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AU-2023277700-A1 - POLYCARBONATE COMPOSITION CONTAINING COMBINATION OF HYDROXYPHENYL TRIAZINES AND UV ABSORBERS

AU2023277700A1AU 2023277700 A1AU2023277700 A1AU 2023277700A1AU-2023277700-A1

Abstract

Polycarbonate composition containing combination of hydroxyphenyl triazines and UV absorbers The present invention relates to a composition comprising a polycarbonate, at least one compound of formula (A), and at least one UV absorber, other than the compound of formula (A). Further, the present invention relates to an additive mixture comprising at least one compound of formula (A), and at least one UV absorber. The present invention also relates to the use of the additive mixture for enhancing optical properties of the molded or extruded articles, including multilayered articles.

Inventors

  • WEYLAND TANIA
  • HERBST HEINZ
  • MUELLER DANIEL
  • ESPINOS ARIZTI JORGE
  • GERSTER MICHÈLE

Assignees

  • BASF SE

Dates

Publication Date
20241205
Application Date
20230519
Priority Date
20230519

Claims (20)

  1. 1. A composition comprising: i. a polycarbonate in an amount in the range of 90 to 99.9 wt% based on the total weight of the composition; ii. at least one compound of formula (A) selected from the formulae (A-1), (A-2), (A- 3), (A-4), (A-5), (A-6), or (A-7) in an amount in the range of 0.02 to 0.8 wt% based on the total weight of the composition,
  2. (A-2) (A-7), and iii. at least one UV absorber, other than the compound of formula (A), in an amount in the range of 0.4 to 2.5 wt% based on the total weight of the composition. 2. The composition according to claim 1, wherein the polycarbonate is selected from ho- mopolycarbonates, copolycarbonates, thermoplastic polyester carbonates, polycar- bonate/acrylonitrile-butadiene-styrene terpolymer blend, thermoplastic alloy of polycar- bonate/acrylic-styrene-acrylonitrile terpolymer, thermoplastic alloy blend of polycar- bonate/polybutylene terephthalate, thermoplastic alloy of polycarbonate/polyethylene terephthalate, or thermoplastic alloy of polycarbonate, and styrene-acrylonitrile.
  3. 3. The composition according to claim 1, wherein the UV absorber is selected from 2-(2'- hydroxyphenyl) benzotriazole, 2-hydroxybenzophenone, 2-(2-hydroxyphenyl)-1,3,5-tria- zine, cyanoacrylate, oxanilide, benzoxazinone, esters of substituted and unsubstituted benzoic acid, or mixtures of two or more thereof.
  4. 4. The composition according to claim 3, wherein 2-(2'-hydroxyphenyl) benzotriazole is se- lected from 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-tetramethlybutyl) phenyl) benzotriazole, 2- (3',5'-di-tert-buty I -2'- hydroxy p he nyl) -5-chloro -benzotriazole, 2- (3'-tert- butyl -2' -hydroxy-5' -methyl phe- nyl) -5-chloro -benzotriazole, 2 -(3'-sec- butyl -5'-tert- butyl -2' -hydroxyphenyl) benzotri - azole, 2-(2'-hydroxy-4'-octyloxyphenyl)benzotriazole, 2-(3',5'-di-tert-amyl-2'-hydrox- y phenyl) benzotriazole, 2 -(3', 5'- bis- (α, α-dimethylbenzyl) -2' -hydroxyphenyl) benzotri - azole, 2- (3' -tert- butyl -2' -hydroxy-5' -(2 -octyl oxycarbonylethyl) phenyl) -5-chloro -ben- zotri azole, 2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)-carbonylethyl]-2'-hydroxyphenyl)- 