Method of producing mass colored beer bottles

Abstract

The present invention relates to a mass colored polyester beer bottle and a method of producing a mass colored polyester beer bottle which method comprises incorporating into a polyester a dye of formula and a UV absorber.

1 . A method of producing mass colored beer bottles which method comprises forming said beer bottles from mass colored polyester which method comprises incorporating into said polyester a dye of formula  
     
       
         
         
             
             
         
       
     
     and a UV absorber.  
   
   
       2 . A method according to  claim 1 , wherein the UV absorber comprises a UV absorber from the class of the 2-(2′-hydroxyphenyl)benzotriazoles, of the 2-hydroxybenzophenones, of the esters of substituted or unsubstituted benzoic acid, of the acrylates, of the oxamides, of the 2-(2-hydroxyphenyl)-1,3,5-triazines, of the monobenzoates of resorcinol or of the formamidines, or a polyester UV absorber of formula  
     
       
         
         
             
             
         
       
     
     having a specific weight of from 1200 to 1400, preferably from 1300 to 1350, at 25° C.  
   
   
       3 . A method according to  claim 1 , which comprises incorporating in addition to the dye of formula 4, a dye of formula  
     
       
         
         
             
             
         
       
     
   
   
       4 . A method according to  claim 2 , which comprises incorporating in addition to the dye of formula 4, a dye of formula  
     
       
         
         
             
             
         
       
     
   
   
       5 . A method according to  claim 1 , which comprises incorporating in addition to the dye of formula 4, a dye of formula  
     
       
         
         
             
             
         
       
     
   
   
       6 . A method according to  claim 2 , which comprises incorporating in addition to the dye of formula 4, a dye of formula  
     
       
         
         
             
             
         
       
     
   
   
       7 . A method according to  claim 1 , wherein the polyester is polyethylene terephthalate.  
   
   
       8 . A mass colored polyester beer bottle comprising polyethylene terephthalate which polyethylene terephthalate comprises a dye of formula  
     
       
         
         
             
             
         
       
     
     and a UV absorber.  
   
   
       9 . A mass colored polyester beer bottle according to  claim 8 , wherein the UV absorber comprises a UV absorber from the class of the 2-(2′-hydroxyphenyl)benzotriazoles, of the 2-hydroxybenzophenones, of the esters of substituted or unsubstituted benzoic acid, of the acrylates, of the oxamides, of the 2-(2-hydroxyphenyl)-1,3,5-triazines, of the monobenzoates of resorcinol or of the formamidines, or a polyester UV absorber of formula  
     
       
         
         
             
             
         
       
     
     having a specific weight of from 1200 to 1400, preferably from 1300 to 1350, at 25° C.  
   
   
       10 . A mass colored polyester beer bottle according to  claim 8 , which further comprises a dye of formula  
     
       
         
         
             
             
         
       
     
   
   
       11 . A mass colored polyester beer bottle according to  claim 9 , which further comprises a dye of formula  
     
       
         
         
             
             
         
       
     
   
   
       12 . A mass colored polyester beer bottle according to  claim 8 , which further comprises a dye of formula  
     
       
         
         
             
             
         
       
     
   
   
       13 . A mass colored polyester beer bottle according to  claim 9 , which further comprises a dye of formula