Method for stabilizing transition metal-containing plastics, stabilized transition metal-containing plastic compositions, molding compounds or molded articles, and use of the stabilizer composition for stabilizing transition metal-containing plastics - Patents.com

Abstract

The present invention relates to a method for stabilizing transition metal-containing plastics against oxidative, thermal and / or actinic degradation, in which at least one sugar alcohol is introduced into the transition metal-containing plastic in combination with at least one phenolic antioxidant, the method being carried out in such a way that the resulting plastic composition to which the additive is added has a total transition metal content of at least 10 ppm (wt / wt).The invention also relates to the stabilized plastic compositions produced by the method, to molding compounds and molded articles which can be produced from said compositions, and to the use of a stabilizer combination consisting of at least one sugar alcohol and at least one phenolic antioxidant for the stabilization of transition metal-containing plastics.

Description

[Technical field]

[0001] The present invention relates to a method for stabilizing transition metal-containing plastics against oxidative, thermal and / or actinic degradation, in which at least one sugar alcohol is introduced into the transition metal-containing plastic in combination with at least one phenolic antioxidant. The method is carried out such that the resulting additive-containing plastic composition has a total transition metal content of at least 10 ppm (wt / wt). The present invention also relates to the stabilized plastic composition produced by this method, to molding compounds or molded articles which can be produced therefrom, and to the use of the stabilizer combination of at least one sugar alcohol and at least one phenolic antioxidant for stabilizing transition metal-containing plastics. [Background technology]

[0002] Organic materials, such as plastics, undergo an ageing process that eventually results in the loss of desired properties, such as mechanical property values. This process is called autoxidation and leads to changes in the polymer chains, such as changes in molecular weight and the formation of new chemical groups, starting from mechanochemical processes or radical chain scission by UV irradiation in the presence of oxygen. Stabilizers are therefore used to prevent or at least slow down this ageing. Important representatives of stabilizers are antioxidants, which interfere with the radicals formed during autoxidation and interrupt the decomposition process. In general, antioxidants are classified into primary antioxidants, which can react directly with oxygen-containing free radicals and carbon radicals (C radicals), and secondary antioxidants, which react with hydroperoxides generated intermediately (see C.Kroehnke et al.Antioxidants in Ullmann's encyclopedia of industrial chemistry, Wiley-VCH Verlag, Weinheim 2015). Representative primary antioxidants are phenolic antioxidants, amine antioxidants, lactone antioxidants, etc. Secondary antioxidants include phosphorus compounds such as phosphites and phosphonites, and organic sulfur compounds such as thioesters, triesters, and disulfides. In general, primary and secondary antioxidants are used in combination to produce a synergistic effect.

[0003] Methods for stabilizing plastics or plastic recyclates are known from patent applications WO2020 / 083740 and WO2019 / 063550, in which alditols may be used as co-stabilizers under certain conditions, however, the plastic formulations described in these patent applications are not stated to contain transition metals.

[0004] US2003 / 2363250 describes polymers containing transition metals for agricultural film applications, which may contain hydroxycarboxylic acids such as erythritol, arabino, and mannitol. These are sugar acids, and therefore structurally different from the alditols of the present invention, and there is no suggestion of a metal deactivation effect. There is also a need for an effect of decomposing the polymer, i.e., the opposite effect to that of the present invention.

[0005] The presence of transition metals in plastic mixtures poses challenges in the stabilization of plastics. Transition metals can catalyze autoxidation processes and, as a consequence, accelerate the oxidative damage of polymers. To prevent or mitigate the effects of transition metals, so-called metal deactivators are used in plastic formulations (see: Z. Osawa, Role of metals and metal-deactivators in polymer degradation, Polymer Degradation and Stability (1988), 20(3-4), 203-36). Summary of the Invention

[0006] In view of this, it was an object of the present invention to provide an effective stabilization of transition metal-containing plastics which is readily available and therefore particularly cost-effective.

[0007] This object is achieved by means of the features of the independent claims. Advantageous developments are set out in the respective dependent claims.

[0008] In a first aspect, the present invention relates to a method for stabilizing at least one transition metal-containing plastic against oxidative, thermal and / or actinic degradation, in which at least one sugar alcohol (component (A)) and at least one phenolic antioxidant (component (B)) are introduced into the at least one transition metal-containing plastic, such that the total transition metal content in the resulting at least one transition metal-containing plastic composition is at least 10 ppm (wt / wt), wherein the at least one transition metal is selected from the group consisting of metals of groups 6, 7, 8, 9, 10 and 11 of the periodic table.

[0009] Surprisingly, it has been found that the stabilizer composition used, namely the combination of at least one sugar alcohol (component (A)) and at least one phenolic antioxidant (component (B)), results in a significant stabilization of the transition metals contained in the plastic composition. A new stabilizer composition and a new method are proposed, in particular for stabilizing plastics. The method is highly effective for polymers containing transition metals and is particularly cost-effective compared to the prior art.

[0010] A transition metal-containing plastic is defined herein as a plastic having a total transition metal content of at least 10 ppm (wt / wt).

[0011] It is understood that this minimum concentration of transition metal is preferably at least 50 ppm (wt / wt), more preferably at least 100 ppm (wt / wt). Alternatively or in addition, the total content of at least one transition metal can be at most 10,000 ppm, preferably at most 5,000 ppm, more preferably at most 2,000 ppm, particularly preferably at most 1,000 ppm.

[0012] The concentration data regarding the transition metal content herein should be understood in the context of the resulting plastic composition, i.e. the composition produced by introducing the stabilizer combination into a plastic containing at least one transition metal.

[0013] In principle, the transition metals may include metals with atomic number 24 (chromium) up to atomic number 79 (gold) (with the exception of the transition metals of groups 3, 4, 5 and 12 of the periodic table). Preferred are the transition metals Cr, Mn, Fe, Co, Ni, Cu, Mo, particularly preferred are Fe, Co, Ni, Cu, Cr, Mn. The plastic contains more than 10 ppm, preferably more than 50 ppm, very preferably more than 100 ppm of transition metals, preferably in ionic form.

[0014] Metals from group 6 of the periodic table are also preferably excluded herein from the definition of at least one transition metal. Thus, metals from the titanium, vanadium and chromium groups are not included in the definition of the term "transition metal" and are excluded from the calculation of the total transition metal content.

[0015] The ionic metal content in the polymer can be introduced either through contact with the metal, for example in cables or coatings, or through additives such as fillers. In particular, the commonly used fillers of natural origin often contain transition metals. Transition metals can also be introduced into the polymer through additives such as pigments that contain catalyst residues from production.

