and dialkylated isopropyl / isohexyldiphenylamines, mixtures 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-naphthalenamine] (commercially available as Irganox L06™).

[0134] Alternatively or additionally, mixtures of commercially available additives can be used, of which particularly preferred is Irganox 5057™, obtained by reaction of diphenylamine with diisobutylene and comprising: (A) 5057 Diphenylamine; (B) 5057 4-tert-butyldiphenylamine; (C) 5057 Compounds of the group i) 4-tert-octyldiphenylamine, ii) 4,4'-di-tert-butyldiphenylamine, iii) 2,4,4'-tris-tert-butyldiphenylamine, (D) 5057 Compounds of the group i) 4-tert-butyl-4'-tert-octyldiphenylamine, ii) o,o', m,m' or p,p'-di-tert-octyldiphenylamine, iii) 2,4-di-tert-butyl-4'-tert-octyldiphenylamine, (E) 5057 Compounds of the group i) 4,4'-di-tert-octyldiphenylamine, ii) 2,4-di-tert-octyl-4'-tert-butyldiphenylamine, wherein 5% by weight or less of component (A) 5057 , 8 to 15% by weight of component (B) 5057 , 24 to 32% by weight of component (C) 5057 , 23 to 34% by weight of component (D) 5057 and 21 to 34% by weight of component (E). 5057 exists.

[0135] 2. Light stabilizers 2.5. Nickel compounds, such as nickel complexes of 2,2'-thiobis[4-(1,1,3,3-tetramethylbutyl)phenol], for example 1:1 or 1:2 complexes, with or without additional ligands such as n-butylamine, triethanolamine or N-cyclohexyldiethanolamine, nickel dibutyldithiocarbamate, nickel salts of monoalkyl esters of 4-hydroxy-3,5-di-tert-butylbenzylphosphonic acid, for example the methyl or ethyl ester, nickel complexes of ketoximes, for example 2-hydroxy-4-methylphenylundecylketoxime, nickel complexes of 1-phenyl-4-lauroyl-5-hydroxypyrazole, with or without additional ligands.

[0136] 2.6. Sterically hindered amines, such as bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate, bis(2,2,6,6-tetramethyl-4-piperidyl)succinate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)n-butyl-3,5-di-tert-butyl-4-hydroxybenzylmalonate, condensation product of 1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine with succinic acid, N,N'-bis(2,2,6,6- Linear or cyclic condensation products of tetramethyl-4-piperidyl)hexamethylenediamine with 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-tetramethylpiperazinone), 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)succinate, bis-[2,2,6,6-tetramethyl-1- (undecyloxy)-piperidin-4-yl] carbonate, linear or cyclic condensation product of N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine with 4-morpholino-2,6-dichloro-1,3,5-triazine, condensation product of 2-chloro-4,6-bis(4-n-butylamino-2,2,6,6-tetramethylpiperidyl)-1,3,5-triazine with 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,Condensation product of 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, a mixture of 4-hexadecyloxy- and 4-stearyloxy-2,2,6,6-tetramethylpiperidine condensation product of N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine with 4-cyclohexylamino-2,6-dichloro-1,3,5-triazine; condensation product of 1,2-bis(3-aminopropylamino)ethane with 2,4,6-trichloro-1,3,5-triazine and 4-butylamino-2,2,6,6-tetramethylpiperidine (CAS Registry Number [136504-96-6]); 1,6-hexanediamine and 2,4,6-trichloro-1,3,5-triazine and N,N-dibutyl Condensation product of butylamine and 4-butylamino-2,2,6,6-tetramethylpiperidine (CAS Registry Number [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] with 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, reaction products of 7,7,9,9-tetramethyl-2-cycloundecyl-1-oxa-3,8-diaza-4-oxospiro-[4,5]decane with 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, diester of 4-methoxymethylenemalonic acid and 1,2,2,6,6-pentamethyl-4-hydroxypiperidine, poly[methylpropyl-3-oxy-4-(2,2,6,6-tetramethyl-4-piperidyl)]siloxane, reaction products of maleic anhydride-α-olefin copolymer with 2,2,6,6-tetramethyl-4-aminopiperidine or 1,2,2,6,6-pentamethyl-4-aminopiperidine, N,N'-bis-(2,2,6,6-tetramethyl-1-propoxy-piperidyl)hexamethylenediamine 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 end-capped with 2-chloro-4,6-bis-(di-n-butylamino)-[1,3 A mixture of oligomeric compounds, which are the formal condensation products of 2,4-dichloro-6-{n-butyl-(2,2,6,6-tetramethyl-piperidin-4-yl)amino}-[1,3,5]triazine end-capped with 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-tetramethyl-piperidin-4-yl)-N-butylamino]-[1,3,5]triazine-2,4-diamine, o]-6-(2-hydroxyethyl)amino-1,3,5-triazine, 1-(2-hydroxy-2-methylpropoxy)-4-octadecanoyloxy-2,2,6,6-tetramethylpiperidine, 5-(2-ethylhexanoyl)oxymethyl-3,3,5-trimethyl-2-morpholinone, Sanduvor 3058 (Clariant; CAS Registry Number [106917-31-1]), 5-(2-ethylhexanoyl)oxymethyl-3,3,5-trimethyl-2-morpholinone, 2,4-bis-[(1-cyclohexyloxy-2,2,6,Reaction products of [6-piperidin-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-tetramethylpiperazin-3-one-4-yl)amino)-s-triazine, 1,3,5-tris(N-cyclohexyl-N-(1,2,2,6,6-pentamethylpiperazin-3-one-4-yl)amino)-s-triazine.

