Stabilizer mixture

Abstract

The invention relates to mixtures, comprising (a) an oligomeric compound, comprising repeat units of the general formula (I) or acid-addition salts thereof and/or (b) a compound of the general formula (II) or acid-addition salts thereof and (c) at least one compound of the general formula (III) and (d) optionally further additives, and also to the use of these mixtures for the stabilization of non-living organic materials with respect to exposure to light, oxygen, and/or heat. The invention further relates to non-living organic materials, comprising at least one of these mixtures, and to articles produced therefrom. The invention further relates to a process for the stabilization of non-living organic materials, with respect to exposure to light, oxygen, and/or heat.

1 : A mixture, comprising at least one of (a) and (b), and further comprising (c) and (d):
 (a) an oligomeric compound, comprising a repeat unit of general formula (I) or an acid-addition salt thereof   
       
         
           
           
               
               
           
         
       
       in which 
       R 1  is H, C1-C30-alkyl, C2-C22-alkenyl, C1-C20-alkoxy, cyanomethyl, 2-hydroxyethyl, formyl, C 2 -C 6 -alkanoyl, benzyl, or a moiety of formula —CR 7 ═CH—CO—OR 8 , 
       R 2  is H, C 1 -C 30 -alkyl, or a mixture comprising a C 14 -C 28 -alkyl group, 
       R 3 , R 4 , R 5 , and R 6 , independently of one another, are identical or different C 1 -C 30 -alkyl, 
       R 7  is H, C 1 -C 6 -alkyl, or a moiety of formula CO—OR 8 , 
       R 8  is C 1 -C 18 -alkyl, C 3 -C 15 -cycloakyl, C 7 -C 18 -aralkyl, phenyl or tolyl,
 (b) a compound of general formula (II) or an acid-addition salt thereof 
 
       
         
           
           
               
               
           
         
       
       in which 
       n is 1 or 2, 
       R 9  is H or C 1 -C 4 -alkyl, 
       R 10 , R 11 , R 12 , and R 13 , independently of one another, are identical or different C 1 -C 4 -alkyl, or R 10  and R 11  or R 12  and R 13  together are a tetramethylene group or pentamethylene group, 
       R 14  is H, C 1 -C 30 -alkyl, or C 2 -C 22 -alkenyl, or unsubstituted or C 1 -C 4 -alkyl-, halogen-, C 1 -C 4 -alkoxy-, methylenedioxy-, ethylenedioxy-, and/or di-C 1 -C 4 -alkylamino-substituted C 7 -C 12 -phenylalkyl, C 1 -C 22 -alkanoyl, C 2 -C 3 -cyanoalkyl, C 1 -C 22 -hydroxyalkyl or C 2 -C 22 -aminoalkyl, 
       R 16  is H or C 1 -C 30 -alkyl, 
       and 
       if n=1
 R 15  is H, C 1 -C 22 -alkyl, C 2 -C 22 -alkenyl, C 3 -C 12 -cycloalkyl or bicycloalkyl, or cyano-, hydroxyl-, or carbo-C 1 -C 4 -alkoxy-substituted C 2 -C 22 -alkyl, or ether-oxygen-, nitrogen-, or sulfur-interrupted C 4 -C 22 -alkyl, or unsubstituted or C 1 -C 4 -alkyl-, halogen-, C 1 -C 4 -alkoxy-, methylenedioxy-, ethylenedioxy-, or di-C 1 -C 4 -alkylamino-substituted C 7 -C 22 -phenyl- or diphenylalkyl, or unsubstituted or C 1 -C 4 -alkyl- or carbo-C 1 -C 4 -alkoxy-substituted phenyl, or a moiety of general formula (IV) 
 
       
         
           
           
               
               
