Polyarylate resin and electrophotographic photosensitive member
AssigneeKYOCERA Document Solutions Inc.
InventorsJun Azuma, Keiji Maruo, Kenji Kitaguchi
Life of this patent
Estimating the term…
Abstract
A polyarylate resin includes repeating units represented by formulas (1), (2), (3), and (4). A percentage of the number of repeats of the repeating unit represented by formula (3) relative to the total number of repeats of the respective repeating units represented by formulas (1) and (3) is greater than 0% and less than 20%. In formula (1), R1 and R2 each represent, independently of one another, a hydrogen atom or a methyl group and X represents a divalent group represented by formula (X1) or (X2). In formula (2), W represents, a divalent group represented by formula (W1) or (W2).
Claims12
A polyarylate resin comprising
- repeating units represented by formulas (1), (2), (3), and (4), wherein
- a percentage of a number of repeats of the repeating unit represented by the formula (3) relative to a total number of repeats of the respective repeating units represented by the formulas (1) and (3) is greater than 0% and less than 20%,
- where in the formula (1), R1 and R2 each represent, independently of one another, a hydrogen atom or a methyl group and X represents a divalent group represented by formula (X1) or (X2), and
- in the formula (2), W represents a divalent group represented by formula (W1) or (W2),
- where in the formula (X1), t represents an integer of at least 1 and no greater than 3 and * represents a bond, and
- in the formula (X2), R3 and R4 each represent a hydrogen atom or an alkyl group with a carbon number of at least 1 and no greater than 4, R3 and R4 represent groups different from each other, and * represents a bond, and
- in the formulas (W1) and (W2), * represents a bond.
Dependencies are inferred from the claim text.