[0137] 3. Metal deactivators, such as N,N'-diphenyloxamide, N-salicylal-N'-salicyloylhydrazine, N,N'-bis(salicyloyl)hydrazine, N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenyl-propionyl)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.

[0138] 4. Phosphites and phosphonates such as trisalkyl (C12-C15) phosphite, triisodecyl phosphite, triisotridecyl phosphite, dioleylhydrogen phosphite, triisooctyl phosphite, heptakis(dipropylene glycol) triphosphite, trilauryl trithiophosphite, tris(dipropylene glycol) phosphite, dimethyl hydrogen phosphite, dibutyl hydrogen phosphite, dilauryl hydrogen phosphite, tri-C12-C14-phosphite, or bis(2-ethylhexyl) hydrogen phosphite. Other phosphites or phosphonates are, for example, liquids such as di-n-octyl hydrogen phosphite or di-iso-octyl hydrogen phosphite or, for example, triphenyl phosphite, tris(nonylphenyl) phosphite, phenyl diisodecyl phosphite, diphenyl isodecyl phosphite, [triphenyl phosphite, polymer of 1,4-cyclohexanedimethanol and polypropylene glycol, C10-16 alkyl ester (CAS Registry Number 1821217-71-3)]. Further optional phosphite or phosphonate additives include, for example, alkyl (C12-C15) bisphenol A phosphite, alkyl (C10) bisphenol A phosphite, poly(dipropylene glycol) phenyl phosphite, tris(tridecyl) phosphite, diphenyl phosphite, dodecylnonylphenol phosphite blend, phenyl neopentylene glycol phosphite, poly 4,4' isopropylidenediphenol-C10 alcohol phosphite, poly 4,4' isopropylidenediphenol-C12-15 alcohol phosphite, diphenyl alkyl phosphite, phenyl dialkyl phosphite, C 12 -C 18 Alkylbis[4-(1-methyl-1-phenyl-ethyl)phenyl]phosphite, C 12 -C 18Alkenyl 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-phenyl-ethyl)phenyl]phosphite, [4-(1-methyl-1-phenyl-ethyl)phenyl]bis[(E)-octadec-9-enyl]phosphite, trilauryl phosphite, trioctadecyl phosphite, Distearyl pentaerythritol 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, 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, mixtures of at least two different tris(mono-C1-C8-alkyl)phenyl phosphites, for example, the products of Examples 1 and 2 of U.S. Pat. No. 74 68410B2, mixtures of phosphites containing at least two different tris(amylphenyl)phosphites, such as those described in U.S. Pat. No. 8,008,383B2 as mixtures 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 and 26, tris[4-(1,1-dimethylpropyl)phenyl]phosphite, [2,4-bis(1,1-dimethylpropyl)phenyl]bis[4-(1,1-dimethylpropyl)phenyl]phosphite, bis[2,4-bis(1,a mixture of at least four different phosphites including tris[2,4-bis(1,1-dimethylpropyl)phenyl]phosphite and tris[2,4-bis(1,1-dimethylpropyl)phenyl]phosphite, for example a mixture of phosphites including at least two different