公开(公告)号：EP4206250A1

公开(公告)日：2023-07-05

申请号：EP21861253.9

申请日：2021-08-12

申请人： DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.

发明人： SHIMANAKA, Hiroyuki ,  KAMABAYASHI, Jun ,  TANAKA, Akifumi ,  OKUBO, Toshie ,  TIAN, Lu ,  MURAKAMI, Yoshikazu ,  YOSHIKAWA, Sachio

IPC分类号： C08F293/00 ,  B41J2/01 ,  C09D11/322 ,  B41M5/00

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.

公开(公告)号：EP4414429A1

公开(公告)日：2024-08-14

申请号：EP22878183.7

申请日：2022-08-04

申请人： DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.

发明人： DOI, Seiji ,  ONIDUKA, Hiroya ,  HASHIMOTO, Risa ,  UMEDA, Daichi ,  SHIMANAKA, Hiroyuki ,  KAMABAYASHI, Jun

IPC分类号： C09C1/44 ,  C09D17/00 ,  C08F220/06 ,  C08L55/00 ,  C08L101/00 ,  C09D133/00 ,  C09D201/00 ,  C09K3/16 ,  C09D11/10 ,  C01B32/174 ,  C08K3/04 ,  C09K23/52

CPC分类号： Y02E60/50 ,  C09C1/44 ,  C01B32/174 ,  C09K23/52 ,  C09D201/00 ,  C09D17/00 ,  C08L1/08 ,  C09C1/48 ,  C08K3/04 ,  C08L101/00 ,  C09D11/10 ,  C08F290/06 ,  C09D133/24 ,  C09K3/16 ,  C09D7/61 ,  C08F220/06 ,  C08L55/00 ,  C09D133/00

摘要： There is provided a carbon material dispersion in which a carbon material containing a carbon nanotube is dispersed favorably without substantially producing a coarse aggregate irrespective of liquid compositions and dispersion methods, the carbon material dispersion excellent in viscosity stability. The carbon material dispersion excluding one that contains a volatile salt contains: a carbon material containing a carbon nanotube; a liquid medium; and a dispersant. The content of the dispersant in terms of solid content based on 100 parts by mass of the carbon material is 204 parts by mass or less, and when a dilute dispersion is obtained by diluting the carbon material dispersion with a diluent comprising the liquid medium such that absorbance at a wavelength WM, which is a median value of an arbitrary wavelength WL within a range of 350 to 550 nm and an arbitrary wavelength WH within a range of 650 to 850 nm, is 1.8±0.02, a ratio of absorbance AL at the wavelength WL to absorbance AH at the wavelength WH, (AL/AH), is 1.60 or more for the dilute dispersion.

公开(公告)号：EP4209559A1

公开(公告)日：2023-07-12

申请号：EP21864075.3

申请日：2021-08-12

申请人： DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.

发明人： SHIMANAKA, Hiroyuki ,  MURAKAMI, Yoshikazu ,  KAMABAYASHI, Jun ,  FUJITA, Toshiyasu ,  ARAI, Kazutaka ,  YOSHIKAWA, Sachio

IPC分类号： C09D17/00 ,  B41J2/01 ,  C09D11/326 ,  C09D11/38 ,  B41M5/00 ,  C09B67/20 ,  C09B67/46

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, R 1 represents CH 2 CH 2 or CH 2 CH 2 OCH 2 CH 2 , 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.