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Thiol fatty acid stannous PVC (polyvinyl chloride) heat stabilizer and preparation method thereof

A technology of fatty acid stannous and heat stabilizer, applied in the direction of tin organic compounds and so on

Inactive Publication Date: 2014-09-10
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide a new type of mercaptan-based fatty acid stannous PVC heat stabilizer that is non-toxic and environmentally friendly and can overcome the shortcomings of traditional tin-containing stabilizers.

Method used

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  • Thiol fatty acid stannous PVC (polyvinyl chloride) heat stabilizer and preparation method thereof
  • Thiol fatty acid stannous PVC (polyvinyl chloride) heat stabilizer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Introduce nitrogen gas into the reactor equipped with a stirring device, add 8.2 g of N-(2-mercaptopropionyl)-sodium glycinate and 20 ml of methanol solution at room temperature (25°C), stir for 20 minutes, and then add dropwise The methanol solution of tin (5g of stannous chloride, 40ml of methanol), slowly added dropwise for 2h, observed that the clear liquid in the reactor gradually appeared a white turbid solid, continued to react for 24h after the dropwise addition, the white solid in the reactor would gradually increase. After the reaction was complete, the white solid was suction-filtered to obtain 6.05 g of N-(2-mercaptopropionyl)-glycinate stannous compound.

Embodiment 2

[0028] Introduce nitrogen gas into the reactor equipped with a stirring device, add 4.1g of N-(2-mercaptopropionyl)-sodium glycinate and 10ml of methanol solution at room temperature (25°C), stir for 20min, and then add dropwise The methanol solution of tin (5g of stannous chloride, 40ml of methanol), slowly added dropwise for 2h, observed that the clear liquid in the reactor gradually appeared a white turbid solid, continued to react for 24h after the dropwise addition, the white solid in the reactor would gradually increase. After the reaction was complete, the white solid was suction-filtered to obtain 5.45 g of N-(2-mercaptopropionyl)-glycinate stannous compound.

Embodiment 3

[0030] Feed nitrogen into the reactor equipped with a stirring device, add 8.2 g of N-(2-mercaptopropionyl)-sodium glycinate at 0°C, 20 ml of methanol solution, stir for 20 min, then add dropwise the methanol solution of stannous chloride (5g of stannous chloride, 40ml of methanol), slowly add dropwise for 2 hours, observe that the clear liquid in the reactor gradually turns into a white turbid solid, continue to react for 24 hours after the dropwise addition, and the white solid in the reactor will gradually increase. After the reaction was complete, the white solid was suction-filtered to obtain 3.96 g of N-(2-mercaptopropionyl)-glycinate stannous compound.

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Abstract

The invention discloses a thiol fatty acid stannous PVC (polyvinyl chloride) heat stabilizer and a preparation method thereof. The key point of the technical scheme is as follows: the thiol fatty acid stannous PVC heat stabilizer is N-(2-mercaptopropionyl)-stannous glycinate, and has a structural formula shown in the specification. The invention also discloses a method for preparing the thiol fatty acid stannous PVC heat stabilizer. The stannous PVC heat sterilizer is a solid compound, and is convenient to transport and use; non-toxic stannous chloride is used in the PVC stabilizer, so that usage of toxic organic tin is avoided, and the effect of non-toxicity and environmental-friendliness is achieved; the tin element in the thiol fatty acid stannous PVC heat stabilizer can be combined with chloride ions in hydrogen chloride and is oxidized to generate a stable stannic chloride compound in a heating condition, the hydrogen ions in the hydrogen chloride is combined with thiol to form thioalcohol, and the dehydrochlorination is not catalyzed.

Description

technical field [0001] The invention belongs to the technical field of PVC heat stabilizer preparation, and in particular relates to a novel mercaptan fatty acid stannous PVC heat stabilizer and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC for short) is one of the five general-purpose plastics. It is an ideal material due to its low price and outstanding balance performance. It is also an ancient and active variety in the history of plastic applications. Its global output is second only to polyvinyl chloride Vinyl comes in second. my country is one of the largest producers of PVC resin. The domestic PVC industry has made great progress after more than 50 years of development. At present, there are more than 100 PVC production enterprises in China, and the production capacity ranks first among domestic synthetic resins. [0003] Generally, when PVC is heated above 130°C, it begins to release HCl. This is because in the process of manufa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/58C08L27/06C07F7/22
Inventor 李伟齐庆华姜玉钦谭绪霞张玮玮毛龙飞侯茜茜徐桂清
Owner HENAN NORMAL UNIV
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