           
         
         
           or C 1 -C 22 -alkyl comprising heterocyclic moieties, 
         
       
       and, 
       if n=2, 
       R 15  is C 2 -C 22 -alkylene, C 5 -C 22 -cycloalkylene, C 8 -C 14 -phenylalkylene, or phenylene, or ether-oxygen-, nitrogen-, or sulfur-interrupted C 4 -C 30 -alkylene, or C 4 -C 30 -alkylene interrupted by 5- or 6-membered heterocyclic moieties,
 (c) at least one compound of general formula (III) 
 
       
         
           
           
               
               
           
         
       
       in which 
       R 17  is C 1 -C 20 -alkyl or aryl, 
       and
 (d) optionally further additives, 
 
       wherein 
       each of the substituents R 1  to R 17  has interruption at any desired position by one or more heteroatoms, where the number of the heteroatoms is not more than 10, and optionally each of the substituents R 1  to R 17  has substitution at any desired position, but not more than five times, by C 1 -C 30 -alkyl, C 1 -C 20 -alkoxy, aryl, heterocyclic moieties, heteroatoms, or halogen, and the likewise has substitution at most twice, by the substituents or by substituted aryl moieties. 
     
     
         2 : The mixture according to  claim 1 , wherein (d) is present and comprises an antioxidant. 
     
     
         3 : The mixture according to  claim 1 , wherein R 2  is a mixture comprising C 14 -C 28 -alkyl groups, where two of the alkyl groups which are not permitted to differ from one another by more than two carbon atoms make up respectively at least 30% of the mixture. 
     
     
         4 : The mixture according to  claim 1 , wherein component (a) comprises an oligomeric compound having a repeat unit of the general formula (I), wherein R 3 , R 4 , R 5  and R 6 ═CH 3  and R 2 ═C 16 -C 26 -alkyl. 
     
     
         5 : The mixture according to  claim 1 , wherein component (a) comprises a compound of the general formula (I), wherein R 3 , R 4 , R 5  and R 6  are methyl, and R 2  is a hydrogen atom or C 2 -C 10 -alkyl. 
     
     
         6 : The mixture according to  claim 1 , wherein component (c) comprises a compound of the general formula (III), where R 17 ═C 16 -alkyl. 
     
     
         7 : The mixture according to  claim 1 , wherein component (c) comprises a compound of the general formula (III), where R 17 =2,4-di-tert-butylphenyl. 
     
     
         8 : The mixture according to  claim 1 , where a ratio by weight of at least one of components (a) and (b) to component (c) is from 10:1 to 1:2. 
     
     
         9 : The mixture according to  claim 1 , wherein the mixture is capable of stabilizing a non-living organic material with respect to exposure to at least one of light, oxygen, and heat. 
     
     
         10 : The mixture according to  claim 9 , wherein the non-living organic material comprises at least one polymer selected from the group consisting of thermoplastic elastomers, polyolefins, polystyrene, copolymers of styrene or of α-methylstyrene, polyesters, polycarbonates, polyvinyl chloride, polyacrylates, polymethacrylates, polyurethanes, and physical blends thereof. 
     
     
         11 : The mixture according to  claim 10 , the non-living organic material is an olefin-based thermoplastic elastomer. 
     
     
         12 : A non-living organic material, comprising at least one mixture according to  claim 1 . 
     
     
         13 : An article, produced from the non-living organic material according to  claim 12 . 
     
     
         14 : A process for stabilizing a non-living organic material with respect to exposure to at least one of light, oxygen, and heat, comprising adding an effective amount of at least one mixture according to  claim 1  to the non-living organic material. 
     
     
         15 : The mixture according to  claim 1 , wherein component (a) is present. 
     
     
         16 : The mixture according to  claim 1 , wherein component (b) is present. 
     
     
         17 : The mixture according to  claim 1 , wherein component (a) and component (b) are present. 
     
     
         18 : The mixture according to  claim 15 , wherein R 1  is C 1 -C 6 -alkoxy. 
     
     
         19 : The mixture according to  claim 16 , wherein R 14  is formyl, acyl or benzyl.