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Supported solid base catalyst and application thereof

A solid base catalyst and supported technology, which is applied in the field of supported solid base catalysts, can solve the problems of polycarbonate products that are prone to side reactions, such as low quality, high price, etc., and achieve gelation avoidance, good catalytic efficiency, The effect of high molecular weight

Inactive Publication Date: 2019-07-12
CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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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 solve the problems of high price, easy side reactions and low quality of polycarbonate products existing in the catalysts for preparing isosorbide-based polycarbonate and its derivatives, and provide a catalyst with high activity and low toxicity. and cheap and readily available supported solid base catalysts

Method used

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  • Supported solid base catalyst and application thereof
  • Supported solid base catalyst and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Synthesize 20-KF / MgO-500 catalyst by impregnation method: dissolve KF in deionized water, add MgO to the solution, stir at room temperature for 12 hours, evaporate and dry at 80°C to obtain the precursor (white powder), at 500°C After calcination for 4.0h, 20-KF / MgO-500 can be obtained.

Embodiment 2

[0039] The 20-KF / MgO-500 catalyst was synthesized by ultrasonic impregnation method: KF was dissolved in deionized water, MgO was added to the solution, ultrasonic reaction was conducted for 6 hours, and evaporated and dried at 80°C to obtain the precursor (white powder) at 500°C. After calcination for 4.0h, 20-KF / MgO-500 can be obtained.

Embodiment 3

[0041] Synthesize 20-KF / CaO-500 catalyst by impregnation method: dissolve KF in deionized water, add CaO to the solution, stir at room temperature for 12 hours, and evaporate to dryness at 100°C to obtain the precursor (white powder). At 500°C After calcination for 3.0h, 20-KF / CaO-500 can be obtained.

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Abstract

The invention discloses a supported solid base catalyst and application thereof. The supported solid base catalyst is used for preparing isosorbide-based polycarbonate and derivatives thereof and includes a carrier and an alkali metal compound which is supported on the surface of the carrier; the carrier is alkaline earth metal oxide or / and rare earth metal oxide, and the alkali metal compound isone of alkali metal hydroxide, alkali metal carbonate, alkali metal halide, alkali metal nitrate and alkali metal acetate. During catalysis on the basis of the supported solid base catalyst, diphenylcarbonate and dihydroxy compounds serve as raw materials, and isosorbide-based polycarbonate and the derivatives thereof are synthesized through transesterification and condensation polymerization. The supported solid base catalyst is suitable for synthesis of multiple polycarbonates and has excellent universality; a synthesized polycarbonate material has a high yield and high quality, and economic benefits of enterprises can be greatly improved.

Description

Technical field [0001] The invention belongs to the technical field of polymer synthesis, and specifically relates to a supported solid base catalyst and its application. Background technique [0002] Polycarbonate (PC) is currently the fastest-growing engineering plastic. Its output is second only to polyamide. It has been used in the fields of electronics, optical media, auto parts and aerospace materials. Bisphenol A polycarbonate (BPA-PC) is the most widely used product in PC, which is attributed to its excellent thermal and mechanical properties. However, the latest research has found that the bisphenol A (BPA) in BPA-PC will migrate during use. Because the BPA molecule has a structure similar to estrogen, it may cause disease in the human body. Therefore, BPA-PC is used as food packaging and Biomedical materials become extremely unsafe. In addition, the extensive use of BPA, a raw material derived from petroleum resources, will not only aggravate oil depletion, but the no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G64/30
CPCC08G64/305C08G64/307
Inventor 王公应申小龙刘绍英李晨王庆印
Owner CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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