Phosphorus-containing flame-retardant hardeners, epoxy resins, advanced epoxy resins and cured epoxy resins

Abstract

The present invention discloses an active-hydrogen-containing phosphorus compound for cross-linking a resin and for imparting flame-retardancy to the cured resin, and in particular to a cured frame-retardant epoxy resin prepared by reacting the hardener with a di- or poly-functional epoxy resin via an addition reaction between the active hydrogen and the epoxide group. The present invention also discloses an epoxy resin made from the active-hydrogen-containing phosphorus compound and epihalohydrin.

1 - 25 . (Cancelled).  
     
     
         26 . A phosphorus-containing frame-retardant advanced epoxy resin and cured epoxy resin having the following formula (J):  
       
         
           
           
               
               
           
         
       
       wherein 
 0<h<10;  
 T=L or M, wherein  
                     
 the formula (J) represents the advanced epoxy resin, when T=L; and the formula (J) represents the cured epoxy resin, when T=M;  
                     
 wherein l and m are independently are 0, 1 or 2, and l+m>0;  
                     
 wherein  
 R 1 , R 2  independently are H, C1˜C18 alkyl, C6˜C18 aryl, C6˜C18 substituted aryl, C6˜C18 aryl methylene, or C6˜C18 substituted aryl methylene;  
                     
 wherein R is C1-C4 alkyl or C6-C18 aryl; and n is an integer of 0 to 5;  
 Ep is  
                     
 or a phenol-aldehyde novolac epoxy resin backbone, and when Ep is the phenol-aldehyde novolac epoxy resin backbone, the flame-retardant advanced epoxy resin and the cured epoxy resin represented by the formula (J) is prepared by reacting a phosphorus-containing flame-retardant hardener having the following formula (A) with a phenol-aldehyde novolac epoxy resin having the following formula (II)  
                     
 wherein Q, X, l and m are defined as above;  
                     
 wherein R 3  is hydrogen, or —CH 3 , and g is an integer of 1-6.  
 
     
     
         27 . The phosphorus-containing frame-retardant advanced epoxy resin and cured epoxy resin according to  claim 26 , wherein Ep in the formula (J) is  
       
         
           
           
               
               
           
         
       
       wherein Y is —C(CH 3 ) 2 —.  
     
     
         28 . The phosphorus-containing frame-retardant advanced epoxy resin and cured epoxy resin according to  claim 26 , wherein Ep in the formula (J) is the phenol-aldehyde novolac epoxy resin backbone, wherein R 3  in the phenol-aldehyde novolac epoxy resin (II) is —CH 3 .  
     
     
         29 . The phosphorus-containing frame-retardant advanced epoxy resin and cured epoxy resin according to  claim 26 , wherein R 1  and R 2  are hydrogen, and n is 0.  
     
     
         30 . The phosphorus-containing frame-retardant advanced epoxy resin and cured epoxy resin according to  claim 26 , wherein X is  
       
         
           
           
               
               
           
         
       
     
     
         31 - 37 . (Cancelled).