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公开(公告)号：US20220127485A1
公开(公告)日：2022-04-28
申请号：US17438812
申请日：2020-03-17
发明人： Yosuke SAKAI , Misaki NARITA , Yasuhiro YOSHIDA , Shinichiro AOYAGI , Yoshikazu MURAKAMI , Hiroyuki SHIMANAKA
IPC分类号： C09D17/00 , C08G65/333 , C08G65/08 , C08F226/06 , C08F220/18 , C08F220/34 , C08F220/14 , C09B67/46 , G03G9/08 , C08K5/00
摘要： The present invention provides an aqueous pigment dispersion liquid being such that a pigment is finely dispersed, and the viscosity, and the particle diameters of the pigment are unlikely to fluctuate, being excellent in storage stability, and enabling preparation of an emulsion-polymerized toner having properly controlled particle diameters while improving the pigment utilization rate. The aqueous pigment dispersion liquid is an aqueous pigment dispersion liquid for an emulsion-polymerized toner containing a pigment, a dispersant, and an aqueous medium. The dispersant is a polymer containing a constitutional unit (A) derived from a monomer (A) such that a group containing a (meth)acryloyloxy group or the like is bonded to one end of a particular polyethylene glycol chain or the like, and a constitutional unit (B) derived from a monomer (B) having a carboxy group or the like, the polymer has a number average molecular weight in terms of polystyrene of 4,000 to 15,000, as measured by gel permeation chromatography, the polymer is contained in a state of being not ionized substantially, and the aqueous pigment dispersion liquid has a pH of 3.0 to 8.4.
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2.发明申请公开(公告)号：US20170306071A1
公开(公告)日：2017-10-26
申请号：US15645650
申请日：2017-07-10
IPC分类号： C08F267/06 , C09D11/326 , C09D11/107 , C09D11/101 , C09B67/46 , C08F222/10 , C08F290/06 , C08K5/3437 , C08K5/3417 , C08K3/04 , C09D17/00 , C08K5/3462 , C08K5/42 , C08F220/18
CPC分类号： C08F267/06 , C08F220/18 , C08F222/10 , C08F290/062 , C08F2438/00 , C08K3/04 , C08K5/3417 , C08K5/3437 , C08K5/3462 , C08K5/42 , C08K2201/003 , C09B67/009 , C09D7/40 , C09D7/45 , C09D11/101 , C09D11/107 , C09D11/326 , C09D17/00 , C08F220/30 , C08F2220/185 , C08F220/34
摘要： The present invention provides a pigment dispersant that exhibits high fine dispersibility, stability, and fluidity in a small amount, a pigment dispersion liquid including the pigment dispersant, and a process of producing the pigment dispersant and pigment dispersion liquid. The pigment dispersant contains as a main component, a graft copolymer formed through living radical polymerization using two or more monomers including a methacrylate A having an acidic group or a basic group and a methacrylate-based macromonomer B having a methacrylate residue at one terminal of a particular polymer chain that has a molecular weight of from 500 to 5000. A ratio of a total molar number of the methacrylate-based monomers relative to 1 mol of a polymerization-initiating compound in the raw material monomers is from 20 to 50 based on 1 mol. A ratio of the B component-derived polymer chain to the graft copolymer is from 50 to 90 mass % expressed as a mass ratio.
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公开(公告)号：US20240191054A1
公开(公告)日：2024-06-13
申请号：US18551135
申请日：2021-10-22
CPC分类号： C08K3/04 , C09K23/018
摘要： There is provided a carbon material dispersion which has excellent dispersibility and in which the dispersibility is retained stably over a long period of time even when the carbon material dispersion contains a carbon material at a high concentration. The carbon material dispersion is a carbon material dispersion containing a carbon material, water, and a polymeric dispersant, wherein the polymeric dispersant is a polymer including 5 to 40% by mass of a constituent unit (1) derived from a monomer 1, such as 2-vinylpyridine, 50 to 80% by mass of a constituent unit (2) derived from a monomer 2 represented by formula (1) (wherein R1 represents a hydrogen atom or the like, A represents O or NH, X represents an ethylene group or a propylene group, Y represents O, NHCOO, or NHCONH, each of R2 represents a hydrogen atom or the like, n represents 20 to 100, and R3 represents a hydrogen atom or the like), and 0.5 to 40% by mass of a constituent unit (3) derived from a monomer 3 copolymerizable with above-described monomers.
