专利名称：CHEMICAL DISSOLVING SOLUTION
发明人：NAKAZATO TOSHIHIRO,IKETANI ITARU,IIDA SADAO,YAMAZAKI TOSHIHIKO茶杯犬好养吗
申请号：JP17598982
学业发展申请日：19821006
公开号：JPH0335381B2
国民素质公开日：师带徒师傅总结
数学符号读法
19910528师生互动
形容天气好的句子>亦舒语录专利内容由知识产权出版社提供
摘要：PURPOSE:To make the velocity of dissolution proper and to enable automatic dissolving operation, by adding a compound having a specified phenolic hydroxyl group to a soln. contg. prescribed amounts of hydrogen peroxide and hydrofluoride ions or dihydrofluoride ions to prepare a chemical dissolving soln. for iron and iron alloys. CONSTITUTION:A soln. contg. 1-350g/l hydrogen peroxide, >=1g/l hydrofluoride ions or dihydrofluoride ions from acidic ammonium fluoride or the like, and >=0.1g/l of at least 1 kind of compound having a phenolic hydroxyl group is ud as a chemical dissolving soln. for Fe, Fe-Ni and Fe-Ni-Co alloys. Said compound having a phenolic hydroxyl group is reprented by formula I (where X is H or -COOH), and phenolsulfonic acid, sulfosalicylic acid or the like is ud as the compound. The soln. is treated at 10-80 deg.C for 5c-
30min by an immersion method, a spraying method or a rotary barrel method. The velocity of dissolution of Fe and Fe alloys is incread to such a degree that automation is enabled, and the dissolving work efficiency is improved.
申请人：MITSUBISHI GAS CHEMICAL CO
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