Preparation method of PYP
A technology of pyridinium butylene sulfonate and betaine, which is applied in the field of preparation of pyridine butylene butyl sulfonate and betaine, can solve the problems of no public reports on the preparation method of pyridine butylene butyl sulfonate and betaine, and achieve leveling Wide range, high product yield, good bright effect
Active Publication Date: 2010-12-08
武汉松石科技股份有限公司
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Problems solved by technology
[0005] But there is no public report on the preparation method of pyridyl betaine (PYP) butynylbutylsulfonate
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preparation example Construction
[0037]The preparation method of pyridinium betaine alkynylbutanesulfonate (PYP) of the present invention comprises the following steps in turn: 1. Preparation of sodium chlorobutynesulfonate: dissolving sodium sulfite in water to prepare a solution with a concentration of 10%, slowly adding dropwise Hydrochloric acid, adjust pH to 6.5-8, add catalyst disodium ethylenediaminetetraacetate, slowly heat up to 40-70°C, add 1,4-dichlorobutyne dropwise; add alkali to keep pH at 6.5-8, Inert gas is used as protective gas; after the dropwise addition is completed, the reaction is kept at 40-70 ° C for 4-10 hours; after the reaction is completed, let stand for stratification, and the upper layer liquid is separated and recovered for use; the lower layer liquid is removed, vacuum dehydrated, and water The mass accounts for 80% of the total solution; after dehydration, add methanol to the mixture, stir at 55°C for 30 minutes, and filter to obtain filter cake and filtrate; at 55°C, wash the...
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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 of PYP 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 pressure do 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) can be 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 pyridine betaine acetylenic butanesulfonate (PYP), which is an excellent nickel plating additive. Background technique [0002] Metal plating is a traditional craft with a history of more than 100 years. The modern electroplating refers to an application technology including surface treatment technology such as metal electrodeposition / chemical deposition / conversion coating treatment. Metal or non-metal products are electroplated to form a metal coating or non-metal coating on the surface that is firmly bonded to the substrate, and endows special physical-chemical functions, which not only make the material anti-corrosion, anti-wear, lubricating It can improve the quality of products and prolong the service life in the most economical and effective way. According to different needs, the electroplating process can also endow the surface with electromagnetic, optical, optoelectronic, electronic, supercond...
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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