RU94035366A - Photopolymerizing composition to manufacture elastic photopolymeric printing plates - Google Patents

Abstract

FIELD: flexography. SUBSTANCE: proposed photopolymeric composition has per cent by mass: isopren-styrene block-copolymer including 20% of styrene blocks (molecular mass 12000) 15.05-19.21; dimethyl ester of ethyleneglycol 1.85-5.55; butylacrylate 3.0-8.55; 2.2-aso-bis-isobutironytril 0.03-0.082; 2.6-di-tret. octil-4-methylphenol 0.003-0.01; dodecylsulphide 0.003-0.008; methylene chloride being the balance. EFFECT: manufacture of high-quality photopolymeric printing plates with sufficient depth of photochemical cross- linking, diminished swelling degree in organic solvents (9.5-10.8 as compared with 17.8 of other compositions), reduced time of exposure. 2 tbl

Claims (1)

The invention relates to chemical-photographic photoresist molding materials, in particular to photopolymerizable FPK compositions for the manufacture of flexible printing plates for flexographic printing in printing. FPK for increasing the depth of photochemical crosslinking of photopolymer PPF forms, decreasing the degree of their swelling in organic solvents and reducing the exposure time contains, wt.%: Isoprene-styrene block copolymer, including 20% styrene blocks (mol.m 12000) 15.05 - 19 , 21; ethylene glycol dimethyl ether 1.85-5.55; butyl acrylate 3.0-8.55; 2,2-azo-bis-isobutyronitrile 0.03 - 0.082; 2,6-di-tert. Octyl-4-methylphenol 0.003 - 0.1; dodocyl sulfide 0.003-0.008; methylene chloride the rest. This FPK allows one to obtain high-quality FPF with a sufficient depth of photochemical crosslinking, with a reduced degree of swelling in organic solvents, and also to reduce the exposure time.