Copper plating brightener

Abstract

The invention relates to a copper plating brightener. The copper plating brightener mainly comprises copper sulfate, zinc sulfate, sulfuric acid, saccharin, citric acid, 2.4-2N methyl-pyridine, lead acetate and the like. The copper plating brightener has the characteristics of high brightness, high smoothness, high uniform plating capability, stable plating solution structure, high coating binding force, less using amount of the brightener and the like.

Description

technical field [0001] The invention relates to a brightener for copper plating, which belongs to the field of electrochemical surface protection. Background technique [0002] The acidic sulfate copper plating process is widely used because of its simple basic composition, stable solution, high current efficiency, high brightness, high flatness, and high uniformity of the coating can be obtained by adding an appropriate brightener. [0003] The key to the quality of the acidic copper plating layer lies in the selection of copper plating optical agents. Therefore, for decades, a lot of research and improvement have been carried out on copper plating brighteners. In the 1970s, my country successfully developed polydisulfide Combination brighteners such as sodium dipropylsulfonate as the main component, but in use, such combination brighteners are difficult to control, and the light output speed is slow, etc., and foreign countries have introduced a variety of new copper acid b...

AI Technical Summary

Problems solved by technology

[0003] The key to the quality of the acidic copper plating layer lies in the selection of copper plating optical agents. Therefore, for decades, a lot of research and improvement have been carried out on copper plating brighteners. In the 1970s, my country successfully developed polydisulfide Combination brighteners such as sodium dipropylsulfonate as the main component, but in use, such combination brighteners are difficult to control, and the light output speed is slow, etc., and foreign countries have introduced a variety of new copper acid brighteners. Components, especially the introduction of dyes with excellent performance, make the acid copper plating liquid exhibit excellent comprehensive performance, but the price of the acid copper brightener introduced from abroad is high, and domestic enterprises cannot afford it. Therefore, it is necessary to develop a product that can compete with foreign countries A new generation of brighteners for copper plating comparable to brighteners for copper plating