Invention Grant
- Patent Title: Photosensitive resin composition for CTP flexographic printing original plate and printing original plate prepared therefrom
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Application No.: US14375518Application Date: 2013-03-22
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Publication No.: US09709888B2Publication Date: 2017-07-18
- Inventor: Hiroto Yamada , Yukimi Yawata , Kazuya Yoshimoto
- Applicant: TOYOBO CO., LTD.
- Applicant Address: JP Osaka
- Assignee: TOYOBO CO., LTD.
- Current Assignee: TOYOBO CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2012-080265 20120330; JP2013-016562 20130131
- International Application: PCT/JP2013/058284 WO 20130322
- International Announcement: WO2013/146586 WO 20131003
- Main IPC: G03F7/00
- IPC: G03F7/00 ; G03F7/033 ; G03F7/027 ; B41N1/12 ; G03F7/24

Abstract:
A photosensitive resin composition for CTP flexographic printing original plate containing at least a hydrophobic polymer obtained from water-dispersible latex (A), a hydrophilic polymer (B), a photopolymerizable unsaturated compound (C), a photopolymerization initiator (D), and if necessary, rubber (E), characterized in that, the photopolymerizable unsaturated compound (C) comprises a photopolymerizable oligomer containing no hydroxyl group (C-1), a hydroxyl group-containing photopolymerizable monomer having a pentaerythritol skeleton, a dipentaerythritol skeleton or a glycerol skeleton (C-2) and, optionally, a photopolymerizable monomer containing no hydroxyl group (C-3). The content of the hydroxyl group-containing photopolymerizable monomer (C-2) is 1 to 20% by mass of the photosensitive resin composition. The content of the rubber (E) is preferably 0.5 to 15% by mass of the photosensitive resin composition.
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