Preparation method and application of ammonium thiocarbonate sulfonate inner salt

By preparing the thiocarbonate ammonium sulfonate internal salt as a new high antigen, the problem of unstable copper foil production caused by the easy decomposition of the existing SH110 is solved, and the tensile performance of the copper foil is significantly improved and the process is simple and safe.

CN119176769BActive Publication Date: 2025-03-28JIANGXI HUAXIN MATERIALS CO LTD
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Patent Information

Application Number
CN202411688807.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-03-28
Estimated Expiration
2044-11-25

AI Technical Summary

Technical Problem

The high antigen SH110 used in the production of existing electrolytic copper foils is easy to decompose, resulting in unstable copper foil production process and difficult to find alternatives.

Method used

By preparing the inner salt of thiocarbonate ammonium sulfonate as a new high antigen, it can significantly improve the tensile strength and stability of the copper foil. The preparation method of the thiocarbonate ammonium sulfonate internal salt includes reacting raw material A and B in a solvent, adding a catalyst to undergo a timing reaction, and finally obtaining a high yield and high purity product by cooling and crystallization.

Benefits of technology

It realizes the efficient preparation of thiocarbonate ammonium sulfonate internal salt, improves the tensile and fatigue resistance of copper foil, and is simple and safe in the process, suitable for industrial production.

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Abstract

The present invention discloses a preparation method and application of ammonium thiocarbonate sulfonate inner salt, and the general structural formula thereof is as follows: #imgabs0#, wherein X is any one of C, N, O, and S, and n is 3 or 4. The beneficial effects of the present invention are that the ammonium thiocarbonate sulfonate inner salt with high yield (>90%) and high purity (>98%) can be prepared simply and quickly by a one-pot method, and the reaction conditions are conducive to industrial scale-up production; in the production of electrolytic copper foil, the tensile properties of the copper foil material can be significantly improved by combining with other additives, and the copper foil with low defects, fine grains, and high tensile strength (>70kgf / mm 2 ) of 6μm ultra-thin electrolytic copper foil material.
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