| 摘要 |
Disclosed is a novel photosensitive composition comprising an alkali-soluble photosensitive resin and an additive consisting of at least one aromatic polybasic carboxylic cellulose ether ester which is a reaction product of an aromatic polybasic carboxylic anhydride with a cellulose ether compound of the formula (I) or (II): Ra1Rb2A(I) or Rc3Rd4Re5A(II) wherein R1 represents a hydroxyalkyl radical having 3 or 4 carbon atoms; R2 and R5 are a hydrogen atom or an alkyl radical having 1 or 2 carbon atoms, respectively; R3 and R4 represent a hydroxyalkyl radical having 2 to 4 carbon atoms, respectively, and are different from each other; A represents a cellulose residue, and; a, b, c, d and e, respectively, represent a positive number. By using the novel photosensitive composition, the resultant coating solution is increased in its viscosity to a proper level for providing a uniform photosensitive coating film, and the resultant coating film can be provided with a high surface tenacity and resistances to scratch formation and etching solution.
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