专利汇可以提供Composition of development processing agent专利检索,专利查询,专利分析的服务。并且PURPOSE: To maintain the effect of preventing the contamination of the development processing agent with silver by adding specific compds. to the part which does not substantially contain a dihydroxybenzene developing agent.
CONSTITUTION: Any of a thioctic acid compd., and the compds. formed by combining the compd. expressed by formula I, the compd. expressed by formula II and the compd. expressed by formula III or the combinations thereof are used as the agent for preventing the contamination with silver. These compds. are added to the part which does not substantially contain a dihydroxybenzene developing agent. In the formulas, B
1 , D
1 denote an aliphat. hydrocarbon group, etc.; A
2 , E
2 denote -COOM-, -SO
2 -OM, etc.; M denotes a univalent cation; (m), (n) denote 1 to 3; (p) denotes 1, 2; R denotes a phenyl group or lower alkyl group; R' denotes a phenyl group or lower alkyl group: M denotes a hydrogen atom or alkaline metal. The degradation in the performance to prevent the contamination with silver by the preservation of the development processing agent is prevented in this way.
COPYRIGHT: (C)1992,JPO&Japio,下面是Composition of development processing agent专利的具体信息内容。
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