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A kind of synthetic method of ethylene glycol polyester plasticizer

A technology of polyester plasticizer and synthesis method, which is applied in the synthesis field of ethylene glycol polyester plasticizer, can solve the problems affecting the practical application performance of products and the softening of PVC materials, etc., and achieve good antistatic effect and product Excellent appearance and good compatibility

Active Publication Date: 2021-09-24
永椿化工新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the migration of such plasticizers will lead to a decrease in the flexibility of PVC materials and affect the actual application performance of the product.

Method used

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  • A kind of synthetic method of ethylene glycol polyester plasticizer
  • A kind of synthetic method of ethylene glycol polyester plasticizer
  • A kind of synthetic method of ethylene glycol polyester plasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 2KG of ethylene glycol and 4.26KG of 2-methylsuccinic acid into a 10L autoclave. Heating was started under the protection of nitrogen, the temperature in the kettle rose to 135° C., and stirring was started. Under the protection of nitrogen, 1.5 g of tetraisopropyl titanate was added, and the temperature was continuously raised to carry out the esterification reaction. When the pressure in the kettle reaches 11KG and the temperature in the kettle is 184-186°C, start to drain water until the pressure in the kettle drops to 0 (or nitrogen flow pressure), and it takes 45 minutes. The temperature was slowly raised to 195°C, and the water was drained under normal pressure for 10 minutes under the protection of nitrogen flow until no distillate was discharged.

[0033] Under the protection of nitrogen, the temperature in the kettle rose to 215°C. Turn on the vacuum device, depressurize and drain water under the condition of vacuum degree of 700Pa, further polycondensa...

Embodiment 2

[0035]Weigh 1.2KG of diethylene glycol, 2.2KG of tetraethylene glycol and 3.0KG of 2-methylsuccinic acid into a 10L autoclave. Heating was started under the protection of nitrogen, the temperature in the kettle rose to 135° C., and stirring was started. Under the protection of nitrogen, 1.5 g of tetraisopropyl titanate was added, and the temperature was continuously raised to carry out the esterification reaction. When the pressure in the kettle reaches 11KG and the temperature in the kettle is 184-186°C, start to drain water until the pressure in the kettle drops to 0 (or nitrogen flow pressure), and it takes 45 minutes. The temperature was slowly raised to 195°C, and the water was drained under normal pressure for 10 minutes under the protection of nitrogen flow until no distillate was discharged.

[0036] Under the protection of nitrogen, the temperature in the kettle rose to 215°C. Turn on the vacuum device, depressurize and drain water at a vacuum degree of 700Pa, furth...

Embodiment 3

[0038] Weigh 3.6KG of triethylene glycol and 3.17KG of 2-methylsuccinic acid into a 10L autoclave. Heating was started under the protection of nitrogen, the temperature in the kettle rose to 135° C., and stirring was started. Under the protection of nitrogen, 1.5 g of tetraisopropyl titanate was added, and the temperature was continuously raised to carry out the esterification reaction. When the pressure in the kettle reaches 11KG and the temperature in the kettle is 184-186°C, start to drain water until the pressure in the kettle drops to 0 (or nitrogen flow pressure), and it takes 45 minutes. The temperature was slowly raised to 195°C, and the water was drained under normal pressure for 10 minutes under the protection of nitrogen flow until no distillate was discharged.

[0039] Under the protection of nitrogen, the temperature in the kettle rose to 215°C. Turn on the vacuum device, depressurize and drain water at a vacuum degree of 700Pa, further polycondensate for 30 min...

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Abstract

The invention discloses a method for synthesizing an ethylene glycol polyester plasticizer. By controlling the temperature, pressure, time and other parameters of the reaction process, the glycol and the dibasic acid are polycondensed into ethylene glycol under the action of a catalyst. ester plasticizer. The polyester plasticizer has a molecular weight range of Mn=2800-3800 and a degree of polymerization of n=15-20. It is used as a low-temperature plasticizer for soft PVC sheets and has good compatibility and excellent thermal stability. It meets the basic requirements of plasticizers, has excellent tensile strength, elongation at break and softness at low temperature, and the obtained PVC products have good antistatic effect.

Description

technical field [0001] The invention relates to a method for synthesizing an ethylene glycol polyester plasticizer. [0002] technical background [0003] As one of the most widely used thermoplastic materials, PVC has the characteristics of low cost, good flame retardancy and electrical properties, and excellent chemical resistance. PVC can be widely used in medical equipment, electronic equipment, construction materials, infant care products, toys and food packaging and other fields. Generally speaking, a large amount of liquid plasticizer needs to be added during the processing of PVC products to increase the plasticity of the material. The most common liquid plasticizers are phthalates, which account for more than 80% of the products in the entire plasticizer industry. Among them, bis(2-ethylhexanoate) phthalate (DOP) is low in price and excellent in performance. Ortho-phthalic plasticizers account for at least 60%. However, studies have found that such monomeric plast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/16C08G63/672C08G63/85C08L27/06C08L67/02
CPCC08G63/16C08G63/672C08G63/85C08L27/06C08L2201/04C08L2201/08C08L67/02
Inventor 樊爱龙
Owner 永椿化工新材料有限公司
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