Metal salts of quinolinols and quinolinol derivatives as corrosion inhibitors

Abstract

Adhesive compositions exhibit improved adhesion and conductivity by the addition of a metal salt of 8-quinolinol or of an 8-quinolinol derivative as a corrosion inhibitor. The metal salt of 8-quinolinol or of an 8-quinolinol derivative is formed by coordination with a metal selected from the group consisting of Cu, Be, Mg, Ca, Sr, Ba, Zn, Cd, Al, Ga, In, TI, Yt, La, Pb, Sb, Bi, Cr, Mo, Mn, Fe, Co, Ni, Pd, Ce, and Pr. Examples of quinolinol derivative salts have the structures:

1 . An adhesives composition with improved corrosion inhibition comprising a curable resin, a filler, and optionally a curing agent for the resin, in which the composition further comprises the metal salt of 8-quinolinol or of an 8-quinolinol derivative as a corrosion inhibitor.  
     
     
         2 . The adhesive composition according to  claim 1  in which the metal salt of 8-quinolinol or of an 8-quinolinol derivative is formed by coordination with a metal selected from the group consisting of Cu, Be, Mg, Ca, Sr, Ba, Zn, Cd, Al, Ga, In, TI, Yt, La, Pb, Sb, Bi, Cr, Mo, Mn, Fe, Co, Ni, Pd, Ce, and Pr.  
     
     
         3 . The adhesive composition according to  claim 2  in which the metal salt of 8-quinolinol or of an 8-quinolinol derivative is formed by coordination with a metal selected from the group consisting of Cu, Zn, and Al.  
     
     
         4 . The adhesive composition according to  claim 1 ,  2  or  3 , in which the 8-quinolinol or 8-quinolinol derivative to form the metal salt is selected from the group consisting of  
       
         
           
           
               
               
           
         
       
       in which R is an organic moiety.  
     
     
         5 . The adhesive composition according to  claim 1 ,  2  or  3  in which the 8-quinolinol or 8-quinolinol derivative to form the metal salt is selected from the group consisting of  
       
         
           
           
               
               
           
         
       
     
     
         6 . The adhesive composition according to  claim 1 ,  2 , or  3  in which the curable resin is a maleimide resin, an acrylate or methacrylate resin, an epoxy resin, or a cyanate ester resin.  
     
     
         7 . A method of improving corrosion inhibition of an adhesive comprising a curable resin, a filler, and optionally a curing agent for the resin, the method comprising adding the metal salt of 8-quinolinol or the metal salt of an 8-quinolinol derivative to the composition.  
     
     
         8 . The method according to  claim 7  in which the quinolinol or quinolinol derivative to form the metal salt is selected from the group consisting of:  
       
         
           
           
               
               
           
         
       
       in which R is an organic moiety.  
     
     
         9 . The method according to  claim 7  in which the quinolinol or quinolinol derivative to form the metal salt is selected from the group consisting of  
       
         
           
           
               
               
           
         
       
     
     
         10 . The method according to  claim 7  in which the metal salt of 8-quinolinol or of an 8-quinolinol derivative is formed by coordination with a metal selected from the group consisting of Cu, Be, Mg, Ca, Sr, Ba, Zn, Cd, Al, Ga, In, TI, Yt, La, Pb, Sb, Bi, Cr, Mo, Mn, Fe, Co, Ni, Pd, Ce, and Pr.  
     
     
         11 . The method according to  claim 10  in which the metal salt of 8-quinolinol or of an 8-quinolinol derivative is formed by coordination with a metal selected from the group consisting of Cu, Zn, and Al.  
     
     
         12 . The method according to  claim 7  in which the curable resin is a maleimide resin, an acrylate or methacrylate resin, an epoxy resin, or a cyanate ester resin.