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Method for depolymerising oxygenated polymer materials by nucleophilic catalysis

A polymer and compound technology, applied to aliphatic compounds in the construction industry, petrochemical industry, electrical fields, can solve the problems of several types of recycling, and achieve the effect of large industrial value and low price

Active Publication Date: 2021-04-16
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028]However, the triple regeneration method has non-negligible operational disadvantages, such as the reaction is carried out at high temperature and pressure, and the use of expensive metals and / or compounds to catalyze the reaction
Furthermore, few methods are available to recycle several types of polymers simultaneously (recycled copolymers or blends of polymers) and are resistant to additives and / or impurities present in the polymers

Method used

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  • Method for depolymerising oxygenated polymer materials by nucleophilic catalysis
  • Method for depolymerising oxygenated polymer materials by nucleophilic catalysis
  • Method for depolymerising oxygenated polymer materials by nucleophilic catalysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0267]Example 1 : Trimethoxysilane ((MEO)3SiH) and Kotbu to solve PC-BPA

[0268]

[0269]The commercially available PC-BPA (123.2 mg; 0.5 mmol; 1 mole) and trimethoxysilane (244 mg; 2 mmol; 4 molar equivalents) were added to 1.5 ml of THF. The KOTBU catalyst (0.05 molar equivalents) was added while stirring. The reaction was reacted at room temperature (20 ° C ± 5 ° C), and then the solvent was evaporated under vacuum. The resulting product IIA was purified by using the same conditions described in the general method of operation. By purification, a product IIa having very high purity is obtained, wherein the yield is 97% relative to the introduced starting material.

[0270]At 25 ° C, 10 mL of NaOH (10%) in the methanol / water mixture was directly added to the reaction mixture, and a hydroxy product of a 2-hour product IIa was performed. The hydrolyzate (BPA) of the white solid was obtained by purification by the column using the condition described in the general operation method.

Embodiment 2

[0271]Example 2 : Trimethoxysilane ((MEO)3SiH)) and TBAT to explain PC-BPA

[0272]

[0273]Using (MEO)3SiH and KOTBUs to explain the same manner as in Example 1 of PC-BPA, and to deliver with TBAT (0.05 molar equivalents). In this case, 123.2 mg of PC-BPA (0.5 mmol; 1 molar equivalents) with 244 mg of trimethoxysilane (244 mg; 2 mmol; 4 molar equivalents) and 0.05 molar equivalent TBAT (13.5 mg, 0.025 mmol, 5 mol%) is used together. After 6 hours, it was completely converted into IIA. The product was purified by the same method of operation as in Example 1.

[0274]The hydrolysis of the product IIa made BPA (white solid, yield of 92%).

Embodiment 3

[0275]Example 3 : Trimethoxysilane ((MEO)3SiH) and TBAF (1M in THF) to solve PC-BPA

[0276]

[0277]Using (MEO)3SiH and KOTBUs to explain the same manner as in Example 1 of PC-BPA, and the TBAF (1M in THF) is given. In this case, 123.2 mg of PC-BPA (0.5 mmol; 1 molar equivalents) was used to trimethoxysilane (244 mg; 2 mmol; 4 molar equivalents) and 50 μl of TBAT (0.05 mmol, 0.1 molar equivalents). After 12 hours, it was completely converted into IIA.

[0278]The product was purified by the same method of operation as in Example 1. The hydrolysis of the product IIa made BPA (white solid, yield of 92%).

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Abstract

The present invention relates to a method for depolymerising oxygenated polymer materials, in particular by nucleophilic catalysis, and to the use of said method in the recycling of plastic materials and the preparation of aromatic and aliphatic compounds that can be used as fuel, synthesis intermediates, raw materials in the construction sector, and in the petrochemical, electrical, electronic, textile, aeronautical, pharmaceutical, cosmetic and agrochemical industries. The present invention also relates to a method for manufacturing fuels, electronic components, plastic polymers, rubber, medicines, vitamins, cosmetics, perfumes, food products, synthetic yarns and fibres, synthetic leathers, glues, pesticides and fertilisers, comprising (i) a step of depolymerisation of oxygenated polymer materials according to the method of the invention and, optionally, (ii) a step of hydrolysis and, optionally, (iii) a step of functionalisation and / or defunctionalisation.

Description

Technical field[0001]The present invention relates to a method of explaining an oxidative polymer, in particular by nucleophilizing a method of explaining an oxidative polymer, and the use of the method of recycling of plastic materials and the preparation of aromatic and aliphatic compounds. The above aromatic and aliphatic compounds can be used as fuels, synthesis intermediates, and raw materials in construction industries, petrochemical, electrical, electronics, textile, aviation, pharmaceutical, cosmetics, and agricultural chemistry industries.[0002]The invention also relates to a method for manufacturing fuel, electronic components, plastic polymers, rubber, drugs, vitamins, cosmetics, perfume, food, synthetic yarns, and fibers, synthetic leather, glue, pesticides, and fertilizers, including (i) the step of explaining the oxidative polymer according to the method of the present invention; and optionally, (ii) the step of hydrolysis; and optionally, (iii) functionalized and / or...

Claims

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Application Information

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IPC IPC(8): C08J11/18C07C1/213C07C1/22C07C29/09C07C31/20C07C33/26C08K5/54
CPCC08J11/18C08J2367/00C08J2369/00C07C37/0555C07C29/147C07C41/26Y02W30/62C07C39/16C07C33/26C07C31/20C07C31/207C07C43/132C08J2367/02C08J2367/04
Inventor 路易斯·蒙西格尼迪鲍尔特·康塔特
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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