Stable high ph developer

作者: Celin Savariar-Hauck , Manuel Klamt , Jianbing Huang

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摘要: Developer composition obtainable by (a) providing water, (b) dissolving such an amount of alkaline component selected from alkali silicates, hydroxides, Na3PO4, K3PO4, NR4OH, wherein each R is independently C1­C4 alkyl groups and C1-C4 hydroxyalkyl groups, mixtures thereof in the water provided step that a pH more than 12 obtained, (c) stabilizer M2CO3, MHCO3, or mixture 2 thereof, M Li, Na, K NR'4 R' represents H alkyl, solution obtained added carbonate anion 1.5 to 20 wt-%, based on total weight developer composition.

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