A kind of preparation technology of tert-butyl hydroquinone
A tert-butyl hydroquinone and a technology for a preparation process are applied in the preparation of organic compounds, chemical instruments and methods, organic chemistry, etc., and can solve the problems of solvent residue, pollution, low process efficiency, etc. The effect of reducing side reactions and huge economic benefits
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0020] Put 110kg of hydroquinone, 116kg of tert-butyl acetate and 294kg of dilute sulfuric acid, the concentration of dilute sulfuric acid is 50%, add to the reaction kettle, heat up to 85°C under stirring, react for 8 hours to complete the reaction, cool to 65°C and then centrifugally filter , the filtrate sulfuric acid is recovered and recycled, and the obtained filter residue is washed with 1 times warm water to obtain a crude product of tertiary butyl hydroquinone, wherein the content of tertiary butyl hydroquinone is 70%.
Embodiment 2
[0022] Put 110kg of hydroquinone, 116kg of tert-butyl acetate and 588kg of dilute sulfuric acid, the concentration of dilute sulfuric acid is 20%, put into the reaction kettle, heat up to 95°C under stirring, react for 1 hour to complete the reaction, cool to 75°C and then centrifugally filter , the filtrate sulfuric acid is recovered and recycled, and the obtained filter residue is washed with 3 times warm water to obtain a crude product of tertiary butyl hydroquinone, wherein the content of tertiary butyl hydroquinone is 75%.
Embodiment 3
[0024] Put 110kg of hydroquinone, 116kg of tert-butyl acetate and 392kg of dilute sulfuric acid, the concentration of dilute sulfuric acid is 35%, put into the reaction kettle, heat up to 90°C under stirring, react for 5 hours to complete the reaction, cool to 72°C and then centrifugally filter , the filtrate sulfuric acid is recovered and recycled, and the obtained filter residue is washed with 2 times warm water to obtain a crude product of tertiary butyl hydroquinone, wherein the content of tertiary butyl hydroquinone is 72%.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com