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A kind of nitrogen-containing heterocyclic rare earth stabilizer

A rare earth stabilizer and nitrogen heterocycle technology, applied in the field of PVC processing aids, can solve problems such as unsatisfactory thermal stability, achieve high-efficiency thermal stability, improve mechanical strength, and inhibit discoloration.

Active Publication Date: 2021-12-14
常州佑佳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a nitrogen-containing heterocyclic rare earth stabilizer for the unsatisfactory thermal stability of PVC rare earth stabilizers in the prior art, which uses 1H-pyrrole-2,3,4,5- Ethyl tetracarboxylate, aliphatic amines, and lanthanides are used as raw materials, and a nitrogen-containing heterocyclic rare earth stabilizer material is obtained through multi-step reactions such as substitution and esterification. and other properties, and can also be used in combination with other heat stabilizers. This material can be widely used in various PVC products

Method used

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  • A kind of nitrogen-containing heterocyclic rare earth stabilizer
  • A kind of nitrogen-containing heterocyclic rare earth stabilizer
  • A kind of nitrogen-containing heterocyclic rare earth stabilizer

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A preparation method of a nitrogen-containing heterocyclic rare earth stabilizer, comprising the following steps:

[0029] (1) Dissolve 1mol 1H-pyrrole-2,3,4,5-tetracarboxylic acid ethyl ester in 30mol ethanol containing 1mol potassium hydroxide, stir and heat to reflux for 12h, filter, distill under reduced pressure, dissolve in 10mol deionized water , add 1 mol of hydrochloric acid, stir for 0.5 h, add 15 mol of diethyl ether, shake, separate the liquid, take the organic phase, and distill under reduced pressure to obtain the intermediate product I;

[0030] (2) 1mol I was added in 5mol acetic anhydride, stirred and heated to reflux for 4h, after the reaction was finished, distilled under reduced pressure to obtain the intermediate product II;

[0031] (3) Dissolve 1 mol II in 20 mol acetonitrile, add 2.2 mol hexadecylamine, stir at room temperature for 20 h, after the reaction finishes, distill under reduced pressure and dry in the air to obtain the intermediate prod...

Embodiment 2

[0035] A preparation method of a nitrogen-containing heterocyclic rare earth stabilizer, comprising the following steps:

[0036] (1) Dissolve 1 mol of ethyl 1H-pyrrole-2,3,4,5-tetracarboxylate into 30 mol of ethanol containing 1 mol of potassium hydroxide, stir and heat to reflux for 16 hours, filter, distill under reduced pressure, dissolve in 10 mol of deionized water , add 1 mol of hydrochloric acid, stir for 0.5 h, add 15 mol of diethyl ether, shake, separate the liquid, take the organic phase, and distill under reduced pressure to obtain the intermediate product I;

[0037] (2) 1mol I was added in 5mol acetic anhydride, stirred and heated to reflux for 3h, after the reaction was finished, distilled under reduced pressure to obtain the intermediate product II;

[0038] (3) Dissolve 1 mol II in 20 mol acetonitrile, add 2.5 mol octadecylamine, stir at room temperature for 10 h, after the reaction finishes, distill under reduced pressure and dry in the air to obtain the inte...

Embodiment 3

[0042] A preparation method of a nitrogen-containing heterocyclic rare earth stabilizer, comprising the following steps:

[0043] (1) Dissolve 1mol 1H-pyrrole-2,3,4,5-tetracarboxylic acid ethyl ester in 30mol ethanol containing 1mol potassium hydroxide, stir and heat to reflux for 14h, filter, distill under reduced pressure, dissolve in 10mol deionized water , add 1 mol of hydrochloric acid, stir for 0.5 h, add 15 mol of diethyl ether, shake, separate the liquid, take the organic phase, and distill under reduced pressure to obtain the intermediate product I;

[0044] (2) 1mol I was added in 5mol acetic anhydride, stirred and heated to reflux for 5h, after the reaction was finished, distilled under reduced pressure to obtain the intermediate product II;

[0045] (3) Dissolve 1 mol II in 20 mol acetonitrile, add 2.4 mol octadecylamine, stir at room temperature for 15 h, after the reaction finishes, distill under reduced pressure and dry in the air to obtain the intermediate prod...

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Abstract

The invention belongs to the field of PVC processing aids. The invention relates to a nitrogen-containing heterocyclic rare earth stabilizer. The method uses ethyl 1H-pyrrole-2,3,4,5-tetracarboxylate, aliphatic amines, and lanthanides as raw materials, and undergoes multiple steps such as substitution and esterification. The reaction obtains a nitrogen-containing heterocyclic rare earth stabilizer material. The new nitrogen-heterocyclic rare earth stabilizer not only effectively solves the problem of unsatisfactory thermal stability of commonly used PVC rare earth stabilizers, but also has high-efficiency thermal stability, light stability, lubrication and other properties, and can also be compounded with other thermal stabilizers The material can be widely used in various PVC products.

Description

technical field [0001] The invention relates to a nitrogen-containing heterocyclic rare earth stabilizer. The invention belongs to the field of PVC processing aids. Background technique [0002] PVC is one of the five general-purpose plastics in the world, and its world output is second only to polyethylene. Polyvinyl chloride is widely used in various fields such as chemical industry, construction, light industry, packaging and cables due to its various excellent properties, such as good mechanical properties, flame retardancy, corrosion resistance and low price. However, during the synthesis of PVC, a large number of structural defects, such as allyl chloride, tertiary chlorine, etc., will be produced. Because of the existence of these unstable defects, PVC is prone to dehydrochlorination reaction and degradation during processing, seriously affecting the processing performance and mechanical properties of PVC, so it is necessary to add heat stabilizers to PVC resin. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/00C08L27/06C07D207/34
CPCC08K5/0091C08L27/06C07D207/34C08L2201/08C08L33/04
Inventor 赵勇
Owner 常州佑佳新材料科技有限公司
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