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Polyethylene terephthalate-1,4-cyclohexandiol ester for optical thin film
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A technology of polyethylene terephthalate and cyclohexanediol, which is applied in the field of copolyester and can solve the problems of high production cost, high energy consumption, and large water ratio
Inactive Publication Date: 2012-06-06
TORAY FIBER RES INST(CHINA) CO LTD
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Problems solved by technology
At present, the industrial production method of ethylene glycol is mainly the direct hydration method of ethylene oxide. Although the process is mature, it has a large water ratio, high energy consumption and high production cost.
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Embodiment 1
[0038] Same as the comparative example 1 device, ethylene glycol is replaced by biological source ethylene glycol, and the addition amount of other raw materials and catalysts is kept constant, and the esterification and polycondensation reactions are completed in the same temperature range, and the polycondensate of the present invention is obtained. Products of ethylene glycol terephthalate-1,4-cyclohexanediol ester. The addition amount relative to copolyester weight is:
[0039] The addition amount of titanium element in titanium compound is 5ppm
[0040] The amount of phosphorus added in the phosphorus compound is 13ppm
[0041] The amount of magnesium added in the magnesium compound is 40ppm
Embodiment 2
[0043] Same as the comparative example 2 device, ethylene glycol is replaced by biological source ethylene glycol, and the addition amount of other raw materials and catalysts is kept constant, and the esterification and polycondensation reactions are completed in the same temperature range, and the polycondensate of the present invention is obtained. Products of ethylene glycol terephthalate-1,4-cyclohexanediol ester. The addition amount relative to copolyester weight is:
[0044] The addition amount of titanium element in the antimony compound is 110ppm
[0045] The amount of phosphorus added in the phosphorus compound is 13ppm
[0046] The amount of magnesium added in the magnesium compound is 40ppm
Embodiment 3
[0048] Same as the comparative example 3 device, ethylene glycol is replaced by biological source ethylene glycol, and the addition amount of other raw materials and catalysts is kept constant, and the esterification and polycondensation reactions are completed in the same temperature range, and the polycondensate of the present invention is obtained. Products of ethylene glycol terephthalate-1,4-cyclohexanediol ester. The addition relative to copolyester weight is:
[0049] The addition amount of titanium element in the germanium compound is 15ppm
[0050] The amount of phosphorus added in the phosphorus compound is 13ppm
[0051] The amount of magnesium added in the magnesium compound is 40ppm
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Abstract
The invention discloses a polyethylene terephthalate-1,4-cyclohexandiol ester for an optical thin film, which is prepared by ester exchange or esterification and polycondensation reaction of three monomers, namely terephthalic acid, ethylene glycol and 1,4-cyclohexandiol. The polyethylene terephthalate-1,4-cyclohexandiol ester is characterized in that the carbon element which is ethylene glycol of the raw material is sourced from biological materials. The carbon element component in the dibasic alcohol component in the raw materials is sourced from the biological materials, thereby greatly reducing the emission of CO2 generated by petroleum refining.
Description
Technical field: [0001] The present invention relates to a copolyester. Background technique: [0002] Since the reform and development, China's economic development has entered the fast lane, but with the rapid economic development, the human living environment has been deteriorating day by day. People are paying more and more attention to the development and use of environmentally friendly materials and the use of renewable materials. Raw materials, biodegradable materials, etc. Petroleum resources, as non-renewable resources, are the most important chemical raw materials, but due to the large amount of CO in use engineering and final waste 2 emissions, CO 2 A large amount of emissions has led to a series of problems such as global warming and the greenhouse effect, and directly threatens the survival of human beings. How to replace and reduce the use of petroleum as a raw material has become one of the important research issues people are facing. [0003] Polyethylene...
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