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公开(公告)号：US20220269188A1
公开(公告)日：2022-08-25
申请号：US17623087
申请日：2020-04-30
Applicant: Kao Corporation
Inventor： Kota IJICHI , Kunihiro KANO , Nobumichi KAMIYOSHI
IPC: G03G9/087 , C08G63/183
Abstract: A resin binder composition for toners, containing a polyester resin A that is a polycondensate of an alcohol component containing 80% by mol or more of an aliphatic diol having 2 or more carbon atoms and 6 or less carbon atoms and a carboxylic acid component containing an aromatic dicarboxylic acid compound and an amorphous acid modified product A of an α-olefin polymer having 4 or more carbon atoms and 18 or less carbon atoms; and a toner for electrostatic image development, containing these resin binder composition for toners. The resin binder composition for toners of the present invention is suitably used for a toner for electrostatic image development which is usable in development of latent images formed in, for example, electrostatic image development method, electrostatic recording method, electrostatic printing method or the like.
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公开(公告)号：US20180196366A1
公开(公告)日：2018-07-12
申请号：US15107155
申请日：2014-12-24
Applicant: KAO CORPORATION
Inventor： Shogo WATANABE , Kunihiro KANO
CPC classification number: G03G9/0806 , G03G9/081 , G03G9/0812 , G03G9/0819 , G03G9/0821 , G03G9/08755 , G03G9/08762 , G03G9/08782
Abstract: A toner for electrophotography obtained by a method including: step 1: mixing a polyester and a polylactic acid at a temperature of 140° C. or higher and 200° C. or lower and subjecting the mixture to a transesterification reaction to provide a resin composition; and step 2: mixing the resin composition obtained in step 1 with a polyester which is identical to and/or different from the polyester of step 1, and a method for producing the toner. The toner for electrophotography of the present invention is suitably used in developing latent images formed in an electrophotographic method, an electrostatic recording method, an electrostatic printing method, or the like.
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公开(公告)号：US20190354033A1
公开(公告)日：2019-11-21
申请号：US16331297
申请日：2017-09-15
Applicant: Kao Corporation
Inventor： Nobumichi KAMIYOSHI , Yuri NANNICHI , Kunihiro KANO , Akito ITOI , Tatsuya YAMADA
Abstract: A liquid developer containing a resin binder, a colorant, a dispersant, and an insulating liquid, wherein the resin binder contains a resin having an acidic group, and wherein the dispersant contains a dispersant X having at least one basic nitrogen-containing group selected from the group consisting of an amino group, an imino group, a cyano group, an azo group, a diazo group, and an azide group, and wherein a melting point of the dispersant X is 34° C. or higher; and a method for printing a fused image using the liquid developer. The liquid developer of the present invention is suitably used in development or the like of latent images formed in, for example, electrophotography, electrostatic recording method, electrostatic printing method or the like.
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Patent Agency Ranking
公开(公告)号：US20220382179A1
公开(公告)日：2022-12-01
申请号：US17622444
申请日：2020-04-30
Applicant: Kao Corporation
Inventor： Kota IJICHI , Kunihiro KANO , Nobumichi KAMIYOSHI
IPC: G03G9/087 , C08L67/02 , C08G63/672 , C08G63/183
Abstract: A resin binder composition for toners, containing a polyester resin A which is a polycondensate A of raw materials A containing an alkylene oxide adduct of bisphenol A, an aromatic dicarboxylic acid compound, a trivalent or higher polyvalent raw material monomer which is at least any one members of a trihydric or higher polyhydric alcohol and a tricarboxylic or higher polycarboxylic acid compound, and an amorphous acid modified product A of an α-olefin polymer having 4 or more carbon atoms and 18 or less carbon atoms, the polyester resin A having a softening point of 120° C. or more and 150° C. or less; and a toner for electrostatic image development, containing these resin binder composition for toners. The resin binder composition for toners of the present invention is suitably used for a toner for electrostatic image development which is usable in development of latent images formed in, for example, electrostatic image development method, electrostatic recording method, electrostatic printing method or the like.
