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Zwitterionic ammonium carboxylate type silane coupling agent, siloxane ring body and preparation method of zwitterionic ammonium carboxylate type silane coupling agent and siloxane ring body

A silane coupling agent, siloxane ring technology, applied in the field of new zwitterionic compounds, can solve the problems of limited types and lack of commercial products, and achieve the effect of efficient synthesis

Inactive Publication Date: 2020-02-11
SHENZHEN XUSHENG SANYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the current product range of zwitterionic compounds is very limited and there is a lack of commercial products

Method used

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  • Zwitterionic ammonium carboxylate type silane coupling agent, siloxane ring body and preparation method of zwitterionic ammonium carboxylate type silane coupling agent and siloxane ring body
  • Zwitterionic ammonium carboxylate type silane coupling agent, siloxane ring body and preparation method of zwitterionic ammonium carboxylate type silane coupling agent and siloxane ring body
  • Zwitterionic ammonium carboxylate type silane coupling agent, siloxane ring body and preparation method of zwitterionic ammonium carboxylate type silane coupling agent and siloxane ring body

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Effect test

Embodiment 1

[0044] Preparation of the first intermediate: add 100 grams of allyldimethylamine, 120 grams of sodium chloroacetate and 400 grams of absolute ethanol to a 1-liter three-necked round-bottomed flask, heat to 80° C. under nitrogen protection and reflux and stir for 12 hours. The ammonization reaction yields a mixture containing allyldimethylammonium acetate zwitterion internal salt (first intermediate), a small amount of unreacted allyldimethylamine and sodium chloride. The mixture is concentrated under reduced pressure or vacuum distilled to obtain the allyl dimethyl ammonium acetate zwitterion inner salt-sodium chloride crystallization mother liquor, the crystallization mother liquor is initially evaporated and concentrated, and a small amount of isopropanol is added to obtain the crude mixed crystal of sodium chloride, Wash with separation solvent to remove impurities, and combine the filtrates. The separation solvent is a mixed solvent of absolute ethanol and methanol, where...

Embodiment 2

[0054] Preparation of the first intermediate: Add 100 grams of allyldimethylamine, 93.2 grams of sodium chloroacetate and 400 grams of absolute ethanol to a 1-liter three-necked round-bottomed flask, heat to 90° C. under nitrogen protection and reflux and stir for 10 hours. The ammonization reaction yields a mixture containing allyldimethylammonium acetate zwitterion internal salt (first intermediate), a small amount of unreacted allyldimethylamine and sodium chloride. The mixture is concentrated under reduced pressure or vacuum distilled to obtain the allyl dimethyl ammonium acetate zwitterion inner salt-sodium chloride crystallization mother liquor, the crystallization mother liquor is initially evaporated and concentrated, and a small amount of isopropanol is added to obtain the crude mixed crystal of sodium chloride, Wash with separation solvent to remove impurities, and combine the filtrates. The separation solvent is a mixed solvent of absolute ethanol and methanol, wher...

Embodiment 3

[0064] Preparation of the first intermediate: add 100 grams of allyldimethylamine, 108.4 grams of sodium chloroacetate and 400 grams of absolute ethanol to a 1-liter three-necked round-bottomed flask, heat to 70° C. under nitrogen protection and reflux and stir for 14 hours. The ammonization reaction yields a mixture containing allyldimethylammonium acetate zwitterion internal salt (first intermediate), a small amount of unreacted allyldimethylamine and sodium chloride. The mixture is concentrated under reduced pressure or vacuum distilled to obtain the allyl dimethyl ammonium acetate zwitterion inner salt-sodium chloride crystallization mother liquor, the crystallization mother liquor is initially evaporated and concentrated, and a small amount of isopropanol is added to obtain the crude mixed crystal of sodium chloride, The solvent was separated and washed to remove impurities, and the filtrates were combined. The separation solvent is a mixed solvent of absolute ethanol and...

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Abstract

The invention discloses a zwitterionic ammonium carboxylate type silane coupling agent and a preparation method thereof, and a siloxane ring body and a preparation method thereof, wherein the structural formulas of the zwitterionic ammonium carboxylate type silane coupling agent and the siloxane ring body are respectively represented by a formula (1), a formula (2) and a formula (5), R<1> is C1-C3alkyl, a is 0, 1 or 2, R3 and R2 are methyl or ethyl, m is 2, 3 or 4, and n is an integer of 1-5. According to the invention, the zwitterionic ammonium carboxylate type silane coupling agent and thesiloxane ring body meet the application requirements of chemical modification and graft modification on the surface of materials, and can be commercialized. The invention further provides a method capable of efficiently synthesizing the zwitterionic ammonium carboxylate type silane coupling agent and the siloxane ring body.

Description

technical field [0001] The invention relates to a novel zwitterionic compound, in particular to a zwitterionic ammonium carboxylate type silane coupling agent, a siloxane ring body and a preparation method thereof. Background technique [0002] For long-running photovoltaic power generation systems, the impact of panel dust cannot be underestimated. The dust on the surface of the panel has the functions of reflecting, scattering and absorbing solar radiation, which can reduce the transmittance of the sun, resulting in a decrease in the solar radiation received by the panel, and the output power is also reduced, and its effect is proportional to the accumulated thickness of dust. In addition, because the dust absorbs solar radiation, it can heat up the photovoltaic panel, and the dust contains some corrosive chemical components, which also reduces its photoelectric conversion efficiency. The dust on the surface of the panel has different effects on the power generation perfo...

Claims

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Application Information

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IPC IPC(8): C07F7/21C07F7/12C07F7/18C07C227/08C07C229/12
CPCC07F7/21C07F7/122C07F7/1804C07F7/188C07C227/08C07C229/12C07B2200/07
Inventor 韩鹏苟斌邱细妹陈士民余汉成居学成
Owner SHENZHEN XUSHENG SANYI TECH
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