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US 6,184,387 B2Granted
2-(1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)acetamides negative charge control agents for electrostatographic toners and developers
AssigneeEastman Kodak Company
InventorsJohn C. Wilson, Robert D. Fields, Gretchen S. McGrath, Satyanarayan A. Srinivasan
Life of this patent
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Abstract
The invention, in its broader aspects provides an electrophotographic toner having polymeric binder and 2-(1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)acetamides as charge control agent. wherein n is 1 or 2; R and R1 are defined in the specification. The compounds are useful as charge-control agents in electrostatographic toners and developers.
Claims5
A 2-(1,2-benzisothiazol-3(2H)-ylidene 1,1-dioxide)acetamide compound, useful as a charge-control agent, having the following structure
- wherein n is 1 or 2;
- R and R1 independently represent hydrogen;
- linear, branched or cyclic, substituted or unsubstituted C1 to C18 alkyl;
- substituted or unsubstituted C6 to C10 aryl;
- substituted or unsubstituted C7 to C11 aralkyl;
- substituted or unsubstituted C5 to C10 heterocyclic ring with the proviso that R and R1 are not simultaneously hydrogen;
- or R and R1, together with N form a ring structure;
- with the proviso that when n is 2, then R1 is a divalent group.
5 more elements
Dependencies are inferred from the claim text.