Binder resin for electrostatic image developing toner,...

Details Binder resin for electrostatic image developing toner,... Binder resin for electrostatic image developing toner,...

2005-12-12

2009-06-16

Chapman, Mark A (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

C430S137140, C430S124100, C524S846000, C524S611000, C525S168000

Reexamination Certificate

active

07547500

ABSTRACT:
A binder resin for an electrostatic image developing toner, obtained by polycondensation reaction of a polycarboxylic acid and a polyol, wherein the polycarboxylic acid comprises at least one of a compound represented by formula (1) and a compound represented by formula (2) in an amount of from 50 to 100 mol %, the polyol comprises a compound represented by formula (3) in an amount of from 50 to 100 mol %, and a content of a catalyst-originated metal element in the resin is 100 ppm or less:in-line-formulae description="In-line Formulae" end="lead"?R1OOCA1mB1nA1lCOOR1′  (1)in-line-formulae description="In-line Formulae" end="tail"?(wherein A1is a methylene group, B1is an aromatic hydrocarbon group, R1and R1′each is a hydrogen atom or a monovalent hydrocarbon group, 1≦m+1≦12, and 1≦n≦3);in-line-formulae description="In-line Formulae" end="lead"?R2OOCA2pB2qA2rCOOR2′  (2)in-line-formulae description="In-line Formulae" end="tail"?(wherein A2is a methylene group, B2is an alicyclic hydrocarbon group, R2and R2′each is a hydrogen atom or a monovalent hydrocarbon group, 0≦p≦6, 0≦r≦6, and 1≦q≦3);in-line-formulae description="In-line Formulae" end="lead"?HOXhYjXkOH  (3)in-line-formulae description="In-line Formulae" end="tail"?(wherein X is an alkylene oxide group, Y is a bisphenol structure group, 1≦h+k≦10, and 1≦j≦3).

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