Patent ID: 8900779

Claim:
A method for producing a color filter, which comprises coating a substrate with a color filter composition, followed by exposure to effect photo-cure of the color filter composition, and development, wherein the color filter composition comprises a) a photoresist binder, wherein the photoresist binder is a (meth)acrylate/(meth)acrylic acid copolymer, b) a transparent pigment, c) optionally a solvent and/or optionally a photoinitiator or a photolatent catalyst, d) a dispersant which is a polymer or copolymer obtained by a process comprising the steps of a1) polymerizing in a first step one or more ethylenically unsaturated monomers in the presence of at least one nitroxylether having the structural element wherein X represents a group having at least one carbon atom and is such that the free radical X• derived from X is capable of initiating polymerization; or a2) polymerizing in a first step one or more ethylenically unsaturated monomers in the presence of at least one stable free nitroxyl radical and a free radical initiator; wherein at least one monomer used in the steps a1) or a2) is a C 1 -C 6 alkyl or hydroxyl C 1 -C 6 alkyl ester of acrylic or methacrylic acid; and a second step b) comprising modification of the polymer or copolymer prepared under a1) or a2) by a transesterification reaction, an amidation, hydrolysis or anhydride modification or a combination thereof; and optionally in addition by quaternization.