TONER BINDER AND TONER
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United States of America Patent
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Issued Date -
Jan 22, 2015
app pub date -
Feb 25, 2013
filing date -
Feb 29, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
There is provided a toner binder containing a polyester resin (P) composed of two or more polyester resins that are each obtained by polycondensation of a carboxylic acid component (x) and an alcohol component (y). The alcohol component (y) of at least one polyester resin (P1) constituting the polyester resin (P) comprises 30 to 100 molar % of an adduct (y1) of bisphenol A with 2 to 4 ethylene oxide molecules. The alcohol component (y) of at least one other polyester resin (P2) constituting the polyester resin (P) comprises 50 to 95 molar % of an aliphatic diol (y2) having 2 to 4 carbon atoms. The (P2) is other than the (P1), and the polyester resin (P) satisfies relationships as follows. 11.5≦SP value [(cal/cm3)1/2] of (P)≦13.0; and 5.2≦HLB value (according to the Oda method) of (P)≦7.1.
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