tris(butylphenyl)phosphites as described in U.S. Pat. No. 8,008,383 B2 as mixtures 34, 35, 36, 37, 38, 39, and 40; an oxyalkylene-bridged bis-(di-C6-aryl)diphosphite; or (i) a tris[2,4-bis(1,1-dimethylpropyl)phenyl]phosphite. oligomeric phosphites obtained by condensation of (i) triphenylphosphite with (ii) dihydroxyalkanes optionally interrupted by one or more oxygen atoms and / or bis(hydroxyalkyl)(alkyl)amines, with (ii) dihydroxyalkanes interrupted by one or more oxygen atoms, and (iii) monohydroxy-C6-arenes, such as the products of Examples 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 and 17, as described in U.S. Pat. No. 8,304,477 B2, under elimination of hydrogen chloride; and (iii) monohydroxyalkanes optionally interrupted by one or more oxygen atoms, such as the products of Examples 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11, as described in U.S. Pat. No. 8,563,637 B2, with the elimination of phenol. 1,3,2-Dioxaphosphocin, bis(2,4-di-tert-butyl-6-methylphenyl)methyl bis(2,4-di-tert-butyl-6-methylphenyl)methyl phosphite, bis(2,4-di-tert-butyl-6-methylphenyl)ethyl phosphite, 6-fluoro-2,4,8,10-tetra-tert-butyl-12-methyl-dibenz[d,g]-1,3,2-dioxaphosphocin, 1,3,7,9-tetra-tert-butyl-11-octoxy-5H-benzo[d][1,3,2]benzodioxaphosphocin, 2,2',2''-nitrilo[triethyltris(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl)phosphite], phosphoric acid, triphenyl ester, polymer with α-hydro-ω-hydroxypoly[oxy(methyl-1,2-ethanediyl)], C10-16-alkyl ester (CAS Registry Number [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-dioxaphosphiran, phosphorous acid, mixed 2,4-bis(1,1-dimethylpropyl)phenyl and 4-(1,1-dimethylpropyl)phenyl triester (CAS Registry Number [939402-02-5]).

[0139] The following phosphites are particularly preferred: tris(2,4-di-tert-butylphenyl)phosphite (Irgafos® 168, Ciba Specialty Chemicals Inc.), tris(nonylphenyl)phosphite, [ka]

[0140] 5. Hydroxylamines and amine N-oxides, such as N,N-dibenzylhydroxylamine, N,N-di-ethylhydroxylamine, 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-dialkylhydroxylamines derived from hydrogenated tallowamine, N,N-bis-(hydrogenated rapeseed oil alkyl)-N-methylamine N-oxide or trialkylamine N-oxides.

[0141] 6. Nitrones, such as N-benzyl-α-phenyl nitrone, N-ethyl-α-methyl nitrone, N-octyl-α-heptyl nitrone, N-lauryl-α-undecyl nitrone, N-tetradecyl-α-tridecyl nitrone, N-hexadecyl-α-pentadecyl nitrone, N-octadecyl-α-heptadecyl nitrone, N-hexadecyl-α-heptadecyl nitrone, N-octadecyl-α-pentadecyl nitrone, N-heptadecyl-α-heptadecyl nitrone, N-octadecyl-α-hexadecyl nitrone, nitrones derived from N,N-dialkylhydroxylamines derived from hydrogenated tallow amines (optionally of vegetable origin).