5-chloro -benzotriazole, 2 -(3'-tert- butyl -2' -hydroxy-5' -(2 -methoxy carbonyl ethyl) phe- nyl) -5-chloro -benzotriazole, 2 -(3'-tert- butyl -2'- hydroxy-5'- (2- methoxy carbon- yl ethyl) phenyl) benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonyl- ethyl) phenyl) benzotriazole, 2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)carbonylethyl]-2'- hydroxy phenyl) benzotriazole, 2- (3'-dodecy I -2'- hydroxy-5'- methyl phenyl) benzotria- zole, 2 -(3'-tert- butyl -2'- hydroxy-5'- (2- isooctyl oxy carbonyl ethyl) phenyl benzotriazole, 2,2'- m ethy I e ne- bi s [4- (1,1,3,3-tetramethlybutyl) -6- benzotriazole -2 -ylp he no I]; the transesterification product of 2-[3'-tert-butyl-5'-(2-methoxycarbonylethyl)-2'-hy- droxyphenyl] -2H-benzotriazole with polyethylene glycol 300; , where R = 3'-tert-butyl-4'-hydroxy-5'-2H-benzotri- azol -2-y I phenyl , 2- [2'- hydroxy-3'- (α, α-dimethylbenzyl) -5' -(1,1, 3,3 -tetramethlybutyl) - phenyl] benzotriazole, 2- [2'- hydroxy-3'- (1,1, 3,3 -tetramethlybutyl) -5'- (α, α-di me- thylbenzyl)-phenyl] benzotriazole, or mixtures of two or more thereof.
  5. 5. The composition according to claim 3 or claim 4, wherein 2-(2'-hydroxyphenyl) benzotri- azole is selected from 2-(2'-hydroxy-5'-methylphenyl)-benzotriazole, 2,2'-methylene- bis [4- (1,1,3,3-tetramethlybutyl) -6- benzotriazole -2 -ylp he no I], 2-(3',5'-bis-(a,a- di methyl benzyl) -2' -hydroxyphenyl) benzotriazole, 2- (3' -tert- butyl -2'- hydroxy-5' - methylphenyl)-5-chloro-benzotriazole, or mixtures thereof.
  6. 6. The composition according to claim 3, wherein 2-hydroxybenzophenone is selected from 2- hydroxy-4-hydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4- octy I oxybenzophenone, 2-hydroxy-4-decyloxybenzophenone, 2-hydroxy-4-do- decy I oxybenzophenone, 2- hydroxy-4- benzyloxybenzophenone, 2- hydroxy-4, 2', 4'-trihy- droxybenzophenone, 2-hydroxy-2'-hydroxy-4,4'-dim ethoxybenzophenone derivatives, 1,4-bis(4-benzoyl-3-hydroxyphenoxy)-butane, or mixtures of two or more thereof.
  7. 7. The composition according to claim 3, wherein 2-(2-hydroxyphenyl)-1, 3, 5-triazine is selected from, other than the compounds of formula A, 2,4,6-tris(2-hydroxy-4-octyloxy- phenyl)-1,3,5-triazine, 2,4-bis(2-hydroxy-4-propyloxyphenyl)-6-(2,4-dimethylphenyl)- 1,3, 5-triazine, 2- (2-hydroxy-4-octyloxyphenyl)-4,6-bis(4-methyl phenyl)- 1,3, 5-triazine, 2- (2- hydroxy-4-dodecyloxy phenyl) -4, 6-bis (2, 4-dimethy I phenyl) -1,3, 5-triazine, 2-(2-hy- droxy-4-tridecyloxyphenyl)-4, 6- bis (2, 4-dimethy I phenyl) -1,3, 5-triazine, 2-[2-hydroxy-4- (2-hydroxy-3-butyloxy propoxy) phenyl] -4, 6-bis (2, 4-dimethy I) -1, 3, 5-triazine, 2-[2-hy- d roxy-4-(2-hydroxy-3-octyloxy propyl oxy) phenyl] -4,6-bis (2, 4-dimethy I)- 1,3, 5-triazine, 2- [4-(dodecyloxy/tridecyloxy-2-hydroxypropoxy)-2-hydroxyphenyl]-4,6-bis(2,4-dime- thy I phenyl) -1,3, 5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-dodecyloxypropoxy)phenyl]-4,6- bis (2, 4-dimethy I phenyl) -1,3, 5-triazine, 2-(2-hydroxy-4-methoxyphenyl)-4,6-diphenyl- 1,3, 5-triazine, 2, 4, 6-tris [2- hydroxy-4-(3-butoxy-2- hydroxy propoxy) phenyl] -1,3, 5-triazine, 2- (2-hydroxy phenyl) -4- (4-methoxy