Preparation method of monobutyl ether alcohol terminated polyester plasticizer

A monobutyl ether alcohol and polyester plasticizer technology, applied in the field of polymer material additives, can solve the problem of poor compatibility between nonanol structure and plastic molecules, low molecular weight of polyester, poor plasticizing effect, etc. problems, to achieve the effect of improving the scope of application, overcoming poor stability, and good stability

Inactive Publication Date: 2016-04-20
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The polyester has high flexibility and stability, but the nonanol structure has poor compatibility with plastic molecules, and the polyester molecular weight prepared by this preparation method is not high, and the plasticizing effect is not good

Method used

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  • Preparation method of monobutyl ether alcohol terminated polyester plasticizer
  • Preparation method of monobutyl ether alcohol terminated polyester plasticizer
  • Preparation method of monobutyl ether alcohol terminated polyester plasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1 Take by weighing 236.2g succinic acid, 231.1g triethylene glycol, 2.34g stannous octoate and 37.4g toluene respectively and join in the esterification still of 1L, logical N 2 Protect, stir and heat up, when the toluene with water starts to reflux, start timing, the temperature of the effluent from the reflux gradually rises to 220°C, react for 8 hours, until no more water is produced, then add 222.2g of triethylene glycol monobutyl ether, and reflux to effluent When the temperature gradually rises to 220°C, continue to react for 6 hours, take samples to measure the acid value, when the measured acid value is 0.8mgKOH / g, cool down to 180°C, first extract the toluene under the vacuum degree of 2000Pa, then heat up to 210°C, The excess unreacted triethylene glycol monobutyl ether is distilled under reduced pressure at a vacuum degree of 500 Pa, and finally cooled and filtered to obtain a light amber liquid, which is triethylene glycol monobutyl ether-capped po...

Embodiment 2

[0023] Example 2 Weigh 250g of adipic acid, 129.7g of diethylene glycol, 0.38g of dibutyltin oxide and 4g of petroleum ether and add them to a 1L esterification kettle. 2 Protect, stir and heat up. When the petroleum ether starts to reflux with water, start timing, and the temperature of the effluent from the reflux gradually rises to 220 ° C. React for 6 hours until no more water is produced. Then add 198.2g of diethylene glycol monobutyl ether, from the reflux to The temperature of water gradually rises to 220°C, continue to react for 7 hours, take samples to measure the acid value, when the measured acid value is 0.9mgKOH / g, cool down to 180°C, extract petroleum ether at a vacuum degree below 2000Pa, and then heat up to 210°C , distill off excess unreacted diethylene glycol monobutyl ether under reduced pressure below 500 Pa, and finally cool and filter to obtain light amber liquid, which is diethylene glycol monobutyl ether-capped poly(diethylene glycol adipate) ) ester pl...

Embodiment 3

[0024] Example 3 Weigh 260g of glutaric acid, 347.5g of tetraethylene glycol, 0.3g of monobutyltin oxide and 9.1g of petroleum ether and add them to a 1L esterification kettle, and pass N 2 Protect, stir and heat up. When the petroleum ether starts to reflux with water, start timing. The temperature of the effluent from the reflux gradually rises to 220 ° C. React for 9 hours until no more water is produced. The temperature gradually rises to 220°C, and the reaction is continued for 5 hours. The acid value is measured by sampling. When the acid value is 0.7mgKOH / g, the temperature is lowered to 180°C, and the petroleum ether is first extracted at a vacuum degree of 2000Pa, and then the temperature is raised to 210°C. At a vacuum of 500Pa

[0025] Under reduced pressure, distill out excessive unreacted dipropylene glycol monobutyl ether, and finally cool and filter to obtain a light amber liquid, which is the poly(tetraethylene glycol glutarate) plasticizer terminated with dipr...

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Abstract

The invention discloses a preparation method of a monobutyl ether alcohol terminated polyester plasticizer in the field of polymer material additives. The preparation method mainly comprises the following steps that under the action of a water-carrying agent and a catalyst, an excessive amount of dicarboxylic acid and dihydric alcohol are subjected to condensation polymerization, and a terminal carboxyl group polyester is obtained; monobutyl ether alcohol is added into the reaction product, and esterification reaction termination is conducted; vacuum distillation is conducted, the water-carrying agent and an excessive amount of unreacted monobutyl ether alcohol are steamed out, and the monobutyl ether alcohol terminated polyester is obtained. The monobutyl ether alcohol terminated polyester plasticizer obtained through the preparation method has the advantages that low volatility of the polyester plasticizer is achieved, heat resistance is good, the low temperature flexibility is good, the durability and oil extraction resistance are achieved, the compatibility and flexibility of the monobutyl ether alcohol are achieved, the adjustability of viscosity is achieved, and the nontoxic and environment-friendly type plasticizer is suitable for polymer materials such as plastics, rubber and adhesives.

Description

technical field [0001] The invention relates to a preparation method of a polyester plasticizer in the field of polymer material additives, in particular to a preparation method of a monobutyl ether alcohol-terminated polyester plasticizer. Background technique [0002] Plasticizer is an important additive added to materials such as plastics, rubber, adhesives, coatings, and inks. It aims to increase the plasticity of polymer materials, improve their processing performance, lower their glass transition temperature, and increase their Flexibility and extensibility, etc. At present, the plasticizer products on the market are mainly phthalates, such as dibutyl phthalate, dihexyl phthalate, dioctyl phthalate, diisophthalate nonyl ester etc. This kind of plasticizer has been widely used because of its low cost and good comprehensive performance. However, since these phthalate plasticizers are low-molecular-weight compounds, they are volatile and easy to migrate, and most of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/12C08G63/16C08G63/46C08G63/672
CPCC08G63/12C08G63/16C08G63/46C08G63/672
Inventor 赵三平高俊赵慧
Owner WUHAN TEXTILE UNIV
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