Patent ID: 7544216

Claim:
A polymeric leuco colorant selected from the group consisting of Structure I and Structure II as shown below: wherein: R 1 =H, dialkyl amine, diarylamine, alkylamine, hydroxyl, halogen, O-alkyl, polyalkylene oxide amine, or monoalkyl-polyalkyene oxide amine; R 2 =C 1 -C 18 alkyl, aryl, benzyl, polyalkylene oxide, or glycidylether-polyalkylene oxide wherein the terminal group is selected from hydroxide, C 1 -C 18 alkyl ester, and an amino substituted with H, C 1 -C 18 alkyl, alkyleneoxide residue, or ammonium quaternary salts derived from alkylation of the amino substituted structure; R 3 =C 1 -C 18 alkyl, aryl, benzyl, polyalkylene oxide, or glycidylether-polyalkylene oxide wherein the terminal group is selected from hydroxide, C 1 -C 18 alkyl ester, and an amino substituted with H, C 1 -C 18 alkyl, alkyleneoxide residue, or ammonium quaternary salts derived from alkylation of the amino substituted structure; R 4 =C 1 -C 18 alkyl, aryl, benzyl, polyalkylene oxide, or glycidylether-polyalkylene oxide wherein the terminal group is selected from hydroxide, C 1 -C 18 alkyl ester, and an amino substituted with H, C 1 -C 18 alkyl, alkyleneoxide residue, or ammonium quaternary salts derived from alkylation of the amino substituted structure; R 5 =C 1 -C 18 alkyl, aryl, benzyl, polyalkylene oxide, or glycidylether-polyalkylene oxide wherein the terminal group is selected from hydroxide, C 1 -C 18 alkyl ester, and an amino substituted with H, C 1 -C 18 alkyl, alkyleneoxide residue, or ammonium quaternary salts derived from alkylation of the amino substituted structure; wherein X=carbon or sulfur and n=1 when X=carbon and n=2 when X=sulfur; G 1-3 , Y, and Z are independently selected from the group of alkyl, H, halogen, nitro, and O-alkyl; wherein Y and G 3 taken together may form an aromatic or heteroaromatic ring; wherein Z and G 2 taken together may form an aromatic or heteroaromatic ring; wherein R 2 and G 2 taken together may form an aromatic or heteroaromatic ring; wherein R 4 and G 3 taken together may form an aromatic or heteroaromatic ring.