Invention Grant
- Patent Title: Wax for toners for developing electrostatic images, and toner for developing electrostatic images containing the wax
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Application No.: US17283088Application Date: 2019-10-07
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Publication No.: US11754936B2Publication Date: 2023-09-12
- Inventor: Masashi Watanabe , Takeshi Yoshimura , Norifumi Itako
- Applicant: ZEON CORPORATION , NOF CORPORATION
- Applicant Address: JP Tokyo
- Assignee: ZEON CORPORATION,NOF CORPORATION
- Current Assignee: ZEON CORPORATION,NOF CORPORATION
- Current Assignee Address: JP Tokyo; JP Tokyo
- Agency: WHDA, LLP
- Priority: JP 18191815 2018.10.10
- International Application: PCT/JP2019/039434 2019.10.07
- International Announcement: WO2020/075660A 2020.04.16
- Date entered country: 2021-04-06
- Main IPC: G03G9/087
- IPC: G03G9/087 ; G03G9/097 ; G03G9/08

Abstract:
Provided is a wax which is used in a toner, whereby the toner is excellent in low-temperature fixability and heat-resistant shelf stability, the glossiness is improved as compared with the prior art, and the generation of ultrafine particles and the bleeding of the wax are not likely to occur. The wax for toners, wherein the wax is an ester wax generated by esterification of a pentaerythritol and a monocarboxylic acid; wherein the monocarboxylic acid used for the esterification contains a behenic acid, an arachidic acid and a stearic acid; and wherein, with respect to 100% by mass of the monocarboxylic acid, a content ratio of the behenic acid is from 60% by mass to 80% by mass; a content ratio of the arachidic acid is from 5% by mass to 15% by mass; and a content ratio of the stearic acid is from 15% by mass to 25% by mass.
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