Stabilizing compositions for polymeric materials

Abstract

A stabilized polymer composition comprising an organic polymeric material to be stabilized and a stabilizer composition comprising: at least one inorganic UV blocker, at least on hindered amine light stabilizer compounds, at least on hindered phenol antioxidant compound, at least one phosphite or phosphonite compound, and at least one thioester, wherein the stabilizer composition provides effective ultraviolet (UV) light stability, thermal stability and gas fade resistance to the stabilized polymer even when a hindered hydroxybenzoate, an organic UV absorber, an acid scavenger and / or a dialkylhydroxylamine are not present.

Description

STABILIZING COMPOSITIONS FOR POLYMERIC MATERIALSFIELD OF INVENTION

[0001] The instant invention relates to stabilizing compositions. In particular, the instant invention relates to compositions that stabilize materials against ultraviolet light degradation and thermal degradation.BACKGROUND

[0002] Exposure to sunlight and other sources of ultraviolet (UV) radiation (also referred to asUV light) is known to cause degradation of a wide variety of materials. For example, polymeric materials such as plastics often discolor, lose gloss and / or become brittle as a result of prolonged exposure to UV light due primarily to a reduction in the molecular weight of the polymer. Accordingly, a large body of art has been developed directed towards compositions such as UV light absorbers and stabilizers, which are capable of inhibiting such degradation in polymeric articles.

[0003] Exposure to heat is also known to cause degradation of materials, especially polymeric materials. While compositions that reduce or prevent degradation caused by heat have been developed, combining these compositions with UV light stabilizer systems has not always yielded the desired result since the UV light stabilization properties are often hindered or completely relinquished (z.e., antagonistic) when combined with the heat stabilizer composition(s). Recent US patent 9,725,579 discloses polymeric compositions for stabilizing polymeric materials against UV and thermal degradation. In addition to thermal stability and light stability, it is desirable for polymeric materials to have sufficient gas fade resistance needed to maintain color properties during storage and end-use application. Gas fading is known in the industry as a discoloration resulting from the exposure of polymeric articles to an atmosphere containing oxides of nitrogen. Accordingly, there remains an unmet need in the market for a stabilizer composition that can protect materials from gas fading while also protecting degradation due to both UV light and thermal exposure. This invention is believed to be an answer to the foregoing need.SUMMARY

[0004] In one aspect, the invention is directed to a stabilized polymer composition having effective ultraviolet (UV) light stability, thermal stability and gas fade resistance that includes an organic polymeric material to be stabilized and a stabilizer composition comprising at least one inorganic UV blocker, at least one hindered amine light stabilizer compound; at least one hindered phenol antioxidant compound; at least one phosphite or phosphonite compound; and at least one thioester, wherein the stabilizer composition provides effective thermal and ultraviolet (UV) light stability, thermal stability and gas fade resistance to the stabilized polymer even when a hindered hydroxybenzoate, an organic UV absorber, an acid scavenger and / or a dialkylhydroxylamine are not present.

[0005] In another aspect, the invention is directed to stabilized compositions that include any of the stabilizer compositions described herein and a material to be stabilized.

[0006] In a further aspect, the invention is directed to processes for preparing the aforementioned stabilized composition wherein the material to be stabilized is combined with any of the thermal and UV light stabilizing compositions described herein.

[0007] In yet a further aspect, the invention is directed to a process for improving processability of a material selected from the group consisting of polyolefins, polyesters, polyethers, polyketones, polyamides, natural and synthetic rubbers, polyurethanes, polystyrenes, high-impact polystyrenes, polyacrylates, polymethacrylates, polyacetals, polyacrylonitriles, polybutadienes, polystyrenes, acrylonitrile-butadiene-styrene, styrene acrylonitrile, acrylate styrene acrylonitrile, cellulosic acetate butyrate, cellulosic polymers, polyimides, polyamideimides, polyetherimides, polyphenylsulfides, polyphenyloxidepolysulfones, polyethersulfones, polyvinylchlorides, polycarbonates, polyketones, aliphatic polyketones, thermoplastic olefins, aminoresin cross-linked polyacrylates and polyesters, polyisocyanate cross-linked polyesters and polyacrylates, phenol / formaldehyde, urea / formaldehyde and melamine / formaldehyde resins, drying and non-drying alkyd resins, alkyd resins, polyester resins, acrylate resins cross-linked with melamine resins, urea resins, isocyanates, isocyanurates, carbamates, and epoxy resins,cross-linked epoxy resins derived from aliphatic, cycloaliphatic, heterocyclic and aromatic glycidyl compounds, which are cross-linked with anhydrides or amines, polysiloxanes, Michael addition polymers, amines, blocked amines with activated unsaturated and methylene compounds, ketimines with activated unsaturated and methylene compounds, polyketimines in combination with unsaturated acrylic polyacetoacetate resins, polyketimines in combination with unsaturated acrylic resins, radiation curable compositions, epoxymelamine resins, organic dyes, cosmetic products, cellulose-based paper formulations, photographic film paper, fibers, waxes, inks, and blends thereof, the process comprising adding a stabilizing amount of a stabilizing composition as described herein to the material.

[0008] These and other aspects of the invention are described in more detail herein.DETAILED DESCRIPTION

[0009] As summarized above, the compositions and processes using the same that have now been discovered and disclosed herein for the first time are surprisingly useful for achieving optimal stability against thermal and UV light degradation compared to current commercially available stabilizer packages. Furthermore, the processes and compositions disclosed herein additionally (and surprisingly) provide a stabilizer package that has a low release of volatile organic compounds (VOCs), low odor and low blooming as compared to current commercially available polymer stabilizer packages.

[0010] As employed above and throughout the disclosure, the following terms and definitions are provided to assist the reader. Unless otherwise defined, all terms of art, notations and other scientific terminology used herein are intended to have the meanings commonly understood by those of skill in the chemical arts. As used herein and in the appended claims, the singular forms include plural referents unless the context clearly dictates otherwise. Additionally, as used herein and in the appended claims, the disclosure of any ranges of amounts or concentrations includes the disclosure of any amount or value in the given range.

[0011] Throughout this specification the terms and substituents retain their definitions. A comprehensive list of abbreviations utilized by organic chemists (i.e. persons of ordinary skill in the art) appears in the first issue of each volume of the Journal of Organic Chemistry. Thelist, which is typically presented in a table entitled “Standard List of Abbreviations”, is incorporated herein by reference.

[0012] The term "hydrocarbyl" is a generic term encompassing aliphatic, alicyclic and aromatic groups having an all-carbon backbone and consisting of carbon and hydrogen atoms. In certain cases, as defined herein, one or more of the carbon atoms making up the carbon backbone may be replaced or interrupted by a specified atom or group of atoms, such as by one or more heteroatom of N, O, and / or S. Examples of hydrocarbyl groups include alkyl, cycloalkyl, cycloalkenyl, carbocyclic aryl, alkenyl, alkynyl, alkylcycloalkyl, cycloalkylalkyl, cycloalkenylalkyl, and carbocyclic aralkyl, alkaryl, aralkenyl and aralkynyl groups. Such hydrocarbyl groups can also be optionally substituted by one or more substituents as defined herein. Accordingly, the chemical groups or moieties discussed in the specification and claims should be understood to include the substituted or unsubstituted forms. The examples and preferences expressed below also apply to each of the hydrocarbyl substituent groups or hydrocarbyl-containing substituent groups referred to in the various definitions of substituents for compounds of the formulas described herein unless the context indicates otherwise.

[0013] Preferred non-aromatic hydrocarbyl groups are saturated groups such as alkyl and cycloalkyl groups. Generally, and by way of example, the hydrocarbyl groups can have up to fifty carbon atoms, unless the context requires otherwise. Hydrocarbyl groups with from 1 to 30 carbon atoms are preferred. Within the sub-set of hydrocarbyl groups having 1 to 30 carbon atoms, particular examples are C1-20 hydrocarbyl groups, such as C1-12 hydrocarbyl groups (e.g. C1-6 hydrocarbyl groups or Ci-4 hydrocarbyl groups), specific examples being any individual value or combination of values selected from Ci through C30 hydrocarbyl groups.

[0014] Alkyl is intended to include linear, branched, or cyclic hydrocarbon structures and combinations thereof. Lower alkyl refers to alkyl groups of from 1 to 6 carbon atoms. Examples of lower alkyl groups include methyl, ethyl, propyl, isopropyl, butyl, s-and t-butyl and the like. Preferred alkyl groups are those of C30 or below.

[0015] Alkoxy or alkoxyalkyl refers to groups of from 1 to 20 carbon atoms of a straight, branched, cyclic configuration and combinations thereof attached to the parent structurethrough an oxygen. Examples include methoxy, ethoxy, propoxy, isopropoxy, cyclopropyloxy, cyclohexyloxy and the like.

[0016] Acyl refers to formyl and to groups of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12 carbon atoms of a straight, branched, cyclic configuration, saturated, unsaturated and aromatic and combinations thereof, attached to the parent structure through a carbonyl functionality. Examples include acetyl, benzoyl, propionyl, isobutyryl, / -butoxy carbonyl, benzyloxy carbonyl and the like. Lower-acyl refers to groups containing one to six carbons.

[0017] References to "carbocyclic" or “cycloalkyl” groups as used herein shall, unless the context indicates otherwise, include both aromatic and non-aromatic ring systems. Thus, for example, the term includes within its scope aromatic, non-aromatic, unsaturated, partially saturated and fully saturated carbocyclic ring systems. In general, such groups may be monocyclic or bicyclic and may contain, for example, 3 to 12 ring members, more usually 5 to 10 ring members. Examples of monocyclic groups are groups containing 3, 4, 5, 6, 7, and 8 ring members, more usually 3 to 7, and preferably 5 or 6 ring members. Examples of bicyclic groups are those containing 8, 9, 10, 11 and 12 ring members, and more usually 9 or 10 ring members. Examples of non-aromatic carbocycle / cycloalkyl groups include c-propyl, c-butyl, c-pentyl, c-hexyl, and the like. Examples of C7 to C10 polycyclic hydrocarbons include ring systems such as norbornyl and adamantyl.

[0018] Aryl (carbocyclic aryl) refers to a 5- or 6-membered aromatic carbocycle ring containing; a bicyclic 9- or 10-membered aromatic ring system; or a tricyclic 13- or 14- membered aromatic ring system. The aromatic 6- to 14-membered carbocyclic rings include, e.g., substituted or unsubstituted phenyl groups, benzene, naphthalene, indane, tetralin, and fluorene.

[0019] Substituted hydrocarbyl, alkyl, aryl, cycloalkyl, alkoxy, etc. refer to the specific substituent wherein up to three H atoms in each residue are replaced with alkyl, halogen, haloalkyl, hydroxy, alkoxy, carboxy, carboalkoxy (also referred to as alkoxycarbonyl), carboxamido (also referred to as alkylaminocarbonyl), cyano, carbonyl, nitro, amino, alkylamino, dialkylamino, mercapto, alkylthio, sulfoxide, sulfone, acylamino, amidino,phenyl, benzyl, halobenzyl, heteroaryl, phenoxy, benzyloxy, heteroaryloxy, benzoyl, halobenzoyl, or lower alkylhydroxy.

[0020] Stabilizer Composition

[0021] As summarized above, this invention relates to a stabilized polymer composition including an organic polymeric material to be stabilized and a stabilizer composition, the stabilizer composition comprising at least one inorganic UV blocker, at least one hindered amine light stabilizer (HALS) compound, at least one phosphite or phosphonite compound, at least one hindered phenol antioxidant compound, and at least one thioester. Together, the at least one hindered amine light stabilizer (HALS) compound, at least one phosphite or phosphonite compound, at least one hindered phenol antioxidant compound, and at least one thioester may be referred to as “organic stabilizers” or “organic stabilizer composition” which may also include other optional organic components described herein, but does not include the inorganic UV blockers and optional flame retardants.

[0022] Furthermore, the stabilizer composition disclosed herein provides effective thermal and ultraviolet (UV) light stability, thermal stability and gas fade resistance to the stabilized polymer composition even in the absence of one or more of a hindered hydroxybenzoate, an organic UV absorber, an acid scavenger and a dialkylhydroxylamine. That is, the stabilizer composition disclosed herein provides effective thermal and ultraviolet (UV) light stability, and gas fade resistance to the stabilized polymer composition without requiring the presence of a hindered hydroxybenzoate, an organic UV absorber, an acid scavenger and / or a dialkylhydroxylamine in the composition. Thus, the stabilizer compositions of the present disclosure may include fewer components and also provide the desired effect to the material being stabilized.

[0023] The at least one inorganic UV blocker includes titanium oxide, zinc oxide, cerium oxide, barium sulfate, silica, talc, carbon fiber, carbon black or any combination thereof.

[0024] The at least one hindered amine light stabilizer (HALS) compound includes a molecular fragment according to Formula (II):Formula (II) wherein R31 in Formula (II) is chosen from: hydrogen; OH; C1-C20 hydrocarbyl; -CH2CN; C1-C12 acyl; and Ci-Cis alkoxy; R38 in Formula (II) is chosen from: hydrogen; and Ci-Cs hydrocarbyl; and each of R29, R30, R32, and R33 in Formula (II) is independently chosen from C1-C20 hydrocarbyl, or R29 and R30 and / or R32 and R33 in Formula (II) taken together with the carbon to which they are attached form a C5-C10 cycloalkyl; or Formula (Ila)wherein m in Formula (Ila) is an integer from 1 to 2; R39 is chosen from: hydrogen; OH; Ci- C20 hydrocarbyl; -CH2CN; C1-C12 acyl; and Ci-Cis alkoxy; and each of G1-G4 in Formula (Ila) is independently chosen from C1-C20 hydrocarbyl.

