• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Ink for flexographic printing. It includes: - between 1% and 40% by weight of the total pigments, - between 11.5% and 39% by weight of the total of acrylic resins, - between 32% and 52% by weight of the total water, - between 0,01% and 0,025% in weight of the total of biocides, - between 0.5% and 10% by weight of the total surfactant, and - between 0.1% and 1% by weight of the total antifoam. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2679697A1
    申请号:ES201730191
    申请日:2017-02-16
    公开日:2018-08-30
    发明作者:Benjamín MORENO RAMÍREZ；Emilio FERNÁNDEZ GARCÍA；Armand MARCÉ TORRA
    申请人:Kao Corp；
    IPC主号:
    专利说明:

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    Ink for flexographic printing.
    Ink for flexographic printing comprising: between 1% and 40% by weight of the total pigments, between 11.5% and 39% by weight of the total acrylic resins, between 32% and 52% by weight of the total water, between 0.01% and 0.025% by weight of the total biocides, between 0.5% and 10% by weight of the total surfactant, and between 0.1% and 1% by weight of the total defoamer.
    BACKGROUND OF THE INVENTION
    Different patents are known in the state of the art that refer to inks for water-based flexographic printing.
    Thus, European Patent No. 0754729 (ES2136350), "WATER BASED PRINTING INK", is known in the name of Sun Chemical Corporation, 1996, in the public domain, which refers to an oxidizing ink for printing, of aqueous base comprising: (a) a resin; (b) an organic and / or inorganic pigment; (c) a dryer; and (d) a cyclodextrin.
    European Patent No. 0543385 (ES2067997) "WATER BASED PRINTING INK" is also known, in the name of Uta Melzer, from 1992, which refers to a water based printing ink, which is especially suitable inks of gold and silver, it has the following composition: 1 to 60 parts of its weight of a methacrylic acid styrene copolymer, and / or ester of aqueous dispersions, 1 to 40 parts of its weight of a vinyl propionate styrene copolymer / vinyl pyrrolidone and / or c1 rilate ester, as a neutralizable, water soluble solid resin, 0 to 60 parts of its weight of glycols or alcohols or of glycoleter / ether, 0.1 to 30 parts of its weight of crosslinking agents, 0 , 1 to 30 parts of its weight of neutralizing agents, 0.1 to 30 parts of its weight of natural and / or synthetic waxes, 0.001 to 2 parts of its weight of defoamer, 0 to 80 parts of its weight of water, 1 to 60 parts of its weight of aluminum, mica and / or golden bronze pigments. the ink is suitable for printing on paper, cardboard, cardboard and the like, for example with the inking mechanism of a sheet printing machine or continuous offset printing, with wetting mechanisms, separate inking groups of sheet printing machines or Continuous offset printing, sheet inking machines,
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    rotogravure printers, phlebography printers. The ink can be used in a single printing sequence, without subsequent inks.
    BRIEF DESCRIPTION OF THE INVENTION
    The present invention is part of the sector of inks for flexographic printing, specifically that use water in its formulation.
    The closest document is European Patent No. 0754729 (ES2136350).
    It is described for water-based flexographic printing ink.
    This patent solves the problem of getting an ink for flexographic printing, which dries quickly and at the same time does not destabilize the ink.
    The problem with this patent is that it uses ester-epoxy resins in its formulation, which means that the ink will be more expensive and more complex when working.
    The present invention improves the closest document with a formulation in which it comprises among other differences the use of an acrylic resin.
    The use of acrylic resin means a clear reduction in costs and greater ease of handling.
    At the same time, the combination with the rest of the components makes it possible not to need a dryer as in the closest document, only the drying by evaporation of the water being necessary.
    An object of the present invention is an ink for flexographic printing characterized in that it comprises: between 1% and 40% by weight of the total pigments, between 11.5% and 39% by weight of the total acrylic resins, between 32% and 52% by weight of the total water, between 0.01% and 0.025% by weight of the total biocides, between 0.5% and 10% by weight of the total surfactant, and between 0.1% and 1% by weight of the total defoamer.
    CONCRETE REALIZATION OF THIS INVENTION
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    In advance, it should be noted that the% are by weight and over the total both in the description and in the claims.
    Thus, in a specific embodiment, the ink for flexographic printing comprises in its formulation between 1% and 40% by weight of the total pigments, which are what define the color of the ink.
    It also comprises between 11.5% and 39% by weight of the total acrylic resins, which lowers costs in relation to the closest document and facilitates its handling. Also, one of the advantages of using acrylic resins is that water can be used as a solvent, with water being an ecological solvent that is environmentally friendly.
    It comprises water, since it is an aqueous ink, between 32% and 52% by weight of the total, as a solvent.
    Finally, in small quantities it includes:
    - biocides, between 0.01% and 0.025% by weight of the total, which prevent the proliferation of microorganisms in the ink,
    - surfactants between 0.5% and 10% by weight of the total, to facilitate the wetting of the pigment and the support to be printed.
