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Preparation method for differentiated PTA

A differentiated and oxidized stone technology, applied in the preparation of organic compounds, chemical instruments and methods, carboxylate preparation, etc., can solve the problems of not considering special materials, single PTA products, etc., and achieve excellent fusion effect and long action time , the effect of long interaction time

Inactive Publication Date: 2018-08-10
ZHEJIANG MODERN TEXTILE IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The key and core of modified polyester and its products is modified PTA, and in the existing literature, the preparation of PTA is mainly considered from the purification process, that is, to reduce the content of impurities such as p-carboxybenzaldehyde, and reduce the PTA in the subsequent process. The impact of this impurity on the reaction in the polycondensation reaction has hardly been considered through the development of some new PTA varieties to be applied to some special materials, such as the preparation of modified materials with special functions, etc.
Therefore, the PTA product has always been single and almost unchanged

Method used

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  • Preparation method for differentiated PTA

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Effect test

Embodiment 1

[0064] A preparation method of differential PTA, comprising the steps of:

[0065](1) by mass fraction, the bismuth molybdate of 0.8 part, the graphene oxide of 0.9 part, 12 parts of mass fractions are the hypochlorous acid aqueous solution of 2%, the zinc oxide of 0.4 part, the white carbon black of 0.4 part, 0.25 Add 9 parts of conductive potassium titanate whiskers to 9 parts of hydrofluoric acid aqueous solution with a mass fraction of 5%, mix them, grind them at 50°C for 3.5 hours with a high-energy ball mill, and then move them to a hydrothermal reaction kettle lined with titanium. Then, treat it at 165°C and 3MPa for 10h, cool and filter, calcinate at 540°C for 4.5h, cool to room temperature, grind in a ball mill for 2.5h, move to a stirred plasma reactor, and use nitrogen as a carrier gas , carry out radio frequency plasma treatment at 50Pa, 50W power for 7min, then add 10 parts of organic silicon ethanol solution with a mass fraction of 30%, ultrasonically disperse at...

Embodiment 2

[0071] A preparation method of differential PTA, comprising the steps of:

[0072] (1) by mass fraction, the bismuth molybdate of 0.7 part, the graphene oxide of 1 part, 15 parts of mass fractions are the hypochlorous acid aqueous solution of 2%, the zinc oxide of 0.3 part, the white carbon black of 0.5 part, 0.3 Add 8 parts of conductive potassium titanate whiskers to 8 parts of hydrofluoric acid aqueous solution with a mass fraction of 5%, mix them, grind them at 45°C for 4 hours with a high-energy ball mill, and then move them into a hydrothermal reaction kettle lined with titanium. , and then treated at 150°C and 4MPa for 12h, cooled and filtered, calcined at 550°C for 4h, cooled to room temperature, then ground in a ball mill for 3h, moved to a stirred plasma reactor, and used nitrogen as a carrier gas at 55Pa , Carry out radio frequency plasma treatment at 40W power for 6min, then add to 12 parts of organic silicon ethanol solution with a mass fraction of 30%, ultrasonic...

Embodiment 3

[0078] A preparation method of differential PTA, comprising the steps of:

[0079] (1) by mass fraction, the bismuth molybdate of 1 part, the graphene oxide of 0.7 part, 10 parts of mass fractions are the hypochlorous acid aqueous solution of 2%, the zinc oxide of 0.5 part, the white carbon black of 0.3 part, 0.2 Add 10 parts of conductive potassium titanate whiskers to 10 parts of hydrofluoric acid aqueous solution with a mass fraction of 5% and mix them with a high-energy ball mill at 55°C for 3 hours, and then move them to a titanium-lined hydrothermal reaction kettle , and then treated at 180°C and 2MPa for 8h, cooled and filtered, calcined at 530°C for 5h, cooled to room temperature, then ground in a ball mill for 2h, moved to a stirred plasma reactor, with nitrogen as the carrier gas, at 45Pa , Carry out radio frequency plasma treatment at 60W power for 8min, then add to 8 parts of organic silicon ethanol solution with a mass fraction of 30%, ultrasonically disperse at 5...

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Abstract

The invention provides a preparation method for differentiated pure terephthalic acid (PTA). The method comprises the following steps: (1) mixing bismuth molybdate, graphene oxide, a hypochlorous acidaqueous solution, zinc oxide, white carbon black, potassium titanate crystal whiskers and a hydrofluoric acid aqueous solution, performing grinding, performing a hydrothermal reaction, performing filtration, performing calcination, performing plasma treatment, and performing organic-silicone modification to obtain a special anti-aging agent; and (2) mixing acetic acid and water, then adding sodium hexametaphosphate aqueous solution, nickel fluoroborate, calcium tungstate and the special anti-aging agent obtained in the step (1), performing beating dispersion to obtain a special modifying liquid, fusing the special modifying liquid and crude terephthalic acid slurry, performing crystallization, performing solid-liquid separation, performing washing, performing drying, performing beating, performing solid-liquid separation, and performing hydrofining to prepare the differentiated PTA. According to the preparation method provided by the invention, the product prepared by the method has asignificant anti-aging effect.

Description

technical field [0001] The invention belongs to the technical field of PTA variety development, and in particular relates to a preparation method of differentiated PTA. Background technique [0002] PTA is purified terephthalic acid. It is a bulk chemical industry raw material. Its application is relatively concentrated. More than 90% of PTA in the world is used to produce polyethylene terephthalate, and the rest is used to produce polyethylene terephthalate. Synthetic materials such as propylene glycol phthalate and polybutylene terephthalate. These synthetic materials have excellent properties, such as high initial modulus, good strength, high elasticity, good shape retention and heat resistance, etc., and are widely used in people's life and industrial production, such as making clothes, beverage bottles, packaging Films, profiles, etc. can also be used outdoors, such as advertising light box cloth, tarpaulin cloth, etc. These synthetic materials need to withstand the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/78C08K13/06C08K9/06C08K9/00C08K9/04C08K3/24C08K3/04C08K3/22C08K3/36C08K7/08D01F6/92D01F1/10C07C63/26C07C51/42C07C51/43C07C51/487
Inventor 范艳苹陶仁中韩文娟胡超杨晓静
Owner ZHEJIANG MODERN TEXTILE IND RES INST
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