| 摘要 |
PURPOSE:To increase the developing stability without lowering the developing power and solve problems about the treatment of waste liquor by using an aqueous alkali soln. contg. a water soluble amphoteric polyelectrolyte as a developing soln. for an o-quinone diazide photosensitive material. CONSTITUTION:An amphoteric polyelectrolyte contg. an anionic group selected from COOH and SO3H, tertiary amine, quat, ammonium salt, cyclic amine and cyclic quat. ammonium salt is used as a developer for an o-quinone diazide photosensitive material. The polyelectrolyte includes a copolymer of monomers selected from a monomer having an anionic group such as styrene sulfonate or (meth) acrylate, a monomer having a cationic group and obtd. by the reaction of vinylpyridine, diallylamine and a quaternizing agent, and other monomers. The polyelectrolyte is added to an aqueous soln. of sodium silicate, NaOH, sodium tertiary phosphate or other alkali to prepare a developing soln. This soln. has high developing power and high stability in image reproduction even in long-time development at high temp. In addition, problems about the treatment of waste liquor such as the production of much silicic acid gel are solved. |
