Unsaturated polyester resin compositions

Abstract

The present invention relates to a pre-accelerated resin composition, characterized in that the resin composition comprises an unsaturated polyester resin and/or a vinyl ester resin, a soluble copper compound and a heterocyclic aromatic amine and which resin composition is essentially free of cobalt. The present invention further relates to a two component composition in which the first component comprises such a resin composition and in which the second component comprises an organic peroxide.

1 . Pre-accelerated resin composition, characterized in that the resin composition comprises an unsaturated polyester resin and/or a vinyl ester resin and
 a soluble copper compound, and   a heterocyclic aromatic amine, and   which resin composition contains less than 0.01 mmol cobalt per kg primary resin system.   
     
     
         2 . Resin composition according to  claim 1 , characterized in that the resin composition comprises a heterocyclic aromatic amine according to formula 1: 
       
         
           
           
               
               
           
         
         in which A=N, CR; CR; and at least one of A and B is N; R, R 1 , R 2 =C 1 -C 20  alkyl, C 6 -C 20  aryl, C 7 -C 20  alkylaryl, C 7 -C 20  arylalkyl in which the aryl groups can be further substituted, and in which a ring structure can be formed between R 1  and R 2 , R 1  and R, R 2  and R and/or R 1 , R 2  and R. 
       
     
     
         3 . Resin composition according to  claim 1 , characterized in that the amount of heterocyclic aromatic amine lies between 0.001 and 1000 mmol/kg primary resin system. 
     
     
         4 . Resin composition according to  claim 1 , characterized in that the heterocyclic aromatic amine is imidazole or a derivative thereof. 
     
     
         5 . Resin composition according to  claim 1 , characterized in that the soluble copper compound is an organic copper compound. 
     
     
         6 . Resin composition according to  claim 5 , characterized in that the organic copper compound is a copper carboxylate. 
     
     
         7 . Resin composition according to  claim 1 , characterized in that the amount of the soluble copper compound lies between 0.001 and 2000 mmol/kg primary resin system. 
     
     
         8 . Resin composition according to  claim 1 , characterized in that the molar ratio copper to heterocyclic aromatic amine is between 0.5 and 50. 
     
     
         9 . Resin composition according to  claim 1 , characterized in that the composition further comprises a 1,3-dioxo compound. 
     
     
         10 . Resin composition according to  claim 9 , characterized in that the 1,3 dioxo compound is selected from the group of 1,3-diketones, 1,3-dialdehydes, 1,3-ketoaldehydes, 1,3-ketoesters, and 1,3-ketoamides. 
     
     
         11 . Resin composition according to  claim 1 , characterized in that the composition further comprises an inhibitor. 
     
     
         12 . Resin composition according to  claim 11 , characterized in that the inhibitor is selected from the group of phenothiazines, phenols, hydroquinones, benzoquinones, catechols and N-oxyl compounds. 
     
     
         13 . Two component composition in which the first component comprises a resin composition according to  claim 1 , and in which the second component comprises an organic peroxide. 
     
     
         14 . Two-component composition according to  claim 13 , characterized in that the second component comprises a hydroperoxide or a perester. 
     
     
         15 . Process for radically curing a resin composition, characterized in that the curing is performed starting from a two-component composition according to  claim 13 . 
     
     
         16 . Process according to  claim 15 , characterized in that the curing is effected at a temperature in the range of from −20 to +200° C. 
     
     
         17 . Use of a composition according to  claim 1 , in any one of the areas of chemical anchoring, construction, roofing, flooring, windmill blades, containers, tanks, pipes, automotive parts or boats. 
     
     
         18 . Use of a composition obtained by  claim 15 , in any one of the areas of chemical anchoring, construction, roofing, flooring, relining, windmill blades, containers, tanks, pipes, automotive parts or boats. 
     
     
         19 . Objects obtained by employing a composition or a composition obtained by the process of  claim 15 .