[0142] 7. Thiosynergists, such as dilauryl thiodipropionate, dimistryl thiodipropionate, distearyl thiodipropionate and pentaerythritol tetrakis-[3-(n-lauryl)propionate].

[0143] 8. Peroxide scavengers, for example, esters of α-thiodipropionic acid, such as the lauryl, stearyl, myristyl or tridecyl ester, zinc salts of mercaptobenzimidazole or 2-mercaptobenzimidazole, zinc dibutyldithiocarbamate, dioctadecyl disulfide, pentaerythritol tetrakis(β-dodecylmercapto)propionate.

[0144] 10. Polyamide stabilizers, such as copper salts in combination with iodides and / or phosphorus compounds and salts of divalent manganese.

[0145] 11. 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, zeolites, hydrotalcites, calcium hydroxides, zinc oxide.

[0146] 12. Nucleating agents, for example, inorganic substances such as talcum, metal oxides such as titanium dioxide or magnesium oxide, phosphoric acid, including phosphates such as 2,2'-methylene-bis(4,6-di-tert-butylphenol)phosphate sodium salt, 2,2'-methylene-bis(4,6-di-tert-butylphenol)phosphate aluminum salt or 2,2'-methylene-bis(4,6-di-tert-butylphenol)phosphate lithium salt, preferably alkaline earth metal carbonates or sulfates, organic compounds, for example Mono- or polycarboxylic acids and their salts, for example, 4-tert-butylbenzoic acid, adipic acid, diphenylacetic acid, sodium succinate or sodium benzoate, calcium 1,2-cyclohexanedicarboxylic acid, disodium bicyclo[2.2.1]heptane-2,3-dicarboxylic acid, polymeric compounds such as ionic copolymers (ionomers), triaminobenzene derivatives such as 1,3,5-tris[2,2-dimethylpropionylamine]benzene, zinc glycerate, and nonitol derivatives. 1,3:2,4-bis(3',4'-dimethylbenzylidene)sorbitol, 1,3:2,4-di(paramethyldibenzylidene)sorbitol, and 1,3:2,4-di(benzylidene)sorbitol are particularly preferred.

[0147] 13. Fillers and reinforcing agents, for example, calcium carbonate, silicates, glass fibers, glass beads, asbestos, talc, kaolin, mica, barium sulfate, metal oxides and hydroxides, carbon black, graphite, wood flour and other natural product flours or fibers, synthetic fibers.

[0148] 14. Other additives, such as plasticizers, lubricants, emulsifiers, pigments, rheological additives, catalysts, flow control agents, optical brighteners, flame retardants, antistatic and foaming agents, heat stabilizers, anti-fog agents, anti-misting agents, anti-blocking additives, slip agents, anti-scratch agents.

[0149] 15. Benzofuranones and indolinones, for example, U.S. Pat. No. 4,325,863A; U.S. Pat. No. 4,338,244A; U.S. Pat. No. 5,175,312A; U.S. Pat. No. 5,216,052A; U.S. Pat. No. 5,252,643A; German Patent No. 4316611A; German Patent No. 4316622A; German Patent No. 4316876A; European Patent Application Publication No. 0589839A or European Patent Application Publication No. 0591102A, International Patent Application Publication No. WO 2015 / 121445A and those disclosed in the publication No. WO 2017 / 025431, 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-hydroxyethoxy)ethoxy]ethoxy]ethoxy]phenyl]-3H-benzofuran-2-one, 5,7-di-tert-butyl-3-[4-(2-stearoyloxy-ethoxy)phenyl]benzofuran-2-one, 5,7-di-tert-butyl-3-[4-(2-stearoyloxy-ethoxy)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 Zofuran-2-one, 3-(3,5-dimethyl-4-pivaloyloxyphenyl)-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-tetramethylbutyl)phenyl)-5-(1,1,3,3-tetramethylbutyl)benzofuran-2-one, [6-[6-[6-[2-[4-(5,7-di-tert-butyl-2-oxo-3H-benzofuran-3-yl)phenoxy]ethoxy]-6-oxohexoxy]-6-oxohexoxy]-6-oxohexyl]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-benzo-furan-3-yl)phenyl]3,5-di-tert-butyl-4-hydroxybenzoate, 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.