[0025] Examples of the HALS compound include bis(2,2,6,6-tetramethylpiperidin-4-yl) sebacate; bis(2,2,6,6-tetramethylpiperidin-4-yl)succinate; bis(l, 2,2,6, 6-pentamethylpiperidin- 4-yl)sebacate; bis(l-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl)sebacate; bis(l,2,2,6,6- pentamethylpiperidin-4-yl) n-butyl 3,5-di-tert-butyl-4-hydroxybenzylmalonate; a condensate of l-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid; 2, 2,6,6- tetramethylpiperidin-4-yl stearate; 2,2,6,6-tetramethylpiperidin-4-yl dodecanate; 1, 2, 2,6,6- pentamethylpiperidin-4-yl stearate; l,2,2,6,6-pentamethylpiperidin-4-yl dodecanate; a condensate of N,N'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexamethylenediamine and 4-tert- octylamino-2,6-dichloro-l,3,5-triazine; tris(2,2,6,6-tetramethylpiperidin-4-yl)nitrilotriacetate; tetrakis(2,2,6,6-tetramethylpiperidin-4-yl)- 1,2,3,4-butanetetracarboxylate; 4- benzoyl-2,2,6,6-tetramethylpiperidine; 4-stearyloxy-2,2,6,6-tetramethylpiperidine; bis(l,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-l,3,8-triazaspiro[4.5]decan-2,4-dione; bis(l-octyloxy-2,2,6,6-tetramethylpiperidyl)sebacate; bis(l-octyloxy-2, 2,6,6- tetramethylpiperidyl)succinate; a condensate of N,N'-bis(2,2,6,6-tetramethylpiperidin-4- yl)hexamethylenediamine and 4-morpholino-2,6-dichloro-l,3,5-triazine; a condensate of N,N'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexamethylenediamine and 4-morpholino-2,6- dichloro-l,3,5-triazine, methylated; a condensate of 2-chloro-4,6-bis(4-n-butylamino-2, 2,6,6- tetramethylpiperidyl)-l,3,5-triazine and l,2-bis(3-aminopropylamino)ethane; a condensate of 2-chloro-4,6-bis(4-n-butylamino-l,2,2,6,6-pentamethylpiperidyl)-l,3,5-triazine and 1,2-bis- (3-aminopropylamino)ethane; 8-acetyl-3-dodecyl-7,7,9,9-tetramethyl-l,3,8- triazaspiro[4.5]decane-2, 4-dione; 3-dodecyl-l-(2,2,6,6-tetramethylpiperidin-4-yl)pyrrolidin-2.5-dione; 3-dodecyl-l-(l-ethanoyl-2,2,6,6-tetramethylpiperidin-4-yl)pyrrolidin-2, 5-dione; 3- dodecyl-l-(l,2,2,6,6-pentamethylpiperidin-4-yl)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-tetramethylpiperidin-4-yl)hexamethylenediamine and 4-cyclohexylamino-2,6- dichloro-l,3,5-triazine; a condensate of l,2-bis(3-aminopropylamino)ethane, 2,4,6-trichloro-1.3.5-triazine and 4-butylamino-2,2,6,6-tetramethylpiperidine; 2-undecyl-7,7,9,9-tetramethyl- l-oxa-3,8-diaza-4-oxospiro[4.5]decane; oxo-piperanzinyl-triazines; a reaction product of 7,7,9,9-tetramethyl-2-cycloundecyl-l-oxa-3,8-diaza-4-oxospiro[4.5]decane and epichlorohydrin; tetrakis(2,2,6,6-tetramethyl-4-piperidyl) butane-l,2,3,4-tetracarboxylate; 1,2,3,4-butanetetracarboxylic acid, tetrakis(l,2,2,6,6-pentamethyl-4-piperidinyl)ester; 1, 2,3,4- butanetetracarboxylic acid, l,2,2,6,6-pentamethyl-4-piperdinyl tridecyl ester; 1,2,3,4- butanetetracarboxylic acid, 2,2,6,6-tetramethyl-4-piperidinyl tridecyl ester; 1,2,3,4- butanetetracarboxylic acid, polymer with 2,2,6,6-tetramethyl-2,4,8,10-tetraoxaspiro[5.5]- undecane-3,9-diethanol,l,2,2,6,6-pentamethyl-4-piperdinyl ester; 1,2,3,4- butanetetracarboxylic acid, polymer with 2,2,6,6-tetramethyl-2,4,8,10-tetraoxaspiro[5.5]- undecane-3,9-di ethanol, 2,2,6,6-tetramethyl-4-piperdinyl ester; bis(l-undecanoxy-2, 2,6,6- tetramethylpiperidin-4-yl)carbonate; l-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethyl-4- piperdinol; l-(2-hydroxy-2-methylpropoxy)-4-octadecanoyloxy-2,2,6,6-tetramethylpiperidine; l-(4-octadecanoyloxy-2,2,6,6-tetramethylpiperidin-l-yloxy)-2- octadecanoyloxy-2-methylpropane; l-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-piperdinol; a reaction product of l-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-piperdinol and dimethyl succinate; 2,2,4,4-tetramethyl-7-oxa-3,20-diazadispiro[5.1.11 ,2]heneicosan-21-one; the ester of 2,2,6,6-tetramethyl-4-piperidinol with higher fatty acids; 3 -dodecyl- 1 -(2, 2,6,6- tetramethyl-4-piperidyl)pyrrolidine-2, 5-dione; lH-Pyrrole-2, 5-dione, 1 -octadecyl-, polymer with (l-methylethenyl)benzene and l-(2,2,6,6-tetramethyl-4-piperidinyl)-lH-pyrrole-2,5- dione; piperazinone, l,l\l"-[l,3,5-triazine-2,4,6-triyltris[(cyclohexylimino)-2,l- ethanediyl]]tris[3,3,5,5-tetramethyl-; piperazinone, l,l',l"-[l,3,5-triazine-2,4,6- triyltris[(cyclohexylimino)-2, 1 -ethanediyl] ]tris [3, 3,4,5, 5-pentamethyl-; the reaction product of 7,7,9,9-tetramethyl-2-cycloundecyl-l-oxa-3,8-diaza-4-oxospiro[4.5]decane and epichlorohydrin; the condensate of N,N'-bis(2,2,6,6-tetramethylpiperidin-4- yl)hexamethylenediamine and 4-cyclohexylamino-2,6-dichloro-l,3,5-triazine; the condensate of l,2-bis(3-aminopropylamino)ethane, 2,4,6-trichloro-l,3,5-triazine and 4-butylamino-2.2.6.6-tetramethylpiperidine; the condensate of N,N'-bis(2,2,6,6-tetramethylpiperidin-4- yl)hexamethylenediamine and 4-morpholino-2,6-dichloro-l,3,5-triazine; the condensate of 2- chloro-4,6-bis(4-n-butylamino-2,2,6,6-tetramethylpiperidyl)-l,3,5-triazine and 1 ,2-bis(3- aminopropylamino)ethane; the condensate of 2-chloro-4,6-bis(4-n-butylamino- 1,2, 2,6,6- pentamethylpiperidyl)-l,3,5-triazine and l,2-bis-(3-aminopropylamino)ethane; 2-[(2- hydroxyethyl)amino]-4,6-bis[N-(l-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4- yl)butylamino-l,3,5-triazine; propanedioic acid, [(4-methoxyphenyl)-methylene]-bis- (l,2,2,6,6-pentamethyl-4-piperidinyl) ester; tetrakis(2,2,6,6-tetramethylpiperidin-4-yl)- 1,2,3,4-butanetetracarboxylate; benzenepropanoic acid, 3,5-bis(l,l-dimethylethyl)-4- hydroxy-, l-[2-[3-[3,5-bis(l,l-dimethylethyl)-4-hydroxyphenyl]-l-oxopropoxy]ethyl]-2.2.6.6-tetramethyl-4-piperidinyl ester; N-(l-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl)-N'- dodecyloxalamide; tris(2,2,6,6-tetramethylpiperidin-4-yl) nitrilotriacetate; 1,5- dioxaspiro{5,5}undecane-3,3-dicarboxylic acid, bis(l,2,2,6,6-pentamethyl-4-piperidinyl): l,5-dioxaspiro{5,5}undecane-3,3-dicarboxylic acid, bis(2,2,6,6-tetramethyl-4-piperidinyl); the condensate of l-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid; the condensate of N,N'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexamethylenediamine and 4-tert-octylamino-2,6-dichloro-l,3,5-triazine; 1,2,3,4-butanetetracarboxylic acid, 1,2, 2, 6, 6-pentamethyl-4-piperidinyl tridecyl ester; tetrakis(2, 2,6, 6-tetramethylpiperidin-4-yl)-l, 2,3,4- butanetetracarboxylate; 1,2,3,4-butanetetracarboxylic acid, 2,2,6,6-tetramethyl-4-piperidinyl tridecyl ester; tetrakis(l,2,2,6,6-pentamethylpiperidin-4-yl)-l,2,3,4-butanetetracarboxylate; mixture of 2,2,4,4-tetramethyl-21 -oxo-7-oxa-3 ,20-diazaspiro(5.1.11 ,2)-heneicosane-20- propanoic acid-dodecylester and 2,2,4,4-tetramethyl-21-oxo-7-oxa-3.20-diazaspiro(5.1.11.2)- heneicosane-20-propanoic acid-tetradecylester; lH,4H,5H,8H-2,3a,4a,6,7a,8a- hexaazacyclopenta[def]fluorene-4, 8-dione, hexahydro-2, 6-bis(2, 2,6, 6-tetramethyl-4- piperidinyl)-; polymethyl[propyl-3-oxy(2',2',6',6'-tetramethyl-4,4'-piperidinyl)]siloxane; polymethyl[propyl-3-oxy(r,2',2',6',6'-pentamethyl-4,4'-piperidinyl)]siloxane; copolymer of methylmethacrylate with ethyl acrylate and 2,2,6,6-tetramethylpiperidin-4-yl acrylate; copolymer of mixed C20 to C24 alpha-olefins and (2,2,6,6-tetramethylpiperidin-4- yl)succinimide; 1,2,3,4-butanetetracarboxylic acid, polymer with P,P,P',P'-tetramethyl- 2,4,8, 10-tetraoxaspiro[5.5]undecane-3,9-diethanol, l,2,2,6,6-pentamethyl-4-piperidinyl ester; 1,2,3,4-butanetetracarboxylic acid, polymer with P,P,P',P'-tetramethyl-2,4,8,10- tetraoxaspiro[5.5]undecane-3,9-diethanol, 2,2,6,6-tetramethyl-4-piperidinyl ester copolymer; 1 ,3 -benzenedi carb oxami de, N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl; 1 , l'-( 1 , 10-dioxo- 1,10- decanediyl)-bis(hexahydro-2,2,4,4,6-pentamethylpyrimidine; ethane diamide, N-(l-acetyl- 2,2,6,6-tetramethylpiperidinyl)-N'-dodecyl; formamide, N,N'-l,6-hexanediylbis[N-(2, 2,6,6- tetramethyl-4-piperidinyl); D-glucitol, l,3:2,4-bis-O-(2,2,6,6-tetramethyl-4-piperidinylidene)- ; 2,2,4,4-tetramethyl-7-oxa-3,20-diaza-21-oxo-dispiro[5.1.11.2]heneicosane; propanamide, 2- methyl-N-(2,2,6,6-tetramethyl-4-piperidinyl)-2-[(2,2,6,6-tetramethyl-4-piperidinyl)amino]-; 7-oxa-3,20-diazadispiro[5.1.11 ,2]heneicosane-20-propanoic acid, 2,2,4,4-tetramethyl-21-oxo- , dodecyl ester; N-(2,2,6,6-tetramethylpiperidin-4-yl)-P-aminopropionic acid dodecyl ester; N- (2,2,6,6-tetramethylpiperidin-4-yl)-N'-aminooxalamide; propanamide, N-(2, 2,6,6- tetramethyl-4-piperidinyl)-3-[(2,2,6,6-tetramethyl-4-piperidinyl)amino]-; mixture of 4- hexadecyloxy- and 4-stearyloxy-2,2,6,6-tetramethylpiperidine; 3-dodecyl-l-(l,2,2,6,6- pentamethylpiperidin-4-yl)pyrrolidine-2, 5-dione; 3 -dodecyl- l-(l-ethanoyl-2, 2,6,6- pentamethylpiperidin-4-yl)pyrrolidine-2, 5-dione; bis(2,2,6,6-tetramethylpiperidin-4- yl)succinate; bis(l,2,2,6,6-pentamethylpiperidin-4-yl) n-butyl 3,5-di-tert-butyl-4- hydroxybenzylmalonate; tris(2,2,6,6-tetramethylpiperidin-4-yl) nitrilotriacetate; 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(l,2,2,6,6-pentamethylpiperidyl)-2-n-butyl-2-(2- hydroxy-3,5-di-tert-butylbenzyl)mal onate; 3-n-octyl-7,7,9,9-tetramethyl-l,3,8- triazaspiro[4.5]decan-2, 4-dione; bis(l-octyloxy-2,2,6,6-tetramethylpiperidyl)sebacate; bis(l - octyloxy-2,2,6,6-tetramethylpiperidyl)succinate; 8-acetyl-3-dodecyl-7,7,9,9-tetramethyl- 1, 3, 8-triazaspiro[4.5]decane-2, 4-dione; 3-dodecyl-l-(2,2,6,6-tetramethylpiperidin-4- yl)pyrrolidin-2, 5-dione; 3-dodecyl-l-(l-ethanoyl-2,2,6,6-tetramethylpiperidin-4- yl)pyrrolidin-2, 5-dione; 3-dodecyl-l-(l,2,2,6,6-pentamethylpiperidin-4-yl)pyrrolidine-2,5- dione; a mixture of 4-hexadecyloxy- and 4-stearyloxy-2,2,6,6-tetramethylpiperidine; 2- undecyl-7,7,9,9-tetramethyl-l-oxa-3,8-diaza-4-oxospiro[4.5]decane; 1,5- dioxaspiro{5,5}undecane-3,3-dicarboxylic acid, bis(2,2,6,6-tetramethyl-4-piperidinyl) and1.5-dioxaspiro{5,5}undecane-3,3-dicarboxylic acid, bis(l,2,2,6,6-pentamethyl-4-piperidinyl);N1-(P-hydroxyethyl)3,3-pentamethylene-5,5-dimethylpiperazin-2-one; NJ-tert-octyl-3,3,5,5- tetramethyl-diazepin-2-one; N^tert-octyl-S^-pentamethylene-S^-hexamethylene-diazepin- 2-one; N1-tert-octyl-3,3-pentamethylene-5,5-dimethylpiperazin-2-one; trans- 1,2-cy cl ohexane- bis-(N1-5,5-dimethyl-3,3-pentamethylene-2-piperazinone; trans- 1,2-cy cl ohexane-bis-(N1-3 , 3 , 5 , 5 -di spiropentamethylene-2-piperazinone); N1-i sopropyl- 1 ,4-di azadi spiro-(3.3.5.5)pentamethylene-2-piperazinone; NMsopropyl-l^-diazadispiro-S^-pentamethylene-5.5-tetramethylene-2-piperazinone; N1-isopropyl-5,5-dimethyl-3,3-pentamethylene-2- piperazinone; trans-l,2-cyclohexane-bis-N1-(dimethyl-3,3-pentamethylene-2-piperazinone); N'-octyl-5,5-dimethyl-3,3-pentamethylene- l ,4-diazepin-2-one; N^octyl-l^-diazadispiro-(3.3.5.5)pentamethylene-l,5-diazepin-2-one; and mixtures thereof.

