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High water resistance type water-soluble polyester material and preparation method thereof

A water-soluble polyester and water-based technology, applied in the field of water-soluble polyester materials and their preparation, can solve the problems of fixation of hydrophilic groups and inability to use, and achieves reduced use costs, extended effective time, and good environmental adaptability. Effect

Inactive Publication Date: 2018-01-26
宜昌中盈科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a highly water-resistant water-soluble polyester material, which is used to solve the existing water-soluble polyester material through the introduction of hydrophilic groups to achieve water-solubility, The existing hydrophilic groups are fixed and cannot be used in water and humid environments; at the same time, a method for preparing a high water-resistant water-soluble polyester material is proposed, which solves the problem of a high water-resistant water-soluble polyester material in the present invention. Production process problems of permanent polyester materials

Method used

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preparation example Construction

[0031] A preparation method of a highly water-resistant water-soluble polyester material, comprising the following steps:

[0032] (1) Esterification of raw materials: Mix and dissolve terephthalic acid or dimethyl terephthalate and ethylene glycol raw materials according to the formula, then pump them into the first esterification kettle, raise the temperature to 255°C and keep the temperature for esterification reaction , during the reaction process, the product of the first esterification tank enters the rectification tower for rectification, and produces fractions at the top of the rectification tower, and calculates the esterification rate of the esterification reaction in the first esterification tank according to the mass of the fractions and the total mass of raw materials , when the esterification rate reaches 97%, the esterification reaction is stopped, and the reactant is pressed into the second esterification tank with high-purity nitrogen containing less than 10 pp...

Embodiment 1

[0036] Take 59% of terephthalic acid and 27% of ethylene glycol according to the mass fraction ratio, mix them and pump them into the first esterification kettle, heat up to 255°C and keep 255±3°C for esterification reaction, during the reaction process, the first esterification kettle The product enters the rectification tower for rectification, and produces fractions at the top of the rectification tower. Calculate the esterification rate of the esterification reaction in the first esterification kettle according to the fraction mass and the total mass of raw materials. When the esterification rate reaches 97% , stop the reaction, and press the remaining reactants into the second esterification kettle with high-purity nitrogen containing oxygen less than 10ppm; get isophthalic acid-5-sodium sulfonate 7% to prepare a 40%wt esterification solution, add the second In the diesterification kettle, then take 5.68% of polyether, 0.1% of thiamine pyrophosphate and 0.2% of antioxidant...

Embodiment 2

[0038] Take 60.05% of terephthalic acid and 29% of ethylene glycol according to the mass fraction ratio, mix them and pump them into the first esterification tank, raise the temperature to 255°C and keep 255±3°C for esterification reaction, during the reaction process, the first esterification tank The product enters the rectification tower for rectification, and produces fractions at the top of the rectification tower. Calculate the esterification rate of the esterification reaction in the first esterification kettle according to the fraction mass and the total mass of raw materials. When the esterification rate reaches 97% , stop the reaction, press the remaining reactants into the second esterification kettle with high-purity nitrogen containing oxygen less than 10ppm; get 3.98% of isophthalic acid-5-sodium sulfonate to prepare a 40%wt esterification solution, add the first In the diesterification kettle, then take 5% of polyether, 0.15% of thiamine pyrophosphate and 0.3% of...

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Abstract

The invention provides a high water resistance type water-soluble polyester material. The material is prepared from 55%-82% of terephthalic acid, 24%-41% of ethylene glycol, 2.1%-9% of isophthalic acid-5-sodium sulfonate, 5%-12% of polyether, 0.3%-1.5% of an alcohol-based hydrolysis agent, 0.02% of a catalyst and 0.3%-0.8% of a compound stabilizer, wherein terephthalic acid can be replaced with dimethyl terephthalate, the catalyst is antimonous oxide CPC, and the compound stabilizer comprises TPP (thiamine pyrophosphate) and an antioxidant 1010 mixed in the mass ratio being 1:2. A polyester main chain comprises the easy-to-hydrolyze functional group alcohol-based hydrolysis agent, the alcohol-based hydrolysis agent is hydrolyzed after being dissolved in water, a hydrophobic group is obtained, so that polyester has water resistance again and is prevented from being dissolved again, and the use performance of the polyester material in water, outdoors and humid environments is improved.

Description

technical field [0001] The invention relates to the field of preparation of chemical raw materials, in particular to a water-soluble polyester material with high water resistance and a preparation method thereof. Background technique [0002] Polyester is a general term for polymers obtained by polycondensation of polyols and polyacids. It mainly refers to polyethylene terephthalate, and also includes linear thermoplastic resins such as polybutylene terephthalate and polyarylate. It is a kind of engineering plastic with excellent performance and wide application. Widely used in packaging, electronic appliances, medical and health, construction, automobile and other fields, polyester is also an important intermediate product connecting petrochemical products and products in multiple industries. [0003] Water-soluble polyester is one of the most widely used polyesters. Because it can be dissolved in water under certain conditions, it has extremely important functions in the...

Claims

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Application Information

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IPC IPC(8): C08G63/688C08G63/672
Inventor 王海波欧阳显康王启胜赵晨阳赵建华郑祥燕邹炬邓云
Owner 宜昌中盈科技发展有限公司
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