[0016] According to a preferred embodiment, the at least one sugar alcohol is selected from the group consisting of alditols, cyclitols, or mixtures and combinations thereof.

[0017] In particular, alditols that can be used according to the invention have the empirical formula HOCH2[CH(OH)] n CHOH, R1-OCH2[CH(OH)] n CHOH, or HOCH2[CH(OH)] n [CH(OR1)]CH2OH, n=2 to 6, preferably n=3 to 5, and R1 is an optionally substituted sugar residue.

[0018] The alditols are particularly preferably selected from the group consisting of threitol, erythritol, galactitol, mannitol, ribitol, sorbitol, xylitol, arabitol, isomalt, lactitol, maltitol, altritol, iditol, maltotritol and hydrogenated oligo- and polysaccharides having polyol end groups and mixtures thereof, heptitols and octitols, in particular meso-glyceroallo-heptitol, D-glycero-D-altro-heptitol, D-glycero-D-manno-heptitol, meso-glycero-glo-heptitol, D-glycero-D-galacto-heptitol (persitol), D-glycero-D-gluco-heptitol, L-glycero-D-gluco-heptitol, D-erythro-L-galacto-octitol and D-threo-L-galacto-octitol. The at least one alditol here is preferably selected from the group consisting of erythritol, mannitol, isomalt, maltitol and mixtures thereof.

[0019] Preferred cyclitols usable for the purposes of the present invention are selected here from the group consisting of inositol (myo, scyllo-, D-chiro-, L-chiro-, muco-, neo-, allo-, epi- and cis-inositol), 1,2,3,4-tetrahydroxycyclohexane, 1,2,3,4,5-pentahydroxycyclohexane, quercitol, biscumitol, bornesitol, chondritol, ononitol, pinitol, pinpollitol, quebrachitol, cisceritol, quinic acid, shikimic acid and valienol, preferably myo-inositol.

[0020] The phenolic antioxidant is selected from the following group: Alkylated monophenols, such as 2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-dimethylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol, 2,6-di-tert-butyl-4-isobutylphenol, 2,6-dicyclopentyl-4-methylphenol, 2-(α-methylcyclohexyl)-4,6-dimethylphenol, 2,6-dioctadecyl-4 -methylphenol, linear or branched nonylphenols such as 2,4,6-tricyclohexylphenol, 2,6-di-tert-butyl-4-methoxymethylphenol, 2,6-dinonyl-4-methylphenol, 2,4-dimethyl-6-(1'-methylundec-1'-yl)phenol, 2,4-dimethyl-6-(1'-methylheptadec-1'-yl)phenol, 2,4-dimethyl-6-(1'-methyltridec-1'-yl)phenol and mixtures thereof; Alkylthiomethylphenols, such as 2,4-dioctylthiomethyl-6-tert-butylphenol, 2,4-dioctylthiomethyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ethylphenol, 2,6-didodecylthiomethyl-4-nonylphenol; Hydroquinone and alkylated hydroquinones, such as 2,6-di-tert-butyl-4-methoxyphenol, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,6-diphenyl-4-octadecyloxyphenol, 2,6-di-tert-butylhydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyphenyl stearate, bis(3,5-di-tert-butyl-4-hydroxyphenyl)adipate; Tocopherols, such as α-, β-, γ-, 6-tocopherol and mixtures thereof (vitamin E), also tocopherol acetate; Hydroxylated thiodiphenyl ethers, such as 2,2'-thiobis(6-tert-butyl-4-methylphenol), 2,2'-thiobis(4-octylphenol), 4,4'-thiobis(6-tert-butyl-3-methylphenol), 4,4'-thiobis(6-tert-butyl-2-methylphenol), 4,4'-thiobis(3,6-di-sec-amylphenol), 4,4'-bis(2,6-dimethyl-4-hydroxyphenyl) disulfide; Alkylidene bisphenols, for example, 2,2'-methylenebis(6-tert-butyl-4-methylphenol), 2,2'-methylenebis(6-tert-butyl-4-ethylphenol), 2,2'-methylenebis[4-methyl-6-(α-methylcyclohexyl)phenol], 2,2'-methylenebis(4-methyl-6-cyclohexylphenol), 2,2'-methylenebis(6-nonyl-4-methylphenol), 2,2'-methylenebis(4,6-di-tert-butylphenol), 2,2'-ethylidenebis(4, 6-di-tert-butylphenol), 2,2'-ethylidenebis(6-tert-butyl-4-isobutylphenol), 2,2'-methylenebis[6-(α-methylbenzyl)-4-nonylphenol], 2,2'-methylenebis[6-(α,α-dimethylbenzyl)-4-nonylphenol], 4,4'-methylenebis(2,6-di-tert-butylphenol), 4,4'-methylenebis(6-tert-butyl-2-methylphenol), 1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butanol 2,6-bis(3-tert-butyl-5-methyl-2-hydroxybenzyl)-4-methylphenol, 1,1,3-tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)-3-n-dodecylmercaptobutane, ethylene glycol-bis[3,3-bis(3'-tert-butyl-4'-hydroxyphenyl)butyrate], bis(3-tert-butyl-4-hydroxy-5-methylphenyl)dicyclopentadiene , bis[2-(3'-tert-butyl-2'-hydroxy-5'-methylbenzyl)-6-tert-butyl-4-methylphenyl]terephthalate, 1,1-bis(3,5-dimethyl-2-hydroxyphenyl)butane, 2,2-bis(3,5-di-tert-butyl-4-hydroxyphenyl)propane, 2,2-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)-4-n-dodecylmercaptobutane, 1,1,5,5-tetra(5-tert-butyl-4-hydroxy-2-methylphenyl)pentane; O-, N-, S-benzyl compounds, such as 3,5,3',5'-tetra-tert-butyl-4,4'-dihydroxydibenzyl ether, octadecyl-4-hydroxy-3,5-dimethylbenzyl mercaptoacetate, tridecyl-4-hydroxy-3,5-di-tert-butylbenzyl mercaptoacetate, tris(3,5-di-tert-butyl-4-hydroxybenzyl)amine, bis(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)dithioterephthalate, bis(3,5-di-tert-butyl-4-hydroxybenzyl)sulfide, isooctyl-3,5-di-tert-butyl-4-hydroxybenzyl mercaptoacetate; Hydroxybenzylated malonic acid esters, such as dioctadecyl-2,2-bis(3,5-di-tert-butyl-2-hydroxybenzyl)malonic acid ester, dioctadecyl-2-(3-tert-butyl-4-hydroxy-5-methylbenzyl)malonic acid ester, didodecylmercaptoethyl-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonic acid ester, bis[4-(1,1,3,3-tetramethylbutyl)phenyl]-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonic acid ester; Aromatic hydroxybenzyl compounds, such as 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1,4-bis(3,5-di-tert-butyl-4-hydroxybenzyl)-2,3,5,6-tetramethylbenzene, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)phenol; Triazine compounds, such as 2,4-bis(octylmercapto)-6-(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,3,5-triazine, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,2,3-triazine, 1,3,5- Tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenylethyl)-1,3,5-triazine, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexahydro-1,3,5-triazine, 1,3,5-tris(3,5-dicyclohexyl-4-hydroxybenzyl)isocyanurate; Benzylphosphonates, such as dimethyl-2,5-di-tert-butyl-4-hydroxybenzylphosphonate, diethyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl-5-tert-butyl-4-hydroxy-3-methylbenzylphosphonate, calcium salts of the monoethyl ester of 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid; Acylaminophenols, such as 4-hydroxylauranilide, 4-hydroxystearanilide, octyl N-(3,5-di-tert-butyl-4-hydroxyphenyl)carbamate; Esters of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid with mono- or polyhydric alcohols, such as methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane; Esters of β-(5-tert-butyl-4-hydroxy-3-methylphenyl)propionic acid with monohydric or polyhydric alcohols, such as methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isopropyl alcohol, socyanurate, N,N'-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane, 3,9-bis[2-{3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane; Esters of β-(3,5-dicyclohexyl-4-hydroxyphenyl)propionic acid with mono- or polyhydric alcohols, such as methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane; Esters of (3,5-di-tert-butyl-4-hydroxyphenyl)acetic acid with mono- or polyhydric alcohols, for example, methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane; Amides of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, such as N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylenediamide, N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylenediamide, N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylenediamide, N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hydrazide, N,N'-bis[2-(3-[3,5-di-tert-butyl-4-hydroxyphenyl]propionyloxy)ethyl]oxamide (Naugard® XL-1, available from Uniroyal); Ascorbic acid (vitamin C).

