HUT55325A - Process for regenerating basic or acidic etching materials - Google Patents

Process for regenerating basic or acidic etching materials

Info

Publication number
HUT55325A
HUT55325A HU567487A HU567487A HUT55325A HU T55325 A HUT55325 A HU T55325A HU 567487 A HU567487 A HU 567487A HU 567487 A HU567487 A HU 567487A HU T55325 A HUT55325 A HU T55325A
Authority
HU
Hungary
Prior art keywords
pref
acidic etching
acid
etching materials
etching agents
Prior art date
Application number
HU567487A
Other languages
Hungarian (hu)
Other versions
HU205041B (en
Inventor
Kalman Tihanyi
Imre Molnar
Original Assignee
Kalman Tihanyi
Imre Molnar
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kalman Tihanyi, Imre Molnar filed Critical Kalman Tihanyi
Priority to HU567487A priority Critical patent/HU205041B/en
Publication of HUT55325A publication Critical patent/HUT55325A/en
Publication of HU205041B publication Critical patent/HU205041B/en

Links

Abstract

Regeneration of copper contaminated acid or alkaline etching agents: a) pH of acid etching agents is set to 3.5-4.5 and ammonium ions pref. ammonium-hydroxide is added; b) pH of alkaline etchants is set to 3.5-4.5 with chloride ions, pref. hydrochloric-acid. PPtd. copper salts are isolated in both cases, pref. by filtration. The pH of the etching agents is set to sepd. values and the etchants are recirculated e
HU567487A 1987-12-15 1987-12-15 Process for regenerating copper-containing etching agents of acidic or alkaline reaction HU205041B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HU567487A HU205041B (en) 1987-12-15 1987-12-15 Process for regenerating copper-containing etching agents of acidic or alkaline reaction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU567487A HU205041B (en) 1987-12-15 1987-12-15 Process for regenerating copper-containing etching agents of acidic or alkaline reaction

Publications (2)

Publication Number Publication Date
HUT55325A true HUT55325A (en) 1991-05-28
HU205041B HU205041B (en) 1992-03-30

Family

ID=10970575

Family Applications (1)

Application Number Title Priority Date Filing Date
HU567487A HU205041B (en) 1987-12-15 1987-12-15 Process for regenerating copper-containing etching agents of acidic or alkaline reaction

Country Status (1)

Country Link
HU (1) HU205041B (en)

Also Published As

Publication number Publication date
HU205041B (en) 1992-03-30

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Legal Events

Date Code Title Description
HMM4 Cancellation of final prot. due to non-payment of fee