Dye-containing negative curable composition, color filter and method for producing the same

Abstract

The present invention provides a dye-containing negative curable composition comprising at least two dyes (A), an oxime photopolymerization initiator (B) and a radical polymerizable monomer (C); or a dye-containing negative curable composition comprising at east two organic-solvent soluble dyes (A), an oxime photopolymerization initiator (B), a radical polymerizable monomer (C) and an organic solvent (D), wherein the moisture content of the composition is less than 1% by mass relative to the total amount of the composition.

1 . A dye-containing negative curable composition comprising at least two dyes (A) independently selected from a heterocyclic azo compound, a phthalocyanine compound and an azomethine compound, at least one oxime photopolymerization initiator (B) and at least one radical polymerizable monomer (C); and
 wherein:   the heterocyclic azo compound has an azo group directly linked to a heterocycle selected from the group consisting of furan, pyrrole, pyrazoline, imidazole, oxazole, pyran, pyridine, pyrimidine, pyrazine, triazine, pyridone, isothiazole, and benzoxazole;   at least one of the dyes comprises an acid group; and   the at least one radical polymerizable monomer (C) includes a radical polymerizable monomer represented by formula (V-1) or (V-2):   
       
         
           
           
               
               
           
         
         wherein 
         in formula (V-1), n is an integer from 0 to 14 and m is an integer from 1 to 8, 
         in formula (V-2), W is R or X having the same meaning as in formula (V-1), three or more of Ws within six Ws are R, p is an integer from 0 to 14, q is an integer from 1 to 8 and plural R, X, T and G in one molecule may be the same or different to one another; and 
         in formulae (V-1) and (V-2), the terminal at the carbon atom side is linked to R, X or W when T or G is an oxyalkylene group. 
       
     
     
         2 . The dye-containing negative curable composition according to  claim 1 , wherein the at least two dyes are independently selected from a nitrogen-containing-heterocyclic azo compound, a phthalocyanine compound substituted with an organic group and an azomethine compound containing a nitrogen-containing heterocyclic group. 
     
     
         3 . The dye-containing negative curable composition according to  claim 1 , wherein the at least two dyes comprise one of the combinations of two compounds (1) to (3) below:
 (1) a pyrazole azo compound and a pyridone azo compound;   (2) a phthalocyanine compound substituted with a sulfur containing organic group and a pyrazole azo compound; or   (3) a phthalocyanine compound substituted with a sulfur containing organic group and a pyrazolotriazole-containing azomethine compound.   
     
     
         4 . The dye-containing negative curable composition according to  claim 1 , wherein at least two of the dyes comprise acid groups. 
     
     
         5 . The dye-containing negative curable composition according to  claim 1 , wherein the mass ratio (B′/C′) of the total amount (B′) of the photopolymerization initiator containing the oxime photopolymerization initiator (B) to the total amount (C′) of the radical polymerizable monomer (C) is in the range from 0.25 to 0.75. 
     
     
         6 . The dye-containing negative curable composition according to  claim 1 , wherein the content of the oxime photopolymerization initiator (B) is 9% by mass or more relative to the total solids in the dye-containing negative curable composition. 
     
     
         7 . A color filter formed using the dye-containing negative curable composition according to  claim 1 . 
     
     
         8 . A method for producing a color filter comprising: applying the dye-containing negative curable composition according to  claim 1  onto a substrate; then forming a pattern by exposing the applied composition through a mask and developing. 
     
     
         9 . A dye-containing negative curable composition comprising at least two organic solvent-soluble dyes (A) independently selected from heterocyclic azo compounds, phthalocyanine compounds and azomethine compounds, at least one oxime photopolymerization initiator (B), at least one radical polymerizable monomer (C) and at least one organic solvent (D), wherein the moisture content of the composition is less than 1% by mass relative to the total amount of the composition; and
 wherein:   the heterocyclic azo compound has an azo group directly linked to a heterocycle selected from the group consisting of furan, pyrrole, pyrazoline, imidazole, oxazole, pyran, pyridine, pyrimidine, pyrazine, triazine, pyridone, isothiazole, and benzoxazole;   at least one of the organic solvent-soluble dyes contains an acid group; and   the at least one radical polymerizable monomer (C) includes a radical polymerizable monomer represented by formula (V-1) or (V-2):   
       
         
           
           
               
               
           
         
         wherein 
         in formula (V-1), n is an integer from 0 to 14 and m is an integer from 1 to 8, 
         in formula (V-2), W is R or X having the same meaning as in formula (V-1), three or more of Ws within six Ws are R, p is an integer from 0 to 14, q is an integer from 1 to 8 and plural R, X, T and G in one molecule may be the same or different to one another; and 
         in formulae (V-1) and (V-2), the terminal at the carbon atom side is linked to R, X or W when T or G is an oxyalkylene group. 
       
     
     
         10 . The dye-containing negative curable composition according to  claim 9 , wherein the at least two organic solvent-soluble dyes are selected from nitrogen-containing-heterocyclic azo compounds, phthalocyanine compounds substituted with an organic group and azomethine compounds containing a nitrogen-containing heterocyclic group. 
     
     
         11 . The dye-containing negative curable composition according to  claim 9 , wherein the at least two organic solvent-soluble dyes comprise one of the combinations of two compounds (1) to (3) below:
 (1) a pyrazole azo compound and a pyridone azo compound;   (2) a phthalocyanine compound substituted with a sulfur-containing organic group and a pyrazole azo compound; or   (3) a phthalocyanine compound substituted with a sulfur-containing organic group and a pyrazolotriazole-containing azomethine compound.   
     
     
         12 . The dye-containing negative curable composition according to  claim 9 , wherein at least two of the organic solvent-soluble dyes contain acid groups. 
     
     
         13 . The dye-containing negative curable composition according to  claim 9 , wherein the mass ratio (B′/C′) of the total amount (B′) of the photopolymerization initiator containing the oxime photopolymerization initiator (B) to the total amount (C′) of the radical polymerizable monomer (C) is in the range from 0.25 to 0.75. 
     
     
         14 . The dye-containing negative curable composition according to  claim 9 , wherein the content of the oxime photopolymerization initiator (B) is 9% by mass or more relative to the total solids in the dye-containing negative curable composition. 
     
     
         15 . The dye-containing negative curable composition according to  claim 9  further comprising other photopolymerization initiators other than the oxime photopolymerization initiator (B). 
     
     
         16 . A color filter formed using the dye-containing negative curable composition according to  claim 9 . 
     
     
         17 . A method for producing a color filter comprising: applying the dye-containing negative curable composition according to  claim 9  onto a substrate; forming a pattern by exposing the applied substrate through a mask and developing.