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Method for preparing biological ethylene glycol with good light transmission

A light transmittance and ethylene glycol technology, which is applied in fermentation and other directions, can solve the problems affecting the use of polyester, the color of polyester turns yellow, and the smell is strong

Inactive Publication Date: 2009-09-09
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dacheng's bio-ethylene glycol is slightly yellow and has a special smell without heating, but it will turn into a yellow liquid with a relatively strong smell after heating, so when the bio-ethylene glycol is used in the production of polyester Due to the high temperature polymerization, the yellow substance in the bioethylene glycol is brought into the polyester, which makes the color of the polyester yellow and affects the application field of the polyester.

Method used

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  • Method for preparing biological ethylene glycol with good light transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] With the device of Comparative Example 1, ethylene glycol was replaced with bio-ethylene glycol after activated carbon treatment in Scheme 1, and other raw materials, catalysts and additions remained unchanged, and the esterification reaction and polycondensation reaction were completed in the same temperature range, and were used The polyester chips prepared by the bio-ethylene glycol of the present invention are pelletized for subsequent use.

Embodiment 2

[0046] With the device of Comparative Example 1, ethylene glycol was replaced with bio-ethylene glycol after activated carbon treatment in Scheme 2, and other raw materials, catalysts and additions remained unchanged, and the esterification reaction and polycondensation reaction were completed in the same temperature range, and it was used The polyester chips prepared by the bio-ethylene glycol of the present invention are pelletized for subsequent use.

Embodiment 3

[0048] Same as the device in Comparative Example 1, ethylene glycol was replaced with bio-ethylene glycol after activated carbon treatment in Scheme 3, other raw materials, catalysts and additions remained unchanged, esterification reaction and polycondensation reaction were completed in the same temperature range, and it was used The polyester chip that biological ethylene glycol of the present invention makes, dices for subsequent use

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Abstract

The invention discloses a method for preparing biological ethylene glycol with good light transmission. The method is characterized in that biological materials are processed to obtain the ethylene glycol, and the ethylene glycol is heated and filtered by active carbon to obtain the product. The light transmission rate of the product in a wavelength range of between 190 and 350 nm is over 50 percent. The ethylene glycol biologically sourced takes the biological materials such as corn, wheat, stalk, and the like as the raw materials, thereby reducing the cost of polyester products and reducing the emission of CO2 in the preparation process.

Description

Technical field: [0001] The invention relates to a method for producing bioethylene glycol. Background technique: [0002] In recent years, with the deterioration of the human living environment, people pay more and more attention to the development of environmentally friendly materials and the use of renewable raw materials. Petroleum, as a non-renewable resource, is the most important chemical raw material. However, due to the large amount of CO2 emissions in the use of engineering and final waste, the large amount of CO2 emissions has led to a series of problems such as global warming, and directly threatens the survival of human beings. How to replace and reduce the use of petroleum as raw materials is one of the important research issues facing people. [0003] People use renewable biological resources to develop various new polyesters. For example, DuPont has prepared 1,3-PDO (1,3-propanediol) by fermenting corn through biological and chemical processes, and developed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/18
Inventor 盛思义李旭本田圭介
Owner TORAY IND INC