PHOTOPOLYMERIZATION FORMULATION FOR MANUFACTURING ELASTIC PHOTOPOLYMER TYPE FORMS Russian patent published in 1997 - IPC

FIELD: typography and type forms. SUBSTANCE: to increase replication capacity of forms by way of raising light sensitizing and photochemical linking of photopolymerization material, formulation is supplemented with new initiator β-diisopropoxyacetophenone, as dye, rhodamine 6G and, as acrylate monomer, 1,4-butanediol diacrylate being applied. The thus prepared formulation contains, wt.-%: isoprene-styrene block copolymer with molecular weight (150-200) x 10³ containing 15-20% of bound styrene in the form of polystyrene blocks with molecular weight (12-20) x 10³, 15.45-63.98; ethylene glycol dimethyl ether, 5.53- 25.59; 1,4-butanediol diacrylate, 0.62-23.88; β- diisopropoxyacetophenone, 0.37-1.79; 2,6-di-tert-butyl-4- methylphenol, 0.031-0.239; rhodamine 6G, 0.0018-0.064; solvent, 2.38- 77.24. EFFECT: increased replication capacity of type form. 1 tbl