METHOD OF PREPARING BRIGHTNESS-FORMING ADDITIVE Russian patent published in 1998 - IPC

Abstract RU 2123070 C1

FIELD: electroplating. SUBSTANCE: invention is related with electroplating coatings from tin and its alloys and may find use in manufacture of multilayer plates in electronic and radio engineering. Preparation of additive includes adding amine to unsaturated aldehyde, in particular, cinnamic aldehyde, preliminarily mixed with ethanol at ethanol/aldehyde/amine volume ratio from 7:1:0.005 to 7:1:0.1. Amine is based on ethylene polymer and has general formula H₂N(CH₂CH₂NH₂)_n where n=1-5. Resultant solution is exposed to light for 12-16 days. EFFECT: reduced toxicity of electrolyte. 1 tbl

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RU 2 123 070 C1

Authors

Popov A.N.

Tjutina K.M.

Kotel'Nikov D.S.

Dates

1998-12-10—Published

1996-09-30—Filed