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

Preparation method and device of rubber vulcanization accelerator DZ

A technology for rubber vulcanization and accelerator, applied in the field of preparation of rubber vulcanization accelerator DZ, can solve the problems of no specific value of yield and low yield, and achieve the effects of stable product quality, improved product yield and stable process conditions

Inactive Publication Date: 2017-05-31
SHANDONG SUNSINE CHEM
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent No. 200810053774.5, the process is: add isopropanol and dicyclohexylamine into the oxidation kettle, under stirring conditions, fully dissolve dicyclohexylamine in isopropanol, then add sulfuric acid, and control the pH value at the same time , then drop M-Na salt, and drop sodium hypochlorite at the same time, the resulting DZ product quality reached 99%, but the yield has no specific value
Most of these methods for synthesizing accelerator DZ have problems such as low yield and the treatment of saline wastewater.

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
  • Preparation method and device of rubber vulcanization accelerator DZ

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] as attached figure 1 The process shown in : add 400ml of isopropanol and 100g of dicyclohexylamine into the reaction kettle, under the conditions of 40°C and 800r / min, the dicyclohexylamine is fully dissolved in isopropanol, and the pipeline is opened Circulation reactor, start dripping sodium hypochlorite, M-Na salt and dilute sulfuric acid with the flow rate of 14ml / min, 7ml / min, 2ml / min respectively, dropwise time is 1h, control pH value in the process to be 9.0, pump out after the reaction is completed. Filter, wash with water, and dry to obtain accelerator DZ product with a yield of 98.4%.

Embodiment 2

[0029] as attached figure 1 The process shown in : add 400ml of isopropanol and 100g of dicyclohexylamine into the reaction kettle, under the conditions of 40°C and 800r / min, the dicyclohexylamine is fully dissolved in isopropanol, and the pipeline is opened Circulate the reactor, start dripping sodium hypochlorite, M-Na salt and dilute sulfuric acid with the flow rate of 7ml / min, 3.5ml / min, 1ml / min respectively, the dripping time is 2h, control the pH value in the process to be 9.5, after the reaction is completed Suction filtration, washing with water and drying to obtain accelerator DZ product with a yield of 98.7%.

Embodiment 3

[0031] as attached figure 1 The process shown in: Add the mother liquor obtained in Example 2, 200ml of isopropanol and 100g of dicyclohexylamine into the reaction kettle, and fully dissolve the dicyclohexylamine in the isopropanol at 40°C and 800r / min. In propanol, open the pipeline circulation reactor, start dripping sodium hypochlorite, M-Na salt and dilute sulfuric acid at flow rates of 7ml / min, 3.5ml / min, and 1ml / min respectively, and the dropping time is 2h, and the pH value is controlled during the process It was 9.5, and after the reaction was completed, it was suction filtered, washed with water, and dried to obtain the accelerator DZ product with a yield of 99.5%.

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 relates to the technical field of production of rubber vulcanization accelerators and in particular discloses a preparation method and device of a rubber vulcanization accelerator DZ. The preparation method of the rubber vulcanization accelerator DZ is characterized by comprising the following steps: adding isopropyl alcohol and dicyclohexylamine into a reaction kettle; starting a circulating pipeline reactor; carrying out three-dropwise adding operation of sodium hypochlorite, M sodium salt and diluted sulfuric acid respectively; carrying out the whole oxidization process in a pipeline reactor; carrying out cyclic reaction through a circulating pump; after reacting, washing with water and drying to obtain an accelerator DZ product. According to the preparation method and device, the pipeline cyclic reaction is carried out and technological conditions are stable; a mother solution obtained by oxidization is cyclically utilized; the pipeline cyclic reaction and the mother solution recycle have dual effect and the yield of the obtained product is greatly improved; the product has stable quality and relatively low consumption; the energy consumption is relatively low, and wastewater is relatively easily treated.

Description

[0001] (1) Technical field [0002] The present invention relates to the technical field of rubber vulcanization accelerator production, and in particular to a preparation method and device of rubber vulcanization accelerator DZ. [0003] (2) Background technology [0004] With the progress of society and the development of the rubber industry, the research and production of rubber vulcanization accelerators have received more and more attention. As a post-effect accelerator, DZ has the best anti-scorch performance of sulfenamide accelerators. It is one of the indispensable raw materials for the production of radial tires, steel wire tapes and thick rubber parts, and has good development prospects. [0005] At present, the reaction equipment for synthesizing DZ products in industry uses enamel kettles and performs a three-drop oxidation operation. This method has the advantages of mature technology and simple production equipment. However, as the reaction proceeds, the raw mate...

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
IPC IPC(8): C07D277/80
CPCC07D277/80
Inventor 徐清华薛香菊
Owner SHANDONG SUNSINE CHEM
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