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Polishing agent for alkaline non-cyanide zincate zinc plating and process for preparing polishing agent composition

A cyanide zincate and brightener technology, which is applied in the field of composition brighteners and electro-galvanized brighteners, can solve problems such as unsatisfactory effects, and achieve the effects of low cost, convenient use, and excellent physical properties

Active Publication Date: 2004-11-10
JIANGMEN DESHANG KEZUO TECHNOLOGY INDUSTRIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although people have been continuously improving the alkaline cyanide-free zincate galvanizing brightener in recent decades, it has not yet achieved satisfactory results.

Method used

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  • Polishing agent for alkaline non-cyanide zincate zinc plating and process for preparing polishing agent composition
  • Polishing agent for alkaline non-cyanide zincate zinc plating and process for preparing polishing agent composition
  • Polishing agent for alkaline non-cyanide zincate zinc plating and process for preparing polishing agent composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In the reactor, add 13.6g imidazole, 15.7g diethanolamine, 20.2g N,N'-bis(N,N-dimethylaminoethyl)urea, 200ml water (the water added at this time should be able to fully dissolve the added compound), heated to 50°C, added dropwise 55.6g of epichlorohydrin, and the dropwise addition time was 40 minutes, and the temperature was controlled below the reflux temperature. After adding the epichlorohydrin, the temperature was raised to reflux temperature of 95°C, Keep it warm at this temperature for 8 hours, cool it down, and recover it to obtain the galvanized brightener.

Embodiment 2

[0052]In the reactor, add 16.2g 2-methylimidazole, 22.4g triethanolamine, 23g N, N'-bis(N,N-dimethylaminopropyl) urea, 200ml water, heat up to 60°C, and start to drop 64.8g of epichlorohydrin, the dropping time is 60 minutes, and the temperature is controlled below the reflux temperature. After the dropping is completed, the temperature is raised to 95°C, and kept at this temperature for 10 hours, cooled, and recovered to obtain galvanized brightener.

Embodiment 3

[0054] In the reactor, add 16.2g 2-methylimidazole, 17.8g N-methyldiethanolamine, 24.6g N, N'-two (N, N-dimethylaminopropyl) thiourea, water 200ml, be warmed up to At 70°C, start to add 55.6g of epichlorohydrin dropwise. The dropwise addition time is 40 minutes. Recycled to obtain galvanized brightener.

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Abstract

The invention is a basic cyanogen-free zincate zincification brightener and its combination brightener, using at least a nitrogen-containing heterocyclic compound 0.5-5.0mol, at least a hydroxy amine 0.5-4.0mol, and at least an acyl- or sulphonyl- containing di-t-amine 0.5-5.0mol to make random copolymerization reaction with epoxy chloropropane 4.0-10.0mol to generate a copolymer; and its making method: heating and mixing them together with a proper amount of water, the temperature controlled under return temperature and the time 0.5-2 hours, then raising temperature to return temperature and preserving heat for 4-10hours; the invention is extremely easy to dissolve in water, and when applied to basic cyanogens-free zincification technique, able to obtain excellent-performance and all-mirror brightness coating and has low cost.

Description

technical field [0001] The invention belongs to a bright additive for electro-galvanizing, in particular to an electro-galvanizing brightening agent suitable for an alkaline cyanide-free zincate electro-galvanizing process and a composition brightening agent composed of the same. Background technique [0002] The galvanizing process is divided into alkaline galvanizing and acid galvanizing. Alkaline galvanizing is divided into cyanide galvanizing and cyanide-free galvanizing. The typical acid galvanizing is chloride galvanizing and sulfate galvanizing. Among them, potassium chloride galvanizing and alkaline cyanide-free zincate galvanizing in chloride galvanizing are two representative cyanide-free galvanizing processes. At present, in order to meet the requirements of environmental protection, these two cyanide-free galvanizing The technology has been developed rapidly and widely used. [0003] In electroplating technology, additives and brighteners are very important. The...

Claims

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Application Information

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IPC IPC(8): C25D3/22
Inventor 左正勋马冲
Owner JIANGMEN DESHANG KEZUO TECHNOLOGY INDUSTRIAL CO LTD
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