[0021] A particularly preferred phenolic antioxidant has the following structure: [ka] [ka] [ka]

[0022] Furthermore, particularly preferred phenolic antioxidants are based on sustainable sources, such as, for example, tocopherols (vitamin E), tocotrienols, tocomonoenols, carotenoids, hydroxytyrosol, flavonols (e.g. chrysin, quercetin, hesperidin, neohesperidin, naringin, morin, camphor oil, fisetin), anthocyanins (e.g. delphinidin and malvidin), curcumin, carnosic acid, carnosol, rosmarinic acid, resveratrolurid tannine, etc.

[0023] According to a further preferred embodiment, components (A) and (B) are introduced into the plastic containing at least one transition metal in a weight ratio of 90:10 to 10:90, preferably 80:20 to 20:80, particularly preferably 70:30 to 30:70.

[0024] Components (A) and (B) may be introduced into the plastic containing at least one transition metal, for example, by mixing components (A) and (B) present in solid or liquid form with a plastic containing at least one transition metal present as a solid, melting the resulting mixture and then cooling, or by melting components (A) and (B) present in solid or liquid form and introducing the resulting melt into a melt of the plastic containing at least one transition metal.

[0025] Here, it is preferable to introduce at least one type of sugar alcohol (component (A)) in a proportion of 0.01 to 5.0 parts by weight, preferably 0.02 to 1.0 parts by weight, into a plastic containing at least one type of transition metal (95.0 to 99.99 parts by weight, preferably 99.0 to 99.98 parts by weight).

[0026] In particular, for a plastic containing at least one transition metal (91 to 99.94 parts by weight, preferably 98.5 to 99.91 parts by weight), (A) at least one sugar alcohol in a proportion of 0.02 to 3 parts by weight, preferably 0.03 to 0.5 parts by weight, and It is advantageous to incorporate (B) at least one phenolic antioxidant in a proportion of 0.04 to 6 parts by weight, preferably 0.06 to 1 part by weight.

