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

Preparation method of anti-aging agent 6PPD

An anti-aging agent and decarboxylation technology, applied in the field of preparation of anti-aging agent 6PPD, can solve the problem of high oxide content, and achieve the effects of improving melting point, improving safety and improving compatibility

Pending Publication Date: 2022-02-15
SINOPEC NANJING RES INST OF CHEM IND CO LTD +2
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Changzhou Wuzhou Chemical Co., Ltd. disclosed a rubber antioxidant and its preparation method in the CN200810023039.X Chinese invention patent application: in the presence of tetrabutylammonium chloride catalyst, the antioxidant 6PPD and polymethyl terephthalate calcium zinc salt complex Combined reaction to generate modified rubber anti-aging agent, but the oxide content is as high as 16.8% after burning

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 of anti-aging agent 6PPD
  • Preparation method of anti-aging agent 6PPD
  • Preparation method of anti-aging agent 6PPD

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] Step 1: Cashew nut shell oil is decarboxylated and rectified at high temperature to obtain cardanol;

[0031] Step 2: reacting the cardanol obtained by rectification with the alkyl halide to generate the corresponding cardanol;

[0032] Step 3: react cardanol with anti-aging agent 6PPD to generate macromolecular anti-aging agent 6PPD containing cardanol structure.

[0033] Further, the temperature of high-temperature decarboxylation in step 1 is 50°C to 350°C.

[0034] Further, the decarboxylation rectification in step one is atmospheric rectification or vacuum rectification.

[0035] Further, the pressure of vacuum rectification is 0-20kPa.

[0036] Further, the haloalkane in step 2 is chloroalkane or bromoalkane.

[0037] Further, the etherification reaction temperature in step 2 is 55°C-85°C.

[0038] Furthermore, the reaction temperature of the cashew nut ether and the anti-aging agent 6PPD in step 3 is 35°C-80°C.

[0039] The invention discloses a method for...

Embodiment 1

[0042] Weigh 60g of cashew nut shell oil and heat it in an oil bath in a 100mL three-necked flask, and carry out decarboxylation and rectification at atmospheric pressure. React with 14.5g of 1,2-dibromoethane at a constant temperature of 60°C for 5 hours. After the reaction, process the reaction solution to obtain a brown-red liquid cashew ether. Weigh 20g of anti-aging agent 6PPD and polymerize it with cashew ether. The polymerization temperature is 65°C , after reacting for 5 hours, the anti-aging agent 6PPD containing cardanol structure was obtained.

Embodiment 2

[0044] Weigh 60g of cashew nut shell oil and heat it in an oil bath in a 100mL three-neck flask to carry out decarboxylation rectification under reduced pressure. The distillate was reacted with 21.4g of 1,2-dibromoethane under the action of potassium hydroxide at a constant temperature of 55°C for 6 hours. After the reaction, the reaction solution was processed to obtain a light yellow liquid cashew ether. Weighed 29.5g of anti-aging agent 6PPD and Cardanol ether is polymerized at a temperature of 60° C. After 5 hours of reaction, an antioxidant 6PPD containing a cardanol structure is obtained.

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 preparation method of an anti-aging agent 6PPD, which comprises the following steps: by taking cashew nut shell oil as a raw material, carrying out high-temperature decarboxylation rectification to obtain cardanol, synthesizing the cardanol and alkyl halide to obtain a corresponding ether product, and reacting the ether product with the anti-aging agent 6PPD to generate the macromolecular anti-aging agent 6PPD containing a cardanol structure. According to the invention, the defects that the existing anti-aging agent 6PPD is easy to migrate in a rubber product, is easy to extract from water and a solvent, is easy to cake at a high temperature and the like are overcome; wherein the anti-aging agent 6PPD is subjected to macromolecular and multifunctional treatment, so that the migration resistance, the extraction resistance, low toxicity, compatibility, safety, stability and long acting of the anti-aging agent are effectively improved, and the anti-aging agent has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a preparation method of anti-aging agent 6PPD Background technique [0002] The aging of rubber materials is an irreversible problem. Its essence is the breakage of the main chain, chain and cross-linking bonds of the polymer chain of the rubber material, which leads to the breakage of the polymer chain and the destruction of the internal structure of the material. Sticking, hardening, and deterioration of various performances, so that the material loses its use value. In order to alleviate the aging phenomenon of rubber material products, the commonly used anti-aging methods include physical and chemical methods. The more common physical method is to spread a layer of oil, wax or paint on the surface of the material, and block the contact between the product and the air. To achieve the purpose of anti-aging, the chemical method is to add anti-aging agent to the rubber ma...

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): C08G73/02C08K5/18C08L21/00C07C37/56C07C39/19C07C41/16C07C43/215
CPCC08G73/0266C08K5/18C07C37/56C07C41/16C08L2201/08C08L21/00C07C39/19C07C43/215
Inventor 吴其建韦志强杨忠林洪庆军陈永平管成年
Owner SINOPEC NANJING RES INST OF CHEM IND 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