[0026] The at least one hindered phenol antioxidant compound includes a molecular fragment according to one or more of Formula (IVa), (IVb), or (IVc):Formula (IVa) Formula (IVb) Formula (IVc) wherein Ris in Formulae (IVa), (IVb) and (IVc) is chosen from hydrogen and a Ci-4 hydrocarbyl; R19 and R20 in Formulae (IVa), (IVb) and (IVc) are each individually chosen from hydrogen and a C1-C20 hydrocarbyl; and R37 in Formulae (IVa), (IVb) and (IVc) is chosen from C1-C12 hydrocarbyl. In one embodiment, Ris in Formulae (IVa), (IVb) and (IVc) and R37 are chosen from methyl and t-butyl. Examples of the hindered phenol antioxidant compound include (l,3,5-Tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)-l,3,5-triazine-2,4,6-(lH,3H,5H)-trione; l,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-l,3,5-triazine-2,4,6(lH,3H,5H)-trione; l,l,3-Tris(2’-methyl-4’-hydroxy-5’-t-butylphenyl)butane;Triethylene glycol bis[3-(3-t-butyl-4-hydroxy-5-methylphenyl)propionate]; 4,4’-Thiobis(2-t- butyl-5-methylphenol); 2,2’ -Thiodi ethylene bis[3-(3-t-butyl-4-hydroxyl-5- methylphenyl)propionate]; Octadecyl 3-(3’-t-butyl-4’-hydroxy-5’-methylphenyl)propionate; Tetrakismethylene(3-t-butyl-4-hydroxy-5-methylhydrocinnamate)methane; N,N’~Hexamethylene bis[3-(3-t-butyl-4-hydroxy-5-methylphenyl)propionamide]; Di(4- tertiarybutyl-3-hydroxy-2,6-dimethyl benzyl) thiodipropionate; and octadecyl 3,5-di-(tert)- butyl-4-hydroxyhydrocinnamate.

[0027] In one or more embodiments, the at least one phosphite or phosphonite compound includes triphenyl phosphite; diphenyl alkyl phosphites; phenyl dialkyl phosphites; trilauryl phosphite; trioctadecyl phosphite; distearyl pentaerythritol phosphite; tris(2,4-di-tert- butylphenyl) phosphite; tris(nonylphenyl) phosphite; a compound of formulae (A), (B), (C), (D), (E), (F), (G), (H), (J), (K) and (L):(L); and 2-butyl-2-ethyl-l,3-propanediol 2,4,6-tri-t-butylphenol phosphite, bis-(2,6-di-t-butyl-4- methlphenyl) pentaerythritol diphosphite, 2-butyl-2-ethyl-l,3-propanediol 2,4-di- cumylphenol phosphite, 2-butyl-2-ethyl-l,3-propanediol 4-methyl-2,6-di-t-butylphenol phosphite, and bis-(2,4,6-tri-t-butyl-phenyl) pentaerythritol diphosphite, tris(2,4-di-tert- butylphenyl)phosphite; Bis(2,4-dicumylphenyl)pentaerythritol diphosphite; and tetrakis(2,4- di-tert-butylphenyl)4,4’-biphenylene-diphosphonite.

[0028] The at least one thioester compound is dilauryl thiodipropionate, distearyl thiodipropionate, pentaerythrithol tetrakis-(3-dodecylthipropionate), tetra-alkyl thioethyl thiodisuccinate, 2, 12-dihydroxy-4, 10-dithia-7-oxatridecamethylene bi s [3 -(dodecylthio)propi onate], polyalkanol esters of alkylthio-alkanoic acids, or dialkyl 3,3’- thiodipropionate.

[0029] The stabilizer composition may optionally further comprise at least one flame retardant. The at least one flame retardant may be selected from the group consisting of inorganic flame retardants, nitrogen-containing flame retardants, radical formers, phosphorous-containingflame retardants, halogen-containing flame retardants based on chlorine and bromine, borates, sulfur-containing compounds, antidrip agents, silicon-containing compounds, carbon modifications and mixtures thereof.

[0030] According to one or more embodiments, the inorganic flame retardants include but are not limited to Al(0H)3, Mg(OH)2, A10(0H), MgCCh, layer silicates, such as e.g. montmorillonite or sepiolite, non- or organically modified, double salts, such as e.g. Mg — Al silicates, POSS (Polyhedral Oligomeric Sil sesqui oxane) compounds, huntite, hydromagnesite or halloysite and also Sb20s, Sb20s, MoOs, zinc stannate, zinc hydroxystannate.

[0031] The nitrogen-containing flame retardants include but are not limited to melamine, melem, melam, melon, melamine derivatives, melamine condensation products or melamine salts, benzoguanamine, polyisocyanurates, allantoin, (poly)phosphacenes, in particular melamine cyanurate, melamine phosphate, dimelamine phosphate, melamine pyrophosphate, melamine polyphosphate, melamine-methane phosphonate, melamine-metal phosphates, such as e.g. melamine aluminium phosphate, melamine zinc phosphate, melamine magnesium phosphate, and also the corresponding pyrophosphates and polyphosphates, ethylene diamine methane phosphate, poly-[2,4-(piperazin-l,4,-yl]-6-(morpholin-4-yl)3,5-triazine], ammonium polyphosphate, melamine borate, melamine hydrobromide.

[0032] The radical formers include but are not limited to alkoxyamines, hydroxylamine esters, azo compounds, dicumyl or polycumyl, hydroxyimides or the derivatives thereof, such as e.g. hydroxyimide ester or hydroxyimide ether.

[0033] Phosphorus-containing flame retardants include but are not limited to inorganic or organic phosphonates, such as e.g. aluminium phosphonate, phosphonate ester, oligomeric and polymeric derivatives of methane phosphonic acid, red phosphorus, phosphates, such as e.g. resorcin diphosphate, bisphenol-A-diphosphate and the oligomers thereof, triphenylphosphate, ethylene diamine phosphate, phosphinates, such as e.g. salts of hypophosphorous acid and the derivatives thereof, such as alkyl phosphinate salts, e.g. diethylphosphinate aluminium or diethylphosphinate zinc or aluminium phosphinate, aluminium phosphite, aluminium phosphate, 9,10-dihydro-9-oxa-10-phosphorylphenanthrene-10-oxide (DOPO) and the substituted compounds thereof.

[0034] Halogen-containing flame retardants based on chlorine and bromine include but are not limited to polybrominated diphenyl oxides, such as e.g. decabromodiphenyl oxide, tris(3- bromo-2,2-bis(bromomethyl)propylphosphate, tris(tribromoneopentyl)phosphate, tetrabromophthalic acid, l,2-bis(tribromophenoxy)ethane, hexabromocyclododecane, brominated diphenylethane, tris-(2,3,-dibromopropyl)isocyanurate, ethylenebis(tetrabromophthalimide), tetrabromobisphenol-A-bis(2,3)dibromopropylether), tetrabromobisphenol A, brominated polystyrene, brominated polybutadiene or polystyrene- brominated polybutadiene copolymers, brominated epoxy resin, polypentabromobenzylacrylate, brominated polyphenylene ether, possibly in combination with Sb2O3and / or Sb20s.

[0035] Borates include but are not limited to zinc borate or calcium borate, possibly on carrier materials such as silica.

[0036] The sulfur-containing compounds may include but are not limited to elementary sulfur, disulfides and polysulfides, thiuram sulfide, dithiocarbamates, mercaptobenzothiazole and sulfenamides.

[0037] As noted above, the at least one flame retardant may also be an antidrip agent, such as e.g. polytetrafluoroethylene, silicon-containing compounds, such as polyphenylsiloxanes, and carbon modifiers, such as carbon nanotubes (CNT) or graphene.

[0038] The at least one flame retardant is more preferably selected from chlorinated organic flame retardants, brominated organic flame retardants, phosphorus based flame retardants, metal hydroxide (such as aluminum trihydroxide, magnesium hydroxide), melamine based compounds, antimony compounds, borate compounds and other metal containing flame retardants (such as huntite and hydromagnesite).

[0039] While the stabilizer composition provides effective thermal and ultraviolet (UV) light stability, thermal stability and gas fade resistance to the stabilized polymer even in the absence of a hindered hydroxybenzoate, organic UV absorber, an acid scavenger or a dialkylhydroxylamine, the stabilized polymer composition may optionally further comprise at least one organic UV absorber selected from an ortho-hydroxyl tris-aryl-s-triazine compounds; 2-(2’-hydroxyphenyl) benzotriazoles; 2-hydroxybenzophenones; and benzoxazinones.

[0040] The ortho-hydroxyl-tri-aryl-s-triazine compounds may be a 2-(2’-hydroxyphenyl)- 1,3,5-triazine compound according to Formula (I):Formula (I) wherein each of R34 and R35 in Formula (I) is independently chosen from Ce-Cio aryl optionally substituted, C1-C10 hydrocarbyl-substituted amino, C1-C10 acyl and C1-C10 alkoxyl; and wherein R36 in Formula (I) is a substituent that is the same or different at from 0 to 4 positions of the phenoxy portion of Formula I and is independently chosen from hydroxyl, Ci- C12 hydrocarbyl, C1-C12 alkoxyl, C1-C12 alkoxyester, and C1-C12 acyl. Therefore, the orthohydroxyl tris-aryl-s-triazine compounds may be selected from 2-(2 ’-hy droxyphenyl)- 1,3,5 - triazine compound is chosen from: 4,6-bis-(2,4-dimethylphenyl)-2-(2-hydroxy-4- octyloxyphenyl)-s-triazine; 4,6-bis-(2,4-dimethylphenyl)-2-(2,4— dihydroxyphenyl)-s- triazine; 2,4-bis(2,4-dihydroxyphenyl)-6-(4-chlorophenyl)-s-triazine; 2,4-bis[2-hydroxy-4-(2- hydroxy-ethoxy)phenyl]-6-(4-chlorophenyl)-s-triazine; 2, 4-bis[2-hydroxy-4-(2 -hydroxy -4-(2- hydroxy-ethoxy)phenyl]-6-(2,4-dimethylphenyl)-s-triazine; 2,4-bis[2-hydroxy-4-(2- hydroxy ethoxy )phenyl]-6-(4-bromophenyl)-s-triazine; 2,4-bis[2-hydroxy-4-(2- acetoxy ethoxy )phenyl]-6-(4-chlorophenyl)-s-triazine; 2,4-bis(2,4-dihydroxyphenyl)-6-(2,4- dimethylphenyl)-s-triazine; 2,4-bis(4-biphenylyl)-6-[2-hydroxy-4-[(octyloxycarbonyl)ethylideneoxy]phenyl]-s-triazine; 2,4-bis(4-biphenylyl)-6-[2-hydroxy-4- (2-ethylhexyloxy)phenyl]-s-triazine; 2-phenyl-4-[2-hydroxy-4-(3-sec-butyloxy-2- hydroxypropyloxy)phenyl]-6-[2-hydroxy-4-(3-sec-amyloxy-2-hydroxypropyloxy)phenyl]-s- triazine; 2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxy-4(- 3 -benzyloxy -2- hydroxypropyloxy)phenyl]-s-triazine; 2,4-bis(2-hydroxy-4-n-butyloxyphenyl)-6-(2,4-di-n- butyloxyphenyl)-s-triazine; 2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxy-4-(3-nonyloxy-2-hydroxypropylox- y)-5-a-cumylphenyl]-s-triazine; methylenebis-{2,4-bis(2,4- dimethylphenyl)-6-[2-hydroxy-4-(3-butyloxy-2-hydroxypropoxy)phenyl]-s-tri azine}; methylene bridged dimer mixture bridged in the 3:5', 5:5' and 3:3' positions in a 5:4:1 ratio;2.4.6-tris(2-hydroxy-4-isooctyloxycarbonyliso-propylideneoxy-phenyl)-s-triazine; 2,4- bis(2,4-dimethylphenyl)-6-(2-hydroxy-4-hexyloxy-5-a-cumylphenyl)-s-triazine; 2-(2,4,6- trimethylphenyl)-4,6-bis[2-hydroxy-4-(3-butyloxy-2-hydroxypropyloxy)phenyl]-s-tri azine;2.4.6-tris[2-hydroxy-4-(3-sec-butyloxy-2-hydroxypropyloxy)-phenyl]-s-triazine; mixture of4.6-bis-(2,4-dimethylphenyl)-2-(2-hydroxy-4-(3-dodecyloxy-2-hydroxypropoxy)phenyl)-s- triazine and 4,6-bis-(2,4-dimethylphenyl)-2-(2-hydroxy-4-(3-tridecyloxy-2- hydroxypropoxy)phenyl)-s-triazine; 4,6-bis-(2,4-dimethylphenyl)-2-(2-hydroxy-4(3-(2- ethylhexyloxy)-2-hydroxypropoxy)-phenyl)-s-triazine; 4,6-diphenyl-2-(4-hexyloxy-2- hydroxyphenyl)-s-triazine; 2-(4,6-Diphenyl-l,3,5-triazin-2-yl)-5-[2-(2- ethylhexanoyloxy)ethoxy]phenol; 2,4,6-tris(2-hydroxy-4-octyloxyphenyl)-l,3,5-triazine; propanoic acid, 2,2’,2”-[l,3,5-triazine-2,4,6-triyltris[(3-hydroxy-4, l-phenylene)oxy]]tris- 1,1’, 1” -trioctyl ester; propanoic acid, 2-[4-[4,6-bis([l,r-biphenyl]-4-yl)-l,3,5-triazin-2yl]-3- hydroxyphenoxyl]-isooctyl ester; and combinations thereof.

[0041] The 2-hydroxybenzophenone may be at least one of 2-hydroxy-4- methoxybenzophenone, 2,2' dihydroxy-4-methoxybenzophenone, 2 hydroxy-4- octyloxybenzophenone, 2,2' dihydroxy-4, 4'-di-methoxybenzophenone, 2,2' dihydroxybenzophenone, 2, 2', 4, 4' tetrahydroxybenzophenone, 2,2'-dihydroxy-4,4'- dimethoxybenzophenone, 2,2' dihydroxy-4, 4'-diethoxybenzophenone, 2,2' dihydroxy-4, 4'- dipropoxybenzophenone, 2,2'-dihydroxy-4,4'-dibutoxybenzophenone, 2,2' dihydroxy-4- methoxy-4'-ethoxybenzophenone, 2,2'-dihydroxy-4-methoxy-4'-propoxybenzophenone, 2,2' dihydroxy-4-methoxy-4'-butoxybenzophenone, 2,2' dihydroxy-4-ethoxy-4'- propoxybenzophenone, 2,2'-dihydroxy-4-ethoxy-4'-butoxybenzophenone, 2,3'-dihydroxy- 4,4'-dimethoxybenzophenone, 2,3'-dihydroxy-4-methoxy-4'-butoxybenzophenone, 2 hydroxy - 4,4',5'-trimethoxybenzophenone, 2 hydroxy-4, 4', 6'-tributoxybenzophenone, 2 hydroxy-4- butoxy-4',5'-dimethoxybenzophenone, 2-hydroxy-4-ethoxy-2',4'-dibutylbenzophenone, 2 hydroxy-4-propoxy-4',6'-dichlorobenzophenone, 2-hydroxy-4-propoxy-4',6'- dibromobenzophenone, 2,4-dihydroxybenzophenone, 2-hydroxy-4-ethoxybenzophenone, 2hydroxy-4-propoxybenzophenone, 2-hydroxy-4-butoxybenzophenone, 2-hydroxy-4- methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxy-4'-ethylbenzophenone, 2-hydroxy- 4-methoxy-4'-propylbenzophenone, 2 hydroxy-4-methoxy-4'-butylbenzophenone, 2 hydroxy- 4-methoxy-4'-tert-butylbenzophenone, 2-hydroxy-4-methoxy-4'-chlorobenzophenone, 2 hydroxy-4-methoxy-2'-chlorobenzophenone, 2-hydroxy-4-methoxy-4'-bromobenzophenone, 2 hydroxy-4, 4'-dimethoxybenzophenone, 2-hydroxy-4,4'-dimethoxy-3 -methylbenzophenone, 2-hydroxy-4,4'-dimethoxy-2'-ethylbenzophenone, 2 hydroxy-4, 4', 5'- trimethoxybenzophenone, 2-hydroxy-4-ethoxy-4'-methylbenzophenone, 2 hydroxy-4-ethoxy- 4'-ethylbenzophenone, 2 hydroxy-4-ethoxy-4'-propylbenzophenone, 2 hydroxy-4-ethoxy-4'- butylbenzophenone, 2 hydroxy-4-ethoxy-4'-methoxybenzophenone, 2-hydroxy-4,4'- diethoxybenzophenone, 2 hydroxy-4-ethoxy-4'-propoxybenzophenone, 2 hydroxy-4-ethoxy- 4'-butoxybenzophenone, 2 hydroxy-4-ethoxy-4'-chlorobenzophenone, or 2-hydroxy-4-ethoxy- 4'-bromobenzophenone.