[0027] The plastic comprising at least one transition metal may be selected from the group consisting of: a) polymers of olefins or diolefins, such as polyethylene (in particular LDPE, LLDPE, VLDPE, ULDPE, MDPE, HDPE and UHMWPE), metallocene-PE (m-PE), polypropylene, polyisobutylene, poly-4-methyl-pentene-1, polybutadiene, polyisoprene, polycyclooctene, polyalkylene-carbon monoxide copolymers and the corresponding copolymers of random or block structure (e.g. polypropylene-polyethylene (EP), EPM or EPDM, ethylene-vinyl acetate (EVA), ethylene-butyl acrylate, ethylene-acrylic acid esters such as ethylene-acrylic acid-glycidyl acrylate) and the corresponding graft polymers (e.g. polypropylene-graft-maleic anhydride, polypropylene-graft-acrylic acid, polyethylene-graft-acrylic acid, polyethylene-polybutyl acrylate-graft-maleic anhydride) and blends such as LDPE / LLDPE, or long chain branched polypropylene copolymers made with α-olefins such as 1-butene, 1-hexene, 1-octene or 1-octadecene as comonomers. b) Polystyrene, polymethylstyrene, polyvinylnaphthalene, styrene-butadiene (SB), styrene-butadiene-styrene (SBS), styrene-ethylene-butylene-styrene (SEBS), styrene-ethylene-propylene-styrene, styrene-isoprene, styrene-isoprene-styrene (SIS), styrene-butadiene-acrylonitrile (ABS), styrene-acrylonitrile-acrylate (ASA), styrene-ethylene, styrene-maleic anhydride polymers (including the corresponding graft copolymers, e.g., styrene on butadiene, maleic anhydride on SBS or SEBS, and graft copolymers of methyl methacrylate, styrene butadiene and ABS (MABS)), as well as hydrogenated polystyrene derivatives such as polyvinylcyclohexane. c) Halogen-containing polymers, such as polyvinyl chloride (PVC), polychloroprene, polyvinylidene chloride (PVDC), copolymers of vinyl chloride and vinylidene chloride or vinyl acetate, chlorinated polyethylene, polyvinylidene fluoride, homopolymers and copolymers of epichlorohydrin (especially copolymers with ethylene oxide (ECO)). d) Polymers of unsaturated esters, such as polyacrylates and polymethacrylates (e.g., polymethyl methacrylate (PMMA), polybutyl acrylate, polylauryl acrylate, polystearyl acrylate, polyglycidyl acrylate, polyglycidyl methacrylate), polyacrylonitrile, polyacrylamide, copolymers of polyacrylonitrile-polyalkyl acrylates, and the like. e) Polymers of unsaturated alcohols and their derivatives, such as polyvinyl alcohol, polyvinyl acetate, polyvinyl butyral, polyallyl phthalate, polyallyl melamine. f) Polyacetals, such as polyoxymethylene (POM), and their corresponding copolymers, such as those containing butanal. g) Polyphenylene oxides and their blends with polystyrene or polyamides. h) Polymers of cyclic ethers, for example, polyethylene glycol, polypropylene glycol, polyethylene oxide, polypropylene oxide, polytetrahydrofuran. i) Polyurethanes, based on hydroxy-terminated polyethers or polyesters and aromatic or aliphatic isocyanates (e.g. 2,4- or 2,6-toluene diisocyanate, or methylene diphenyl diisocyanate), especially linear polyurethanes (PU), polyureas. j) polyamides, such as polyamide 6, 6.6, 6.10, 4.6, 4.10, 6.12, 10.10, 10.12, 12.12, polyamide 11, polyamide 12, and (partially) aromatic polyamides (such as, for example, polyphthalamides), such as, for example, polyamides made from terephthalic acid and / or isophthalic acid and aliphatic diamines, such as hexamethylenediamine or m-xylylenediamine, or from aliphatic dicarboxylic acids, such as adipic acid or sebacic acid, and from aromatic diamines, such as 1,4- or 1,3-diaminobenzene, or blends of different polyamides (for example PA-6 and PA6.6) or blends of polyamides with polyolefins (for example PA / PP). k) Polyimides, polyamideimides, polyetherimides, polyesterimides, poly(ether)ketones, polysulfones, polyethersulfones, polyarylsulfones, polyphenylene sulfides, polybenzimidazoles, polyhydantoins. l) Polyesters of aliphatic or aromatic dicarboxylic acids and diols, or polyesters of hydroxycarboxylic acids, such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene terephthalate, polyethylene naphthylate, poly-1,4-dimethylolcyclohexane terephthalate, polyhydroxybenzoates, polyhydroxynaphthalates, polylactic acid, polyhydroxybutyrate (PHB), polyhydroxyvalerate (PHV), polyethylene succinate, polytetramethylene succinate, polycaprolactone. m) Polycarbonates, polyester carbonates, and blends thereof, such as PC / ABS, PC / PBT, PC / PET / PBT, PC / PA. n) Cellulose derivatives, such as cellulose nitrate, cellulose acetate, cellulose propionate, cellulose butyrate. o) Epoxy resins based on di- or polyfunctional epoxy compounds in combination with hardeners based, for example, on amines, anhydrides, dicyandiamide, mercaptans, isocyanates or catalytically active hardeners. p) Phenolic resins, such as phenol-formaldehyde resins, urea-formaldehyde resins, melamine-formaldehyde resins, etc. q) Unsaturated polyester resins, which consist of unsaturated dicarboxylic acids and diols and contain vinyl compounds, such as styrene, alkyd resins. r) Silicones, such as those based on dimethylsiloxane, methyl-phenylsiloxane or diphenylsiloxane, for example vinyl-terminated silicones. s) A mixture, combination or blend of two or more of the foregoing polymers.

[0028] When the polymers identified under a) to r) are copolymers, they may be in the form of random, block or tapered structures. Furthermore, these polymers may be present in the form of linear, branched, star or hyperbranched structures.

[0029] The plastic containing at least one transition metal is preferably made of an olefin or diolefin polymer, more particularly preferably made of polyethylene or polypropylene or the like.

[0030] When the polymers identified under a) to r) are stereoregular polymers, they may be in isotactic, stereotactic, but also atactic form, or in the form of stereoblock copolymers.

[0031] Furthermore, the polymers identified under a) through r) may have both amorphous and (partially) crystalline morphology.

[0032] If desired, the polyolefins described under a) may be crosslinked, for example crosslinked polyethylene is called X-PE.

[0033] Furthermore, the compounds of the invention may be used to stabilize rubbers and elastomers. These may be natural rubber (NR) or synthetic rubber materials. Suitable synthetic rubber materials are in particular made of butadiene (BR), styrene-butadiene (SBR), chloroprene (CR), isoprene (IR), isobutylene-isocyanate, acrylonitrile-butadiene (NBR or hydrogenated form HNBR). Other suitable rubbers and elastomers include ethylene-propylene-diene terpolymers (EPDM), ethylene-propylene copolymers (EPM), polyester urethanes (AU), polyether urethanes (EU), and silicones (MQ).

[0034] In addition to virgin materials, the plastics may be recycled plastics, for example plastics obtained from industrial collections such as production waste, household or recycled material collections.

[0035] In carrying out the method, at least one additive is introduced into the at least one transition metal-containing plastic, selected from the following group: amine antioxidants, secondary antioxidants (especially phosphites, phosphonites or thioethers), UV absorbers, light stabilizers (especially hindered amine light stabilizers (HALS)), long-term heat stabilizers (HAS), metal deactivators, filler deactivators, antiozonants, nucleating agents, antinucleating agents, clarity enhancers (clarifiers), impact modifiers, plasticizers, lubricants, rheology or viscosity modifiers, thixotropic agents, chain extenders, processing aids, mold release aids, flame retardants, pigments, dyes, optical brighteners, antimicrobial agents, antistatic agents, lubricants, Included are antiblocking agents, coupling agents, crosslinking agents, anticrosslinking agents, hydrophilizing agents, hydrophobizing agents, surface modifiers, hydrolysis stabilizers, adhesion promoters, dispersants, compatibilizers, oxygen scavengers, acid scavengers, acetaldehyde and formaldehyde scavengers, foaming agents, decomposition additives (prodegradants), antifoaming agents, odor scavengers, odor improving substances, PVC heat stabilizers, marking agents, antifog agents, gloss enhancers, matting agents, additives to increase electrical and / or thermal conductivity, water repellents (insect repellents), fillers, and reinforcing agents, and mixtures thereof.

[0036] In a further preferred embodiment, the composition comprises a light stabilizer from the group of secondary antioxidants (especially phosphites / phosphonites), acid scavengers, co-stabilizers and / or hindered amines (HALS).

[0037] The present invention also relates to a plastic composition comprising or consisting of at least one sugar alcohol (component (A)) and at least one phenolic antioxidant (component (B)), and also at least one plastic containing transition metals selected from the group consisting of metals of groups 6, 7, 8, 9, 10 and 11 of the periodic table, wherein the total content of transition metals in the plastic composition is at least 10 ppm (wt / wt).

