Toner particles having a reduced content of aryl amines or n-arylacetoacetamides and oxidation methods for producing the same
AssigneeXerox Corporation
InventorsJordan A. FRANK, Jing X. SUN, Genggeng QI, Daniel W. ASARESE, Chieh-Min CHENG
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Abstract
Toner particles comprising N-arylacetoacetarylide pigment compositions may contain residual aryl amines in some case. The N-arylacetoacetarylide pigment compositions comprise a diazonium coupling product of a first aryl amine and an N-arylacetoacetamide formed from a second aryl amine. Toner particles containing N-arylacetoacetarylide pigment compositions may be contacted with an oxidant in an aqueous phase to decrease the amount(s) of second aryl amine and/or N-arylacetoacetamide that remain present within the toner particles.
Claims18
A method comprising:
- providing toner particles comprising an N-arylacetoacetarylide pigment composition, the N-arylacetoacetarylide pigment composition comprising a diazonium coupling product of a first aryl amine and an N-arylacetoacetamide formed from a second aryl amine;
- wherein the N-arylacetoacetarylide pigment composition comprises at least some residual N-arylacetoacetamide that has not undergone diazonium coupling and/or at least some residual second aryl amine that has not reacted to form the N-arylacetoacetamide and/or has hydrolyzed from the N-arylacetoacetamide;
- and
- contacting the toner particles with an oxidant in an aqueous phase at a temperature and for a time sufficient to decrease a concentration of at least the residual second aryl amine in the toner particles.
A toner composition comprising:
- toner particles comprising an N-arylacetoacetarylide pigment composition, the N-arylacetoacetarylide pigment composition comprising a diazonium coupling product of a first aryl amine and an N-arylacetoacetamide formed from a second aryl amine;
- wherein a concentration of residual second aryl amine in the toner particles is about 20 ppm or below.
Dependencies are inferred from the claim text.