| 摘要 |
PURPOSE:To obtain a photopolymerizable rubber composition which can give a cured product excellent in both of tensile strength and elongation and being flexible and solvent-insoluble, by mixing and reacting a specified photopolymerizable rubber with a photosensitizer and an addition-polymerizable monomer. CONSTITUTION:A rubber composition obtained by uniformly mixing 100pts.wt. composition based on a component of the formula with an auxiliary component comprising 1-10pts.wt. photosensitizer and 10-300pts.wt. addition-polymerizable monomer and reacting the mixture. In the formula, R is a 2-8C alkylene, R1 is H or CH3, R2 is a diisocyanate residue, R3 is a residue derived by removing the hydroxyl groups form a dihydric alcohol, X is a part derived by removing the hydroxyl group from a hydroxylated diene liquid rubber, l is 1-4, 1<m<4, and n=1-16. This photopolymerizable rubber composition can be used as a high-elasticity ink, a high-elasticity paint, flexographic plate material, or the like.
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