[0038] The preferred embodiments explained above in relation to the method, in particular those concerning the amounts and qualities of the individual components, also apply without limitation for the purposes of defining the plastic composition according to the invention.

[0039] According to a preferred embodiment, the plastic composition comprises or consists of 0.02 to 3.0 parts by weight, preferably 0.03 to 0.5 parts by weight, of at least one sugar alcohol (component (A)), 0.02 to 3.0 parts by weight, preferably 0.03 to 0.5 parts by weight, of at least one phenolic antioxidant (component (B)), and 94.0 to 99.96 parts by weight, preferably 99.0 to 99.94 parts by weight, of at least one plastic containing a transition metal.

[0040] The plastic composition may comprise at least one further additive selected from the group consisting of: amine antioxidants, secondary antioxidants, in particular phosphites, phosphonites or thioethers, UV absorbers, light stabilizers, in particular hindered amine light stabilizers (HALS) and long-term heat stabilizers (HAS), conventional metal deactivators, filler deactivators, antiozonants, nucleating agents, antinucleating agents, clarity enhancers (clarifiers), impact modifiers, plasticizers, lubricants, rheology or viscosity modifiers, thixotropic agents, chain extenders, processing aids, mould release aids, flame retardants. agents, pigments, dyes, optical brighteners, antibacterial agents, antistatic agents, lubricants, antiblocking agents, coupling agents, crosslinking agents, anticrosslinking agents, hydrophilizing agents, hydrophobizing agents, surface modifiers, hydrolysis stabilizers, adhesion promoters, dispersants, compatibilizers, oxygen scavengers, acid scavengers, acetaldehyde and formaldehyde scavengers, foaming agents, decomposition additives (prodegradants), defoamers, odor scavengers, odor improving substances, PVC heat stabilizers, marking agents, anti-fog agents, gloss enhancers, matting agents, additives for improving electrical and / or thermal conductivity, water repellents (insect repellents), fillers and reinforcing agents, and mixtures thereof.

[0041] The invention also relates to molding compounds or moldings which can be produced from the plastic composition according to the invention as described above. The moldings are in particular moldings produced by injection molding, for example bottles, containers, screw-cap containers, crates, barrels, buckets, pallets, technical parts for vehicles and transport (bumpers, trim parts, handles, headlight covers, accessories and functional parts), electrical and electronic applications (televisions, computers, mobile phones, washing machines, dishwashers, coffee machines, drills, plug connection parts, housing parts and accessories for storage media), household, leisure and sports goods (planters, hangers, toy figures, model building parts), furniture parts (brackets and clips), parts produced by blow molding, in particular hollow bodies (e.g. bottles, fuel tanks, canisters, washing water tanks, expansion tanks), parts produced by rotational molding, in particular tanks. Parts manufactured by calendering, in particular films (e.g. decorative films, wallpapers, flooring), parts manufactured by additive manufacturing processes, such as binder jetting (BJ), laser sintering (LS), selective laser melting (SLM), electron beam melting (EBM), fused deposition modeling (FDM), fused filament fabrication (FFF), multijet modeling (MJM), polyjet modeling (PJM), layer lamination (LLM), thermal transfer sintering (TTS), digital light processing (DLP), photopolymer jetting (PJ), stereolithography (SL).

[0042] The invention is particularly suitable for the stabilization of plastics in the form of injection moulded articles, sheets or films, foams, fibres, cables or tubes, profiles, hollow bodies, tapes, membranes (such as geomembranes) or adhesives, produced by processes such as extrusion, injection moulding, blow moulding, calendaring, compression moulding, spinning, rotational moulding etc. Specific examples include: Packaging applications: e.g. food, detergents, cosmetics, film adhesives, bottles, bags, screw-cap containers. Storage and transport containers: e.g. boxes, crates, barrels, buckets, pallets. Automotive, railway, aircraft, marine and machinery parts: e.g. bumpers, trim parts, accessories, functional parts, interior parts. Construction applications: e.g. profiles, building sheets, cable ducts, house cladding, soundproofing walls, drainage channels, profile boards, flooring. Road and landscaping applications: e.g. sign bases, posts, barriers, geotextiles. Electrical and electronic applications: e.g. televisions, computers, mobile phones, washing machines, dishwashers, coffee makers, drills, connectors, storage media housing parts and accessories. Cable insulation. Pipe applications: e.g. water, gas, sewage, irrigation, drainage pipes. · Hygiene products: for example, disposable diapers. Furniture and textile applications: e.g. curtains, cushions, worktops. Household, leisure and sporting goods: e.g. balls, tennis rackets, skis, flower pots, rainwater tanks, hangers. Agricultural applications: e.g. mulch films, tunnel films or perforated films, flower pots. Pharmaceutical and agrochemical applications: e.g. encapsulation of active ingredients and bioactive substances. Medical technology: production of suture materials, dressings, orthotics and prosthetics.

[0043] Furthermore, the present invention relates to the use of at least one sugar alcohol (component (A)) in combination with at least one phenolic antioxidant (component (B)) for stabilizing a plastic containing at least one transition metal against oxidative, thermal and / or actinic degradation, wherein the at least one sugar alcohol (component (A)) and the at least one phenolic antioxidant (component (B)) are introduced into a plastic containing at least one transition metal selected from the group consisting of metals of groups 6, 7, 8, 9, 10 and 11 of the periodic table, such that the total content of transition metals in the resulting plastic composition is at least 10 ppm (wt / wt).

[0044] The invention may be carried out, for example, with an additive composition consisting of at least one sugar alcohol (component (A)) and at least one phenolic antioxidant (component (B)), which may be present as a powder, liquid, oil, compact, on a carrier material, granules, solution or flakes, by mixing with the polymer to be stabilized, bringing the polymer matrix into the molten state and then cooling. Alternatively, it is also possible to introduce the additive into the polymer melt in the molten state.

[0045] If further components are added to the polymer composition, these may be added to the polymer separately, in the form of a liquid, powder, granules or compacts, or together with the additive composition according to the invention as described above.

[0046] The introduction of the above-mentioned additive composition and, if necessary, further additives into the plastic is carried out by conventional processing methods, preferably in mixers, kneaders or extruders. Preferred processing machines are extruders such as single-screw extruders, twin-screw extruders, planetary roller extruders, ring extruders and co-kneaders, which are preferably equipped with a vacuum degassing device. Processing can be carried out in air or, if necessary, under inert gas conditions.

