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US5043099A Mono- and di-substituted (diphosphonoalkylamino methyl)-4-hydroxybenzenesulfonic acid 失效
单 - 和二 - 取代(二膦酰基烷基氨基甲基)-4-羟基苯磺酸

Mono- and di-substituted (diphosphonoalkylamino
methyl)-4-hydroxybenzenesulfonic acid
摘要:
New polyamino-polyphosphonic-hydroxybenzenesulfonic acid compounds as the free acid or their alkali or alkaline earth metal salt. Specifically, the compounds are the mono- and di-(1,1-diphosphono-1-alkylaminomethyl)-4-hydroxybenzenesulfonic acid. These compounds are useful as corrosion inhibiting agents for metal/water applications.
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