[0150] 16. Flame retardants 16.1. Phosphorus-containing flame retardants, such as the following reactive phosphorous-containing flame retardants: tetraphenylresorcinol diphosphite (Fyrolflex RDP, RTM, Akzo Nobel), tetrakis(hydroxy-methyl)phosphonium sulfide, triphenyl phosphate, diethyl-N,N-bis(2-hydroxyethyl)aminomethyl phosphonate, hydroxyalkyl esters of phosphoric acid, alkyl phosphate oligomers, ammonium polyphosphate (APP), resorcinol diphosphate oligomer (RDP), phosphazene flame retardants or ethylenediamine diphosphate (EDAP).

[0151] 16.2. Nitrogen-containing flame retardants, for example melamine-based flame retardants, isocyanurates, polyisocyanurates; tris(2-hydroxyethyl)isocyanurate, tris(hydroxymethyl)isocyanurate, tris(3-hydroxy-n-propyl)isocyanurate; esters of isocyanuric acid such as triglycidyl isocyanurate; melamine cyanurate, melamine borate, melamine phosphate, melamine pyrophosphate, melamine polyphosphate, melamine ammonium polyphosphate, ammonium melamine pyrophosphate, dimelamine phosphate, dimelamine pyrophosphate, benzoguanamine, allantoin, glycoluril, urea cyanurate; condensation products and / or higher condensation compounds of melamine from the melem, melam, melon series; or reaction products of melamine with phosphoric acid or mixtures thereof.

[0152] 16.3. Organic halogen flame retardants, such as polybrominated diphenyl oxides, 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), chloroalkyl phosphate oligomer, chlorendic acid, tetrachlorophthalic acid, tetrabromophthalic acid, poly-b-chloroethyl triphosphonate mixture; tetrabromobisphenol A-bis(2,3-dibromopropyl ether) (PE68), brominated epoxy resin, brominated aryl ester, 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. Some of the above halogenated flame retardants are routinely combined with inorganic oxide synergists. Some of the above halogenated flame retardants can be used in combination with triaryl phosphates (such as propylated and butylated triphenyl phosphates) and / or oligomeric aryl phosphates (such as resorcinol bis(diphenyl phosphate), bisphenol A bis(diphenyl phosphate), neopentyl glycol bis(diphenyl phosphate)).

[0153] 16.4. Inorganic flame retardants, such as aluminum trihydroxide (ATH), boehmite (AlOOH), magnesium dihydroxide (MDH), zinc borate, CaCO3, organically modified layered silicates, organically modified layered double hydroxides and mixtures thereof. With regard to synergistic effects in combination with halogenated flame retardants, the most common inorganic oxide synergists are zinc oxide, antimony oxides such as Sb2O3 or Sb2O5 or boron compounds.

[0154] The contact of the compound of formula (A), the UV absorber, and optionally further additives in the polyester material can be achieved by conventional methods, such as adding the modifier blend or a single component thereof to the polyester material. The components can be added to the polyester material in the form of a liquid, powder, granules, or masterbatch. The compound of formula (A), the UV absorber, and optionally further additives can be added to the synthetic polymer individually or mixed together.

[0155] The polyester material can exist in a wide variety of forms, such as, for example, a film, a fiber (continuous or discontinuous), a monofilament, a woven or nonwoven fabric, a tape, or a molded article. Preferably, the polyester material exists as a fiber or a film. In particular, the polyester material exists as a fiber.