[0042] The 2 (2' hydroxyphenyl)benzotriazole may be at least one of 2-(2'-hydroxy-5'- methylphenyl)benzotriazole, 2 (2' hydroxy-5'-tert-butylphenyl)benzotriazole, 2 (2' hydroxy-3'- methyl-5'-tert-butylphenyl)benzotriazole, 2 (2' hydroxy-5'-cyclohexylphenyl)benzotriazole, 2 (2' hydroxy-3', 5'-dimethylphenyl)benzotriazole, 2 (2' hydroxy-5'-tert-butylphenyl)-5-chloro- benzotri azole, 2-(2'-hydroxy-5'-tert-octylphenyl)benzotriazole, 2 (3', 5' di-tert-butyl-2'- hydroxyphenyl)-5-chlorobenzotriazole, 2-(3', 5'-di -tert-amyl -2'-hydroxyphenyl)benzotriazole, 2 (3', 5' bis(a, a-dimethylbenzyl)-2'-hydroxyphenyl)benzotriazole, 2-(3'-tert-butyl-2'-hydroxy- 5'-(2-octyloxycarbonylethyl)phenyl)benzotriazole, 2,2' methylenebis[4-(l, 1,3,3- tetramethylbutyl)-6-benzotriazole-2-ylphenol], the transesterification product of 2 [3' tert- butyl-5'-(2-methoxycarbonylethyl)-2'-hydroxyphenyl]-2H-benzotriazole with polyethylene glycol 300 (TINUVIN™ 1130), 2 [2'-hydroxy-3'-(a, a-dimethylbenzyl)-5'-(l, 1,3,3- tetramethylbutyl)phenyl]benzotriazole, 5 trifhioromethyl-2-(2-hydroxy-3-a-cumyl-5-tert- octylphenyl)benzotriazole, 2 (2' hydroxy-5'-(2-hydroxyethyl)phenyl)benzotriazole, 2 (2' hydroxy-5'-(2 -methacryloyloxy ethyl)phenyl)benzotriazole, 2-(2'-hydroxy-3'-tert-butyl-5'- methylphenyl)-5-chlorobenzotriazole, 2-(3'-sec-butyl-5'-tert-butyl-2'- hydroxyphenyl)benzotriazole, 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2 (3' dodecyl-5'-methyl-2'-hydroxyphenyl)-benzotriazole, 2-(3'-tert-butyl-5'-(2-octyloxy carbonylethyl)-2'-hydroxyphenyl)-5-chlorobenzotriazole, 2 (5'-methyl-2'- hydroxyphenyl)benzotriazole, or 2 (5'-tert-butyl-2'-hydroxyphenyl)benzotriazole.

[0043] The benzoxazinone may be at least one of 2-methyl-3, l-benzoxazin-4-one, 2 butyl-3, 1- benzoxazin-4-one, 2-phenyl-3,l-benzoxazin-4-one, 2-(l- or 2-naphthyl)-3,l-benzoxazin-4- one, 2-(4-biphenyl)-3,l-benzoxazin-4-one, 2 p nitrophenyl-3,l-benzoxazin-4-one, 2 m nitrophenyl-3,l-benzoxazin-4-one, 2 p benzoylphenyl-3,l-benzoxazin-4-one, 2 p methoxyphenyl-3,l-benzoxazin-4-one, 2 O methoxyphenyl-3,l-benzoxazin-4-one, 2 cyclohexyl-3,l-benzoxazin-4-one, 2-p-(or m-)phthalimidephenyl-3,l-benzoxazin-4-one, N- phenyl-4-(3,l-benzoxazin-4-one-2-yl)phthalimide, N-benzoyl-4-(3,l-benzoxazine-4-one-2- yl)aniline, N-benzoyl-N-methyl-4-(3,l-benzoxazin-4-one-2-yl)-aniline, 2-[p-(N- phenylcarbamonyl)phenyl]-3,l-benzoxazin-4-one, 2 [p-(N-phenyl N- methylcarbamoyl)phenyl]-3,l-benzoxazin-4-one, 2,2' bis(3,l-benzoxazin-4-one), 2,2' ethylenebis(3,l-benzoxazin-4-one), 2,2' tetramethylenebis(3,l-benzoxazin-4-one), 2,2' hexamethylenebis(3,l-benzoxazin-4-one), 2,2'-decamethylenebis(3,l-benzoxazin-4-one), 2,2'-p-phenylenebis(3,l-benzoxazin-4-one), 2,2' m phenylenebis(3,l-benzoxazin-4-one), 2,2' (4,4'-diphenylene)bis(3,l-benzoxazin-4-one), 2,2' (2,6-or l,5-naphthalene)bis(3,l- benzoxazin-4-one), 2,2'-(2-methyl-p-phenylene)bis(3,l-benzoxazin-4-one), 2,2'-(2-nitro-p- phenylene)bis(3,l-benzoxazin-4-one), 2,2'-(2-chloro-p-phenylene)bis(3,l-benzoxazin-4-one), 2,2' (1,4 cyclohexylene)bis(3,l-benzoxazin-4-one), N-p-(3,l-benzoxazin-4-on-2-yl)phenyl, 4 (3,1 benzoxazin-4-on-2-yl)phthalimide, N-p-(3,l-benzoxazin-4-on-2-yl)benzoyl, 4 (3,1 benzoxazin-4-on-2-yl)aniline, 1,3,5 tri(3,l-benzoxazin-4-on-2-yl)benzene, 1,3,5 tri(3,l benzoxazin-4-on-2-yl)naphthalene, or 2,4,6-tri(3, l-benzoxazin-4-on-2-yl)naphthalene.

[0044] The stabilizer composition may optionally further comprise a hindered hydroxybenzoate compound. The hindered hydroxybenzoate compound is a compound according to Formula (III):Formula (III) wherein R17 in Formula (III) is a Ci-Cs alkyl and Ris in Formula (III) is a C1-C24 alkyl or substituted or unsubstituted C6-C24 aryl. In particular, the hindered hydroxybenzoate compound is 2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate; hexadecyl 3,5-di- tert-butyl-4-hydroxybenzoate; octadecyl 3,5-di-tert-butyl-4-hydroxybenzoate; octyl 3,5-di- tert-butyl-4-hydroxybenzoate; tetradecyl 3,5-di-tert-butyl-4-hydroxybenzoate; behenylyl 3,5- di-tert-butyl-4-hydroxybenzoate; 2-methyl-4,6-di-tert-butylphenyl 3,5-di-tert-butyl-4- hydroxybenzoate or butyl 3-[3-t-butyl-4-(3,5-di-t-butyl-4- hydroxybenzoyloxy)phenyl]propionate and mixtures thereof.

[0045] The stabilizer composition may optionally further comprise an acid scavenger. The acid scavenger used may include one or more of the following compounds: zinc oxide, calcium lactate, natural and synthetic hydrotalcites, natural and synthetic hydrocalumites, alkali metal salts and alkaline earth metal salts of higher fatty acids, calcium stearate, zinc stearate, magnesium behenate, magnesium stearate, sodium stearate, sodium ricinoleate and potassium palmitate, antimony pyrocatechol ate, zinc pyrocatechol ate. In one example, the acid scavenger includes magnesium oxide, aluminum oxide, magnesium hydroxide, aluminum hydroxide, carbonates thereof or mixtures thereof. A specific example of an acid scavenger includes DHT- 4A® (CAS No. 11097-59-9), a magnesium aluminum hydroxide carbonate hydrate that is a synthetic hydrotalcite compound.

[0046] The stabilizer composition may optionally further comprise a N,N- dihydrocarbylhydroxylamines of the general formula RIR2N(0H), wherein Ri and R2 are independently benzyl, methyl, ethyl, octyl, lauryl, dodecyl, tetradecyl, hexadecyl, heptadecyl or octadecyl, or wherein Ri and R2 are each the alkyl mixture found in hydrogenated tallow amine.

[0047] In one formulation of the stabilizer composition, the composition may include , excluding the inorganic UV blocker, between about 20.00 wt.% to about 50.00 wt.% (preferably about 25.00 wt.% to about 35.00 wt.%) of the hindered amine light stabilizer compound, between about 1 wt.% to about 20 wt.% (preferably about 2.00 wt.% to about 15.00 wt.%) of the hindered phenol antioxidant compound, and between about 5.00 wt.% to about 40.00 wt.% (preferably about 20.00 wt.% to about 30.00 wt.%) of the phosphite or phosphonite compound, where the wt.% of each component is based on the total weight of the organic stabilizer composition. Furthermore, the ratio of the at least one flame retardant to the organic stabilizers in the stabilizer composition (and thus excluding the inorganic UV blocker) is in the range of from 0.5: 1 to 200: 1 and the ratio of the inorganic UV blocker to the organic stabilizers in the stabilizer composition (and thus excluding the flame retardant) is in the range of from 1 : 10 to 200: 1; preferably in the range 1 : 5 to 100 : 1.

[0048] In another embodiment, a formulation of the stabilizer composition includes, excluding the inorganic UV blocker, between about 20.00 wt.% to about 50.00 wt.% (preferably about 30.00 wt.% to about 40.00 wt.%) of the hindered amine light stabilizer compound, between about 1 wt.% to about 20 wt.% (preferably about 2.00 wt.% to about 15.00 wt. %) of the hindered phenol antioxidant compound, between about 5.00 wt.% to about 25.00 wt.% (preferably about 6.00 wt.% to about 12.00 wt.%) of the phosphite or phosphonite compound, and between about 1.00 wt.% to about 15.00 wt.% (preferably about 5.00 wt.% to 10.00 wt. %) of the thioester compound, where the wt.% of each component is based on the total weight of the organic stabilizer composition, and a ratio of the at least one flame retardant to the organic stabilizers in the stabilizer composition (and thus excluding the inorganic UV blocker) is in the range of from 0.5 to 1 :0.5 to 200: 1 and the ratio of the inorganic UV blocker to the organic stabilizers in the stabilizer composition (and thus excluding the flame retardant) is in the range of from 1 : 10 to 200: 1; preferably in the range 1 :5 to 100: 1.

[0049] In a particular embodiment, a formulation of the stabilizer composition, excluding the inorganic UV blocker, includes about 50 wt.% of the hindered amine light stabilizer compound, about 15 wt.% of the hindered phenol antioxidant compound, about 10 wt.% of the phosphite or phosphonite compound and about 15 wt.% of the thioester compound, where the wt.% of each component is based on the total weight of the organic stabilizer composition.

[0050] In another particular embodiment, a formulation of the stabilizer composition, excluding the inorganic UV blocker, includes about 20 wt.% of the hindered amine light stabilizer compound, about 10 wt.% of the hindered phenol antioxidant compound, and about 25 wt.% of the phosphite or phosphonite compound, and about 35 wt.% of the thioester compound, where the wt.% of each component is based on the total weight of the organic stabilizer composition.

[0051] In embodiments where the stabilizer composition may include an optional organic UV absorber, the UV absorber may be present in the stabilizer composition in an amount between 1 wt% and 20 wt%, preferably between 2 wt% and 10% based on the total weight of the organic stabilizer composition.

[0052] In embodiments where the stabilizer composition may include an optional hindered hydroxybenzoate, the hindered hydroxybenzoate may be present in the stabilizer composition in an amount between 1 wt% and 40 wt%, preferably 2 wt% to 30 wt%, based on the total weight of the organic stabilizer composition.

[0053] In embodiments where the stabilizer composition may include an optional acid scavenger, the acid scavenger may be present in an amount between 1 wt% and 40 wt%, preferably 2 wt% to 20 wt%, based on the total weight of the organic stabilizer composition.

[0054] In embodiments where the stabilizer composition may include an optional N,N- dihydrocarbylhydroxylamine, the N,N-dihydrocarbylhydroxylamine may be present in an amount between about 1 wt.% to about 20 wt.% (preferably about 2.00 wt.% to about 15.00 wt. %) based on the total weight of the organic stabilizer composition.

[0055] Stabilized Compositions

[0056] A stabilizer composition may be combined with a material to be stabilized, e.g., an organic polymeric material, in any manner known in the art, thus forming a composition that is a stabilized material (also referred to herein as a stabilized polymer composition or a stabilized composition). Materials to be stabilized, to which the stabilizer composition may be combined with, include, but are not limited to, polymers, preferably organic polymers such as polyolefins, polyesters, polyethers, polyketones, polyamides, natural and synthetic rubbers,polyurethanes, polystyrenes, high-impact polystyrenes, polyacrylates, polymethacrylates, polyacetals, polyacrylonitriles, polybutadienes, polystyrenes, acrylonitrile-butadiene-styrene, styrene acrylonitrile, acrylate styrene acrylonitrile, cellulosic acetate butyrate, cellulosic polymers, polyimides, polyamideimides, polyetherimides, polyphenylsulfides, polyphenyloxidepolysulfones, polyethersulfones, polyvinylchlorides, polycarbonates, polyketones, aliphatic polyketones, thermoplastic olefins, aminoresin cross-linked polyacrylates and polyesters, polyisocyanate cross-linked polyesters and polyacrylates, phenol / formaldehyde, urea / formaldehyde and melamine / formaldehyde resins, drying and non-drying alkyd resins, alkyd resins, polyester resins, acrylate resins cross-linked with melamine resins, urea resins, isocyanates, isocyanurates, carbamates, and epoxy resins, cross-linked epoxy resins derived from aliphatic, cycloaliphatic, heterocyclic and aromatic glycidyl compounds, which are cross-linked with anhydrides or amines, polysiloxanes, Michael addition polymers, amines, blocked amines with activated unsaturated and methylene compounds, ketimines with activated unsaturated and methylene compounds, polyketimines in combination with unsaturated acrylic polyacetoacetate resins, polyketimines in combination with unsaturated acrylic resins, radiation curable compositions, epoxymelamine resins, as well as organic dyes, cosmetic products, cellulose-based paper formulations, photographic film paper, fibers, waxes, inks, and blends thereof.

