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US 6,552,211 B2Granted
Zirconium compound and electrophotographic toner employing it
AssigneeHodogaya Chemical Co., Ltd.
InventorsMasataka Sawano, Taito Muraoka, Katuya Yamaguti, Rie Murakami, Hiroyoshi Yamaga
Life of this patent
Estimating the term…
Abstract
The present invention relates to a novel zirconium compound which is useful as a charge control agent for an electrophotographic toner. Further, it relates to an electrophotographic toner which contains said zirconium compound as a charge control agent.
Claims3
A zirconium compound represented by the following formula (2):
- wherein t-Bu is a tertiary butyl group, m is an integer of from 1 to 20, s is an integer of from 1 to 20 and r is an integer of from 3 to 20.
A zirconium compound which is represented by the following formula (3):
- wherein R1 and R2 are hydrogen or an alkyl group, 1 is 0 or an integer of from 1 to 4, o is 0 or an integer of from 1 to 4, m is an integer of from 1 to 20, s is an integer of from 1 to 20, r is an integer of from 1 to 20, and r/m=5/4.
Dependencies are inferred from the claim text.