[0047] The plastic compositions containing the above-mentioned additive compositions may be processed by conventional plastics processing methods in continuous and discontinuous processes such as, for example, extrusion, calendaring, blow molding, pultrusion, injection molding, press molding, transfer molding, casting, blow molding, rotational molding, thermoforming, sintering, foaming, or by additive manufacturing processes for the production of granular materials, moldings, semi-finished products, fibers and films.

[0048] Suitable extruders are piston and screw extruders, single-screw extruders, twin-screw extruders, multi-screw extruders, planetary roller extruders, in particular for the production of plastic granular materials, pipes, rods, tubes, profiles, sheaths, boards, films, V-belts, toothed belts, seals, foam boards (XPS), fibres and filaments for additive manufacturing processes.

[0049] Suitable injection molding machines may be hydraulic or electromechanical and may provide multi-component injection molding and in-mold processes.

[0050] Articles produced by injection molding include, for example, bottles, containers, screw-cap containers, crates, barrels, buckets, pallets, technical parts for automotive and transportation (e.g. bumpers, trim parts, handles, headlight covers, accessories, functional parts), electrical and electronic applications (e.g. housing parts and accessories for televisions, computers, mobile phones, washing machines, dishwashers, coffee machines, drills, plug connections, storage media), household, leisure and sporting goods (e.g. planters, hangers, toy figurines, model parts), furniture parts (e.g. brackets, clips).

[0051] Parts which can be produced by blow moulding include in particular hollow bodies such as bottles, fuel tanks, canisters, flushing water tanks, expansion tanks.

[0052] Parts produced by rotational molding include in particular tanks (eg fuel oil tanks and rainwater tanks, machine housings, transport containers) and in particular leisure and water sports equipment (eg kayaks).

[0053] Calendering is used especially in film production, for example in the production of decorative films, wallpapers and floor coverings.

[0054] Furthermore, the additive composition according to the invention may be prepared and introduced into the polymer or polymer recycle in the form of a so-called masterbatch or concentrate, which contains, for example, 10 to 90% of the composition according to the invention.

[0055] The present invention will be described in more detail with reference to the following embodiments, but the present invention is not limited thereto.

[0056] Exemplary embodiments: To test the effectiveness of the stabilizer according to the invention, a commercial polypropylene (Moplen HP 500N, Lyondell Basell Industries) was homogenized as a powder-powder mixture with the stabilizer according to the invention and circulated in a twin-screw microextruder (MC5, manufacturer DSM) at 200° C. and 90 rpm for 30 minutes, recording the force drop, which is a direct measure of the molecular weight (Mw): a smaller force drop indicates a higher stabilizing effect.

[0057] [Table 1] AO-1: Pentaerythritol tetrakis[3-[3,5-di-tert-butyl-4-hydroxyphenyl]-propionate AO-2: Ethylene-1,2-bis(3,3-bis[3-tert-butyl-4-hydroxyphenyl]butyrate (Hostanox O3, Clariant SE) AO-3: 1,3,5-trimethyl-2,4,5-tris(3',5'-di-tert-butyl)-4'-hydroxybenzyl)-benzene (Irganox 1330, BASF SE) AO-4: 2',3-bis[[3-[3,5-di-tert-butyl-4-hydroxyphenyl]propionyl]]proponiohydrazine (Irganox MD 1024, BASF SE)

[0058] The addition of a transition metal significantly deteriorates the stability of polypropylene (Comparative Examples 2 to 7). On the other hand, when the additive of the present invention was used, no decomposition of polypropylene was observed even after 30 minutes, confirming an excellent stabilizing effect.

Claims

1. A method for stabilizing a plastic containing at least one transition metal against oxidative, thermal, and / or chemical radiation decomposition, At least one sugar alcohol (component (A)) and At least one phenolic antioxidant (component (B)), A method for introducing a transition metal selected from the group consisting of metals from groups 6, 7, 8, 9, 10, and 11 of the periodic table into a plastic, such that the total content of the transition metal in the resulting plastic composition is at least 10 ppm (wt / wt).

2. The method according to claim 1, characterized in that the total content of the transition metal in the resulting plastic composition is at least 50 ppm (wt / wt), preferably at least 100 ppm (wt / wt) and / or at most 10,000 ppm, preferably at most 5,000 ppm, more preferably at most 2,000 ppm, and particularly preferably at most 1,000 ppm.

3. The method according to claim 1, characterized in that the at least one transition metal is selected from the group consisting of Fe, Co, Ni, Cu, Cr, Mn and mixtures thereof.

4. The method according to claim 1, characterized in that the definition of at least one transition metal excludes metals of groups 4, 5, and 6 of the periodic table.

5. The at least one sugar alcohol is Algitol, Cicitol, and, The method according to claim 1, characterized in that it is selected from the group consisting of mixtures and compounds thereof.

6. The aforementioned algitol is based on the empirical formula HOCH2[CH(OH)]nCH2OH, R1-OCH2[CH(OH)]nCH2OH, or, It has HOCH2[CH(OH)]n[CH(OR1)]CH2OH, The method according to claim 5, characterized in that n = 2 to 6, preferably n = 3 to 5, and R1 is an arbitrarily substituted sugar residue.

7. The aforementioned algitol is selected from the group consisting of treitol, erythritol, galactitol, mannitol, ribitol, sorbitol, xylitol, arabitol, isomalt, lactitol, maltitol, althritol, iditol, maltotriitol, and hydrogenated oligosaccharides and polysaccharides having polyol-terminated groups, as well as mixtures thereof, heptitol and octitol, and in particular is selected from the group consisting of meso-glyceroallo-heptitol, D-glycero-D-altro-heptitol, D-glycero-D-mannoheptitol, meso-glycero-glo-heptitol, D-glycero-D-galacto-heptitol (persitol), D-glycero-D-gluco-heptitol, L-glycero-D-gluco-heptitol, D-erythro-L-galacto-octitol and D-threo-L-galacto-octitol. The method according to claim 5, wherein the algitol is preferably selected from the group consisting of erythritol, mannitol, isomalt, maltitol, and mixtures thereof.

8. The method according to claim 5, characterized in that the cyclitol is selected from the group consisting of inositol (myo, scyllo-, D-chiro-, L-chiro-, muco-, neo-, allo-, epi-, and cis-inositol), 1,2,3,4-tetrahydroxycyclohexane, 1,2,3,4,5-pentahydroxycyclohexane, quercitol, bisquumitol, bornesitol, chondritol, ononitol, pinitol, pinpolitol, kebrachitol, ciseritol, quinic acid, shikimic acid, and varienol, and is preferably myo-inositol.