[0057] Preferably, the material to be stabilized is an organic polymeric material to be stabilized selected from the group consisting of polyolefins, thermoplastic polyolefins, acrylonitrile- butadiene-styrene, polyesters, polyvinylchloride, polyamides, polyurethanes, or homo- and copolymers of propylene, isobutylene, butene, methylpentene, hexene, heptene, octene, isoprene, butadiene, hexadiene, dicyclopentadiene, ethylidene, cyclopentene and norbornene.

[0058] More preferably, the organic polymeric material to be stabilized is a polyolefin selected from the group consisting of i) polymers of monoolefins chosen from polyethylene, polypropylene, polyisobutylene, polybut-l-ene, or poly-4-methylpent-l-ene; ii) polymers of diolefins chosen from polyisoprene or polybutadiene; iii) polymers of cycloolefins chosen from cyclopentene or norbomene; iv) polyethylene chosen from optionally crosslinked polyethylene, high density polyethylene (HDPE), high density and high molecular weight polyethylene (HDPE-HMW), high density and ultrahigh molecular weight polyethylene(HDPE-UHMW), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), very low density polyethylene (VLDPE), or ultralow density polyethylene (ULDPE); v) thermoplastic polyolefins (TPO); vi) polyolefin elastomers (POE); vii) copolymers thereof; and viii) mixtures thereof.

[0059] In one embodiment, it is contemplated that the material to be stabilized may be a material or item used in the construction or renovation of buildings, e.g., homes, offices, warehouses, and the like. For example, the material to be stabilized may include vinyl siding, vinyl siding trim, shutters, gable vents, eaves, fascia, soffits, moldings, roofing shingles, roofing underlayment or base sheets, roofing membranes, batten systems, batten extenders, flashing, tile pans, ridge vents, weather blocks, hip and ridge systems (also known as hip and ridge shingles), eave risers, taper strips, gable end wedges, rake trim, geomembranes, composite deck materials, railings, window frames, and other materials and items used in the construction or renovation of buildings.

[0060] In a particular embodiment, a formulation of the stabilized polymer composition includes the stabilizer composition in an amount of from 0.01 wt% to 50 wt%, more preferably in an amount of from 0.05 wt% to 30 wt%, based on the total weight of the stabilized polymer composition, whereas the remainder of the stabilized polymer composition comprises the organic polymeric material to be stabilized.

[0061] The specific components of the stabilizer composition as described herein can be present in the stabilized composition in various amounts depending on the material to be stabilized and / or the level of desired protection. For example, the amount of the hindered amine light stabilizer compound in the stabilized polymer composition may be from about 0.01 wt.% to about 1.50 wt.%, preferably from about 0.02 wt.% to about 0.80 wt.%, more preferably from 0.03 wt.% to about 0.62 wt.%, based on the total weight of the stabilized composition.

[0062] The amount of the optional organic UV absorber in the stabilized composition for enduse can range from about 0.002 wt.% to about 0.50 wt.%, preferably 0.004 wt.% to about 0.20 wt.%, more preferably 0.005 wt.% to about 0.1 wt.% based on the total weight of stabilized composition.

[0063] The amount of the optional hindered hydroxybenzoate compound in the stabilized polymer composition is from about 0.01 wt.% to about 1.20 wt.%, preferably from about 0.02 wt.% to about 0.80 wt.%, more preferably from about 0.03 wt.% to about 0.62 wt.%, based on the total weight of the stabilized polymer composition.

[0064] The amount of the optional acid scavenger in the stabilized polymer composition is from about 0.001 wt.% to about 1.0% wt.%, preferably from about 0.003 wt.% to about 0.8 wt.%, more preferably from 0.05 wt.% to about 0.6 wt.%, based on the total weight of the stabilized composition.

[0065] The amount of the optional N,N-dihydrocarbylhydroxylamine in the stabilized polymer composition is from about 0.001 wt.% to about 0.50 wt.%, preferably from about 0.002 wt.% to about 0.25 wt.%, more preferably from about 0.004 wt.% to about 0.15 wt.%, based on the total weight of the stabilized polymer composition.

[0066] The amount of the hindered phenol antioxidant compound in the stabilized polymer composition is from about 0.001 wt.% to about 0.50 wt.%, preferably from about 0.002 wt.% to about 0.25 wt.%, more preferably from about 0.004 wt.% to about 0.15 wt.%, based on the total weight of the stabilized polymer composition.

[0067] The amount of the phosphite or phosphonite compound in the stabilized polymer composition is from about 0.005 wt.% to about 1.00 wt.%, preferably from about 0.01 wt.% to about 0.80 wt.%, more preferably from about 0.02 wt.% to about 0.5 wt.%, based on the total weight of the stabilized polymer composition.

[0068] The amount of the thioester compound in the stabilized composition is from about 0.001 wt.% to about 1.0 wt.%, preferably from about 0.003 wt.% to about 0.6 wt.%, more preferably from about 0.006 wt.% to about 0.4 wt.%, based on the total weight of the stabilized polymer composition.

[0069] The stabilized polymer composition may optionally further comprise at least one filler selected from ground or precipitated calcium carbonate (PCC), kaolin, mica, clay, wollastonite, glass fiber, alumina (AI2O3) and combinations thereof.

[0070] It is envisioned that the above-described stabilizer composition may be initially formulated as a masterbatch composition, in which the comprised stabilizers and other additives may be present at higher concentrations than in a final formulation, where the master batch composition is diluted prior to formation into a stabilized material or composition.

[0071] In one embodiment, the stabilizer composition is a “master batch” composition. In one embodiment, the stabilizer composition is a master batch including the stabilizers in an amount from about 10 wt.% to about 90 wt.% of the stabilizer composition, based on the total weight of the master batch composition and the material to be stabilized is present in an amount from about 20 wt% to about 80 wt%. In a more preferred embodiment, the master batch stabilizer composition includes from about 30 wt. % to about 60 wt.% of stabilizers in the stabilizer composition, based on the total weight of the master batch composition, with the remainder being the material to be stabilized, present in an amount from about 40 wt% to about 70 wt%. In another embodiment, the master batch composition includes from about 40 wt. % to about 50 wt.% of the stabilizers in the stabilizer composition, based on the total weight of the master batch composition, with the remainder being the material to be stabilized, present in an amount of about 50 wt% to about 60 wt%, based on the total weight of the master batch composition.

[0072] One embodiment includes a master batch concentrate comprising a stabilizer composition according to any of the embodiments described herein and at least one organic material identical or compatible with a material to be stabilized, wherein the stabilizer composition is present in an amount from 10 wt. % to 90 wt.% based on the total weight of the master batch concentrate.

[0073] In certain embodiments, the amount of stabilizer composition, excluding the inorganic UV blocker and the optional flame retardant, as described herein in the stabilized composition for end-use is present at any point in the range from 0.01 wt. % to 5 wt. %, based on the total weight of the material to be stabilized. In a particular embodiment, the amount of stabilizer composition, excluding the inorganic UV blocker and the optional flame retardant, in the stabilized composition for end-use is present at any point in the range from 0.05 wt. % to 2 wt. %, based on the total weight of the material to be stabilized.

[0074] In certain embodiments, the amount of flame retardant in the stabilized composition is from 0.5 wt.% to 40 wt.% based on the total weight of the material to be stabilized. In a particular embodiment, the amount of flame retardant in the stabilized composition is from 1 wt.% to 30 wt.% based on the total weight of the material to be stabilized.

[0075] In certain embodiments, the amount of inorganic UV blocker in the stabilized composition is from 0.05 wt.% to 40 wt.% based on the total weight of the material to be stabilized. In a particular embodiment, the amount of inorganic UV blocker in the stabilized composition is from 0.1 wt.% to 30 wt.% based on the total weight of the material to be stabilized.

[0076] This application also contemplates a method of preparing the stabilized composition above by combining the stabilizer composition with the material to be stabilized. The term “combining” or “combined” is intended to include all manners in which the components can be combined, and includes, for example, intermixing, admixing, integrating, mixing, blending, and the like. Additionally, it is noted that the stabilizer composition and the material to be stabilized may be combined in any order, z.e., the stabilizer composition can be added to the material to be stabilized, or vice versa, or the stabilizer composition and the material to be stabilized can be simultaneously added to a vessel.

[0077] The material to be stabilized and the stabilizer composition can be combined by blending or compounding the components in a kneading apparatus such as a single or twin screw extruder, Banbury mixer, or hot rollers. The processing parameters and the use of such kneading apparatus are well known to those skilled in the art.

[0078] As would be apparent to those skilled in the art of making plastic materials, in addition to the materials to be stabilized and the stabilizer composition, the stabilized polymer composition of the present invention may also include conventional co-additives including, but not limited to, metal deactivators, nitrones, lactones, co-stabilizers, nucleating agents, clarifying agents, neutralizers, metallic stearates, metal oxides, hydrotalcites, fillers and reinforcing agents, plasticizers, lubricants, emulsifiers, pigments, rheology agents, catalysts, leveling agents, optical brighteners, flame retardant agents, anti-static agents, dyes, pigments,thioesters, hydroxylamines, trialkylamine oxides, benzofuranones, nitrones, blowing agents and mixtures thereof.

[0079] The compositions disclosed herein may be used in a variety of applications, including, but not limited to automotive applications such as air vents, instrument panels, control consoles, battery house, and exterior parts such as bumpers, side moldings and mirror housings. The compositions may also be used in geomembrane applications such as, for example, pond liners, ground covers, underlayment, water barriers, erosion control membranes, and the like. Other applications that would benefit from thermal and UV stabilization are also contemplated herein.

[0080] While the invention has been described with reference to various exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or matter to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims.EXAMPLES:

[0081] The invention will now be illustrated by the following examples. The examples are not intended to limit the scope of the present invention. In conjunction with the general and detailed descriptions above, the examples provide further understanding of the present invention.

[0082] Materials:

[0083] Thermoplastic olefin (TPO) Hifax CA10A from Washington Penn Plastic Co., Inc is used as the base polymer. A 70 wt. % TiCh masterbatch in polypropylene is supplied by Washington Penn Plastic Co., Inc. The various additives (designated A - J), their trade names, chemical names, source of supply, and their wt. % of loading in formulated samples are listedin Table 1 below, which will be used henceforth. The additives are used as received. In some cases, these same chemicals may be available from other suppliers under different trade names.Table 1. Various additives (designated A - J), their trade names, chemical names, source of supply, and their wt. % of loading in formulated samples.Gas Fading Performance of TPO (Color Change)Sample Preparation

[0084] The various additives and pigment TiCh (3%) are compounded with TPO (Hifax CA10A) polymer and extruded using a twin-screw (Werner & Pfleiderer, Model ZSK-30) with conventional parameters. After twin-screw extrusion, TPO membranes (with thickness of 1.2mm) were prepared by cast film extrusion (Davis- Standard, Model KL125) with a film die.Gas Fading Resistance

[0085] Samples are exposed to NOx in a chamber with the temperature set at 140°F for 168 hours.

[0086] Changes in color (delta E or AE) of the samples after gas fading study are used to measure discoloration. The color measurements are conducted using an X-Rite Color i7800 spectrophotometer using CIELAB color scale (for color measurement, reporting L* as the lightness coordinate, a* as the red / green coordinate, and b* as the yellow / blue coordinate). AL*, Aa*, and Ab* are calculated by subtracting the initial data (time = 0 hour) from the data after the gas fading study of 168 hours. AE is calculated with the equation:

[0087] The higher the AE, the more the color change or discoloration of the samples from the initial state. The results are shown in Table 2 below.Table 2: Gas Fading Resistance of Examples 1 to 8: Color Change* 2B means the loading of B is 0.04 wt.%.

[0088] As shown in Table 2, Example 2 (industrial benchmark) shows the highest color change. Examples 3, 4, and 5 have lower color change than Examples 6, 7, and 8, demonstrating a surprising finding that the absence of DHT-4A® (H) significantly reduces the color change. Examples 6 and 7 have comparable color changes with example 8, indicating the removal of CYASORB® UV 1164 (F) or CYASORB® UV 2908 (G) does not affect the color change. Surprisingly, Example 3 with the minimum components outperforms both Example 2 (industrial benchmark) and Example 8 with maximum components.

[0089] Thermal Aging Test Conditions: For thermal performance, samples are kept in a conventional oven set at 135 °C. The color measurements are conducted using an X-Rite Color i7800 spectrophotometer using CIELAB color scale at intervals of 168 hours. From the raw data, Delta E or AE, which is the difference between total color change before and after exposure, is calculated. Lower Delta E indicates less color change respectively, indicating better performance. The results are shown in the Table 3 below.Table 3: Thermal Aging Performances of Examples 1 to 8: Color Change** 2B means the loading of B is 0.04 wt.%.

[0090] As shown in Table 3, Example 2 (industrial benchmark) shows the highest color change. Examples 3, 4, and 5 have lower color change than Examples 6, 7, and 8, demonstrating a surprising finding that the removal of DHT-4A (H) significantly reduces the color change. Examples 6 and 7 have comparable color changes with Example 8, showing another finding that CYASORB® UV 1164 (F) or CYASORB® UV 2908 (G) does not affect the color change. It is thus surprising that Example 3 with the minimum components outperforms both Example 2 (industrial benchmark) and Example 8 with maximum components.

[0091] Weathering Test Conditions: For weathering performance, samples are exposed to Xenon Weather-ometer under ASTM D6662 testing conditions. Tensile elongation at break is conducted using an Intron. Higher tensile elongation at break indicates better performance of the TPO. The results of the retention of elongation at break after 12 months exposure are shown in the Table 4 below.Table 4: Weathering Performances of Examples 1 to 8: Tensile Elongation at Break** 2B means the loading of B is 0.04 wt.%.

[0092] As shown in Table 4, Example 1 without stabilization shows failure after 12 months weathering. Example 2 (industrial benchmark) shows the lowest retention of elongation at break of all the stabilized samples 2-8. Examples 2-8 have comparable retention of elongation at break, demonstrating a surprising finding that none of DHT-4A® (H), CYASORB® UV 1164 (F), and CYASORB® UV 2908 (G) have any effect on the retention of elongation at break. Example 3 with the minimum components has comparable performance with Example 8 with maximum components.

[0093] Although only a few example embodiments have been described in detail above, those skilled in the art will readily appreciate that many modifications are possible in the example embodiments without materially departing from this invention. Accordingly, all such modifications are intended to be included within the scope of this disclosure as defined in the following claims.

