Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of method of recovery antioxidant 1024 intermediate

A technology for antioxidants and intermediates, which is applied in the field of recovery of antioxidant 1024 intermediates, can solve the problems that the purity of antioxidant 1024 products is greatly affected, chemical reactions are prone to occur, and toxicity is difficult to reduce, so as to achieve resource recovery and recycling. Utilization, easy separation and extraction, and the effect of reducing toxicity

Active Publication Date: 2021-02-09
JIANGSU JIYI NEW MATERIAL CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But in the prior art, the productive rate of β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl hydrazide is low, and it is not easy to separate, so that the raw material cost is high, the toxicity is difficult to reduce, and the practicability is also greatly reduced; at the same time In the production process, the purity of the antioxidant 1024 product is greatly affected, and the reaction waste liquid of the antioxidant 1024 contains excessive β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl hydrazide. There is no recycling process in the preparation process, and the reaction waste liquid contains a large amount of β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl hydrazide, which is difficult to recycle and reuse, forming solid-liquid waste. On the one hand, it causes environmental pollution, on the other hand, it causes waste of resources
[0007] At the same time, β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl hydrazide is susceptible to secondary pollution, and is prone to chemical reactions when in contact with the outside air, so it is necessary to select a more suitable method for its storage

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
  • A kind of method of recovery antioxidant 1024 intermediate
  • A kind of method of recovery antioxidant 1024 intermediate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for reclaiming antioxidant 1024 intermediates, comprising the following steps:

[0035] S1, pretreatment: Pour 500kg of antioxidant 1024 reaction waste liquid into the reactor, which is fixed with a thermometer, a reflux condenser, a feeder and an inert gas protection device, and is carried out by using a stirring device in the reactor. Mechanical stirring, so that the reaction waste liquid mixed evenly;

[0036] S2. Primary solid-liquid separation: add 62.5kg of anhydrous sodium sulfate into the reactor through the feeder on the reactor, and after fully stirring through the stirring device, cool down until crystals are precipitated, and then continue to cool down to 0°C to wait for crystals After complete precipitation, the reaction waste liquid is transported to a centrifuge for centrifugation to obtain sodium sulfate decahydrate and reaction waste liquid I;

[0037] S3, a vacuum distillation: transfer the reaction waste liquid I obtained in the above steps ...

Embodiment 2

[0043] A method for reclaiming antioxidant 1024 intermediates, comprising the following steps:

[0044] S1, pretreatment: Pour 500kg of antioxidant 1024 reaction waste liquid into the reactor, which is fixed with a thermometer, a reflux condenser, a feeder and an inert gas protection device, and is carried out by using a stirring device in the reactor. Mechanical stirring, so that the reaction waste liquid mixed evenly;

[0045] S2. Primary solid-liquid separation: Add 78.8kg of anhydrous sodium sulfate into the reactor through the feeder on the reactor, and after fully stirring through the stirring device, cool down until crystals are precipitated, and then continue to cool down to 0°C to wait for crystals After complete precipitation, the reaction waste liquid is transported to a centrifuge for centrifugation to obtain sodium sulfate decahydrate and reaction waste liquid I;

[0046] S3, a vacuum distillation: transfer the reaction waste liquid I obtained in the above steps ...

Embodiment 3

[0052] A method for reclaiming antioxidant 1024 intermediates, comprising the following steps:

[0053] S1, pretreatment: Pour 500kg of antioxidant 1024 reaction waste liquid into the reactor, which is fixed with a thermometer, a reflux condenser, a feeder and an inert gas protection device, and is carried out by using a stirring device in the reactor. Mechanical stirring, so that the reaction waste liquid mixed evenly;

[0054] S2. Primary solid-liquid separation: Add 85.3kg of anhydrous sodium sulfate into the reactor through the feeder on the reactor, and after fully stirring through the stirring device, cool down until crystals are precipitated, and then continue to cool down to 0°C to wait for crystals After complete precipitation, the reaction waste liquid is transported to a centrifuge for centrifugation to obtain sodium sulfate decahydrate and reaction waste liquid I;

[0055] S3, a vacuum distillation: transfer the reaction waste liquid I obtained in the above steps ...

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

No PUM Login to View More

Abstract

The invention discloses a method of recovering an antioxidant 1024 intermediate, and relates to the technical field of organic chemistry. The method includes the following steps: pre-treatment on antioxidant 1024 reaction waste liquid, first solid-liquid separation, first vacuum distillation, secondary solid-liquid separation, secondary vacuum distillation, crystallization, collection and packaging. When the method disclosed by the invention is used to fully recover and utilize by-products in the antioxidant 1024 reaction waste liquid, toxin of products is reduced, the production is energy-conserving and environmentally friendly, and pollution to the environment is avoided. The technique is easy and convenient for operation, separation and extraction, and storage. Secondary pollution is effectively avoided. The antioxidant 1024 intermediate is fully recovered. Resourceful utilization is realized. Raw material cost of the antioxidant 1024 is greatly reduced. Large-scale industrialized production of the antioxidant 1024 is possible.

Description

technical field [0001] The invention relates to the technical field of organic chemical industry, in particular to a method for recovering an antioxidant 1024 intermediate. Background technique [0002] Antioxidant 1024 is a high-efficiency and non-polluting antioxidant with excellent performance. It is soluble in methanol and acetone, slightly soluble in chloroform and ethyl acetate, insoluble in water, and has a dual structure of hindered phenol and hydrazide. Oxidation and metal deactivation function. As a metal deactivator, it will not produce color stains, it can be used alone or in combination with other general antioxidants, and has excellent synergistic effect. It is suitable for polyethylene, polypropylene, polystyrene, polyamide, polyester, especially suitable for antioxidant of phenolic resin, which can effectively prevent the polymer from autoxidation caused by the presence of transition metal ions (such as catalyst residues). [0003] In the process of prepari...

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 Patents(China)
IPC IPC(8): C07C241/04C07C243/32
CPCC07C241/04C07C243/32
Inventor 郭骄阳赵崇鑫
Owner JIANGSU JIYI NEW MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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