US 11,656,551 B2
Water-developable photosensitive resin composition for flexographic printing and photosensitive resin original plate for flexographic printing obtained therefrom
Wataru Kawashima, Okayama (JP); and Jun Hasuike, Okayama (JP)
Assigned to TOYOBO CO., LTD., Osaka (JP)
Appl. No. 16/644,343
Filed by TOYOBO CO., LTD., Osaka (JP)
PCT Filed Aug. 31, 2018, PCT No. PCT/JP2018/032375
§ 371(c)(1), (2) Date Mar. 4, 2020,
PCT Pub. No. WO2019/049786, PCT Pub. Date Mar. 14, 2019.
Claims priority of application No. JP2017-170178 (JP), filed on Sep. 5, 2017.
Prior Publication US 2021/0063877 A1, Mar. 4, 2021
Int. Cl. G03F 7/037 (2006.01); B41N 1/12 (2006.01); C08G 69/14 (2006.01); G03F 7/11 (2006.01)
CPC G03F 7/037 (2013.01) [B41N 1/12 (2013.01); C08G 69/14 (2013.01); G03F 7/11 (2013.01)] 6 Claims
 
1. A water-developable photosensitive resin composition for flexographic printing, comprising 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, and
wherein the water-developable photosensitive resin composition does not contain rubber component.