Claims

CLAIMS1. A stabilized polymer composition comprising: a) an organic polymeric material to be stabilized, and b) a stabilizer composition comprising: i. at least one inorganic UV blocker; ii. at least one hindered amine light stabilizer compound; iii. at least one hindered phenol antioxidant compound; iv. at least one phosphite or phosphonite compound; and v. at least one thioester; wherein the stabilizer composition provides effective thermal and ultraviolet (UV) light stability, thermal stability and gas fade resistance to the stabilized polymer composition even when a hindered hydroxybenzoate, organic UV absorber, an acid scavenger and / or a dialkylhydroxylamine are not present.

2. The stabilized polymer composition according to claim 1 wherein the stabilizer composition comprises at least one inorganic UV blocker selected from cerium oxide (CeCh), titanium oxide (TiCh), and zinc oxide (ZnO), barium sulfate (BaSCh), silica, talc, carbon fiber and carbon black.

3. The stabilized polymer composition according to claim 1 or 2 wherein the stabilizer composition comprises at least one hindered amine light stabilizer compound comprising a molecular fragment according to Formula (II):Formula (II), whereinR31 in Formula (II) is chosen from: hydrogen; OH; C1-C20 hydrocarbyl; -CH2CN; C1-C12 acyl; and Ci-Cis alkoxy;R38 in Formula (II) is chosen from: hydrogen; and Ci-Cs hydrocarbyl; and each of R29, R30, R32, and R33 in Formula (II) is independently chosen from C1-C20 hydrocarbyl, or R29 and R30 and / or R32 and R33 in Formula (II) taken together with the carbon to which they are attached form a C5-C10 cycloalkyl; or Formula (Ila)Formula (Ila), wherein m in Formula (Ila) is an integer from 1 to 2; R39 in Formula (Ila) is chosen from: hydrogen; OH; C1-C20 hydrocarbyl; -CH2CN; C1-C12 acyl; and Ci-Cis alkoxy; and each of G1-G4 in Formula (Ila) is independently chosen from C1-C20 hydrocarbyl.

4. The stabilized polymer composition according to claim 3 wherein the stabilizer composition comprises hindered amine light stabilizer selected from: bis(2, 2,6,6- tetramethylpiperidin-4-yl) sebacate; bis(2,2,6,6-tetramethylpiperidin-4-yl)succinate; bis(l,2,2,6,6-pentamethylpiperidin-4-yl)sebacate; bis(l-octyloxy-2, 2,6,6- tetramethylpiperidin-4-yl)sebacate; bis(l,2,2,6,6-pentamethylpiperidin-4-yl) n-butyl 3,5-di- tert-butyl-4-hydroxybenzylmal onate; a condensate of l-(2-hydroxyethyl)-2, 2,6,6- tetramethyl-4-hydroxypiperidine and succinic acid; 2,2,6,6-tetramethylpiperidin-4-yl stearate; 2,2,6,6-tetramethylpiperidin-4-yl dodecanate; l,2,2,6,6-pentamethylpiperidin-4-yl stearate; l,2,2,6,6-pentamethylpiperidin-4-yl dodecanate; a condensate of N,N'-bis(2, 2,6,6- tetramethylpiperidin-4-yl)hexamethylenediamine and 4-tert-octylamino-2,6-di chi oro-1, 3,5- triazine; tris(2,2,6,6-tetramethylpiperidin-4-yl) nitrilotriacetate; tetrakis(2, 2,6,6- tetramethylpiperidin-4-yl)- 1,2,3,4-butanetetracarboxylate; 4-benzoyl-2, 2,6,6- tetramethylpiperidine; 4-stearyloxy-2,2,6,6-tetramethylpiperidine; bis(l,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-l,3,8-triazaspiro[4.5]decan-2,4-dione; bis(l-octyloxy-2,2,6,6- tetramethylpiperidyl)sebacate; bis(l-octyloxy-2,2,6,6-tetramethylpiperidyl)succinate; a condensate of N,N'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexamethylenediamine and 4- morpholino-2,6-dichloro-l,3,5-triazine; a condensate of N,N'-bis(2,2,6,6- tetramethylpiperidin-4-yl)hexamethylenediamine and 4-morpholino-2,6-dichl oro-1, 3,5- triazine, methylated; a condensate of 2-chloro-4,6-bis(4-n-butylamino-2, 2,6,6- tetramethylpiperidyl)-l,3,5-triazine and l,2-bis(3-aminopropylamino)ethane; a condensate of 2-chloro-4,6-bis(4-n-butylamino-l,2,2,6,6-pentamethylpiperidyl)-l,3,5-triazine and 1,2- bis-(3- aminopropylamino)ethane; 8-acetyl-3-dodecyl-7,7,9,9-tetramethyl-l,3,8- triazaspiro[4.5]decane-2, 4-dione; 3-dodecyl-l-(2,2,6,6-tetramethylpiperidin-4- yl)pyrrolidin-2, 5-dione; 3-dodecyl-l-(l-ethanoyl-2,2,6,6-tetramethylpiperidin-4- yl)pyrrolidin-2, 5-dione; 3-dodecyl-l-(l,2,2,6,6-pentamethylpiperidin-4-yl)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-tetramethylpiperidin-4-yl)hexamethylenediamine and 4- cyclohexylamino-2,6-dichloro-l,3,5-triazine; a condensate of 1 ,2-bis(3- aminopropylamino)ethane, 2,4,6-trichloro-l,3,5-triazine and 4-butylamino-2, 2,6,6- tetramethylpiperidine; 2 -undecyl -7,7,9, 9-tetram ethyl- l-oxa-3, 8-diaza-4- oxospiro[4.5]decane; oxo-piperanzinyl-triazines; a reaction product of 7,7,9, 9-tetramethyl- 2-cycloundecyl-l-oxa-3,8-diaza-4-oxospiro[4.5]decane and epichlorohydrin; tetrakis(2,2,6,6-tetramethyl-4-piperidyl) butane- 1,2, 3, 4-tetracarboxylate; 1, 2,3,4- butanetetracarboxylic acid, tetrakis(l,2,2,6,6-pentamethyl-4-piperidinyl)ester; 1, 2,3,4- butanetetracarboxylic acid, l,2,2,6,6-pentamethyl-4-piperdinyl tridecyl ester; 1, 2,3,4- butanetetracarboxylic acid, 2,2,6,6-tetramethyl-4-piperidinyl tridecyl ester; 1, 2,3,4- butanetetracarboxylic acid, polymer with 2,2,6,6-tetramethyl-2,4,8,10-tetraoxaspiro[5.5]- undecane-3,9-diethanol, l,2,2,6,6-pentamethyl-4-piperdinyl ester; 1, 2,3,4- butanetetracarboxylic acid, polymer with 2,2,6,6-tetramethyl-2,4,8,10-tetraoxaspiro[5.5]- undecane-3,9-diethanol, 2,2,6,6-tetramethyl-4-piperdinyl ester; bis(l-undecanoxy-2, 2,6,6- tetramethylpiperidin-4-yl)carbonate; l-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethyl- 4-piperdinol; l-(2 -hydroxy-2-methylpropoxy)-4-octadecanoyloxy-2, 2,6,6- tetram ethylpiperidine; 1 -(4-octadecanoyloxy-2,2,6,6-tetramethylpiperidin- 1 -yloxy)-2-octadecanoyloxy-2-methylpropane; 1 -(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-piperdinol; a reaction product of l-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-piperdinol and dimethyl succinate; 2,2,4,4-tetramethyl-7-oxa-3,20-diazadispiro[5.1.11 ,2]heneicosan-21- one; the ester of 2,2,6,6-tetramethyl-4-piperidinol with higher fatty acids; 3-dodecyl-l- (2,2,6,6-tetramethyl-4-piperidyl)pyrrolidine-2,5-dione; lH-Pyrrole-2, 5-dione, 1 -octadecyl-, polymer with (1 -methyl ethenyl)benzene and l-(2,2,6,6-tetramethyl-4-piperidinyl)-lH- pyrrole-2, 5-dione; piperazinone, l,l\l"-[l,3,5-triazine-2,4,6-triyltris[(cyclohexylimino)- 2,l-ethanediyl]]tris[3,3,5,5-tetramethyl-; piperazinone, l,l',l"-[l,3,5-triazine-2,4,6- triyltris[(cyclohexylimino)-2,l-ethanediyl]]tris[3,3,4,5,5-pentamethyl-; the reaction product of 7,7,9, 9-tetramethyl-2-cycloundecyl-l-oxa-3,8-diaza-4-oxospiro[4.5]decane and epichlorohydrin; the condensate of N,N'-bis(2,2,6,6-tetramethylpiperidin-4- yl)hexamethylenediamine and 4-cyclohexylamino-2,6-dichloro-l,3,5-triazine; the condensate of l,2-bis(3-aminopropylamino)ethane, 2,4,6-trichloro-l,3,5-triazine and 4- butylamino-2,2,6,6-tetramethylpiperidine; the condensate of N,N'-bis(2, 2,6,6- tetramethylpiperidin-4-yl)hexamethylenediamine and 4-morpholino-2,6-dichl oro-1, 3,5- triazine; the condensate of 2-chloro-4,6-bis(4-n-butylamino-2,2,6,6-tetramethylpiperidyl)- 1,3,5-triazine and l,2-bis(3-aminopropylamino)ethane; the condensate of 2-chloro-4,6- bis(4-n-butylamino-l,2,2,6,6-pentamethylpiperidyl)-l,3,5-triazine and l,2-bis-(3- aminopropylamino)ethane; 2-[(2-hydroxyethyl)amino]-4,6-bis[N-(l-cyclohexyloxy- 2,2,6,6-tetramethylpiperidin-4-yl)butylamino-l,3,5-triazine; propanedioic acid, [(4- methoxyphenyl)-methylene]-bis-(l,2,2,6,6-pentamethyl-4-piperidinyl) ester; tetrakis(2,2,6,6-tetramethylpiperidin-4-yl)-l,2,3,4-butanetetracarboxylate; benzenepropanoic acid, 3,5-bis(l,l-dimethylethyl)-4-hydroxy-, l-[2-[3-[3,5-bis(l,l- dimethylethyl)-4-hydroxyphenyl]-l-oxopropoxy]ethyl]-2,2,6,6-tetramethyl-4-piperidinyl ester; N-(l-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl)-N'-dodecyloxalamide; tris(2, 2,6,6- tetramethylpiperidin-4-yl) nitrilotriacetate; l,5-dioxaspiro{5,5}undecane-3,3-dicarboxylic acid, bis(l,2,2,6,6-pentamethyl-4-piperidinyl): l,5-dioxaspiro{5,5}undecane-3,3- dicarboxylic acid, bis(2,2,6,6-tetramethyl-4-piperidinyl); the condensate of l-(2- hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid; the condensate of N,N'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexamethylenediamine and 4-tert- octylamino-2,6-dichloro-l,3,5-triazine; 1,2,3,4-butanetetracarboxylic acid, 1,2, 2, 6, 6-pentamethyl-4-piperidinyl tridecyl ester; tetrakis(2,2,6,6-tetramethylpiperidin-4-yl)-l,2,3,4- butanetetracarboxylate; 1,2,3,4-butanetetracarboxylic acid, 2,2,6,6-tetramethyl-4- piperidinyl tridecyl ester; tetrakis(l, 2,2,6, 6-pentamethylpiperidin-4-yl)-l, 2,3,4- butanetetracarboxylate; mixture of 2,2,4,4-tetramethyl-21-oxo-7-oxa-3.20- diazaspiro(5.1.11 ,2)-heneicosane-20-propanoic acid-dodecylester and 2,2,4,4-tetramethyl- 21 -oxo-7-oxa-3 ,20-diazaspiro(5.1.11 ,2)-heneicosane-20-propanoic acid-tetradecylester; lH,4H,5H,8H-2,3a,4a,6,7a,8a-hexaazacyclopenta[def]fluorene-4,8-dione, hexahydro-2, 6- bis(2,2,6,6-tetramethyl-4-piperidinyl)-; polymethyl[propyl-3-oxy(2',2',6',6'-tetramethyl- 4, 4'-piperidinyl)] siloxane; polymethyl[propyl-3-oxy(r,2',2',6',6'-pentamethyl-4,4'- piperidinyl)]siloxane; copolymer of methylmethacrylate with ethyl acrylate and 2,2, 6,6- tetramethylpiperidin-4-yl acrylate; copolymer of mixed C20 to C24 alpha-olefins and (2,2,6,6-tetramethylpiperidin-4-yl)succinimide; 1,2,3,4-butanetetracarboxylic acid, polymer with P,P,P',P'-tetramethyl-2,4,8,10-tetraoxaspiro[5.5]undecane-3,9-diethanol, 1, 2, 2,6,6- pentamethyl-4-piperidinyl ester; 1,2,3,4-butanetetracarboxylic acid, polymer with P,P,P',|3'- tetramethyl-2,4,8,10-tetraoxaspiro[5.5]undecane-3,9-diethanol, 2,2,6,6-tetramethyl-4- piperidinyl ester copolymer; 1,3-benzenedicarboxamide, N,N'-bis(2,2,6,6-tetramethyl-4- piperidinyl; 1 , 1 '-( 1 , 10-dioxo- 1 , 10-decanediyl)-bis(hexahydro-2,2,4,4,6- pentamethylpyrimidine; ethane diamide, N-(l-acetyl-2,2,6,6-tetramethylpiperidinyl)-N'- dodecyl; formamide, N,N'-l,6-hexanediylbis[N-(2,2,6,6-tetramethyl-4-piperidinyl); D- glucitol, 1,3 :2,4-bis-O-(2,2,6,6-tetramethyl-4-piperidinylidene)-; 2,2,4,4-tetramethyl-7-oxa- 3 ,20-diaza-21 -oxo-dispiro[5.1.11 ,2]heneicosane; propanamide, 2-methyl-N-(2,2,6,6- tetramethyl-4-piperidinyl)-2-[(2,2,6,6-tetramethyl-4-piperidinyl)amino]-; 7-oxa-3,20- diazadispiro[5.1.11.2]heneicosane-20-propanoic acid, 2,2,4,4-tetramethyl-21-oxo-, dodecyl ester; N-(2,2,6,6-tetramethylpiperidin-4-yl)-P-aminopropionic acid dodecyl ester; N- (2,2,6,6-tetramethylpiperidin-4-yl)-N'-aminooxalamide; propanamide, N-(2, 2,6,6- tetramethyl-4-piperidinyl)-3-[(2,2,6,6-tetramethyl-4-piperidinyl)amino]-; mixture of 4- hexadecyloxy- and 4-stearyloxy-2,2,6,6-tetramethylpiperidine; 3-dodecyl-l-(l,2,2,6,6- pentamethylpiperidin-4-yl)pyrrolidine-2, 5-dione; 3 -dodecyl- l-(l-ethanoyl-2, 2,6,6- pentamethylpiperidin-4-yl)pyrrolidine-2, 5-dione; bis(2,2,6,6-tetramethylpiperidin-4- yl)succinate; bis(l,2,2,6,6-pentamethylpiperidin-4-yl) n-butyl 3,5-di-tert-butyl-4-hydroxybenzylmalonate; tris(2,2,6,6-tetramethylpiperidin-4-yl) nitrilotriacetate; 1, l'-(l,2- ethanediyl)bis(3,3,5,5-tetramethylpiperazinone); 4-benzoyl-2,2,6,6-tetramethylpiperidine; 4-stearyloxy-2,2,6,6-tetramethylpiperidine; bis(l,2,2,6,6-pentamethylpiperidyl)-2-n-butyl- 2-(2-hydroxy-3,5-di-tert-butylbenzyl)mal onate; 3-n-octyl -7,7,9, 9-tetramethyl- 1,3,8- triazaspiro[4.5]decan-2, 4-dione; bis(l-octyloxy-2,2,6,6-tetramethylpiperidyl)sebacate; bis(l-octyloxy-2,2,6,6-tetramethylpiperidyl)succinate; 8-acetyl-3-dodecyl-7, 7,9,9- tetram ethyl- 1 ,3 , 8-triazaspiro[4.5]decane-2, 4-dione; 3 -dodecyl- 1 -(2, 2,6,6- tetramethylpiperidin-4-yl)pyrrolidin-2, 5-dione; 3-dodecyl-l-(l-ethanoyl-2,2,6,6- tetramethylpiperidin-4-yl)pyrrolidin-2, 5-dione; 3-dodecyl-l-(l,2,2,6,6- pentamethylpiperidin-4-yl)pyrrolidine-2, 5-dione; a mixture of 4-hexadecyloxy- and 4- stearyloxy-2,2,6,6-tetramethylpiperidine; 2-undecyl-7,7,9,9-tetramethyl-l-oxa-3,8-diaza-4- oxospiro[4.5]decane; l,5-dioxaspiro{5,5}undecane-3,3-dicarboxylic acid, bis(2, 2,6,6- tetramethyl-4-piperidinyl) and l,5-dioxaspiro{5,5}undecane-3,3-dicarboxylic acid, bis(l,2,2,6,6-pentamethyl-4-piperidinyl); N1-(P-hydroxyethyl)3,3-pentamethylene-5,5- dimethylpiperazin-2-one; N'-tert-octyl-3,3,5,5-tetramethyl-diazepin-2-one; N^tert-octyl- 3,3-pentamethylene-5,5-hexamethylene-diazepin-2-one; N^tert-octyl-S^-pentamethylene- 5,5-dimethylpiperazin-2-one; trans-l,2-cyclohexane-bis-(N1-5,5-dimethyl-3,3- pentamethylene-2-piperazinone; trans-1, 2-cyclohexane-bis-(N1-3, 3,5,5- dispiropentamethylene-2-piperazinone); NMsopropyl-l^-diazadispiro- (3,3,5 , 5)pentamethylene-2-piperazinone; N1-i sopropyl- 1 ,4-diazadi spiro-3 ,3 - pentamethylene-5,5-tetramethylene-2-piperazinone; NMsopropyl-S^-dimethyl-S^- pentamethylene-2-piperazinone; trans-1, 2-cyclohexane-bis-N1-(dimethyl-3, 3- pentamethylene-2-piperazinone); JSP-octyl-S^-dimethyl-S^-pentamethylene-l^-diazepin- 2-one; N1-octyl-l,4-diazadispiro-(3,3,5,5)pentamethylene-l,5-diazepin-2-one; and mixtures thereof.