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4.发明公开公开(公告)号：US20240132738A1
公开(公告)日：2024-04-25
申请号：US18546549
申请日：2021-11-26
发明人： Hiroyuki SHIMANAKA , Katsuhiko KANO , Kosuke KUME , Chikako MIYAZAKI , Yoshikazu MURAKAMI , Sachio YOSHIKAWA
IPC分类号： C09D11/326 , C08F2/06
CPC分类号： C09D11/326 , C08F2/06 , C08F2500/26
摘要： The present invention provides a polymeric dispersant that is to be blended in an aqueous pigment dispersion in which a pigment is finely dispersed in a stable manner and at a high level, the aqueous pigment dispersion enabling preparation of an aqueous inkjet ink capable of recording an image excellent in adhesiveness and durability on plastic media and textiles. The polymeric dispersant is a polymer that includes a constituent unit (i) derived from styrene, a constituent unit (ii) derived from methyl methacrylate and/or the like, a constituent unit (iii) derived from 2-ethylhexyl methacrylate and/or the like, a constituent unit (iv) derived from 2-hydroxyethyl methacrylate and/or the like, and a constituent unit (v) derived from methacrylic acid, and at least part of carboxy groups is neutralized with an alkali.
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5.发明公开公开(公告)号：US20230357479A1
公开(公告)日：2023-11-09
申请号：US18042735
申请日：2021-08-12
发明人： Hiroyuki SHIMANAKA , Yoshikazu MURAKAMI , Jun KAMABAYASHI , Toshiyasu FUJITA , Kazutaka ARAI , Sachio YOSHIKAWA
IPC分类号： C08F285/00 , C08K5/23 , C08K5/3437 , C08K5/56 , C08K3/04 , C08K3/22 , C09D11/322 , C09D11/326 , C09D11/106
CPC分类号： C08F285/00 , C08K5/23 , C08K5/3437 , C08K5/56 , C08K3/04 , C08K3/22 , C09D11/322 , C09D11/326 , C09D11/106 , C08K2003/2237
摘要： The present invention provides an environmentally friendly pigment dispersant composition that can be produced relatively easily. In this pigment dispersant composition, the content of a volatile component is significantly reduced even though the pigment dispersant composition contains a pigment dispersant mainly containing a constituent unit derived from a vinyl-based monomer, and a pigment dispersion and an ink which are excellent in pigment dispersability can be prepared using this pigment dispersant composition. This pigment dispersant composition contains a polyglycol component and a polymer component having a constituent unit (1) derived from a macromonomer represented by formula (1), wherein R represents a hydrogen atom or a methyl group, R1 represents CH2CH2 or CH2CH2OCH2CH2, and m+n=20 to 100, and a constituent unit (2) derived from a functional group-containing vinyl-based monomer, wherein the polyglycol component is a polyalkylene glycol or the like, and a content of an organic compound having a boiling point of 250° C. or lower is 1% by mass or less.
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6.发明申请公开(公告)号：US20210261713A1
公开(公告)日：2021-08-26
申请号：US17206489
申请日：2021-03-19
IPC分类号： C08F293/00 , C08F220/14 , C08F8/14 , C08F265/06 , C08F8/18 , C08F4/08 , C08F2/06 , C08F2/38 , C08F220/18 , C08F257/02 , C08F263/04 , C08K3/16 , C08K5/101 , C08K5/20 , C08K5/3417 , C08L101/00
摘要： The present invention provides: a novel production technique that enables production of a polymer whose molecular weight and molecular weight distribution are controlled and production of a polymer having a complicated structure in a desirably controlled manner using commercially available materials without using a radical polymerization initiator or a special material for use in living radical polymerization and without the need for strict polymerization conditions; and a radical polymerization initiating group-containing compound for use in the technique. The present invention relates to: a method for producing a polymer, the method including a polymerization step of mixing and warming (1) a radically polymerizable monomer, (2) an organic compound wherein at least one group that functions as a group for initiating polymerization of the monomer and that has a structure represented by formula 1 or formula 2 (X in the formula represents Cl or Br) is introduced in a molecule of the organic compound, and (3) an iodine-containing compound, thereby initiating, from the group having the structure, radical polymerization accompanied by a termination reaction; and the organic compound of (2) for use in the method.
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公开(公告)号：US20170166665A1
公开(公告)日：2017-06-15
申请号：US15313179
申请日：2014-06-25
发明人： Hiroyuki SHIMANAKA , Yoichi TAGI , Yoshikazu MURAKAMI , Shinichiro AOYAGI , Kazutaka ARAI , Sachio YOSHIKAWA
CPC分类号： C08F8/34 , C08F2/06 , C08F8/26 , C08F8/36 , C08F8/42 , C08F293/005 , C08L71/00 , C09B69/106 , C09B69/108 , C09B69/109 , C09C3/10 , C09D11/10 , C09D11/107 , C09D11/326 , C09D17/00 , C08L53/005
摘要： There is provided a resin-treated pigment that is useful as a coloring agent for color filters or inkjet inks, that can expand a hue range and improve performances such as color density, color developability, and transparency, and that is excellent in properties such as dispersibility and dispersion stability of pigments, re-dissolvability, and alkali-solubility. An A-B block copolymer 90% by mass or more of which is constituted by a methacrylate-based monomer or methacrylate-based monomers, in which the block A has a carboxy group-containing methacrylate as a constituent, and the block B has an ionic bond moiety represented by formula (1) as a constitutional unit, the ionic bond moiety containing a methacrylate, and an organic coloring matter having one or more sulfonate ions each being bonded thereto and each being a counter ion of a nitrogen cation of a quaternary ammonium salt.
