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Azeotropic composition and application thereof

A technology of azeotropic composition and compound, applied in the field of hydrofluoroether, which can solve the problems of many by-products, strong corrosion, high energy consumption, etc.

Active Publication Date: 2019-04-19
TIANJIN CHANGLU CHEM NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process equipment of electrolytic fluorination using anhydrous hydrogen fluoride is highly corrosive, consumes a lot of energy, has high risks, and has many by-products

Method used

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  • Azeotropic composition and application thereof
  • Azeotropic composition and application thereof
  • Azeotropic composition and application thereof

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Embodiment Construction

[0034] In order to enable those skilled in the art to better understand the technical solutions of the present invention, descriptions will be made in conjunction with embodiments and accompanying drawings.

[0035] The present invention will be further illustrated below in conjunction with non-limiting examples and test methods. All parts, percentages and ratios are by weight unless otherwise indicated. Solvents and other reagents used were from Sigma-Aldrich Chemical Company unless otherwise stated.

[0036] Ether A: CF 3 CF 2 CF 2 OCF (CF 3 ) CF 2 OCH 3 preparation of

[0037] The present invention will be further illustrated below in conjunction with non-limiting examples and test methods. All parts, percentages and ratios are by weight unless otherwise indicated. Solvents and other reagents used were from Sigma-Aldrich Chemical Company unless otherwise stated.

[0038] 1: CF 3 CF 2 CF 2 OCF (CF 3 ) Preparation of C(O)F

[0039] CF 3 CF 2 CF 2 OCF (CF 3 ...

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Abstract

The invention belongs to the field of hydrofluoroether and particularly relates to an azeotropic composition and application thereof. The azeotropic composition comprises the following components: (1)a hydrofluoroether compound F [CF (CF3) CF2O] x-RH, wherein x = 2-7, RH is one of CH3, C2H5, n-C3H7 or i-C3H7; and (2) an organic solvent. The application of the azeotropic composition as a cleaningsolvent is provided, and an object needing to be cleaned is contacted with the azeotropic composition or vapor of the azeotropic composition until unwanted dirt is dissolved, dispersed or replaced andwashed off. The azeotropic composition is the cleaning solvent which has a boiling range suitable for various cleaning uses, and is acceptable in stability, low in toxicity, short in atmospheric service life, low in global warming latent value and low in ozone consumption potential.

Description

technical field [0001] The invention belongs to the field of hydrofluoroethers, and in particular relates to an azeotropic composition and application thereof. Background technique [0002] Chlorofluorocarbons (CFCs) are hydrocarbon chemical substances containing chlorine and fluorine elements, which are very stable on the earth's surface. However, when they are irradiated by ultraviolet rays at an altitude of 15-50 kilometers above the earth's surface, new Chlorine atoms can produce a series of reactions that destroy as many as thousands to hundreds of thousands of ozone molecules without damage to themselves. In this way, the ozone in the ozone layer is consumed more and more, the ozone layer becomes thinner and thinner, and even a hole in the ozone layer appears in some areas. [0003] The large release of chlorofluorocarbons (CFCs) has led to increasingly serious damage to the ozone layer. The participating countries of the Montreal Treaty have accelerated the pace of t...

Claims

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Application Information

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IPC IPC(8): C11D7/50C09K5/04
CPCC09K5/048C11D7/509
Inventor 闫锐贺光瑞
Owner TIANJIN CHANGLU CHEM NEW MATERIAL CO LTD
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