| 摘要 |
PROBLEM TO BE SOLVED: To highly maintain the balance of developability to an aq. alkali developer and printing resistance by incorporating two specified diazo resins and the reaction product of isocyanates including a specified diisocyanate with alcohols including a specified diol. SOLUTION: The photosensitive compsn. contains a diazo resin in which counter anions are inorg. acid anions or <=3C aliphatic org. acid anions, a diazo resin in which counter anions are >=6C aliphatic or arom. org. acid anions and a polyurethane resin which is the reaction product of isocyanates including 40-90 mol.%, based on the total isocyanate components, diisocyanate represented by formula I with alcohols including 30-90 mol.%, based on the total alcohol components, diol represented by formula II. In the formula I, R1 -R4 may be the same or different and are each H, 1-4C alkyl, 1-6C alkoxy or halogen. In the formula II, R5 is H or 1-8C alkyl. |