phenyl) -6-phenyl- 1,3, 5-triazine, 2-{2-hydroxy-4-[3- (2-ethy I hexy I- 1-oxy) -2- hydroxy propyl oxy] pheny l}-4, 6- bis (2, 4-dimethy I phenyl) -1, 3, 5-tri- azine, 2, 4- bis (4- [2-ethy I hexy I oxy] -2- hydroxy phenyl) -6- (4-methoxy phenyl) -1, 3, 5-tria- zine, 2- [2- Hydroxy-4- [3- (2-ethy I hexy I -1-oxy) -2- hydroxy propyloxy] phenyl] -4, 6- bis (2, 4- dimethy I phenyl) -1,3, 5-triazine, 5-Butoxy-2-[4-(4-butoxy-2-hydroxyphenyl)-6-(2,4- dibutoxyphenyl)- 1,3,5-triazin-2-yl] phenol, 2-[4-[2-Hydroxy-3-tridecyloxypropyl]oxy]-2- hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1, 3, 5-triazine and 2-[4-[2-hydroxy- 3- d idecyloxy propyl] oxy] -2- hydroxy phenyl] -4, 6— bis(2, 4- dimethyl phenyl) -1,3, 5-triazine, Propanoic acid, 2- (4- (4,6-bis ((1,1'- biphenyl) -4-yl)- 1,3,5-triazin-2-y I) -3- hydroxy phe- noxy)-, isooctyl ester, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, or mixtures of two or more thereof.
  8. 8. The composition according to claim 3, wherein the cyanoacrylate UV absorber is se- lected from ethyl α-cyano-β,β- diphenylacrylate, isooctyl α-cyano-β,β- diphenylacrylate, neopentyl tetra(α-cyano-β,β- diphenylacrylate), pentaerythritol tetrakis(2-cyano-3,3-di- phenylacrylate), ethyl 2-cyano-3,3-diphenylacrylate, (2-ethylhexyl)-2-cyano-3,3-diphe- nyl acrylate, or mixtures of two or more thereof.
  9. 9. The composition according to claim 3 or claim 8, wherein the cyanoacrylate UV ab- sorber is pentaerythritol tetrakis(2-cyano-3,3-diphenylacrylate).
  10. 10. The composition according to claim 3, wherein the oxanilide is selected from 4,4'-di- octyloxyoxanilide, 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-dimethyla- minopropyl)oxamide, 2-ethoxy-5-tert-butyl-2'-ethoxanilide and its mixture with 2-eth- oxy-2'-ethyl-5,4'-di-tert-butoxanilide, mixtures of o- and p-methoxy-disubstituted oxan- ilides, mixtures of o- and p-ethoxy-disubstituted oxanilides, or mixtures of two or more thereof.
  11. 11. The composition according to one or more of claims 1 to 10, wherein the composition further comprises at least one antioxidant.
  12. 12. The composition according to claim 11, wherein the antioxidant is selected from phenolic antioxidant, organophosphorus stabilizer, or mixtures thereof.
  13. 13. The composition according to claim 11 or claim 12, wherein the phenolic antioxidant is selected from octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 1,3,5- tris (3,5 -di -tert- butyl -4- hydroxy benzyl) -2, 4,6 -tri methyl benzene, N, N'- bis (3,5-di -tert- butyl -4- hydroxyphenyl propio nyl) hexa methyl ene-diamide, 1,3,5-tris [3, 5 -di -tert- bu- tyl -4- hydroxy benzyl] isocyan urate, 2, 4-d i-t-buty I pheny 1-3, 5-di-t-buty 1-4- hydroxy benzo- ate, bis (1,2,2, 6,6- penta methyl pi peridi n -4-yl) -butyl (3,5 -di -t- butyl -4- hydroxy ben - zyl)malonate), blend of octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate and tris[2,4-di-tert- butyl phe nyl] phosphite, or mixtures of two or more thereof.
  14. 14. The composition according to one or more of claims 11 to 13, wherein the phenolic anti- oxidant is selected from octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, or blend of octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate and tris[2,4- di -tert-butyl phenyl] phosphite.
