【発明の名称】はんだめっき用のスルホン酸鉛及び錫塩の電解製造法 - Daiwa Chemical Research Institute Co., Ltd.

Title:

【発明の名称】はんだめっき用のスルホン酸鉛及び錫塩の電解製造法

Document Type and Number:

Japanese Patent JP3340590

Kind Code:

B2

Abstract:

PURPOSE:To obtain an organic lead sulfonate and tin salt decreased in the count of radioactive alpha-particle by using an electrolytic cell separated into an anodic chamber and a cathodic chamber with a cation and anion exchange membrane and using a solution of a specific aliphatic and aromatic sulfonic acid as an electrolyic solution. CONSTITUTION:The solutions of the aliphatic sulfonic acid expressed by (X1)n-R- SO3H and the aromatic sulfonic acid expressed by a formula are used as the electrolyic solution. In the formulae, R is a 1-5C alkyl, X1 is OH, alkyl, aryl, alkylaryl, carboxyl or sulfo group and can be present in an optional position of the alkyl group and (n) is integers of 0-3. And X2 is OH, alkyl, aryl, alkylaryl, aldehyde, carboxyl, nitro, mercapto, sufo or amino group or two X2 can form naphthalene ring together with benzene ring and (m) is integers of 0-3. Lead or tin is used as the anode and DC voltage is impressed between the anode and the cathode.

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Inventors:

Yoshiaki Okuhama
Masafumi Masaki
Takao Takeuchi
Yoshiharu Matsuda
Masakazu Yoshimoto

Application Number:

JP14005395A

Publication Date:

November 05, 2002

Filing Date:

May 16, 1995

Export Citation:

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