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Low-cost plasticizer for PVC (polyvinyl chloride) and preparation method thereof

A plasticizer, low-cost technology, applied in the field of plasticizers for PVC, can solve the problem of difficult utilization of trimellitic anhydride heavy component by-products, achieve low cost, good performance, and solve the effects of difficult utilization

Pending Publication Date: 2022-07-22
HUANGSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention revolves around the heavy component by-product of trimellitic anhydride, mixes it with n-butanol, isooctyl alcohol, catalyst, activated clay, filter aid, etc., to prepare a low-cost plasticizer for PVC, and its performance is the same as that of the common trimellitate in the market. Trioctyl formate plasticizer is not much different, providing a valuable product to the market and solving the difficult problem of trimellitic anhydride heavy component by-product

Method used

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  • Low-cost plasticizer for PVC (polyvinyl chloride) and preparation method thereof
  • Low-cost plasticizer for PVC (polyvinyl chloride) and preparation method thereof
  • Low-cost plasticizer for PVC (polyvinyl chloride) and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A low-cost plasticizer for PVC, the mass parts of the raw materials are as follows:

[0029]

[0030] The activated clay model is qzh-01, which was purchased from Henan Qingzhihong Environmental Protection Technology Co., Ltd.;

[0031] The catalyst can be tetrabutyl titanate;

[0032] The filter aid is white diatomaceous earth with a particle size of 100 mesh, purchased from Shuolong Mineral Products Processing Plant in Lingshou County.

[0033] The preparation method of the low-cost PVC plasticizer comprises the following steps:

[0034] A. Add n-butanol, trimellitic anhydride heavy component by-product and catalyst according to the formula, stir evenly, then heat up to 120°C to carry out the esterification reaction with water;

[0035] B. Sampling to detect the acid value of the esterified product, when the acid value of the esterified product is reduced to 110 mgKOH / g, add the isooctanol of the formula amount, heat up to 190 °C and carry out high temperature se...

Embodiment 2

[0040] A low-cost plasticizer for PVC, the mass parts of the raw materials are as follows:

[0041]

[0042]

[0043] Described low-cost PVC plasticizer, wherein the activated clay model can be qzh-01, purchased from Henan Qingzhihong Environmental Protection Technology Co., Ltd.;

[0044] The catalyst can be tetrabutyl titanate;

[0045] The filter aid can be white diatomite with a particle size of 100 mesh (for example, purchased from Lingshou County Shuolong Mineral Products Processing Plant).

[0046] The preparation method of the low-cost PVC plasticizer comprises the following steps:

[0047] A. Add n-butanol, trimellitic anhydride heavy component by-product and catalyst according to the formula, and after stirring evenly, heat up to 122°C to carry out the esterification reaction with water;

[0048] B. Sampling to detect the acid value of the esterified product, when the acid value of the esterified product is reduced to 120 mgKOH / g, add the isooctanol of the fo...

Embodiment 3

[0053] A low-cost plasticizer for PVC, the mass parts of the raw materials are as follows:

[0054]

[0055] Described low-cost PVC plasticizer, wherein the activated clay model can be qzh-01, purchased from Henan Qingzhihong Environmental Protection Technology Co., Ltd.;

[0056] The catalyst can be tetrabutyl titanate;

[0057] The filter aid can be white diatomite with a particle size of 100 mesh (for example, purchased from Lingshou County Shuolong Mineral Products Processing Plant).

[0058] The preparation method of the low-cost PVC plasticizer comprises the following steps:

[0059] A. Add n-butanol, trimellitic anhydride heavy component by-product and catalyst according to the formula, and after stirring evenly, heat up to 120 ° C to carry out the esterification reaction with water;

[0060] B. Sampling to detect the acid value of the esterified product, when the acid value of the esterified product is reduced to 115 mgKOH / g, add the isooctanol of the formula amou...

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Abstract

The invention relates to a low-cost plasticizer for PVC (polyvinyl chloride) and a preparation method of the low-cost plasticizer. According to the method, low-cost trimellitic anhydride heavy-component byproducts, n-butyl alcohol, isooctyl alcohol and a catalyst are mainly used for step-by-step synthesis reaction, and purification is performed to obtain the low-cost plasticizer. The obtained plasticizer for PVC is low in cost, the performance of the plasticizer is not greatly different from that of a common trioctyl trimellitate plasticizer in the market, a valuable product is provided for the market, the problem that trimellitic anhydride heavy-component by-products are difficult to utilize is solved, and the plasticizer for PVC is worthy of popularization and application. And an effective method is provided for comprehensive utilization of trimellitic anhydride heavy component byproducts.

Description

technical field [0001] The invention relates to the technical field of plasticizers for PVC, in particular to a low-cost plasticizer for PVC obtained by using trimellitic anhydride heavy component by-products and the like and a preparation method thereof. Background technique [0002] In the oxidation process of trimellitic anhydride, such as ZL1131223C (the method of producing trimellitic anhydride by continuous oxidation process), ZL101402624B (the method of producing trimellitic anhydride by the liquid phase air oxidation of trimellitic acid), the final high temperature (about 230-250°C) is distilled under reduced pressure. After the trimellitic anhydride product, a large amount of trimellitic anhydride heavy component by-products will remain in the kettle, and this part of the trimellitic anhydride heavy component by-products mainly contains a certain amount of unseparated trimellitic anhydride (40-60%), part of phthalic acid (15-30%) ) and high-molecular polymer particl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/12C08L27/06C07C69/76C07C67/08
CPCC08K5/12C07C69/76C07C67/08C08L27/06
Inventor 王永垒孙光映江蓉黄良芳
Owner HUANGSHAN UNIV
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