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Preparation method of PYP

A technology of pyridine alkynyl butanesulfonate and betaine, which is applied in the field of preparation of pyridine betaine alkynyl butanesulfonate, can solve the problems such as no public reports on the preparation method of pyridine alkynyl butanesulfonate, and achieve leveling Wide range, high product yield and good brightness

Active Publication Date: 2010-03-17
武汉松石科技股份有限公司
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AI Technical Summary

Problems solved by technology

[0005] But there is no public report on the preparation method of pyridyl betaine (PYP) butynylbutylsulfonate

Method used

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  • Preparation method of PYP
  • Preparation method of PYP
  • Preparation method of PYP

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preparation example Construction

[0037]The preparation method of pyridine betaine (PYP) of alkyne butyl sulfonate of the present invention, comprises the following steps successively, 1., preparation of sodium chlorobutyn sulfonate: get sodium sulfite to be dissolved in water, be made into the solution that concentration is 10%, slowly drop Hydrochloric acid, adjust the pH to 6.5-8, add the catalyst disodium edetate, slowly raise the temperature to 40-70°C, add 1,4-dichlorobutyne dropwise; add alkali to keep the pH at 6.5-8, pass Add an inert gas as a protective gas; after the dropwise addition, keep it warm at 40-70°C for 4-10 hours; after the reaction, let it stand for stratification, separate the upper liquid and recover it for later use; take the lower liquid, vacuum dehydrate, and remove the water The mass accounts for 80% of the total solution; after the dehydration finishes, add methanol to the mixture, stir at 55°C for 30 minutes, filter to obtain filter cake and filtrate; at 55°C, wash the filter cake...

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Abstract

The invention discloses a preparation method of PYP, which includes the following steps in turn: preparation of chloride butyl-butynel sodium sulfonate and synthesis of PYP. The preparation method ofPYP has the following advantages: (1) compared with the same type of products (PPS and PPS-OH) which are sold in the market currently, the product has good lightness, wide leveling range and less usage; (2) ethylene diamine tetraacetic acid (EDTA) is taken as catalyst to synthesize chloride butyl-butynel sodium sulfonate, so the product has high yield, the reaction condition is moderate, and the reaction time is short; (3) raw materials including 1,4-dichloro-2-butyne, sodium sulfite and pyridine are cheap and easy to be obtained; during the reaction process, high temperature and high pressuredo not need; and the condition is moderate and the operation is easy; and (4) both the used dissolvent (such as methanol) and the excess raw materials (such as 1,4-dichloro-2-butyne and pyridine) canbe repeatedly used after being recovered, the cost is low and the pollution to the environment is less.

Description

technical field [0001] The invention relates to a preparation method of pyridinium butyl sulfonate betaine (PYP), which is an excellent nickel plating additive. Background technique [0002] Metal plating is a traditional process with a history of more than 100 years. The electroplating referred to in modern times is an application technology including surface treatment technology such as metal electrodeposition / chemical deposition / conversion film treatment. After metal or non-metal products are electroplated, a layer of metal coating or non-metal coating that is firmly bonded to the substrate is formed on the surface, and special physical-chemical functions are endowed, which not only makes the material anti-corrosion, anti-wear, and lubricating. Sex, conductivity, shielding and solderability, and can most economically and effectively improve product quality and prolong service life. According to different needs, the electroplating process can also endow the surface with ...

Claims

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Application Information

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IPC IPC(8): C07D213/04
Inventor 陈曦陈立霞杨磊魏良义邱立程海霞
Owner 武汉松石科技股份有限公司
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