Self-dispersed pigments and methods for making and using the...

Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...

Reexamination Certificate

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C106S410000, C106S412000, C106S413000, C106S476000, C106S494000, C106S495000, C106S496000, C106S497000, C106S498000, C106S499000

Reexamination Certificate

active

07964033

ABSTRACT:
A method of modifying a pigment that includes reacting a reactive compound having an X-[Y]nreactive 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)bto 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.

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