Preparation method of polyester plasticizer

A technology of polyester plasticizer and polycarbonate, applied in the field of plastic additives, can solve problems such as interference with human endocrine, damage to reproduction and development, and small molecular weight, and achieve the effects of high molecular weight, good extraction resistance, and low viscosity

Inactive Publication Date: 2017-04-05
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small molecular weight of phthalate plasticizers, they are easy to migrate, and this substance can interfere with human endocrine, damage reproduction and development, and are teratogenic and carcinogenic

Method used

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  • Preparation method of polyester plasticizer
  • Preparation method of polyester plasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) dry monomer

[0037] The epoxy compound was mixed with CaH at room temperature 2 Mix and stir, evaporate under reduced pressure, degas three times to remove oxygen, and then store under anhydrous and oxygen-free conditions. The purity of the carbon dioxide used is 99.99%. Before the reaction, the gas is passed through a purification column for removing water and oxygen, and then passes into the reaction system.

[0038] (2) Synthesis of polycarbonate

[0039] Add 40mg of catalyst (zinc cobalt cyanide complex, ligand is tert-butanol, ultrasonic power 50W, time 60s) into the cleaned autoclave, then vacuum dry at 80°C for 12h, then cool to room temperature. Add treated 80mL propylene oxide under negative pressure conditions, pass in a certain pressure of carbon dioxide under stirring conditions, then heat to 60°C, adjust the pressure of the amount of carbon dioxide added to 4.0MPa, react for 12 hours, cool down, and release the unreacted in the kettle carbon dioxide...

Embodiment 2

[0041] (1) dry monomer

[0042] The epoxy compound was mixed with CaH at room temperature 2 Mix and stir, evaporate under reduced pressure, degas three times to remove oxygen, and then store under anhydrous and oxygen-free conditions. The purity of the carbon dioxide used is 99.99%. Before the reaction, the gas is passed through a purification column for removing water and oxygen, and then passes into the reaction system.

[0043] (2) Synthesis of polycarbonate

[0044] Add 10 mg of catalyst (same as Example 1) into the cleaned autoclave, then vacuum dry at 80° C. for 12 h, and then cool to room temperature. Add treated 30mL propylene oxide under negative pressure conditions, pass in a certain pressure of carbon dioxide under stirring conditions, then heat to 70°C, adjust the pressure of carbon dioxide addition to 5.0MPa, react for 6 hours, cool down, and release the unreacted in the kettle carbon dioxide, the crude product was dissolved, precipitated, filtered, and dried t...

Embodiment 3

[0046] (1) dry monomer

[0047] The epoxy compound was mixed with CaH at room temperature 2Mix and stir, evaporate under reduced pressure, degas three times to remove oxygen, and then store under anhydrous and oxygen-free conditions. The purity of the carbon dioxide used is 99.99%. Before the reaction, the gas is passed through a purification column for removing water and oxygen, and then passes into the reaction system.

[0048] (2) Synthesis of polycarbonate

[0049] Add 12.5 g of catalyst (same as Example 1) into the cleaned autoclave, then vacuum dry at 80° C. for 12 h, and then cool to room temperature. Add treated 30mL propylene oxide under negative pressure conditions, pass in a certain pressure of carbon dioxide under stirring conditions, then heat to 30°C, adjust the pressure of carbon dioxide addition to 8.0MPa, react for 10 hours, cool down, and release the unreacted in the kettle carbon dioxide, the crude product was dissolved, precipitated, filtered, and dried ...

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Abstract

The invention belongs to the technical field of plastic additives and particularly relates to a preparation method of a polyester plasticizer. In a high-pressure reaction kettle, with a bi-metal cyanide complex prepared through an ultrasonic method as a catalyst, CO2 and an epoxy compound are subjected to a catalytic copolymerization reaction to synthesize polycarbonate. The preparation method has wide selection range and wide source of raw material and can effectively reduce production cost. The polycarbonate has a transparent appearance and low viscosity, and can satisfy the demands on plasticizers in PVC processing. The polycarbonate is higher than a conventional monomer-type phthalate plasticizer in molecular weight, and has excellent extraction resistance and thermal stability.

Description

technical field [0001] The invention belongs to the technical field of plastic additives, and in particular relates to a preparation method of a polyester plasticizer. Background technique [0002] At present, phthalates are the most widely used PVC plasticizers with the best performance. The global annual consumption of phthalate plasticizers exceeds 3 million tons. Domestic plastic companies also rely heavily on phthalate plasticizers, of which dioctyl phthalate (DOP) and diisononyl phthalate (DINP) account for the total amount of plasticizers used. 80% of. However, due to the small molecular weight of phthalate plasticizers, they are easy to migrate, and the substances can interfere with human endocrine, damage reproduction and development, and are teratogenic and carcinogenic. Therefore, the European Union's ROHS directive was officially implemented on July 1, 2006, which strictly restricted the use of phthalate plasticizers. Contents of the invention [0003] The p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G64/34C08L27/06C08L69/00
Inventor 李留忠张荣召鲍春伟严婕达建文
Owner CHINA PETROLEUM & CHEM CORP
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