5. The stabilized polymer composition according to any one of claims 1 to 4 wherein the stabilizer composition comprises at least one hindered phenol antioxidant compound with a molecular fragment according to one or more of Formula (IVa), (IVb), or (IVc):Formula (IVa), Formula (IVb), or Formula (IVc), whereinRis in Formulae (IVa), (IVb) and (IVc) is chosen from hydrogen and a Ci-4 hydrocarbyl;R19 and R20 in Formulae (IVa), (IVb) and (IVc) are each individually chosen from hydrogen and a C1-C20 hydrocarbyl; andR37 in Formulae (IVa), (IVb) and (IVc) is chosen from C1-C12 hydrocarbyl.

6. The stabilized polymer composition according to claim 5 wherein Ris and R37 in Formulae (IVa), (IVb) and (IVc) are chosen from methyl and t-butyl.

7. The stabilized polymer composition according to claim 5 or 6, wherein the at least one hindered phenol compound is chosen from: (l,3,5-Tris(4-t-butyl-3-hydroxy-2,6- dimethylbenzyl)-l,3,5-triazine-2,4,6-(lH,3H,5H)-trione; l,3,5-tris(3,5-di-tert-butyl-4- hydroxybenzyl)-l,3,5-triazine-2,4,6(lH,3H,5H)-trione; l,l,3-Tris(2’-methyl-4’-hydroxy- 5’-t-butylphenyl)butane; Triethylene glycol bis[3-(3-t-butyl-4-hydroxy-5- methylphenyl)propionate]; 4,4’-Thiobis(2-t-butyl-5-methylphenol); 2,2’ -Thiodi ethylene bis[3-(3-t-butyl-4-hydroxyl-5-methylphenyl)propionate]; Octadecyl 3-(3’-t-butyl-4’- hydroxy-5’-methylphenyl)propionate; Tetrakismethylene(3- / -butyl-4-hydroxy-5- methylhydrocinnamate)methane; N,N ’-Hexamethylene bis[3-(3- / -butyl-4-hydroxy-5- methylphenyl)propionamide]; Di(4-tertiarybutyl-3-hydroxy-2,6-dimethyl benzyl) thiodipropionate; and octadecyl 3,5-di-(tert)-butyl-4-hydroxyhydrocinnamate; and mixtures thereof.

8. The stabilized polymer composition according to any one of claims 1 to 7, wherein the stabilizer composition comprises organic phosphite or phosphonite selected from: triphenyl phosphite; diphenyl alkyl phosphites; phenyl dialkyl phosphites; trilauryl phosphite;trioctadecyl phosphite; distearyl pentaerythritol phosphite; tris(2,4-di-tert-butylphenyl) phosphite; tris(nonylphenyl) phosphite; a compound of formulae (A), (B), (C), (D), (E), (F), (G), (H), (J), (K) and (L):(Q,(H),(L); and2-butyl-2-ethyl-l,3-propanediol 2,4,6-tri-t-butylphenol phosphite, bis-(2,6-di-t-butyl-4- methlphenyl) pentaerythritol diphosphite, 2-butyl-2-ethyl-l,3-propanediol 2,4-di- cumylphenol phosphite, 2-butyl-2-ethyl-l,3-propanediol 4-methyl-2,6-di-t-butylphenol phosphite, and bis-(2,4,6-tri-t-butyl-phenyl) pentaerythritol diphosphite, tris(2,4-di-tert- butylphenyl)phosphite; Bis(2,4-dicumylphenyl)pentaerythritol diphosphite; and tetrakis(2,4-di-tert-butylphenyl)4,4’-biphenylene-diphosphonite.

9. The stabilized polymer composition according to any one of claims 1 to 8, wherein the stabilizer composition comprises at least one thioester compound selected from the group consisting of dilauryl thiodipropionate, distearyl thiodipropionate, pentaerythrithol tetrakis-(3-dodecylthipropionate), tetra-alkyl thioethyl thiodisuccinate, 2,12-dihydroxy-4,10-dithia- 7-oxatridecamethylene bis[3-(dodecylthio)propionate], polyalkanol esters of alkylthio- alkanoic acids, and dialkyl 3,3 ’-thiodipropionates; and mixtures thereof.

10. The stabilized polymer composition according to any one of claims 1 to 9, wherein it further comprises at least one filler selected from ground or precipitated calcium carbonate (PCC), kaolin, mica, clay, wollastonite, glass fiber, alumina (AI2O3) and combinations thereof.

11. The stabilized polymer composition according to any one of the claims 1 to 10 wherein the stabilizer composition further comprises at least one organic UV absorber selected from an ortho-hydroxyl tris-aryl-s-triazine compound; 2-(2’-hydroxyphenyl) benzotriazoles; 2- hydroxybenzophenones; and benzoxazinones.

12. The stabilized polymer composition according to claim 11, wherein the ortho-hydroxyl tris- aryl-s-triazine compound is a 2-(2’-hydroxyphenyl)-l,3,5-triazine compound according to Formula (I):Formula (I), wherein each of R34 and R35 in Formula (I) is independently chosen from Ce-Cio aryl optionally substituted, C1-C10 hydrocarbyl-substituted amino, C1-C10 acyl and C1-C10 alkoxyl; and wherein R36 in Formula (I) is a substituent that is the same or different at from 0 to 4 positions of the phenoxy portion of Formula I and is independently chosen from hydroxyl, C1-C12 hydrocarbyl, C1-C12 alkoxyl, C1-C12 alkoxyester, and C1-C12 acyl.

13. The stabilized polymer composition according to claim 12, wherein the ortho-hydroxyl tris- aryl-s-triazine compound is selected from 2-(2’-hydroxyphenyl)-l,3,5-triazine compound is chosen from: 4,6-bis-(2,4-dimethylphenyl)-2-(2-hydroxy-4-octyloxyphenyl)-s-triazine; 4,6-bis-(2,4-dimethylphenyl)-2-(2,4— dihydroxyphenyl)-s-triazine; 2,4-bis(2,4- dihydroxyphenyl)-6-(4-chlorophenyl)-s-triazine; 2,4-bis[2-hydroxy-4-(2-hydroxy- ethoxy)phenyl]-6-(4-chlorophenyl)-s-triazine; 2,4-bis[2-hydroxy-4-(2-hydroxy-4-(2- hydroxy-ethoxy)phenyl]-6-(2,4-dimethylphenyl)-s-triazine; 2,4-bis[2-hydroxy-4-(2- hydroxyethoxy)phenyl]-6-(4-bromophenyl)-s-triazine; 2,4-bis[2-hydroxy-4-(2- acetoxyethoxy)phenyl]-6-(4-chlorophenyl)-s-triazine; 2,4-bis(2,4-dihydroxyphenyl)-6-(2,4- dimethylphenyl)-s-triazine; 2,4-bis(4-biphenylyl)-6-[2-hydroxy-4- [(octyloxycarbonyl)ethylideneoxy]phenyl]-s-triazine; 2,4-bis(4-biphenylyl)-6-[2-hydroxy- 4-(2-ethylhexyloxy)phenyl]-s-triazine; 2-phenyl-4-[2-hydroxy-4-(3-sec-butyloxy-2- hydroxypropyloxy)phenyl]-6-[2-hydroxy-4-(3-sec-amyloxy-2-hydroxypropyloxy)phenyl]- s-triazine; 2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxy-4(- 3 -benzyloxy -2- hydroxypropyloxy)phenyl]-s-triazine; 2,4-bis(2-hydroxy-4-n-butyloxyphenyl)-6-(2,4-di-n- butyloxyphenyl)-s-triazine; 2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxy-4-(3-nonyloxy-2- hydroxypropylox- y)-5-a-cumylphenyl]-s-triazine; methylenebis-{2,4-bis(2,4- dimethylphenyl)-6-[2-hydroxy-4-(3-butyloxy-2-hydroxypropoxy)phenyl]-s-tri azine}; methylene bridged dimer mixture bridged in the 3:5', 5:5' and 3:3' positions in a 5:4: 1 ratio;2.4.6-tris(2-hydroxy-4-isooctyloxycarbonyliso-propylideneoxy-phenyl)-s-triazine; 2,4- bis(2,4-dimethylphenyl)-6-(2-hydroxy-4-hexyloxy-5-a-cumylphenyl)-s-triazine; 2-(2,4,6- trimethylphenyl)-4,6-bis[2-hydroxy-4-(3-butyloxy-2-hydroxypropyloxy)phenyl]-s-tri azine;2.4.6-tris[2-hydroxy-4-(3-sec-butyloxy-2-hydroxypropyloxy)-phenyl]-s-triazine; mixture of4.6-bis-(2,4-dimethylphenyl)-2-(2-hydroxy-4-(3-dodecyloxy-2-hydroxypropoxy)phenyl)-s- triazine and 4,6-bis-(2,4-dimethylphenyl)-2-(2-hydroxy-4-(3-tridecyloxy-2- hydroxypropoxy)phenyl)-s-triazine; 4,6-bis-(2,4-dimethylphenyl)-2-(2-hydroxy-4(3-(2- ethylhexyloxy)-2-hydroxypropoxy)-phenyl)-s-triazine; 4,6-diphenyl-2-(4-hexyloxy-2- hydroxyphenyl)-s-triazine; 2-(4,6-Diphenyl-l,3,5-triazin-2-yl)-5-[2-(2- ethylhexanoyloxy)ethoxy]phenol; 2,4,6-tris(2-hydroxy-4-octyloxyphenyl)-l,3,5-triazine; propanoic acid, 2,2’,2”-[l,3,5-triazine-2,4,6-triyltris[(3-hydroxy-4, l-phenylene)oxy]]tris- 1,1’, 1” -trioctyl ester; propanoic acid, 2-[4-[4,6-bis([l,r-biphenyl]-4-yl)-l,3,5-triazin- 2yl]-3-hydroxyphenoxyl]-isooctyl ester; and combinations thereof.

14. The stabilized polymer composition of claim 11, wherein the 2-hydroxybenzophenone is at least one of 2-hydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone,2-hydroxy-4-octyloxybenzophenone, 2,2'-dihydroxy-4,4'-di-methoxybenzophenone, 2,2'-dihydroxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2,2'-dihydroxy-4,4'- dimethoxybenzophenone, 2,2'-dihydroxy-4,4'-diethoxybenzophenone, 2,2'-dihydroxy-4,4'- dipropoxybenzophenone, 2,2'-dihydroxy-4,4'-dibutoxybenzophenone, 2,2'-dihydroxy-4- methoxy-4'-ethoxybenzophenone, 2,2'-dihydroxy-4-methoxy-4'-propoxybenzophenone, 2,2'-dihydroxy-4-methoxy-4'-butoxybenzophenone, 2,2'-dihydroxy-4-ethoxy-4'- propoxybenzophenone, 2,2'-dihydroxy-4-ethoxy-4'-butoxybenzophenone, 2,3 '-dihydroxy - 4,4'-dimethoxybenzophenone, 2,3'-dihydroxy-4-methoxy-4'-butoxybenzophenone, 2-hydroxy-4,4',5'-trimethoxybenzophenone, 2-hydroxy-4,4',6'-tributoxybenzophenone, 2-hydroxy-4-butoxy-4',5'-dimethoxybenzophenone, 2-hydroxy-4-ethoxy-2',4'- dibutylbenzophenone, 2-hydroxy-4-propoxy-4',6'-di chlorobenzophenone, 2-hydroxy-4- propoxy-4',6'-dibromobenzophenone, 2,4-dihydroxybenzophenone, 2-hydroxy-4- ethoxybenzophenone, 2-hydroxy-4-propoxybenzophenone, 2-hydroxy-4- butoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4- methoxy-4'-ethylbenzophenone, 2-hydroxy-4-methoxy-4'-propylbenzophenone, 2-hydroxy- 4-methoxy-4'-butylbenzophenone, 2-hydroxy-4-methoxy-4'- / c / 7-biitylbenzophenone, 2- hydroxy-4-methoxy-4'-chlorobenzophenone, 2-hydroxy-4-methoxy-2'- chlorobenzophenone, 2-hydroxy-4-methoxy-4'-bromobenzophenone, 2-hydroxy-4,4'- dimethoxybenzophenone, 2-hydroxy-4,4'-dimethoxy-3 -methylbenzophenone, 2-hydroxy- 4,4'-dimethoxy-2'-ethylbenzophenone, 2-hydroxy-4,4',5'-trimethoxybenzophenone, 2- hydroxy-4-ethoxy-4'-methylbenzophenone, 2-hydroxy-4-ethoxy-4'-ethylbenzophenone, 2-hydroxy-4-ethoxy-4'-propylbenzophenone, 2-hydroxy-4-ethoxy-4'-butylbenzophenone, 2-hydroxy-4-ethoxy-4'-methoxybenzophenone, 2-hydroxy-4,4'-di ethoxybenzophenone, 2-hydroxy-4-ethoxy-4'-propoxybenzophenone, 2-hydroxy-4-ethoxy-4'- butoxybenzophenone, 2-hydroxy-4-ethoxy-4'-chlorobenzophenone, or 2-hydroxy-4- ethoxy-4'-bromobenzophenone.