  15. 15. The composition according to claim 12, wherein the organophosphorus stabilizer is se- lected from organic phosphite, organic phosphonite, organic phosphine, or mixtures of two or more thereof.
  16. 16. The composition according to claim 15, wherein the organic phosphite is tris(2,4-di-tert- butylphenyl) phosphite.
  17. 17. The composition according to claim 15, wherein the organic phosphine is tri- phenylphosphine.
  18. 18. The composition according to one or more of claims 1 to 17, wherein the weight ratio of the total amount of compounds of formula (A) present in the composition to the total amount of UV absorber, other than the compound of formula (A), present in the compo- sition is in the range of 1:50 to 50:1.
  19. 19. The composition according to one or more of claims 1 to 18, wherein the composition further comprises at least one sterically hindered amine light stabilizer.
  20. 20. The composition according to claim 19, wherein the sterically hindered amine light sta- bilizer is selected from carbonic acid bis(l-undecyloxy-2,2,6,6-tetramethyl-4-pi- peridyl)ester, bis (2, 2,6,6-tetra methyl -4- piperidyl) sebacate, bis (2,2, 6,6-tetra methy I - 4- piperidyl) succinate, bis (1,2,2, 6,6- penta methyl -4- piperidyl) sebacate, bis(1-oc- ty I oxy-2,2, 6,6-tetra methyl -4- piperidyl) sebacate, bis (1,2,2, 6,6- penta methyl -4- pi- peridyl) n-butyl-3,5-di-tert-butyl-4-hydroxybenzylmalonate, poly(4-hydroxy-2,2,6,6- tetramethyl-1-piperidineethanol-alt-l,4-butanedioic acid), linear or cyclic conden- sates of N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl) hexamethylenediamine and 4-tert- octyla mi no -2, 6-dichloro-1, 3, 5-triazine, tris (2,2, 6,6-tetra methyl -4- piperidyl) nitrilotri- acetate, tetra kis (2,2, 6,6-tetra methyl -4- piperidyl) -1,2, 3, 4- butanetetra carboxy late, 1, 1'- (1,2-etha nediy I) -bis (3,3, 5,5-tetra methyl pi perazi none), 4-benzoyl-2,2,6,6-tetra- m ethyl pi peridine, 4-steary I oxy-2,2, 6,6-tetra methyl pi peridine, bis(l, 2, 2, 6, 6- penta me- thyl piperidyl) -2- n- butyl -2- (2- hydroxy-3, 5 -di -tert- butyl benzyl) ma I onate, 3-n-octyl- 7,7, 9,9-tetramethy I -1,3,8-triazas pi ro [4.5] decane-2, 4-dione, bi s(1 -octyl oxy-2,2, 6,6- tetra methyl piperidyl) sebacate, bis (1 -octyl oxy-2,2, 6,6-tetra methyl piperidyl)succi n- ate, linear or cyclic condensates of N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl) hexa- methylenediamine and 4-morpholino-2,6-dichloro-l, 3, 5-triazine, the condensate of 2-ch Io ro-4,6-bis(4-n-buty la mi no-2,2, 6,6-tetra methyl pi peridy I) -1,3,5 -triazine and 1,2- bis(3-aminopropylamino)ethane, the condensate of 2-chloro-4,6-di-(4-n-butyla- mi no- 1,2, 2, 6,6- penta methyl pi peridy I) -1,3,5 -triazine and 1,2 -bis (3 -aminop ropy la- mi no) ethane, 8 -acetyl -3-dodecy I -7,7, 9,9-tetramethy I -1,3,8-triazas pi ro [4.5] deca ne- 2,4-dione, 3-dodecy 1-1- (2,2, 6,6-tetra methyl -4- pi peridy I) 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-tetra methyl -4- piperidyl) hexa methylenediamine and 4-cyclohexylamino- 2.6-dich Io ro-1,3,5 -triazi ne, a condensate