SULFONATE ELECTROPLATING BATH, PROCESS FOR REFINING METAL BY ELECTROLYTIC DEPOSITING AND PROCESS FOR CONTROLLING METAL MORPHOLOGY IN ELECTROLYTIC REFINING
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United States of America Patent
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Issued Date -
Aug 29, 2024
app pub date -
May 12, 2022
filing date -
May 20, 2021
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Abstract
The present invention relates to an electroplating bath comprising (A) an alkane sulfonic acid or alkanol sulfonic acid; (B) a soluble metal salt of alkane sulfonic acid or alkanol sulfonic acid; and (C) at least one additive selected from—polyether derivatives of formula (I),—sulfonated or sulfated polyether derivatives of formula (II) or—any combinations thereof, wherein the groups in formulae (I) and (II) are as defined in the description and claims. The present invention also relates to a process for refining metal and a process for controlling morphology of metal deposited on cathode in electrolytic refining of the metal, which comprise using the electroplating bath according to the present invention.
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