-
公开(公告)号：US11841678B2
公开(公告)日：2023-12-12
申请号：US16967324
申请日：2019-02-08
Applicant: KAO CORPORATION
Inventor： Shoichi Murata , Manabu Suzuki , Yuki Wakabayashi
CPC classification number: G03G9/0804 , G03G9/0819 , G03G9/08755 , G03G9/08782 , G03G9/0904 , G03G15/08
Abstract: A method for producing a toner, including aggregating and coalescing resin particles and colorant particles in an aqueous medium. The resin particles contain, in the same or different particles, an amorphous polyester-based resin which is a polycondensate of an alcohol component containing an aromatic alcohol and a carboxylic acid component, and a crystalline polyester resin. The colorant particles contain a colorant and an addition polymer of a raw material monomer containing an addition-polymerizing monomer having an aromatic group. A ratio by mass of the colorant to the addition polymer in the colorant particles is 50/50 or more and 95/5 or less.
-
公开(公告)号：US11768446B2
公开(公告)日：2023-09-26
申请号：US16967274
申请日：2019-02-08
Applicant: KAO CORPORATION
Inventor： Shoichi Murata , Manabu Suzuki , Yuki Wakabayashi
CPC classification number: G03G9/0804 , G03G9/0819 , G03G9/0827 , G03G9/08711 , G03G9/08755 , G03G9/0904
Abstract: A method for producing a toner, including aggregating and coalescing resin particles and colorant particles. The resin particles contain a composite resin containing a polyester resin segment, an addition polymer resin segment which is an addition polymerized product of a raw material monomer containing a styrenic compound, and a structural unit derived from a bireactive monomer bonding to the polyester resin segment and the addition polymer resin segment via a covalent bond. The colorant particles contain a colorant and an addition polymer of a raw material monomer containing a styrenic compound. The addition polymer contains a structural unit derived from the styrenic compound in the main chain. A ratio by mass of the colorant to the addition polymer in the colorant particles is 50/50 or more and 95/5 or less.
-
公开(公告)号：US10394149B2
公开(公告)日：2019-08-27
申请号：US15572687
申请日：2016-05-18
Applicant: Kao Corporation
Inventor： Tomohide Yoshida , Shoichi Murata , Manabu Suzuki , Eiji Shirai
Abstract: The present invention provides a toner for development of electrostatic images including a polyester-based resin and a polypropylene-based wax, which is excellent in fusing properties on a polypropylene film. The present invention relates to [1] a resin binder composition for toners for development of electrostatic images which has an endothermic amount ratio ΔHCW/W of not less than 0.10 and not more than 0.80, [2] a resin binder composition for toners for development of electrostatic images in which a volume-median particle size (D50) of a wax as a whole contained therein is not less than 1 μm and not more than 50 μm; a volume-median particle size (D50) of a small particle size component of the wax is not less than 20 nm and not more than 400 nm; and a content of the small particle size component in the wax is not less than 20% by mass and not more than 90% by mass, [3] a process for producing a resin binder composition for toners for development of electrostatic images in which a polypropylene-based wax is added to a reaction system prior to addition polymerization upon production of a composite resin as a resin binder; and [4] a toner for development of electrostatic images including the resin binder composition as described in the above [1] or [2].
-
-
Search Results
3
records
(took 0.014 seconds)