of 1,2-bis (3-aminopropylamino)ethane and 2.4.6-trichloro-1,3,5 -triazine and 4-butylamino-2,2,6,6-tetramethylpiperidine; a con- densate of 1,6-hexanediamine and 2,4,6-trichloro-1,3,5 -triazine as well as N,N-dibu- tylamine and 4-butylamino-2,2,6,6-tetramethylpiperidine; N-(2,2,6,6-tetramethyl-4- piperidyl)-n -dodecylsuccinimide, N-(1,2,2,6,6-pentamethyl-4-piperidyl)-n-do- decylsuccinimide, 2-undecyl-7,7,9,9-tetramethyl-l-oxa-3,8-diaza-4-oxo- spiro[4,5]decane, a reaction product of 7,7,9,9-tetramethyl-2-cycloundecyl-l-oxa- 3,8-diaza-4-oxospiro-[4,5]decane and epichlorohydrin, 1,1- bis(1,2,2,6,6-pentame- thyl-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-methox- ymethylenemalonic acid with 1,2,2,6,6-pentamethyl-4-hydroxypiperidine, po ly [m ethy Ip ropy I -3-oxy-4- (2, 2,6,6-tetra methyl -4- piperidyl)] si I oxane, a reaction product of maleic acid anhydride-a-olefin copolymer with 2,2,6,6-tetramethyl-4-ami- nopiperidine or 1,2,2,6,6-pentamethyl-4-aminopiperidine, 2,4-bis[N-(l-cyclohex- yl oxy-2, 2,6, 6-tetra methyl pipe rid ine-4-yl)-N-butyl amino] -6- (2- hydroxyethyl) amino- 1,3,5-triazine, 5-(2-ethylhexanoyl)oxymethyl-3,3,5-trimethyl-2-morpholinone, the re- action product of 2,4-bis[(1-cyclohexyloxy-2,2,6,6-piperidine-4-yl)butylamino]-6- chloro-s-triazine with N,N’-bis(3-aminopropyl)ethylenediamine), 1,3,5 -tris(N -cyclo- hexyl - N -(2, 2, 6, 6 -tetra methyl piperazi ne-3-o ne-4-yl)a m ino) -s-triazine, 1,3,5 -tris(N- cyclohexyl-N-(1,2,2,6,6-pentamethylpiperazine-3-one-4-yl)amino)-s-triazine, N,N'- bis (2, 2,6,6-tetra m ethy I -4- pi pe ridy I) -N,N '-diformyl hexa methylenediamine, mixture of bis (1,2, 2,6,6- penta methyl -4- piperidyl) sebacate and 1 -(methyl) -8- (1,2,2, 6,6 -pen - tamethyl-4-piperidyl)sebacate, mixture of 1,5,8,12-Tetrakis[4,6-bis(N-butyl-N- 1.2.2.6.6- penta methyl -4- pipe ridy lam ino) -1,3,5-triazin -2-yl] -1,5,8, 12-tetraazadodec- ane and Po ly (4- hydroxy-2, 2, 6, 6-tetra methy 1-1- piperidineethanol -alt-1, 4- butanedioic acid), Bis(1,2,2,6,6-pentamethyl-4-piperidinyl)-2-butyl-2-(4-hydroxy-3,5-di-tert.bu- tylbenzyl)propanedioate, mixture of 1-(2-hydroxy-2-methylpropoxy)-4-octadeca- noy I oxy-2, 2, 6, 6-tetra methy I pi peridine and 1,5,8, 12-Tetrakis [4,6- bis(N- butyl -N- 1,2, 2, 6,6- penta methyl -4-piperidy lam ino) -1,3,5-triazin -2-yl] -1,5,8, 12-tetraazadodec- ane, 1,6-Hexanediamine, N 1 , N 6 -bis(2,2,6,6-tetra methyl-4-pi peridinyl) -, polymers with morpholine-2,4,6-trichloro-1,3,5-triazine reaction products, methylated. 1,6- Hexanediamine, N 1 , N 6 -bis(2, 2,6, 6-tetra methyl -4- pi peridinyl) -, polymer with 2,4-di- chloro-6-(4-morpholinyl)-1 ,3,5-triazine, mixture of 1,6-Hexanediamine, N 1 , N 6 - bis (2, 2, 6, 6-tetra m ethy I -4- pi pe rid i nyl) - , polymers with morpholine-2,4,6-trichloro- 1,3,5-triazine reaction products, methylated and 2-(4,6-Bis-(2,4-dimethylphenyl)- 1,3,5-triazin-2-yl)-5-(octyloxy)-phenol, mixture of 1,6-Hexanediamine, N 1 , N 6 - bis (2, 2, 6, 6-tetra m ethy I -4- pi pe rid i nyl) - , polymer with 2,4-dichloro-6-(4-morpholinyl)- 1,3,5 -tri azine and 2- (4,6- B is- (2, 4-di methylphenyl ) -1,3,5-triazin -2-yl) -5 -(octyl oxy) - phenol, or mixtures of two or more thereof.