    - between 0.1% and 1% by weight of the total defoamer, which prevent the formation of bubbles or foam in the ink.
    Additionally polyurethane resins can be added between 1% and 15% by weight of the total to increase the internal cohesion of the ink film.
    Optionally it can comprise between 1% and 8% by weight of the total organic solvents to adjust the drying of the ink at the printing speed.
    Finally, the possibility of using polyethylene wax between 0.1% and 3% by weight of the total to reduce the sliding coefficients has been foreseen.
    A series of examples of ink formulation are indicated below:
    EXAMPLE 1
     GREEN COLOR INK  %
     Acrylic resin  29.8
     Water  50.83
     Surfactant  0.8
     Pigment  18.2
     Anti foaming  0.355
     Biocide  0.015
    100
    5 EXAMPLE 2
     COLOR INK CREAM  %
     Acrylic resin  17.5
     Polyurethane resin  13
     Water  43.5
     Surfactant  0.5
     Pigment  25,082
     Anti foaming  0.4
     Biocide  0.018
    100
    EXAMPLE 3
     BLACK COLOR INK  %
     Acrylic resin  30.1
     Water  48.38
     Surfactant  1.2
     Pigment  14.35
     Anti foaming  0.55
     Organic solvents  5.4
     Biocide  0
    EXAMPLE 4
     CLEAR BLUE COLOR INK  %
     Acrylic resin  38.1
     Water  54,988
     Surfactant  2.1
     Pigment  3.9
     Anti foaming  0.1
     Polyethylene wax  0.8
     Biocide  0.012
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    The% refer are by weight with respect to the total.
    5 The present invention patent describes a new ink for flexographic printing. The examples mentioned herein are not limiting of the present invention, therefore it may have different applications and / or adaptations, all of them within the scope of the following claims.
    权利要求:
    Claims (3)
    [1]
    1. Ink for flexographic printing characterized in that it comprises:
    5 - between 1% and 40% by weight of the total pigments,
    - between 11.5% and 39% by weight of the total acrylic resins,
    - between 32% and 52% by weight of the total water,
    - between 0.01% and 0.025% by weight of total biocides,
    - between 0.5% and 10% by weight of the total surfactant, and
    10 - between 0.1% and 1% by weight of the total defoamer.
    [2]
    2. Ink according to claim 1, characterized in that it comprises between 1% and 15% by weight of the total polyurethane resins.
    3. Ink, according to claim 1, characterized in that it comprises between 1%
    and 8% by weight of the total organic solvents.
    [4]
    4. Ink according to claim 1, characterized in that it comprises between 0.1% and 3% by weight of the total polyethylene wax.
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    同族专利:
    公开号 | 公开日
    EP3583171A1|2019-12-25|
    ES2679697B1|2019-06-21|
    WO2018149990A1|2018-08-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    KR20060068523A|2004-12-16|2006-06-21|한국조폐공사|Composition of high-speed type water-base printing ink|
    CN101812257A|2009-02-24|2010-08-25|东莞市英科水墨有限公司|Flexographic food packaging ink and preparation method thereof|
    CN102617771A|2012-03-26|2012-08-01|田立壮|Aqueous printing ink binding agent and ink as well as preparation methods thereof|
    US5098478A|1990-12-07|1992-03-24|Sun Chemical Corporation|Water-based ink compositions|
    DE4138073A1|1991-11-19|1993-05-27|Dyes Joachim Lackfab Gmbh|PRINTING LACQUERED ON WATER BASIS|
    US5567747A|1995-07-18|1996-10-22|Sun Chemical Corporation|Water-based printing ink|
    US5972088A|1996-03-13|1999-10-26|Sun Chemical Corporation|Water-based gravure printing ink|
    US9617409B2|2010-12-13|2017-04-11|Sun Chemical Corporation|Methods of solubilizing milling media in pigment particle dispersions|
    WO2016202654A1|2015-06-18|2016-12-22|Basf Se|Water-based printing ink comprising an aqueous dispersed polyurethane binder and an aqueous dispersed polyacrylate binder|
    法律状态:
    2018-04-03| PC2A| Transfer of patent|Owner name: KAO CORPORATION Effective date: 20180326 |
    2018-08-30| BA2A| Patent application published|Ref document number: 2679697 Country of ref document: ES Kind code of ref document: A1 Effective date: 20180830 |
    2019-06-21| FG2A| Definitive protection|Ref document number: 2679697 Country of ref document: ES Kind code of ref document: B1 Effective date: 20190621 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201730191A|ES2679697B1|2017-02-16|2017-02-16|Ink for flexographic printing|ES201730191A| ES2679697B1|2017-02-16|2017-02-16|Ink for flexographic printing|
    PCT/EP2018/053933| WO2018149990A1|2017-02-16|2018-02-16|Flexographic printing ink|
    EP18706702.0A| EP3583171A1|2017-02-16|2018-02-16|Flexographic printing ink|
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