Macromonomer mixture, terminal-reactive polymer mixture, intermediate for macromonomer and silicone hydrogel

Abstract

To obtain a hydrophilic macromonomer mixture which is a highly polymerized hydrophilic macromonomer, has few components not bonded to the polymer chain after polymerization, and is less likely to leaching. Provided is a macromonomer mixture containing macromonomer A being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a polymerization initiator at an end thereof; and macromonomer B being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a chain transfer agent at an end thereof.

1 . A macromonomer mixture comprising:
 macromonomer A being a macromonomer having a macromer backbone derived from a monomer and having a group obtained by further introducing a polymerizable group into a reactive group derived from a polymerization initiator at an end thereof, wherein the polymerization initiator is a polymerization initiator expressed by any one of the following formulas (j1) to (j4):   
       
         
           
           
               
               
           
         
       
       and
 macromonomer B being a macromonomer having a group obtained by further introducing a polymerizable group into a reactive group derived from a chain transfer agent at an end thereof. 
 
     
     
         2 . (canceled) 
     
     
         3 . The macromonomer mixture of  claim 1 , wherein the reactive group derived from a polymerization initiator and the reactive group derived from a chain transfer agent are each independently at least one kind of functional group selected from the group consisting of a hydroxy group, an amino group, thiol, ester and carboxylic anhydride. 
     
     
         4 - 9 . (canceled) 
     
     
         10 . A production method of the macromonomer mixture of  claim 1 , wherein after radical polymerization of a hydrophilic monomer using the polymerization initiator of formulas (j1) to (j4), and a chain transfer agent having at least one functional group selected from the group consisting of a hydroxy group, an amino group and a carboxyl group in a molecule, a compound having a radically polymerizable functional group is reacted with the resulting polymer mixture. 
     
     
         11 . (canceled) 
     
     
         12 . The production method of the macromonomer mixture of  claim 10 , wherein the chain transfer agent is a chain transfer agent expressed by any one of the following general formulas (d1) to (d5): 
       
         
           
           
               
               
           
         
         wherein L 3  represents a divalent group having 1 to 10 carbon atoms; and R 10  and R 11  represent alkyl having 1 to 20 carbon atoms. 
       
     
     
         13 - 17 . (canceled) 
     
     
         18 . A silicone hydrogel obtained by copolymerizing at least one kind of silicone monomer with at least one kind of monomer mixture containing the macromonomer mixture of  claim 1 . 
     
     
         19 . The macromonomer mixture of  claim 1  wherein the monomer of macromonomer A comprises N-vinylpyrrolidone, N,N-dimethylacrylamide, N-vinylacetamide, or mixtures thereof.