Method for preparing 2, 2-bis (3-nitro-4-hydroxyphenyl) hexafluoropropane by microchannel reactor

A microchannel reactor, hydroxyphenyl technology, applied in chemical instruments and methods, chemical/physical/physical chemical reactors, preparation of nitro compounds, etc. Exacerbating problems such as rapid reaction, avoiding intermediate separation steps, and reducing by-products
CN113105331APending Publication Date: 2021-07-13海南夸克科技有限公司
6 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
海南夸克科技有限公司
Publication Date
2021-07-13

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

Abstract

The invention discloses a method for preparing 2, 2-bis (3-nitro-4-hydroxyphenyl) hexafluoropropane by a microchannel reactor. The method comprises the following steps: (1) fully mixing and preheating bisphenol AF and an organic solvent to obtain a bisphenol AF solution, and respectively introducing the bisphenol AF solution and a preheated nitrating agent as two strands of materials into a continuous flow microchannel reactor through a metering pump; (2) controlling the flow rate of the material through a metering pump, enabling the bisphenol AF solution and the nitrating agent to respectively enter a micro-channel reactor module for mixed reaction, and enabling a product to flow out from an outlet of the reactor; and (3) carrying out post-treatment on the material obtained from the outlet of the microchannel reactor to obtain a pure product of 2, 2-bis (3-nitro-4-hydroxyphenyl) hexafluoropropane. The method provided by the invention can realize continuous production, has mild reaction conditions, high reaction efficiency and high yield, and is suitable for industrial production.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of chemical synthesis, in particular to a method for preparing 2,2-bis(3-nitro-4-hydroxyphenyl)hexafluoropropane with a microchannel reactor. Background technique

[0002] 2,2-bis(3-nitro-4-hydroxyphenyl)hexafluoropropane is a very important chemical raw material and is also used for the synthesis of 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane It can be used as a monomer for the preparation of polymer materials, and is widely used in the fields of aviation, aerospace, electronics, automobiles, electronic communications, and precision machinery automation.

[0003] At present, most of the industrial preparation of 2,2-bis(3-nitro-4-hydroxyphenyl)hexafluoropropane uses concentrated nitric acid, nitric acid mixed acid, metal nitrate and other nitrating agents to complete the nitration reaction, but the actual production will The production of a large amount of acidic wastewater does not conform to the production c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More