[0156] Fibers that can be bicomponent fibers are fibers that contain at least two distinct polymer domains a) and b) that are in close contact along the length of the fiber. They can be of any shape and are not limited to a specific shape. Examples of such shapes are side-by-side, sheath-core, orange, and matrix and fibril types. Sheath-core and side-by-side bicomponent fibers, especially sheath-core bicomponent fibers, are preferred.

[0157] The fiber diameter may range from 1 to 50 microns, preferably from 1 to 20 microns, and most preferably from 1 to 10 microns. For non-circular bicomponent fibers, such as trilobal or X-shaped fibers, the diameter is measured across a circle surrounding the outer end of the fiber.

[0158] Suitable articles also include nonwovens, which refer to fibrous structures of individual fibers, filaments, or threads that are unidirectionally or randomly oriented and bonded by friction, cohesion, adhesive, and / or mechanical processes, as opposed to a regular pattern of mechanically interlocked fibers; i.e., not woven or knitted. Examples of nonwovens include meltblown filaments, spunbonded continuous filament webs, carded webs, airlaid webs, and wetlaid webs. Suitable bonding methods include thermal bonding, chemical or solvent bonding, resin bonding, mechanical needling, hydraulic needling, and stitch bonding. Suitable articles made from polymeric materials include geotextiles, roofing materials, cables, films, filtration media, filters, diapers, sanitary napkins, panty liners, adult incontinence products, protective clothing, surgical drapes, surgical gowns, or surgical attire. [Example]

[0159] Unless otherwise indicated, all parts and percentages are by weight. Weight percent (wt %) is based on the total composition, excluding volatile materials, unless otherwise indicated.

[0160] HPT-1: phenol, 2-[4,6-bis([1,1'-biphenyl]-4-yl)-1,3,5-triazin-2-yl]-5-[(ethylhexyl)oxy] HPT-2: phenol, 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-hexyloxy HPT-3: 2-[4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin-2-yl]-5-(octyloxy)phenol HPT-4: 5-[(2-ethylhexyl)oxy]-2-(4-{4-[(2-ethylhexyl)oxy]-2-hydroxyphenyl}-6-(4- (Methoxyphenyl)-1,3,5-triazin-2-yl)phenol

[0161] UVA-1: Phenol, 2,2'-methylene-bis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3 tetramethylbutyl)) UVA-2: 2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol UVA-4: Methanone, [2-hydroxy-4-(octyloxy)phenyl]phenyl UVA-8: 3,5-di-t-butyl-4-hydroxybenzoic acid, n-hexadecyl ester UVA-9: 1,3-bis-((2'-cyano-3',3'-diphenylacryloyl)oxy)-2,2-bis-(((2'-cyano-3',3'-diphenylacryloyl)oxy)methyl)-propane UVA-14: 2,2'-(1,4-phenylene)bis[4H-3,1-benzoxazin-4-one] UVA-15: Ethanediamide, N-(2-ethoxyphenyl)-N'-(2-ethylphenyl)

[0162] Process for making PET fiber The additives (all in powder form or, if not in powder form, ground on a laboratory scale to obtain powder form) were dry blended with polyethylene terephthalate (Invista® 4048, having an intrinsic viscosity of 0.645 (1% solution in dichloroacetic acid)) and less than 1.1% by weight diethylene glycol (also pre-ground to a powder in a high-speed mixer at 3000 rpm for 2 minutes) to obtain the formulation. Additive levels are reported in weight % based on the weight of PET.

[0163] The mixture was pre-dried in a vacuum oven at 120 °C for 8 h. The moisture level after pre-drying, as measured by Karl Fischer titration, was less than 0.005%.

