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公开(公告)号：US11975556B2
公开(公告)日：2024-05-07
申请号：US17278872
申请日：2019-09-17
Applicant: TOYOBO CO., LTD.
Inventor： Kazuya Yoshimoto , Jun Hasuike
CPC classification number: B41N1/12 , G03F7/033 , G03F7/0757 , G03F7/095
Abstract: The present invention aims to provide a flexographic printing original plate which exhibits improved sustainability of the ability of preventing the plate surface from staining. According to the present invention, there is provided a water-developable flexographic printing original plate including at least a support and a photosensitive resin layer provided on the support, in which the photosensitive resin layer contains a water-dispersible latex, a photopolymerizable unsaturated compound, a photopolymerization initiator, and a silicone compound. When the water-dispersible latex is one or more latex rubbers selected from the group consisting of polybutadiene rubber and poly(nitrile-butadiene) rubber, the silicone compound is a silicone compound having an amino group in the molecule and has a refractive index of 1.44 to 1.60. When the water-dispersible latex is poly(styrene-butadiene) rubber, the silicone compound is a silicone compound having an amino group in the molecule and has a refractive index of 1.47 to 1.63.
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Patent Agency Ranking
2.发明申请公开(公告)号：US20180236804A1
公开(公告)日：2018-08-23
申请号：US15754398
申请日：2016-08-02
Applicant: TOYOBO CO., LTD.
Inventor： Kazuya Yoshimoto , Atsushi Tatsuyama , Jun Hasuike
Abstract: The present invention provides a photosensitive resin composition for a relief printing original plate which can achieve both of a printing reproducibility of gradation of a highlight part and a printing durability, and can further achieve a low plate surface tackiness. A photosensitive resin composition for a relief printing original plate containing water-soluble or water-dispersible polyamide, a photopolymerizable unsaturated compound and a photopolymerization initiator as essential ingredients, characterized in that a total of a content of an alicyclic structural unit obtained from diamine and a content of an alicyclic structural unit obtained from dicarboxylic acid in the polyamide is 30 to 90 molar %, and the content of the alicyclic structural unit obtained from dicarboxylic acid in the polyamide is 20 molar % or more.
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公开(公告)号：US20210063877A1
公开(公告)日：2021-03-04
申请号：US16644343
申请日：2018-08-31
Applicant: TOYOBO CO., LTD.
Inventor： Wataru Kawashima , Jun Hasuike
Abstract: A photosensitive resin composition for a flexographic printing original plate is disclosed which exhibits reduced adhesion of dust, dirt, and paper powder, resistance to UV ink and allows storage of the printing original plate for a long period of time. A water-developable photosensitive resin composition for flexographic printing, contains at least a polyamide and/or a polyamide block copolymer (a), a cross-linking agent having one or more unsaturated group(s) (b), a photo-polymerization initiator (c), and a fatty acid ester (d), wherein the fatty acid ester (d) has two or more hydroxyl groups and 24 or 25 carbon atoms in a molecule, wherein the fatty acid ester (d) is a fatty acid ester of a compound selected from fatty acids having a number of carbon atoms of 12 to 22, and wherein a content of the fatty acid ester (d) in the photosensitive resin composition is 0.2 to 6% by weight.
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公开(公告)号：US10807400B2
公开(公告)日：2020-10-20
申请号：US15754398
申请日：2016-08-02
Applicant: TOYOBO CO., LTD.
Inventor： Kazuya Yoshimoto , Atsushi Tatsuyama , Jun Hasuike
Abstract: The present invention provides a photosensitive resin composition for a relief printing original plate which can achieve both of a printing reproducibility of gradation of a highlight part and a printing durability, and can further achieve a low plate surface tackiness. A photosensitive resin composition for a relief printing original plate containing water-soluble or water-dispersible polyamide, a photopolymerizable unsaturated compound and a photopolymerization initiator as essential ingredients, characterized in that a total of a content of an alicyclic structural unit obtained from diamine and a content of an alicyclic structural unit obtained from dicarboxylic acid in the polyamide is 30 to 90 molar %, and the content of the alicyclic structural unit obtained from dicarboxylic acid in the polyamide is 20 molar % or more.
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公开(公告)号：US11656551B2
公开(公告)日：2023-05-23
申请号：US16644343
申请日：2018-08-31
Applicant: TOYOBO CO., LTD.
Inventor： Wataru Kawashima , Jun Hasuike
Abstract: A photosensitive resin composition for a flexographic printing original plate is disclosed which exhibits reduced adhesion of dust, dirt, and paper powder, resistance to UV ink and allows storage of the printing original plate for a long period of time. A water-developable photosensitive resin composition for flexographic printing, contains at least a polyamide and/or a polyamide block copolymer (a), a cross-linking agent having one or more unsaturated group(s) (b), a photo-polymerization initiator (c), and a fatty acid ester (d), wherein the fatty acid ester (d) has two or more hydroxyl groups and 24 or 25 carbon atoms in a molecule, wherein the fatty acid ester (d) is a fatty acid ester of a compound selected from fatty acids having a number of carbon atoms of 12 to 22, and wherein a content of the fatty acid ester (d) in the photosensitive resin composition is 0.2 to 6% by weight.
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公开(公告)号：US20210191267A1
公开(公告)日：2021-06-24
申请号：US16078852
申请日：2017-02-16
Applicant: TOYOBO CO., LTD.
Inventor： Wataru Kawashima , Jun Hasuike
Abstract: A high-quality photosensitive resin composition is disclosed which not only exhibits a reduced adhesion of dust, dirt, and paper powder to a relief and a good resistance to a UV ink but also allows a storage of a printing original plate for a long period of time, even if this plate is a plate in a low hardness to be used for a flexographic printing. A water-developable photosensitive resin composition for flexographic printing contains at least a polyamide and/or a polyamide block copolymer (a), a cross-linking agent having one or more unsaturated group(s) (b), a photo-polymerization initiator (c), and a fatty acid ester (d), wherein the fatty acid ester (d) has two or more hydroxyl groups and 11 to 23 carbon atoms in a molecule, and wherein a content of the fatty acid ester (d) in the photosensitive resin composition is 0.2 to 6% by weight.
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