申请人:Sujeeth Puthalath K.
公开号:US20120118205A1
公开(公告)日:2012-05-17
A method of modifying a pigment that includes reacting a reactive compound having an X—[Y]
n
reactive group with a secondary compound N—S—ZM to form a substituted reactive intermediate [Y]
a
—X—(N—S—ZM)
b
. A pigment is reacted with the substituted reactive intermediate [Y]
a
—X—(N—S—ZM)
b
to attach the substituted reactive intermediate to the surface of the pigment to form a surface modified pigment. X may be a sulfonyl, phosphoryl, or 1,3,5-triazinyl group, Y may be a halogen leaving group, N may be a basic nucleophilic group, S may be an organic group, and ZM may be an ionizable end group. Also, n is an integer between 1 and 3, b is an integer between 1 and 3, and a=n−b. When n is equal to or greater than b, and if b is 2 or 3, each N—S—ZM can be the same or different.