9. The method according to claim 1, characterized in that component (A) and component (B) are introduced into the plastic containing the at least one transition metal in a weight ratio of 90:10 to 10:90, preferably 80:20 to 20:80, and particularly preferably 70:30 to 30:

70.

10. A method for introducing the above components (A) and (B) into a plastic containing at least one transition metal, When the aforementioned components (A) and (B) exist in solid or liquid form, the plastic containing at least one transition metal, which exists as a solid, is mixed with the aforementioned components (A) and (B), the resulting mixture is melted and cooled, or The method according to claim 1, characterized by melting component (A) and component (B) which exist in solid or liquid form, and introducing the resulting molten material into a molten plastic containing at least one transition metal.

11. The method according to claim 1, characterized in that 0.01 to 5.0 parts by weight, preferably 0.02 to 1.0 part by weight, of the at least one sugar alcohol (component (A)) is introduced to 95.0 to 99.99 parts by weight, preferably 99.0 to 99.98 parts by weight, of the plastic containing the at least one transition metal.

12. The method according to claim 1, characterized in that 0.02 to 3 parts by weight, preferably 0.03 to 0.5 parts by weight of the at least one sugar alcohol and 0.04 to 6 parts by weight, preferably 0.06 to 1 part by weight of the at least one phenolic antioxidant of component (B) are introduced to 91 to 99.94 parts by weight, preferably 98.5 to 99.91 parts by weight of the plastic containing the at least one transition metal.

13. The plastic containing at least one transition metal is a) Polymers of olefins or diolefins, such as polyethylene (especially LDPE, LLDPE, VLDPE, ULDPE, MDPE, HDPE and UHMWPE, metallocene-PE (m-PE)), polypropylene, polyisobutylene, poly-4-methylpentene-1, polybutadiene, polyisoprene, polycyclooctene, polyalkylene-carbon monoxide copolymers, and corresponding copolymers of random or block structures (e.g., polypropylene-polyethylene (EP), EPM or EPDM, ethylene-vinyl acetate (EVA), ethylene-butyl acrylate, ethylene-acrylic acid esters such as ethylene-acrylic acid-glycidyl acrylate), and corresponding graft polymers (e.g., polypropylene-g-maleic anhydride, polypropylene-g-acrylic acid, and polyethylene-g-acrylic acid), b) Polystyrene, polymethylstyrene, polyvinylnaphthalene, styrene-butadiene (SB), styrene-butadiene-styrene (SBS), styrene-ethylene-butylene-styrene (SEBS), styrene-ethylene-propylene-styrene, styrene-isoprene, styrene-isoprene-styrene (SIS), styrene-butadiene-acrylonitrile (ABS), styrene-acrylonitrile-acrylate (ASA), styrene-ethylene, styrene-maleic anhydride polymer (including corresponding graft copolymers such as styrene on butadiene, maleic anhydride on SBS or SEBS, and graft copolymers of methyl methacrylate, styrene-butadiene and ABS (MABS)), c) Halogen-containing polymers, for example, polyvinyl chloride (PVC), polychloroprene, polyvinylidene chloride (PVDC), copolymers of vinyl chloride and vinylidene chloride or vinyl acetate, chlorinated polyethylene, polyvinylidene fluoride, homopolymers and copolymers of epichlorohydrin (especially copolymers containing ethylene oxide (ECO)), d) Polymers of unsaturated esters, for example, polyacrylates and polymethacrylates (e.g., polymethyl methacrylate (PMMA), polybutyl acrylate, polylauryl acrylate, polystearyl acrylate, polyglycidyl acrylate, polyglycidyl methacrylate), polyacrylonitrile, polyacrylamide, copolymers of polyacrylonitrile and polyalkyl acrylate. e) Polymers of unsaturated alcohols and their derivatives, for example, polyvinyl alcohol, polyvinyl acetate, polyvinyl butyral, polyallyl phthalate, polyallyl melamine, f) Polyacetals, for example, polyoxymethylene (POM), and corresponding copolymers, for example, copolymers containing butanal, g) Polyphenylene oxide, and blends thereof with polystyrene or polyamide, h) Polymers of cyclic ethers, e.g., polyethylene glycol, polypropylene glycol, polyethylene oxide, polypropylene oxide, polytetrahydrofuran, i) Materials derived from polyurethane, hydroxy-terminated polyether or polyester and aromatic or aliphatic isocyanates (e.g., 2,4- or 2,6-toluene diisocyanate or methylenediphenyl diisocyanate), particularly linear polyurethane (PU), polyurea, j) Polyamides, e.g., polyamides 6, 6.6, 6.10, 4.6, 4.10, 6.12, 10.10, 10.12, 12.12, polyamide 11, polyamide 12, and (partially) aromatic polyamides (e.g., polyphthalamides), e.g., polyamides made from terephthalic acid and / or isophthalic acid and aliphatic diamines such as hexamethylenediamine or m-xylylenediamine, or polyamides made from aliphatic dicarboxylic acids such as adipic acid or sebacic acid and aliphatic diamines such as hexamethylenediamine or m-xylylenediamine, or polyamides made from aliphatic dicarboxylic acids such as adipic acid or sebacic acid and aromatic diamines such as 1,4- or 1,3-diaminobenzene, or blends of different polyamides (e.g., PA-6 and PA6.6) or blends of polyamides and polyolefins (e.g., PA / PP), k) Polyimide, polyamideimide, polyetherimide, polyesterimide, poly(ether)ketone, polysulfone, polyethersulfone, polyarylsulfone, polyphenylene sulfide, polybenzimidazole, polyhydantoin, l) Polyesters of aliphatic or aromatic dicarboxylic acids and diols, or polyesters of hydroxycarboxylic acids, for example, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene terephthalate, polyethylene naphthyrate, poly-1,4-dimethylolcyclohexane terephthalate, polyhydroxybenzoate, polyhydroxynaphthalate, polylactic acid, polyhydroxybutyrate (PHB), polyhydroxyvalerate (PHV), polyethylene succinate, polytetramethylene succinate, polycaprolactone, m) Polycarbonate, polyester carbonate, and blends thereof, e.g., PC / ABS, PC / PBT, PC / PET / PBT, PC / PA, n) Cellulose derivatives, for example, cellulose nitrate, cellulose acetate, cellulose propionate, cellulose butyrate, o) Epoxy resins comprising a bifunctional or polyfunctional epoxy compound as the main component, and combining with curing agents or catalytically active curing agents based on, for example, amines, anhydrides, dicyandiamides, mercaptans, or isocyanates. p) Phenolic resins, for example, phenol-formaldehyde resin, urea-formaldehyde resin, melamine-formaldehyde resin, etc. q) An unsaturated polyester resin comprising an unsaturated dicarboxylic acid and a diol, and containing a vinyl compound, such as styrene, an alkyd resin, r) Silicones, for example, those based on dimethylsiloxane, methylphenylsiloxane, or diphenylsiloxane, such as vinyl-terminated silicones. s) The method according to claim 1, characterized in that two or more polymers are selected from the group consisting of mixtures, compounds, or blends of the aforementioned polymers.