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公开(公告)号：US20230348651A1
公开(公告)日：2023-11-02
申请号：US18006785
申请日：2021-08-12
发明人： Hiroyuki SHIMANAKA , Jun KAMABAYASHI , Akifumi TANAKA , Toshie OKUBO , Lu TIAN , Yoshikazu MURAKAMI , Sachio YOSHIKAWA
IPC分类号： C08F293/00 , C09D11/326 , B41M5/00 , C08F2/24
CPC分类号： C08F293/00 , C09D11/326 , B41M5/0064 , C08F2/24
摘要： The present invention provides an A-B block copolymer that enables preparation of a polymer emulsion useful as a binder component for an aqueous inkjet ink that is excellent in inkjet printability and is capable of forming a printed film excellent in durability, such as adhesiveness and rub resistance, on a substrate to be printed, such as a polyolefin-based plastic film. The block copolymer is an A-B block copolymer satisfying the following requirements (1-1) to (1-3). (1-1) Containing 90% by mass or more of a constituent unit derived from a methacrylate-based monomer or the like. (1-2) The chain A has a constituent unit (A-i) derived from methyl methacrylate or the like and a constituent unit (A-ii) derived from 2-ethylhexyl methacrylate or the like. (1-3) The chain B has a constituent unit (B) derived from methacrylic acid, a constituent unit (B-i) derived from methyl methacrylate or the like, and a constituent unit (B-ii) derived from 2-ethylhexyl methacrylate or the like.
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公开(公告)号：US20230212343A1
公开(公告)日：2023-07-06
申请号：US17999767
申请日：2021-07-02
IPC分类号： C08F290/14 , C01B32/174 , C01B32/194 , C09C1/56 , C09D11/037 , C09D11/52 , C08K7/06 , C09K23/46
CPC分类号： C08F290/142 , C01B32/174 , C01B32/194 , C09C1/56 , C09D11/037 , C09D11/52 , C08K7/06 , C09K23/46 , C01B2202/28 , C01B2202/22 , C01B2204/28 , C01B2204/22 , C01P2006/22 , C01P2006/40 , C08K2201/001
摘要： The present invention provides a carbon material dispersion in which a carbon material is contained at a high concentration in a liquid medium containing an organic solvent but is unlikely to reaggregate and is stably dispersed, and from which various products, such as an ink capable of forming a coating film having excellent electric conductivity, can be formed. This carbon material dispersion contains a carbon material, an organic solvent, and a polymeric dispersant, wherein the polymeric dispersant is a polymer having 3 to 55% by mass of a constituent unit (1) represented by the following formula (1), wherein R represents a hydrogen atom or the like, A represents O or NH, B represents an ethylene group or the like, R1 and R2 each independently represent a methyl group or the like, Ar represents a phenyl group or the like, X represents a chlorine atom or the like, and p represents an arbitrary number of repeating units, and the polymeric dispersant has an amine value of 100 mgKOH/g or less and a number average molecular weight of 5,000 to 20,000.
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10.发明申请公开(公告)号：US20190002619A1
公开(公告)日：2019-01-03
申请号：US16066972
申请日：2017-02-22
IPC分类号： C08F293/00 , C08F257/02 , C08F263/04 , C08F220/18 , C08F2/38 , C08F2/06 , C08K3/16 , C08K5/3417 , C08K5/20 , C08K5/101 , C08L101/00
摘要： The present invention provides: a novel production technique that enables production of a polymer whose molecular weight and molecular weight distribution are controlled and production of a polymer having a complicated structure in a desirably controlled manner using commercially available materials without using a radical polymerization initiator or a special material for use in living radical polymerization and without the need for strict polymerization conditions; and a radical polymerization initiating group-containing compound for use in the technique. The present invention relates to: a method for producing a polymer, the method including a polymerization step of mixing and warming (1) a radically polymerizable monomer, (2) an organic compound wherein at least one group that functions as a group for initiating polymerization of the monomer and that has a structure represented by formula 1 or formula 2 (X in the formula represents Cl or Br) is introduced in a molecule of the organic compound, and (3) an iodine-containing compound, thereby initiating, from the group having the structure, radical polymerization accompanied by a termination reaction; and the organic compound of (2) for use in the method.
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