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Chemical foaming agents containing tosyl groups

A chemical foaming agent, the technology of p-toluenesulfonyl group, is applied in the field of chemical foaming agent containing tosyl group, and can solve problems such as the influence of the electrical properties of polymers

Active Publication Date: 2021-01-22
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the decomposition by-products of ADCA and OBSH are polar, which can negatively affect the electrical properties of the polymer

Method used

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  • Chemical foaming agents containing tosyl groups
  • Chemical foaming agents containing tosyl groups
  • Chemical foaming agents containing tosyl groups

Examples

Experimental program
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Effect test

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[0115] Three comparative samples (CS1-CS3) and three samples (S1-S3) were prepared according to the following procedure.

[0116] CS1 was prepared using the following synthetic route:

[0117]

[0118] Cyanuric chloride (3.68g, 20.0mmol) was suspended in H 2 O (150ml), and 80% N was added dropwise over a period of 10 minutes at 25°C 2 h 4 at H 2 Solution in O (4.0 ml, 103.0 mmol). The mixture was stirred overnight at 100°C. The resulting product (CS1) was then filtered, washed well with acetonitrile and dried under vacuum. Yield = 3.21 g (94%), white powder.

[0119] S1 was prepared via a similar synthetic route but substituting p-toluenesulfonylhydrazide for hydrazine:

[0120]

[0121] Cyanuric chloride (3.68g, 20.0mmol) was suspended in acetonitrile (150ml), and p-toluenesulfonyl hydrazide (11.16g, 60.0mmol) and triethylamine (404mg, 4.0mmol) were added respectively. The mixture was stirred overnight at 90 °C. After the reaction was complete, the mixture was ...

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Abstract

Chemical foaming agents having p-toluenesulfonyl groups. Processes for preparing foamed polyolefin compositions using chemical foaming agents having p-toluenesulfonyl groups. Articles of manufacture containing formed polyolefins prepared using chemical foaming agents having p-toluenesulfonyl groups.

Description

technical field [0001] Various embodiments relate to chemical blowing agents containing tosyl groups. Additional embodiments relate to the use of tosyl-containing chemical blowing agents in foamable polyolefin compositions to form foamed polyolefins. A further embodiment relates to the use of such expanded polyolefins as insulation in telecommunication cables, especially in high frequency coaxial cables. Background technique [0002] Typically, insulation layers for high frequency telecommunication cables are produced from a mixture of polyolefins and nucleating agents, such as chemical blowing agents, where the mixture is foamed using an air injection extrusion process. In the foaming process, a blowing agent such as nitrogen or carbon dioxide is injected directly into the polyolefin melt mixture under pressure so as to dissolve in the melt and form a homogeneous mixture with the melt. This homogeneous mixture is kept under pressure (the amount determined by the gas used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/00C08J9/06C08L23/00
CPCC08J9/105C08J2203/04C08J2323/06C08J2423/06C08J2323/04H01B3/44C08J9/102C07D251/66C07D257/04C07C311/58C07C311/49H01B3/441C07C311/62
Inventor 孙刚伟陈红宇M·埃斯吉尔范仁华王硕恩
Owner DOW GLOBAL TECH LLC