Modified pigments and methods for making and using the same

Details Modified pigments and methods for making and using the same Modified pigments and methods for making and using the same

2011-04-19

2011-04-19

Green, Anthony J (Department: 1793)

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

C106S410000, C106S411000, C106S412000, C106S413000, C106S473000, C106S476000, C106S494000, C106S495000, C106S496000, C106S497000, C106S498000, C106S499000

Reexamination Certificate

active

07927416

ABSTRACT:
A method of producing a modified pigment by sulfonating a pigment and subsequently oxidizing the pigment. The modified pigment may have sulfonic acid and carboxyl surface modifying groups attached to the surface of the pigment. Charge balancing counterions such as alkali metals, alkaline earth metals and NR1R2R3H+, where R1, R2and R3are independently H or C1-C5alkyl groups, may be associated with the surface modifying groups. The modified pigment is combined with water to produce a dispersion that can be used in such applications as coatings, paints, papers, adhesives, latexes, toners, textiles, fibers, plastics and inks.

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