14. The plastic containing at least one transition metal comprises at least one further additive, the at least one further additive being an amine antioxidant, a secondary antioxidant (especially phosphite, phosphonite or thioether), an ultraviolet absorber, a light stabilizer (especially hindered amine light stabilizer (HALS)), a long-term heat stabilizer (HAS), a metal deactivator, a filler deactivator, an ozone degradation inhibitor, a nucleating agent, a nucleating inhibitor, a clarity enhancer (clarifier), an impact modifier, a plasticizer, a lubricant, a rheology or viscosity modifier, a thixotropic agent, a chain extender, a processing aid, a mold release aid, a flame retardant, a pigment, a dye, a fluorescent whitening agent, an antibacterial agent, an antistatic agent, a lubricant, a bronze bromine The method according to claim 1, characterized in that a substance selected from the group comprising anti-locking agents, coupling agents, crosslinking agents, anti-crosslinking agents, hydrophilizing agents, hydrophobic agents, surface modifiers, hydrolysis stabilizers, adhesion promoters, dispersants, compatibilizers, oxygen scavengers, acid scavengers, acetaldehyde and formaldehyde scavengers, foaming agents, decomposition additives (prodegradants), defoaming agents, odor scavengers, odor improving substances, PVC heat stabilizers, marking agents, anti-fogging agents, gloss enhancers, matting agents, additives for increasing electrical and / or thermal conductivity, water repellents (insecticides), fillers, and reinforcing agents, and mixtures thereof, is introduced into the at least one transition metal-containing plastic during the method.

15. A plastic composition, At least one sugar alcohol (component (A)), At least one phenolic antioxidant (component (B)), A plastic comprising, or consisting of, at least one plastic containing a transition metal selected from the group consisting of metals in groups 6, 7, 8, 9, 10 and 11 of the periodic table, A plastic composition wherein the total content of the transition metal in the plastic composition is at least 10 ppm (wt / wt).

16. 0.02 to 3.0 parts by weight, preferably 0.03 to 0.5 parts by weight of at least one sugar alcohol (component (A)), 0.02 to 3.0 parts by weight, preferably 0.03 to 0.5 parts by weight of at least one phenolic antioxidant (component (B)), The invention comprises, or is not composed of, at least one plastic containing 94.0 to 99.96 parts by weight, preferably 99.0 to 99.94 parts by weight, of a transition metal selected from the group consisting of metals of Groups 6, 7, 8, 9, 10 and 11 of the periodic table, and The plastic composition according to claim 15, characterized by the following:

17. The plastic composition according to claim 15, The product comprises at least one further additive, the at least one further additive being an amine antioxidant, a secondary antioxidant, particularly a phosphite, phosphonite or thioether, an ultraviolet absorber, a light stabilizer (particularly a hindered amine light stabilizer (HALS)), a long-term heat stabilizer (HAS), a metal deactivator, a filler deactivator, an ozone degradation inhibitor, a nucleating agent, a nucleating inhibitor, a clarity enhancer (clarifier), an impact modifier, a plasticizer, a lubricant, a rheology or viscosity modifier, a thixotropic agent, a chain extender, a processing aid, a mold release aid, a flame retardant, a pigment, a dye, a fluorescent whitening agent, an antibacterial agent, an antistatic agent, a lubricant, etc. A plastic composition characterized by being selected from the group comprising: agents, blocking inhibitors, coupling agents, crosslinking agents, anti-crosslinking agents, hydrophilic agents, hydrophobic agents, surface modifiers, hydrolysis stabilizers, adhesion promoters, dispersants, compatibilizers, oxygen scavengers, acid scavengers, acetaldehyde and formaldehyde scavengers, foaming agents, decomposition additives (prodegradants), defoaming agents, odor scavengers, odor improving substances, PVC heat stabilizers, marking agents, antifogging agents, gloss enhancers, matting agents, additives for increasing electrical and / or thermal conductivity, water repellents (insecticides), fillers, and reinforcing agents, as well as mixtures thereof.

18. A molded compound or molded article that can be produced from the plastic composition described in claim 15, in particular, Molded products manufactured by injection molding include, for example, bottles, containers, screw-top containers, crates, barrels, buckets, pallets, technical parts for vehicles and transport (bumpers, trim parts, handles, headlight covers, accessories and functional parts), electrical and electronic applications (televisions, computers, mobile phones, washing machines, dishwashers, coffee machines, drills, plug connectors, housing parts and accessories for storage media), household, leisure, and sporting goods (planters, hangers, toy figures, model-making parts), furniture parts (brackets and clips), Parts manufactured by blow molding, especially hollow bodies (e.g., bottles, fuel tanks, canisters, washing water tanks, expansion tanks), Parts manufactured by rotational molding, particularly tanks (e.g., fuel oil tanks, rainwater tanks), machine housings, transport containers, leisure and water sports equipment (such as kayaks), Parts manufactured by calendering, especially films (e.g., decorative films, wallpaper, flooring materials), Components manufactured by additive manufacturing processes, such as molded compounds or molded articles that can be manufactured in the form of binder jetting (BJ), laser sintering (LS), selective laser melting (SLM), electron beam melting (EBM), fused deposition modeling (FDM), fused filament processing (FFF), multi-jet modeling (MJM), poly-jet modeling (PJM), layer lamination (LLM), thermal transfer sintering (TTS), digital photoprocessing (DLP), photopolymer jetting (PJ), and stereolithography (SL).

19. The use of a combination of at least one sugar alcohol (component (A)) and at least one phenolic antioxidant (component (B)) to stabilize a plastic containing at least one transition metal selected from the group consisting of metals from groups 6, 7, 8, 9, 10 and 11 of the periodic table against oxidative, thermal and / or chemical radiation decomposition, The additives, at least one sugar alcohol (component (A)) and at least one phenolic antioxidant (component (B)), are added to a plastic containing at least one transition metal, so that the total content of the transition metal in the resulting plastic composition is at least 10 ppm (wt / wt).