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公开(公告)号：US20200379367A1
公开(公告)日：2020-12-03
申请号：US16971102
申请日：2019-05-20
Applicant: Kao Corporation
Inventor： Tatsuya YAMADA , Kunihiro KANO
Abstract: A liquid developer containing toner particles containing a resin binder and a colorant, an amino group-containing copolymer, and an insulating liquid, wherein the resin binder contains a polyester-based resin, and wherein the amino group-containing copolymer is a polymerized product of a monomer A having an amino group and a monomer B represented by the formula (I): wherein R1 is a hydrogen atom or a hydrocarbon group having 1 or more carbon atoms and 5 or less carbon atoms; and R2 is a hydrocarbon group having 1 or more carbon atoms and 22 or less carbon atoms, which may have a substituent, wherein the liquid developer satisfies: Requirement 1: an amine value of the amino group-containing copolymer of 165 mgKOH/g or more, and a conductivity of the liquid developer being 5.0×10−9 S/m or less; or Requirement 2: the liquid developer further containing an acid compound. The liquid developer of the present invention is suitably used in development or the like of latent images formed in, for example, electrophotography, electrostatic recording method, electrostatic printing method or the like.
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公开(公告)号：US20250053107A1
公开(公告)日：2025-02-13
申请号：US18720368
申请日：2022-12-28
Applicant: KAO CORPORATION
Inventor： Kunihiro KANO , Kanta NIIYA , Nobuaki OKAUCHI
IPC: G03G9/087 , C08G63/183 , G03G9/093
Abstract: An electrostatic image development toner containing an amorphous resin and a crystalline resin as binder resins. The amorphous resin contains an amorphous polyester resin (A) that is a polycondensate of an alcohol component (a) containing 80 mol % or more of an aliphatic diol (a1) and a carboxylic acid component (b), the alcohol component (a) contains 60 mol % or more of an aliphatic diol (a2) having 5 or 6 carbon atoms and having an alkyl group on a side chain, and the crystalline resin contains a crystalline polyester resin (C) that is a polycondensate of an aliphatic alcohol (c) and a carboxylic acid component (d).
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公开(公告)号：US20220373910A1
公开(公告)日：2022-11-24
申请号：US17622601
申请日：2020-04-30
Applicant: Kao Corporation
Inventor： Kota IJICHI , Kunihiro KANO , Nobumichi KAMIYOSHI , Akitaka MITSUJI
Abstract: A resin binder composition for toners, containing a polyester resin A having a constituting unit derived from an alcohol component containing an alkylene oxide adduct of bisphenol A and a constituting unit derived from a carboxylic acid component containing an amorphous acid modified product A of an α-olefin polymer having 4 or more carbon atoms and 18 or less carbon atoms; a resin binder composition for toners containing a polyester resin A which is a polycondensate of an alcohol component containing an alkylene oxide adduct of bisphenol A and a carboxylic acid component containing an amorphous acid modified product A of an α-olefin polymer having 4 or more carbon atoms and 18 or less carbon atoms; and a toner for electrostatic image development, containing these resin binder composition for toners. The resin binder composition for toners of the present invention is suitably used for a toner for electrostatic image development which is usable in development of latent images formed in, for example, electrostatic image development method, electrostatic recording method, electrostatic printing method or the like.
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公开(公告)号：US20190171126A1
公开(公告)日：2019-06-06
申请号：US16326995
申请日：2017-08-25
Applicant: Kao Corporation
Inventor： Nobumichi KAMIYOSHI , Tatsuya YAMADA , Taiki YAMAMOTO , Kunihiro KANO
Abstract: A liquid developer containing toner particles containing a resin binder containing a polyester-based resin and a colorant, a dispersant, and an insulating liquid, wherein the dispersant contains a dispersant X having an adsorbing group having a nitrogen-containing group represented by the formula (I): wherein each of R1, R2, and R3, which may be identical or different, is an alkylene group having 1 or more carbon atoms and 22 or less carbon atoms, an alkenylene group having 2 or more carbon atoms and 22 or less carbon atoms, an alkynylene group having 2 or more carbon atoms and 22 or less carbon atoms, or an arylene group having 6 or more carbon atoms and 22 or less carbon atoms, and a dispersing group having a hydrocarbon group having a number-average molecular weight of 500 or more, and wherein the dispersant X has a mass ratio of the adsorbing group to the dispersing group (adsorbing group/dispersing group) of 1/99 or more and 42/58 or less, and a proportion of the dispersing group having a hydrocarbon group having a number-average molecular weight of 500 or more in all the dispersing groups of 55% by mass or more. The liquid developer of the present invention is suitably used in development or the like of latent images formed in, for example, electrophotography, electrostatic recording method, electrostatic printing method or the like.
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