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Carrier brightening agent for potassium chloride galvanization and preparation method thereof

A technology of carrier brightener and potassium chloride, which is applied in the field of carrier brightener, can solve the problems of unfavorable industrialization, cumbersome operation, harsh conditions, etc., and achieve the effects of environmental protection, easy process and low cost

Inactive Publication Date: 2013-02-27
湖北吉和昌化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above documents all affirm that the method of 1,3-propane sultone has high yield and mild reaction conditions; patent CN102503863A adopts 1,3-propane sultone for sulfonation, uses anhydrous tetrahydrofuran as solvent and sodium hydride as base, After the reaction, it is purified by distillation and silica gel column chromatography, and then dried to obtain a solid. It can be seen that the operation is cumbersome and the conditions are harsh, which is not conducive to industrialization

Method used

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  • Carrier brightening agent for potassium chloride galvanization and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 5 mol of structural formula C to the dry reactor 8 h 17 O(CH 2 CH 2 O) 12 H n-octanol polyoxyethylene ether 3.3Kg, pass into N 2, adjust the speed of the agitator to 600 rpm, heat up to 40-50°C, add 210g of NaOH (mesh 100, 5.25mol) into the solid feeder, keep the feed rate at 4g / min; add the solid material for 30min Afterwards, start to add 600g (4.9mol) of 1,3-propane sultone dropwise. At the same time, use a water bath to cool down and keep the temperature at 40-50°C. The dropwise addition is completed within 1h. Afterwards, the temperature is raised to 60°C for 2h, and the reaction is terminated, and 500g of water is added. , add dilute hydrochloric acid to adjust the pH value to 6-8, let stand overnight and separate layers, the upper liquid is the structural formula C 8 h 17 O(CH 2 CH 2 O) 12 (CH 2 ) 2 SO 3 Na carrier brightener 1 was measured by two-phase titration and the calculated yield was 93.1%.

Embodiment 2

[0029] Add 5 mol of structural formula C to the dry reactor 9 h 19 C 6 h 4 O(CH 2 CH 2 O) 15 H nonylphenol polyoxyethylene ether (NP-15) 4.4Kg, pass into N 2 , adjust the speed of the stirrer to 600 rpm, raise the temperature to 40-50°C, add 210g of NaOH (100 mesh, 5.25mol) into the solid feeder, and keep the feed rate at 4g / min; 30min after adding the solid material After that, start to add 600g (4.9mol) of 1,3-propane sultone dropwise. At the same time, use a water bath to cool down and keep the temperature at 40-50°C. After the dropwise addition is completed within 1h, raise the temperature to 60°C and react for 2h. To end the reaction, add 500g of water , add dilute hydrochloric acid to adjust the pH value to 6-8, let stand overnight and separate layers, the upper liquid is the structural formula C 9 h 19 C 6 h 4 O(CH 2 CH 2 O) 15 (CH 2 ) 2 SO 3 Na carrier brightener 2 was measured by two-phase titration and the calculated yield was 91.7%.

Embodiment 3

[0031] Add 5 mol of structural formula C to the dry reactor 6 h 13 O(CH 2 CH 2 O) 30 H's n-hexanol polyoxyethylene ether 7.1Kg, pass into N 2 , adjust the stirrer speed to 600 rpm, heat up to 50-60°C, add 283g of KOH (mesh 50, 5.05mol) into the solid feeder, keep the feed rate at 4g / min; add the solid material for 20min After that, start to add 549g (4.5mol) of 1,3-propane sultone dropwise. At the same time, use a water bath to cool down and keep the temperature at 40-50°C. After the dropwise addition is completed within 1h, the temperature is raised to 65°C for 1h. To complete the reaction, add 500g of water. Add dilute hydrochloric acid to adjust the pH value to 6-8, let stand overnight and separate layers, the upper liquid is the structure of C 6 h 13 O(CH 2 CH 2 O) 30 (CH 2 ) 2 SO 3 The carrier brightener 3 of K was measured by two-phase titration and the calculated yield was 92.3%.

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Abstract

The invention relates to a carrier brightening agent for the potassium chloride galvanization. The carrier brightening agent is fatty alcohol polyoxyethylene ether sulfonate with a structural formula of RO(CH2CH2O)n(CH2)2SO3M or alkylphenol ethoxylate sulfonate with a structural formula of RC6H4O(CH2CH2O)n(CH2)2SO3M, wherein R represents C6 to C14 saturated alkane; n is an integral number in the range of 5 to 30; and M represents alkali metal. The invention also provides a preparation method of the carrier brightening agent. The carrier brightening agent for the potassium chloride galvanization, which is provided by the invention, not only can have an effect of a nonionic surfactant serving as the carrier brightening agent, but also has a high stability in strong electrolyte. Meanwhile, according to the preparation method of the carrier brightening agent, which is provided by the invention, a two-step method is adopted to synthesize the carrier brightening agent, the process is easy to control, the production is easy to implement, the conversion rate is over 90 percent, the cost is low and the preparation method has a strong practicality.

Description

technical field [0001] The invention relates to a carrier brightener, in particular to a carrier brightener for potassium chloride galvanizing and a preparation method thereof. Background technique [0002] Chloride galvanizing is a bright galvanizing process developed in the early 1980s. This process is widely used because of its stable plating solution, high current efficiency, fast deposition speed, good dispersion ability, and simple treatment of three wastes. Potassium chloride galvanizing additive generally consists of three parts: main brightener, carrier brightener and auxiliary brightener. The main light agent is mainly aromatic aldehydes and ketones (such as o-chlorobenzaldehyde or benzylidene acetone, etc.), which can make the coating produce significant brightening and leveling effects. The role of the carrier brightener is to refine the crystal grains and increase the solubility of the main brightener, so that it can be evenly dispersed into the plating soluti...

Claims

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Application Information

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IPC IPC(8): C25D3/22
Inventor 杨威付远波陈彰评宋文超周世骏黄维黄开伟
Owner 湖北吉和昌化工科技有限公司
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