Galvanic nickel or nickel alloy electroplating bath for precipitating semi-bright nickel or semi-bright nickel alloy coatings

摘要

The present invention is a galvanic nickel or nickel alloy hydrocarbon bath for precipitating a semi-gloss nickel or semi-gloss nickel alloy coating, wherein the hydrocarbon bath is the general formula (I) TIFF2022528995000008.tif49147 (in the formula, R1 = SO3). C1-C18 hydrocarbon groups containing groups, or C1-C18 hydrocarbon groups containing carboxyl groups, or C1-C18 hydrocarbon groups containing aromatic and / or heteroaromatic groups; R2 = NR3R4 or OR5. Group or cyclic NR6 group, R3, R4, R5 = hydrogen, or C1-C18 aliphatic hydrocarbon group, or C1-C18 hydrocarbon group containing aromatic and / or heteroaromatic groups, R3 , R4 and R5 are the same or different; R6 = C3 to C8 hydrocarbon groups, or at least one carbon atom is a C3 to C8 hydrocarbon group substituted with a hetero atom; n = 1 to 3) It is characterized by containing at least one compound and / or a salt thereof (I) having; an electroplating bath having a total concentration in the range of 0.002 g / l to 0.15 g / l of at least one acetylene compound and / or its. Further comprising a salt, at least one acetylene compound and / or a salt thereof is H-C≡C-CH2-N (ethyl) 2, H-C≡C-CH2-O-CH2-CH2-OH, CH3-CH (OH)-. C≡C-CH (OH) -CH3, CH3-C (CH3) (OH) -C≡C-C (CH3) (OH) -CH3, HO-CH2-C≡C-CH2-OH, HO-CH2-CH2 -O-CH2-C≡C-CH2-O-CH2-CH2-OH, H-C≡C-CH2-O-CH2-CH2-CH2-OH, and HO-CH2-C≡C-CH2-O-CH2- Concerning electroplating baths selected from the group consisting of CH2-CH2-OH, and where the hydrocarbon bath comprises a hydrocarbon chloral and the hydrocarbon chloral has a concentration of less than 0.07 g / l.