| 摘要 |
PURPOSE:To obtain the titled composition which is capable of alkali-developing and has good forming property and is suitable to prepare a photosensitive planographic plate by incorporating a compd. having pivaloyl group in the titled composition contg. a photosensitive diazo resin and a binder. CONSTITUTION:The compd. having the pivaloyl group is incorporated in the titled composition contg. the photosensitive diazo resin and the binding agent. The compd. usable to the compd. having the pivaloyl group, comprises the compd. modified a compd. having a group (hydroxyl, amino or thiol group, etc.) capable of reacting with a pivalic acid derivative such as pivalic acid or pivalic acid chloride with the pivalic acid derivative, or a polymer contg. a monomer unit having the pivaloyl group, and is exemplified by P-hydroxy styrene, etc. Thus, the forming property of the titled composition is effectively improved by adding the compd. having the pivaloyl group to the titled composition.
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