Patent ID: 9732227
Date: 2017-08-15
CPC Classifications: B82Y,C01P,C08K,C08L,C09B,C09C,C09D

Claim:
1. A modified colorant comprising a colorant having attached at least one organic group, wherein the organic group has a calcium index value greater than a calcium index value of 1,2,3-benzene tricarboxylic acid, wherein the colorant is a pigment and wherein the organic group comprises at least one group selected from: (i) at least one hydroxamic acid group or salt thereof selected from at least one hydroxy pyridonyl group and at least one hydroxy quinolonyl group; (ii) at least one heterocyclic group having at least one OH group or salt thereof; (iii) at least one phosphonic acid group or a salt thereof and at least one second ionic, ionizable, or basic group vicinal or geminal to the phosphonic acid group or salt thereof; (iv) a heteroaryl group having at least one carboxylic acid group or salt thereof; (v) an aryl group having at least one nitroso group and at least one OH group or a salt thereof; and (vi) an azoarene group having at least two OH groups, at least two NH