MD940200A - Electrolytically regenerated solution for printed circuit boards etching - Google Patents

Electrolytically regenerated solution for printed circuit boards etching

Info

Publication number
MD940200A
MD940200A MD94-0200A MD940200A MD940200A MD 940200 A MD940200 A MD 940200A MD 940200 A MD940200 A MD 940200A MD 940200 A MD940200 A MD 940200A
Authority
MD
Moldova
Prior art keywords
etching
printed circuit
circuit boards
regenerated solution
vanadium
Prior art date
Application number
MD94-0200A
Other languages
Romanian (ro)
Russian (ru)
Inventor
Lindinger Bernd
Original Assignee
Elo-Chem Atztechnik Gmbh
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
Priority claimed from AT0143390A external-priority patent/AT395177B/en
Application filed by Elo-Chem Atztechnik Gmbh filed Critical Elo-Chem Atztechnik Gmbh
Publication of MD940200A publication Critical patent/MD940200A/en

Links

Landscapes

  • Manufacturing Of Printed Circuit Boards (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

It is proposed an electrolytically regenerated solution for printed circuit boards and shaped parts of copper and copper alloys with the copper tetraminesulphate content, as well as ammonia, ammonium sulphate, ammonium chloride, if appropriate ammonium nitrate as well as increasing the catalyst etching speed.According to the invention such composition for etching is characterized by the content of vanadium or vanadium compound as a catalyst, in an amount of 1 mg to 99 mg/l of etching solution recalculated for vanadium.
MD94-0200A 1990-07-05 1994-07-12 Electrolytically regenerated solution for printed circuit boards etching MD940200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0143390A AT395177B (en) 1990-07-05 1990-07-05 RESOLUTION

Publications (1)

Publication Number Publication Date
MD940200A true MD940200A (en) 1996-01-31

Family

ID=62142642

Family Applications (1)

Application Number Title Priority Date Filing Date
MD94-0200A MD940200A (en) 1990-07-05 1994-07-12 Electrolytically regenerated solution for printed circuit boards etching

Country Status (1)

Country Link
MD (1) MD940200A (en)

Similar Documents

Publication Publication Date Title
MY101567A (en) Low toxicity corrosion resistant solder.
ES438408A1 (en) Bath and process for the electrolytic separation of rare metal alloys
JPS5350246A (en) Rubber composition having good adhesion to metal
KR960705078A (en) Copper etchant solution additives
GR81882B (en)
HUT64109A (en) Electrolytically regenerable etching solutioin for etching copper and copper alloys
MD940200A (en) Electrolytically regenerated solution for printed circuit boards etching
CA2108702A1 (en) Methods and Compositions for Reducing Precipitation from Acid Solutions
ES8700334A1 (en) Triazolopyrimidine extractants
IT8567384A1 (en) Dental alloy with low content of noble metals.
CA2336016A1 (en) Treatment of an aluminium alloy melt
ES8601323A1 (en) Process for the manufacture of ferrosilicon or silicon alloys containing strontium
TW361059B (en) Peeling liquid for tin and tin alloy
CA2070856A1 (en) Process for the purification of an aqueous solution of an alcaline metal chloride by the removal of ammonium nd iodide
JPS5738313A (en) Purifying method for phosphoric acid solution
EP0111921A3 (en) Nonconsumable electrode assembly
JPS55100951A (en) Soldering alloy comprising aluminum and aluminum alloy
EP0248358A3 (en) Process to reduce the amount of copper salt in oxamide
KR910003127A (en) How lead gold removes thallium from now
KONSTANTOUROS et al. Aqueous ammoniacal etching solution for etching copper and copper alloys(galvanized printed wiring boards)
JPS52143998A (en) Production of iron chloride solution
Yang et al. Effects of Trace Elements on the Limiting Temperature for G--P Zone Formation in Aluminum--Zinc--Magnesium Alloys
KR860004168A (en) Method for producing electrolytic metal manganese from Fero manganese slacks
KR970070237A (en) Copper alloys and palladium-tin alloy plating compositions and plating methods of iron-nickel alloys
JPS6452083A (en) Electroless gold plating solution