Polymer and epoxy resin compositions

Abstract

The present invention provides a vinyl polymer with an epoxy group terminally introduced therein and an epoxy resin composition comprising (A) an epoxy resin and (B) a vinyl polymer which has a main chain produced by living radical polymerization and has a reactive functional group at a main chain terminus. A flexible epoxy resin composition can be obtained using these compounds. The invention further provides an epoxy resin composition having an epoxy group at a main chain terminus thereof.

1 - 37 . (canceled)  
   
   
       38 . An epoxy resin composition which comprises a vinyl polymer having a group represented by the following general formula (1) at a main chain terminus thereof:  
     
       
         
         
             
             
         
       
     
     wherein, R 1 , R 2  and R 3  are the same or different and each represents a hydrogen atom, a monovalent hydrocarbon group containing 1 to 10 carbon atoms or a monovalent group containing 1 to 10 carbon atoms as derived from two hydrocarbon groups by being bound together via an ether bond or ester bond, and R 1  and R 2  or R 2  and R 3  may be combined together at respective other termini to form a cyclic structure; 
 wherein the vinyl polymer having a group represented by the general formula (1) at a main chain terminus thereof is obtained by reacting a reactive functional group of a vinyl polymer having the reactive functional group at a main chain terminus thereof with a compound represented by the following general formula (2):  
                     
 wherein, R 1 , R 2  and R 3  are defined as above, R 4  and R 5  are the same or different and each represents a hydrogen atom, a monovalent hydrocarbon group containing 1 to 10 carbon atoms or a monovalent group containing 1 to 10 carbon atoms as derived from two hydrocarbon groups by being bound together via an ether bond or ester bond and X represents a chlorine, bromine or iodine atom;  
 wherein the vinyl polymer having the reactive functional group at a main chain terminus thereof is obtained by  
 (1) carrying out polymerization of a vinyl monomer by the living radical polymerization technique and  
 (2) reacting, at the end point of the polymerization, the resulting polymer with a compound having both a reactive functional group and an ethylenically unsaturated group.  
 
   
   
       39 . A vinyl polymer having a group represented by the following general formula (1) at a main chain terminus thereof:  
     
       
         
         
             
             
         
       
     
     wherein, R 1 , R 2  and R 3  are the same or different and each represents a hydrogen atom, a monovalent hydrocarbon group containing 1 to 10 carbon atoms or a monovalent group containing 1 to 10 carbon atoms as derived from two hydrocarbon groups by being bound together via an ether bond or ester bond, and R 1  and R 2  or R 2  and R 3  may be combined together at respective other termini to form a cyclic structure. 
 which polymer is obtained by reacting a reactive functional group of a vinyl polymer having the reactive functional group at a main chain terminus thereof with a compound represented by the following general formula (2):  
                     
 wherein, R 1 , R 2  and R 3  are defined as above, R 4  and R 5  are the same or different and each represents a hydrogen atom, a monovalent hydrocarbon group containing 1 to 10 carbon atoms or a monovalent group containing 1 to 10 carbon atoms as derived from two hydrocarbon groups by being bound together via an ether bond or ester bond and X represents a chlorine, bromine or iodine atom;  
 wherein the vinyl polymer having the reactive functional group at a main chain terminus thereof is obtained by  
 (1) carrying out polymerization of a vinyl monomer by the living radical polymerization technique and  
 (2) reacting, at the end point of the polymerization, the resulting polymer with a compound having both a reactive functional group and an ethylenically unsaturated group.