Parallel and continuous preparation method for biodegradable resin

A technology of biodegradable resin and ester compound, applied in the field of polymer polymer resin, can solve the problems of sustainable development of human beings that affect the environment, difficult to decompose, etc., and achieve significant environmental and social benefits, good economic benefits, and flexible and diverse products.

Pending Publication Date: 2019-08-02
北京壹鼎壹管理咨询有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since general-purpose polymer materials such as plastics are derivatives of petroleum products and belong to organic hydrocarbons, they are difficult to decompose in the natural state, and their waste has become the source of "white pollution", which seriously affects the environment and One of the social problems of human sustainable development

Method used

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  • Parallel and continuous preparation method for biodegradable resin

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Such as figure 1 As shown, a method for preparing biodegradable resins in parallel, in which terephthalic acid (PTA) and 1,4-butanediol are prepared in a slurry tank at a molar ratio of 1:1.6 to make a slurry, which is passed through a delivery pump Send it into an esterification reactor at a flow rate of 681kg / H for esterification. The esterification temperature is controlled at 235°C and the pressure is controlled at an absolute pressure of 75kPa. During the esterification, 0.2kg of tetrabutyl titanate is continuously added to carry out The esterification reaction rate reaches over 92%;

[0038] In addition, at the same time, adipic acid and 1,4-butanediol are prepared into a slurry in the 2 slurry tank at a molar ratio of 1:1.4, which is sent to the 2 esterification reaction by a delivery pump at a flow rate of 745kg / H The esterification is carried out in the vessel, the esterification temperature is controlled at 180°C, the pressure is controlled at an absolute pre...

Embodiment 2

[0044] Such as figure 1 As shown, a method for preparing biodegradable resins in parallel, in which terephthalic acid (PTA) and 1,4-butanediol are prepared in a slurry tank at a molar ratio of 1:1.6 to prepare a slurry, which is passed through a delivery pump Send it into an esterification reactor at a flow rate of 650kg / H for esterification. The esterification temperature is controlled at 235°C and the pressure is controlled at an absolute pressure of 75kPa. During the esterification, 0.2kg of tetrabutyl titanate is continuously added to carry out The esterification reaction rate reaches over 92%;

[0045] In addition, at the same time, succinic acid and 1,4-butanediol are prepared into a slurry in the 2 slurry tank at a molar ratio of 1:1.6, which is sent to the 2 esterification reaction by a delivery pump at a flow rate of 800kg / H Esterification is carried out in the vessel, the esterification temperature is controlled at 145°C, the pressure is controlled at an absolute pr...

Embodiment 3

[0051] Such as figure 1 As shown, a method for preparing biodegradable resins in parallel and continuously, succinic acid (SA) and 1,4-butanediol are prepared into a slurry in a slurry tank at a molar ratio of 1:1.6, and the slurry is fed through a delivery pump to The flow rate of 1000kg / H is sent to 1 esterification reactor for esterification. The esterification temperature is controlled at 145°C and the pressure is controlled at an absolute pressure of 75kPa. During the esterification, 0.2kg of tetrabutyl titanate is continuously added to perform esterification. The chemical reaction rate reaches more than 92%;

[0052] In addition, at the same time, adipic acid and 1,4-butanediol are prepared into a slurry in the 2 slurry tank at a molar ratio of 1:1.4, which is sent to the 2 esterification reaction at a flow rate of 350kg / H through a delivery pump. Esterification is carried out in the vessel, the esterification temperature is controlled at 180°C, the pressure is controll...

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Abstract

The invention discloses a parallel and continuous preparation method for a biodegradable resin, which comprises the following specific steps: respectively and independently preparing a slurry A and aslurry B; respectively and continuously adding the slurry A and the slurry B in the step 1 into esterification reactors of respective units to implement an esterification reaction, and respectively preparing two esterification products; continuously feeding the two esterification products obtained in the step 2 into a mixing esterification reactor to have a mixing esterification reaction to obtaina mixing esterification product; continuously feeding the mixing esterification product obtained in the step 3 into a pre-polycondensation reactor to implement preliminary polycondensation; continuously feeding a prepolymer obtained in the step 4 into a final polycondensation reactor to implement periodical polycondensation; and continuously feeding a polymer with higher molecular weight obtainedin the step 5 into a tackifying reactor to further implement the polymerization reaction. The parallel continuous preparation method for the biodegradable resin can obtain multiple varieties, the products are flexible and diverse, and the demand of the market change and the demand of the national development are met.

Description

technical field [0001] The invention relates to the technical field of polymerized polymer resins, in particular to a method for preparing biodegradable resins in parallel and continuously. Background technique [0002] With the advancement of science and technology and the improvement of people's living standards, polymer materials, especially synthetic polymers, such as plastics and resins, are becoming more and more important in people's lives, and their applications are also showing a trend of expanding year by year. Synthetic polymer materials such as plastics and synthetic resins in the world have become the third most important materials after metal and cement. However, since general-purpose polymer materials such as plastics are derivatives of petroleum products and belong to organic hydrocarbons, they are difficult to decompose in the natural state, and their waste has become the source of "white pollution", which seriously affects the environment and One of the so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/78
CPCC08G63/183C08G63/78
Inventor 卢海英王金月白丁贾振宇
Owner 北京壹鼎壹管理咨询有限公司
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