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Application filed by Dimchev, KoshevafiledCriticalDimchev
Priority to BG9437791ApriorityCriticalpatent/BG51716A1/en
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This method finds application for chemical polishing of glass products, kitchenware in particular, and is used in the glass-making industry. It eliminates the use of toxic hydrofluoric acid. Polishing is carried out by dipping the products in a solution containing, in mass percent: 52-70 sulphuric acid, a double salt - ammonium hydrogen fluoride - ammonium fluoride, 2.5-5 fluorine ions and 25-45.0 water.
BG9437791A1991-05-091991-05-09Method for glass ware polishing
BG51716A1
(en)