Use of the thiuronium salt as a brightener for water - acidic nickel electroplate bath

摘要

(57) Abstract To produce the nickeling formation part as a major component, by electroplate makes precipitate the nickel from the water - acidic bath which contains above nickel salt 1 genus, above inorganic Acid 1 genus and above brightener 1 genus, at that time, general expression I: [In formula, R as for¹ - R⁴ C₁ - C₁₈ - alkyls displacement hydrogen and the unsubstituted or by the carboxyl group, C₁ - C₄ - alkoxy carbonyl groups or the cyano group, C₂ - C₁₂ - arukeniru, C₂ - C₁₂ - alkynyls, C₅ - C₈ - cycloalkyls, C₇ - C₁₂ - phenyl alkyls or the unsubstituted or C₁ - C₄ - alkyl groups, C₁ - C₄ - alkoxy groups, the halogen atom, the hydroxyl basis, the phenyl group or C₁ - C₄ - alkoxy carbonyl groups in 1 or 2 dependingTo display the phenyl displacement, Y, chemical bond or to display alkylene, the alkenylene or the alkynylene which possess up to each C atomic 20 of linear or branching condition, as for A, hydrogen or formula: coh, cor5, cooh, coor5, conr6r7, coch2coor5, ocoh, ocor5, nr6cor5, nr6cor5, or5, so2r5, so2oh, so2or5 and po (OH) ₂, po (OH) (OR⁵), po (OR⁵) ₂, OPO (OH) ₂, opo (OH) (OR⁵) or opo (OR⁵) ₂ (in formula, as for R⁵, C₁ - C₁₂ - alkyls, C₂ - C₁₂ - arukeniru, C₂ - C₁₂ - alkynyls, C₅ - C₈ - cycloalkyls, C₇ - C₁₂ - phenyl alkyls orThe phenyl displacement the unsubstituted or C₁ - C₄ - alkyl groups, the halogen atom, the hydroxyl basis, the phenyl group or by C₁ - C₄ - alkoxy carbonyl groups 1 or 2 is displayed, R⁶ and R⁷ hydrogen or displays C₁ - C₄ - alkyls) to display the basis, n 1 - 4or displays the organicity anion] uses the thiuronium salt as the brightener.