Description

Polycarbonate composition containing combination of hydroxyphenyl triazines and UV absorbers Field of the invention The present invention relates to a composition comprising a polycarbonate, at least one compound of formula (A), and at least one UV absorber, other than the compound of formula (A). Further, the present invention relates to an additive mixture comprising at least one compound of formula (A), and at least one UV absorber. The present invention also relates to the use of the additive mixture for enhancing optical properties of the molded or extruded articles, including multilayered articles. Background of the invention Polycarbonate molded or extruded articles are known in the literature and are prepared for a large number of applications. Theese articles are produced e.g. by extruding compositions that contain polycarbonate. Coextrusion with other compositions that contain polycarbonate and, in addition, a relatively high proportion of UV absorbers may optionally take place. However, polycarbonate has the disadvantage that it is not itself inherently UV-stable. To prevent the detrimental effects of UV light on the articles prepared from the polycarbonate, different additives for eg. hindered amine light stabilizers, UV absorbers, etc are used. However, these additives or mixture of these additives are not able to improve the stability of the polycarbonate molded or extruded articles to a greater extent. Thus, an object of the present invention is to overcome the above-mentioned drawbacks and to provide a polycarbonate comprising composition with improved optical properties. It is especially desirable to improve the optical properties of polycarbonate sheets and polycarbonate articles. Another object of the present invention is to provide a polycarbonate composition that can be used to prepare polycarbonate articles or sheets with improves optical properties, especially Delta E and Yellowness index. Yet another object of the present invention is to provide the composition that improves the weathering resistance of the polycarbonate sheets or articles. Yet another object of the present invention is to provide an additive mixture which can improve the optical properties of polycarbonate when incorporated into polycarbonate. Summary of the invention Surprisingly, it has been found that the additive mixture of the presently claimed invention i.e., combination of at least one compound of formula (A), at least one UV absorber, other than the compound of formula (A), and a polycarbonate improves optical properties of the polycarbonate sheets or polycarbonate articles, which is exposed to light, and thus prolongs the lifetime of the polycarbonate sheets or polycarbonate articles and that results in economic value. Thus, in one aspect, the presently claimed invention is directed to a composition comprising: i. a polycarbonate in an amount in the range of 90 to 99.9 wt% based on the total weight of the composition; ii. at least one compound of formula (A) selected from the formulae (A-1), (A-2), (A- 3), (A-4), (A-5), (A-6), or (A-7), in an amount in the range of 0.02 to 0.8 wt% based on the total weight of the composition, (A-7), and iii. at least one UV absorber, other than the compound of formula (A), in an amount in the range of 0.4 to 2.5 wt% based on the total weight of the composition. In another aspect, the presently claimed invention is directed to an additive mixture compris- ing I. at least one compound of formula (A) as defined above; and II. at least one UV absorber, other than the compound of formula (A). In another aspect, the presently claimed invention is directed to an article comprising the composition, as defined above. In yet another aspect, the presently claimed invention is directed to use of the additive mixture, as defined above, for enhancing optical properties of the molded or extruded articles, including multilayered articles. Detailed description of the invention Before the present compositions and formulations of the invention are described, it is to be under-stood that this invention is not limited to particular compositions and formulations described, since such compositions and formulation may, of course, vary. It is also to be understood that the terminology used herein is not intended to be limiting, since the scope of the presently claimed invention will be limited only by the appended claims. If hereinafter a group is defined to comprise at least a certain number of embodiments, this is meant to also encompass a group which preferably consists of these embodiments only. Furthermore, the terms "first", "second", "third" or "(a)", "(b)", "(c)", "(d)" etc. and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of t