Liquid stabilizer mixture

Abstract

A mixture comprising (a) one or more liquid UV absorbers, with the proviso that Tinuvin 384-2 as a liquid UV absorber is excluded, (b) one or more branched polymers comprising stabilizing groups, (c) optionally one or more further additions. Use of such a mixture for stabilizing inanimate organic materials against the effect of light, oxygen and/or heat. Inanimate organic materials comprising at least one such mixture, and also articles produced from such inanimate organic materials. Methods of stabilizing inanimate organic materials against the effect of light, oxygen and/or heat by adding to said inanimate organic materials at least one such mixture in an effective amount.

1 . A mixture comprising
 (a) one or more UV absorbers which are liquid at a temperature of from 5 to 40° C. and a pressure of from 500 to 1500 mbar, with the proviso that the mixture of 95% benzene propanoic acid 3-2(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxy-C 7-9 -branched and linear alkyl esters and 5% 1-methoxy-2-propyl acetate as a liquid UV absorber is excluded,   (b) one or more branched polymers comprising a stabilizing group,   (c) optionally one or more further additions.   
     
     
         2 . The mixture according to  claim 1 , wherein the branched polymers comprising a stabilizing group (b) are liquid at room temperature. 
     
     
         3 . The mixture according to  claim 1 , wherein the mixture is liquid at room temperature. 
     
     
         4 . The mixture according to  claim 1 , wherein the UV absorber (a) is selected from the group consisting of cyanoacrylate, cinnamic esters ester, benzotriazole, and triazine. 
     
     
         5 . The mixture according to  claim 4 , wherein the UV absorber (a) is 2-ethylhexyl 2-cyano-3,3-diphenylacrylate or 2-ethylhexyl 4-methoxycinnamate. 
     
     
         6 . The mixture according to  claim 1 , wherein the one or more branched polymers comprising a stabilizing group comprise a hyperbranched structure. 
     
     
         7 . The mixture according to  claim 1 , wherein the branched polymer comprises a carbonate group. 
     
     
         8 . The mixture according to  claim 1 , wherein the branched polymer comprises urethane, allophanate, urea and/or biuret groups. 
     
     
         9 . The mixture according to  claim 1 , wherein the branched polymer comprises a HALS group as a stabilizing group. 
     
     
         10 . The mixture according to  claim 1 , further comprising as optional component (c) an antioxidant, a flame retardant and/or a colorant. 
     
     
         11 - 13 . (canceled) 
     
     
         14 . A plastic comprising at least one mixture according to  claim 1 . 
     
     
         15 . An article produced from plastics according to  claim 14 . 
     
     
         16 . A method of stabilizing plastic against the effect of light, oxygen and/or heat, which comprises adding to said plastic at least one mixture according to  claim 1 , in an effective amount.