发明公开

PICKLE FOR POLYAMIDE
摘要:
Process for pickling polyamide,



comprising the steps
a) contacting the polyamide with a pickling solution comprising

a mixture of at least two inorganic acids
MHF2, where M is an alkali ion or an ammonium ion
a monocarboxylic acid with 1 to 5 carbon atoms


b) contacting with an organic solvent having 1 to 10 carbon atoms, wherein
steps a) and b) take place consecutively or simultaneously.
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