Patent ID: 8338500

Claim:
A binder composition for black matrices, the binder composition comprising a copolymer obtained by polymerizing for four different monomers without a macro monomer in the presence of an iso octyl 3-mercaptopropionate and a thermal initiator, wherein the four monomers comprising: a monomer M1, wherein the monomer M1 is in the range from about 7.45% to about 27.08%; a monomer M2, wherein a weight percentage of the monomer M2 in the range from about 54.15% to about 84.5%; a monomer M3, wherein a weight percentage of the monomer M3 is in the range from about 10.02% to about 15.1%; a monomer M4, wherein a weight percentage of the monomer M4 is in the range from about 5.59% to about 27.08%; wherein a weight percentage of the iso octyl 3-mercaptopropionate is in the range from about 0.7% to about 9.57%; and a weight percentage of the thermal initiator is in the range from about 0.56% to about 5.42%; the monomer M1 is represented by the following formula: the monomers M2, M3 and M4 are represented by the following formula: wherein R1, R2, R3 are selected from the group consisting of hydrogen and alkyl group; R4 is an aromatic group; R5 is selected from the group consisting of hydrogen, aromatic group, alkyl group, substituted alkyl group, and alkyl group interrupted by oxygen atom.