Process for producing epoxidation hexahydrophthalic acid di-octyl

A technology of dioctyl dicarboxylate and epoxidized cyclohexane, which is applied in the production process of epoxidized cyclohexane dioctyl phthalate, and can solve the problems of long reaction cycle, high production cost, and large amount of waste water. , to achieve the effects of short production cycle, reduced production cost, and less wastewater discharge

Inactive Publication Date: 2009-04-08
河南庆安化工高科技股份有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of epoxidized cyclohexane dioctyl phthalate production process, overcome the problems of complicated existing process, long reaction cycle, much waste water and high production cost

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for producing epoxidation hexahydrophthalic acid di-octyl
  • Process for producing epoxidation hexahydrophthalic acid di-octyl
  • Process for producing epoxidation hexahydrophthalic acid di-octyl

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] at 10m 3 Add 4143kg of tetrahydrophthalic anhydride, 7857kg of octanol and 124.29Kg of 20% sulfuric acid solution in the esterification reaction kettle, and reflux at 120-140°C for about 2 hours under a vacuum pressure of 0.075-0.095Mpa to measure the acid value of the crude product End esterification when it is below 2.5mgKOH / g; add 584kg of 30% hydrogen peroxide, 387kg of formic acid, 10Kg of 20% sulfuric acid solution, react at 75-85°C for 3.5h, then neutralize and wash with water, strip alcohol, vacuum distillation, decolorization and filtration to obtain the finished product of epoxidized cyclohexane dioctyl phthalate, and the product performance index is shown in Table 1.

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

PUM

PropertyMeasurementUnit
acid valueaaaaaaaaaa
Login to view more

Abstract

The invention relates to a process for producing epoxidationdioctyl cyclohexane phthalate. THPA and octanol are used as raw materials, and have esterification reaction under the action of catalyst to produce tetrahydrochysene dioctylphthalate; when the esterification reaction finishes, an overoxidation agent and an acidizer are added to the tetrahydrochysene dioctylphthalate for epoxidation reaction, and are subjected to neutralization, washing, steam stripping and dealcoholization, decompression and distillation, and decolorization and filtration to obtain epoxidationdioctyl cyclohexane phthalate. The process has the advantages of simple processing, short production period which is shorted by approximately two hours, less equipment investment, less waste water discharge which is reduced by approximately 20 percent, small energy consumption, and reduction of production cost by approximately 10 percent.

Description

(1) Technical field [0001] The invention relates to a production process of epoxidized cyclohexane dioctyl phthalate. (2) Background technology [0002] At present, the production process of synthesizing epoxidized cyclohexane dioctyl phthalate (EPS for short) in the industry mainly adopts a two-step synthesis process. The first step is to use tetrahydrophthalic anhydride and octanol as raw materials, under the action of a catalyst After esterification, neutralization, water washing, stripping, dealcoholization, vacuum distillation, refining, decolorization and filtration, the finished product of dioctyl tetrahydrophthalate is obtained; the second step is to mix dioctyl tetrahydrophthalate and Oxidizing reagents and acidic agents are used as raw materials, and the finished product of epoxidized cyclohexane phthalate dioctyl is obtained through epoxidation, neutralization, water washing, vacuum distillation, refining, decolorization and filtration. The shortcoming of this te...

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

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C07D303/40C07D301/12
Inventor 刘冰宋广勋王俊云郜丽红王艳丽刘卫丽
Owner 河南庆安化工高科技股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap