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Method for preparing biological ethylene glycol with good light transmission

A technology of light transmittance and ethylene glycol, applied in the direction of fermentation, etc., can solve problems such as affecting the application field of polyester, strong odor, and yellowing of polyester hue.

Inactive Publication Date: 2012-09-26
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Same as the device of Comparative Example 1, the ethylene glycol is replaced with bio-ethylene glycol after activated carbon treatment in Scheme 1, and other raw materials, catalysts and addition amount remain unchanged. The esterification reaction and polycondensation reaction are completed within the same temperature range, and they are used The polyester chips prepared by the bio-ethylene glycol of the present invention are cut into pellets for later use.

Embodiment 2

[0046] Same as the device of Comparative Example 1, the ethylene glycol is replaced with bio-ethylene glycol after the activated carbon treatment in Scheme 2, and the other raw materials, catalysts and addition amount remain unchanged, and the esterification reaction and polycondensation reaction are completed within the same temperature range and used The polyester chips prepared by the bio-ethylene glycol of the present invention are cut into pellets for later use.

Embodiment 3

[0048] Same as the device of Comparative Example 1, the ethylene glycol is replaced with bio-ethylene glycol after the activated carbon treatment in Scheme 3. The other raw materials, catalysts and addition amount remain unchanged, and the esterification reaction and polycondensation reaction are completed within the same temperature range and used The polyester chips prepared by the bio-ethylene glycol of the present invention are cut into pellets for later 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 manufacturing method of bio-ethylene glycol. Background technique: [0002] In recent years, as the human living environment has deteriorated, people have paid more and more attention to the development of environmentally friendly materials and the use of renewable raw materials. As a non-renewable resource, petroleum is the most important chemical raw material. However, due to the large amount of CO2 emissions in the use of engineering and final disposal, the large amount of CO2 emissions have led to a series of problems such as global warming, and directly threaten the survival of mankind. How to replace and reduce the use of petroleum as a raw material is one of the important research issues that people face. [0003] People use renewable biological resources to develop a variety of new polyesters. For example, DuPont has produced 1,3-PDO (1,3-propanediol) by fermenting corn, going through biological and chemical processes, and...

Claims

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Application Information

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