15. The stabilized polymer composition of claim 11, wherein the 2-(2'-hydroxyphenyl)benzotriazole is at least one of 2-(2'-hydroxy-5'- methylphenyl)benzotriazole, 2-(2'-hydroxy-5'-tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-3'-methyl-5'-tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-5'- cyclohexylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-dimethylphenyl)benzotriazole,2-(2'-hydroxy-5'-tert-butylphenyl)-5-chloro-benzotriazole, 2-(2'-hydroxy-5'-tert- octylphenyl)benzotriazole, 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3',5'-di-tert-amyl-2'-hydroxyphenyl)benzotriazole, 2-(3',5'-bis(a,a-dimethylbenzyl)-2'- hydroxyphenyl)benzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2- octyloxycarbonylethyl)phenyl)benzotriazole, 2,2'-methylenebis[4-(l,l,3,3- tetramethylbutyl)-6-benzotriazole-2-ylphenol], the transesterification product of 2-[3'-tert- butyl-5'-(2 -methoxy carbonylethyl)-2'-hydroxyphenyl]-2H-benzotriazole with polyethylene glycol 300 (TINUVIN™ 1130), 2-[2'-hydroxy-3'-(a,a-dimethylbenzyl)-5'-(l, 1,3,3- tetramethylbutyl)phenyl]benzotriazole, 5-trifluoromethyl-2-(2-hydroxy-3-a-cumyl-5-tert- octylphenyl)benzotriazole, 2-(2'-hydroxy-5'-(2-hydroxyethyl)phenyl)benzotriazole, 2-(2'-hydroxy-5'-(2-methacryloyloxyethyl)phenyl)benzotriazole, 2-(2'-hydroxy-3'-tert- butyl-5'-methylphenyl)-5-chlorobenzotriazole, 2-(3'-sec-butyl-5'-tert-butyl-2'- hydroxyphenyl)benzotriazole, 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(3'-dodecyl-5'-methyl-2'-hydroxyphenyl)-benzotriazole, 2-(3'-tert-butyl-5'-(2- octyloxycarbonylethyl)-2'-hydroxyphenyl)-5-chlorobenzotriazole, 2-(5'-methyl-2'- hydroxyphenyl)benzotriazole, or 2-(5'-tert-butyl-2'-hydroxyphenyl)benzotriazole.

16. The stabilized polymer composition of claim 11, wherein the benzoxazinone is at least one of 2-methyl-3,l-benzoxazin-4-one, 2-butyl-3,l-benzoxazin-4-one, 2-phenyl-3,l- benzoxazin-4-one, 2-(l- or 2-naphthyl)-3,l-benzoxazin-4-one, 2-(4-biphenyl)-3,l- benzoxazin-4-one, 2- / ?-nitrophenyl-3, l-benzoxazin-4-one, 2-m-nitrophenyl-3, 1- benzoxazin-4-one, 2- / ?-benzoylphenyl-3, l-benzoxazin-4-one, 2- / ?-methoxyphenyl-3, 1- benzoxazin-4-one, 2-O-methoxyphenyl-3,l-benzoxazin-4-one, 2-cyclohexyl-3,l- benzoxazin-4-one, 2- / ?-(or m-)phthal imidephenyl -3,1 -benzoxazin-4-one, N-phenyl-4-(3,l- benzoxazin-4-one-2-yl)phthalimide, N-benzoyl-4-(3, l-benzoxazine-4-one-2-yl)aniline, N- benzoyl-N-methyl-4-(3,l-benzoxazin-4-one-2-yl)-aniline, 2-[p-(N- phenylcarbamonyl)phenyl]-3,l-benzoxazin-4-one, 2-[p-(N-phenyl N- methylcarbamoyl)phenyl]-3,l-benzoxazin-4-one, 2,2'-bis(3,l-benzoxazin-4-one), 2,2'-ethylenebis(3, l-benzoxazin-4-one), 2,2'-tetramethylenebis(3, l-benzoxazin-4-one), 2,2'-hexamethylenebis(3, l-benzoxazin-4-one), 2,2'-decamethylenebis(3, l-benzoxazin-4- one), 2,2'-p-phenylenebis(3,l-benzoxazin-4-one), 2,2'-m-phenylenebis(3,l-benzoxazin-4- one), 2,2'-(4,4'-diphenylene)bis(3,l-benzoxazin-4-one), 2,2'-(2,6-or 1,5-naphthal ene)bis(3 J -benzoxazin-4-one), 2,2'-(2-methyl- / ?-phenylene)bis(3,l-benzoxazin-4- one), 2,2'-(2-nitro- / ?-phenylene)bis(3,l-benzoxazin-4-one), 2,2'-(2-chloro- / ?- phenylene)bis(3,l-benzoxazin-4-one), 2,2'-(l,4-cyclohexylene)bis(3,l-benzoxazin-4-one), N- / ?-(3,l-benzoxazin-4-on-2-yl)phenyl, 4-(3,l-benzoxazin-4-on-2-yl)phthalimide, N-p- (3,l-benzoxazin-4-on-2-yl)benzoyl, 4-(3,l-benzoxazin-4-on-2-yl)aniline, 1 ,3,5-tri(3, 1 - benzoxazin-4-on-2-yl)benzene, l,3,5-tri(3,l-benzoxazin-4-on-2-yl)naphthalene, or 2,4,6- tri(3,l-benzoxazin-4-on-2-yl)naphthalene.

17. The stabilized polymer composition according to any one of claims 1 to 16, wherein the stabilizer composition further comprises a hindered hydroxybenzoate compound according to Formula (III):Formula (III), wherein R17 in Formula (III) is a Ci-Cs alkyl and Ris in Formula (III) is a C1-C24 alkyl or substituted or unsubstituted C6-C24 aryl.

18. The stabilized polymer composition according to claim 17, wherein the hindered hydroxybenzoate compound is selected from the group consisting of 2,4-di-tert- butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate; hexadecyl 3,5-di-tert-butyl-4- hydroxybenzoate; octadecyl 3,5-di-tert-butyl-4-hydroxybenzoate; octyl 3,5-di-tert-butyl-4- hydroxybenzoate; tetradecyl 3,5-di-tert-butyl-4-hydroxybenzoate; behenylyl 3,5-di-tert- butyl-4-hydroxybenzoate; 2-methyl-4,6-di-tert-butylphenyl 3,5-di-tert-butyl-4- hydroxybenzoate and butyl 3-[3-t-butyl-4-(3,5-di-t-butyl-4- hydroxybenzoyloxy)phenyl]propionate; and mixtures thereof.

19. The stabilized polymer composition according to any one of claims 1 to 18, wherein the stabilizer composition further comprises an acid scavenger, preferably selected from the group consisting of calcium lactate, natural and synthetic hydrotalcites, natural andsynthetic hydrocalumites, alkali metal salts and alkaline earth metal salts of higher fatty acids, calcium stearate, zinc stearate, magnesium behenate, magnesium stearate, sodium stearate, sodium ricinoleate and potassium palmitate, antimony pyrocatechol ate, zinc pyrocatecholate and mixtures thereof.

20. The stabilized polymer composition according to any one of claims 1 to 19, wherein the stabilizer composition further comprises a N,N-dihydrocarbylhydroxylamines of the general formula RIR2N(0H), wherein Ri and R2 are independently benzyl, methyl, ethyl, octyl, lauryl, dodecyl, tetradecyl, hexadecyl, heptadecyl or octadecyl, or wherein Ri and R2 are each the alkyl mixture found in hydrogenated tallow amine.

21. The stabilized polymer composition according to any one of claims 1 to 20, wherein it further comprises a co-additive selected from the group consisting of nucleating agents, metallic stearates, reinforcing agents, plasticizers, lubricants, rheology agents, catalysts, leveling agents, optical brighteners, anti-static agents, blowing agents, dyes, pigments, thioesters, hydroxylamines, trialkylamine oxides, benzofuranones, nitrones, and mixtures thereof.

22. The stabilized polymer composition according to any one of claims 1 to 21, wherein the stabilizer composition is a master batch and the stabilizers are present in an amount from about 10 wt.% to about 90 wt. %, in particular from about 30 wt.% to about 60 wt. %, preferably between about 40 wt.% to about 50 wt. %, based on a total weight of the master batch composition, and the material to be stabilized is present in an amount from about 20 wt.% to about 80 wt.%, in particular from about 40 wt.% to about 70 wt.%, preferably between about 50 wt.% to about 60 wt.%, based on the total weight of the master batch composition.

23. The stabilized polymer composition according to any one of claims 1 to 22, wherein an organic polymeric material to be stabilized is selected from the group consisting of: polyolefins, polyesters, polyethers, polyketones, polyamides, natural and synthetic rubbers, polyurethanes, polystyrenes, high-impact polystyrenes, polyacrylates, polymethacrylates, polyacetals, polyacrylonitriles, polybutadienes, polystyrenes, acrylonitrile-butadiene- styrene, styrene acrylonitrile, acrylate styrene acrylonitrile, cellulosic acetate butyrate, cellulosic polymers, polyimides, polyamideimides, polyetherimides, polyphenylsulfides,polyphenyloxidepolysulfones, polyethersulfones, polyvinylchlorides, polycarbonates, polyketones, aliphatic polyketones, thermoplastic olefins, aminoresin cross-linked polyacrylates and polyesters, polyisocyanate cross-linked polyesters and polyacrylates, phenol / formaldehyde, urea / formaldehyde and melamine / formaldehyde resins, drying and non-drying alkyd resins, alkyd resins, polyester resins, acrylate resins cross-linked with melamine resins, urea resins, isocyanates, isocyanurates, carbamates, and epoxy resins, cross-linked epoxy resins derived from aliphatic, cycloaliphatic, heterocyclic and aromatic glycidyl compounds, which are cross-linked with anhydrides or amines, polysiloxanes, Michael addition polymers, amines, blocked amines with activated unsaturated and methylene compounds, ketimines with activated unsaturated and methylene compounds, polyketimines in combination with unsaturated acrylic polyacetoacetate resins, polyketimines in combination with unsaturated acrylic resins, radiation curable compositions, epoxymelamine resins, organic dyes, cosmetic products, cellulose-based paper formulations, photographic film paper, fibers, waxes, inks, and blends thereof.

24. The stabilized polymer composition according to claim 23, wherein the organic polymeric material to be stabilized is selected from the group consisting of polyolefins, thermoplastic polyolefins, acrylonitrile-butadiene-styrene, polyesters, polyvinylchloride, polyamides, polyurethanes, or homo- and copolymers of propylene, isobutylene, butene, methylpentene, hexene, heptene, octene, isoprene, butadiene, hexadiene, dicyclopentadiene, ethylidene, cyclopentene and norbornene.

25. The stabilized polymer composition of claim 24, wherein the polymeric organic material to be stabilized is a polyolefin selected from the group consisting of i) polymers of monoolefms chosen from polyethylene, polypropylene, polyisobutylene, polybut-l-ene, or poly-4-methylpent-l-ene; ii) polymers of di olefins chosen from polyisoprene or polybutadiene; iii) polymers of cycloolefins chosen from cyclopentene or norbornene; iv) polyethylene chosen from optionally crosslinked polyethylene, high density polyethylene (HDPE), high density and high molecular weight polyethylene (HDPE-HMW), high density and ultrahigh molecular weight polyethylene (HDPE-UHMW), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), very low density polyethylene (VLDPE), or ultralow density polyethylene(ULDPE); v) thermoplastic polyolefins (TPO); vi) polyolefin elastomers (POE); vii) copolymers thereof; and viii) mixtures thereof.

26. The stabilized polymer composition according to any one of claims 1 to 25, wherein the stabilizer composition comprises a ratio of inorganic UV blocker to a remainder of organic stabilizers excluding the flame retardant comprising the stabilizer composition is froml : 10 to 200: 1, and more preferably from 1:5 to 100:1.

27. The stabilized polymer composition according to any one of claims 1 to 26, wherein the stabilizer composition is present in an amount from 0.01 wt. % to 50 wt. %, preferably from 0.05 wt. % to 30 wt. %, based on a total weight of the stabilized polymer composition.

28. The stabilized polymer composition according to any one of claims 1 to 27, wherein an amount of the at least one hindered amine light stabilizer compound is from about 0.01 wt.% to about 1.50 wt.%, an amount of the at least one thioester is from about 0.001 wt.% to about 1.0 wt.%, an amount of the at least one hindered phenol antioxidant compound is from about 0.001 wt.% to about 0.50 wt.%, and an amount of the at least one phosphite or phosphonite compound is from about 0.005 wt.% to about 1.00 wt.% based on the total weight of the stabilized polymer composition.

29. A process for making stabilized article, the process comprising adding the stabilized polymer composition of any one of claims 1 to 28 to a device, material or process for performing industrial molding; industrial fiber making; industrial tape; and extruded sheets.

30. The process according to claim 29, wherein the device or process for industrial molding is chosen from injection molding, rotomolding, blow molding, reel-to-reel molding, metal injection molding, compression molding, transfer molding, dip molding, gas assist molding, insert injection molding, micro molding, reaction injection molding, and two shot injection molding.

31. The process according to claim 29 or 30, wherein the material to be stabilized is vinyl siding, vinyl siding trim, a shutter, a gable vent, an eave, fascia, a soffit, a molding, a roofing shingle, a roofing underlayment, a roofing membrane, a batten systems, a batten extender, flashing, a tile pan, a ridge vent, a weather block, a hip and ridge system, an eaveriser, a taper strip, a gable end wedge, rake trim, a geomembrane, a composite deck material, a railing or a window frame.

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