[0164] The dry blends were melt-extruded into pellets in a Collin co-rotating twin-screw extruder with a screw diameter of 25 mm and a length-to-diameter ratio of 42 (Tables 1-3) and a Berstorff co-rotating twin-screw extruder with a screw diameter of 25 mm and a length-to-diameter ratio of 47 (Tables 4-5), respectively. The screw rotation speed was 160 rpm, the extruder temperature was set at 260°C, and the melt temperature was 270°C. The extrudate was cooled in water directly after leaving the extruder nozzle. The extrudate was pelletized under air. Pellets were obtained.

[0165] The pellets were pre-dried and recrystallized in a vacuum oven at 160° C. for 2 hours and in a second step at 110° C. for another 2 hours.

[0166] The pre-dried and recrystallized pellets were then melt-spun in a melt spinner. Fibers were spun at 290°C under nitrogen through a Busschaert Spinboy II with a fiber diameter of 40 filaments at 4.5 dpf. The draw ratio was 1:3.2.

[0167] Weathering exposure test The PET fibers were then wound onto a PMMA plaque with one layer of parallel PET fibers parallel to one another. The wound PET fibers were then exposed to long-term accelerated weathering tests in an Atlas xenon weather meter using parameters set out in DIN EN ISO 105 B04 and DIN EN ISO 105 B06. Each title in the table below indicates which weathering exposure was used. Measurements were taken at various times and are shown in the table below in hours.

[0168] Tensile Strength Test The unexposed and exposed PET fibers were conditioned for 48 hours at room temperature and 55% relative humidity, and then subjected to tensile strength tests on one yarn. The tensile tests were performed at a travel speed of 100 mm / min. The retained tenacity [%] and the retained elongation [%] over the weathering exposure (either DIN EN ISO105 B04 or DIN EN ISO105 B06) were recorded. The higher the retention over time, the better.

[0169] Examples 1 to 7 All PET fibers tested in this section (Tables 1-3) contained a base stabilizer consisting of 0.02% pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) and 0.2% bis(2,4-dicumylphenyl)pentaerythritol diphosphite.

[0170] [Table 1]

[0171] The above results demonstrate significantly higher retained toughness for PET fibers stabilized with inventive examples containing a combination of one stabilizer and a triazine UV absorber.

[0172] [Table 2]

[0173] The above results demonstrated significantly higher retained toughness for PET fibers stabilized with inventive examples containing a combination of one benzotriazole UV absorber and one triazine UV absorber.

[0174] [Table 3]

[0175] The above results demonstrated significantly higher retained toughness for PET fibers stabilized with inventive examples containing a combination of one benzotriazole UV absorber or one benzophenone UV absorber with one triazine UV absorber.

[0176] Examples 8 to 27 All PET fibers tested in this section (Tables 4-6) contained a base stabilizer consisting of 0.02% pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) and 0.08% bis-(2,4-di-tert-butylphenol)pentaerythritol diphosphite.

[0177] [Table 4]

[0178] The above results demonstrated significantly higher retained toughness for PET fibers stabilized with inventive examples containing a combination of one non-triazine UV absorber and one triazine UV absorber, or a combination of one non-triazine UV absorber and two triazine UV absorbers.

[0179] [Table 5]

[0180] The above results demonstrated significantly higher retained toughness for PET fibers stabilized with inventive examples containing a combination of one non-triazine UV absorber and one triazine UV absorber, or a combination of one non-triazine UV absorber and two triazine UV absorbers.

[0181] [Table 6]

[0182] The above results demonstrated significantly higher retained toughness for PET fibers stabilized with inventive examples containing a combination of one non-triazine UV absorber and one triazine UV absorber, or a combination of one non-triazine UV absorber and two triazine UV absorbers.

Claims

1. A polyester material; a) at least one compound of formula (A) 【Chemistry 1】 [In the formula, E １ is hydrogen; C １ ~C １８ Alkyl; —OH, C ２ ~C １８ Alkenyloxy, —C(O)OX １ and -OC(O)X ２ (where X １ and X ２ are independently １ ~C １８ C substituted with one, two or three groups selected from the group consisting of alkyl １ ~C １８ Alkyl; C interrupted by oxygen ３ ~C ５０ Alkyl; C interrupted by oxygen ３ ~C ５０ hydroxyalkyl; or Formula (P) 【Chemistry 2】 wherein R, R′, and R″ are independently C １ ~C １８ alkylene), b is an integer ranging from 1 to 3; E ２ is hydrogen or hydroxyl, E ３ , E ４ , E ５ , and E ６ are independently hydrogen, hydroxyl, C １ ~C １８ Alkyl, substituted or unsubstituted C １ ~C １８ Alkoxy, phenyl, one, two or three C １ ~C ４ Phenyl substituted with alkyl, or a group represented by formula (Q) 【Transformation 3】 wherein T and U are, independently of one another, linear or branched C １ ~C １８ alkyl), E ７ are each independently hydrogen or C １ ~C ８ wherein the formula is alkyl; b) at least one UV absorber; and A composition comprising:

2. The composition of claim 1 , wherein the polyester material is present as a fiber or a film.

3. 3. The composition of claim 1 or 2, wherein the polyester material is present as a fiber.

4. 4. The composition of claim 1 or 3, wherein the polyester material is a homo- or copolyester derived from an aliphatic, cycloaliphatic, or aromatic dicarboxylic acid and a diol, or from a hydroxycarboxylic acid.

5. 5. The composition of claim 1 or 4, wherein the polyester material is polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polylactic acid (PLA), polycyclohexylene dimethylene terephthalate (PCT), polyethylene naphthalate (PEN), polytrimethylene terephthalate (PTT), polyethylene furanoate (PEF), or a corresponding copolymer or blend.

6. The at least one compound of formula (A) is selected from the group consisting of formulas (A-1), (A-2), (A-3) and (A-4): 【Chemistry 4】 The composition of claim 1 or 5, wherein the composition is selected from the group consisting of:

7. 7. The composition of any one of claims 1 to 6, wherein the UV absorber is selected from the group consisting of 2-(2'-hydroxyphenyl)benzotriazoles, 2-hydroxybenzophenones, esters of substituted and unsubstituted benzoic acids, cyanoacrylates, benzoxazinones, formamidines, oxanilides, malonates, and mixtures thereof.

8. The UV absorber is represented by the formula (1) to (17): 【Transformation 5】 【Transformation 6】 【Transformation 7】 8. The composition according to claim 1, wherein the UV absorber is selected from the group consisting of:

9. 9. The composition of any one of claims 1 to 8, wherein the UV absorber is selected from formulas (1), (2), (4), (8), (9), (14) and (15).

10. 9. The composition according to any one of claims 1 to 8, wherein the UV absorber is selected from UV absorbers of formula (2), (9), (14) and (15).

11. The composition according to any one of claims 1 to 10, wherein the weight ratio of the compound of formula (A) to the UV absorber ranges from 2:1 to 1:

20.

12. The composition of any one of claims 1 to 10, wherein the weight ratio of the compound of formula (A) to the UV absorber ranges from 1.5:1 to 1:

12.

13. 13. The composition of any one of claims 1 to 12, wherein the UV absorber is of formula (2), and the compound of formula (A) is selected from formulas (A-1), (A-2), and (A-3).

14. 13. The composition of any one of claims 1 to 12, wherein the UV absorber is of formula (9), and the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3), and (A-4).

15. 13. The composition of any one of claims 1 to 12, wherein the UV absorber is of formula (14), and the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3), and (A-4).

16. 13. The composition of any one of claims 1 to 12, wherein the UV absorber is of formula (15), and the compound of formula (A) is selected from formulas (A-1), (A-2), (A-3), and (A-4).

17. 17. Use of a composition comprising at least one compound of formula (A) according to any one of claims 1 to 16 and at least one UV absorber according to any one of claims 1 to 16 for increasing the stability of polyester materials exposed to light.

18. 18. A process for preparing a composition according to any one of claims 1 to 17, comprising contacting said polyester material, said at least one compound of formula (A), and said at least one UV absorber.

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