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A kind of polyester and preparation method thereof

A technology of polyester and hydroxyethyl isocyanurate, which is applied in the field of new polyester and its preparation, can solve the problems of single function and flammability of polyester film, and achieve improved light transmittance, easy operation, and high water The effect of contact angle

Active Publication Date: 2022-05-10
杭州临安煜中照明电器有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new type of polyester and its preparation method, which uses 2-hydroxyethyl isocyanurate, 3-tris Hydrocarbylsilyl-2,4-difluorobenzoic acid, chloroethanol, terephthalic acid and ethylene glycol were used as raw materials, and a new type of polyester material was obtained through multi-step reactions such as esterification, substitution, and polycondensation. At the same time, it has the properties of wear resistance, solvent resistance, high light transmittance, etc., which can effectively improve performance and enrich its application fields

Method used

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  • A kind of polyester and preparation method thereof
  • A kind of polyester and preparation method thereof
  • A kind of polyester and preparation method thereof

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Embodiment 1

[0036] Step 1) 1 part of hydroxyethylisocyanurate, 1.2 parts of 3-trihydrocarbylsilyl-2,4-difluorobenzoic acid (R is methyl), 0.01% part of 4-dimethylaminopyridine, 50 Put a portion of tetrahydrofuran in a three-necked flask, stir mechanically, heat and reflux for 20 hours, let stand, filter, distill the organic phase under reduced pressure, and dry in vacuum to obtain a colorless viscous liquid, that is, a fluorosilicone-modified isocyanurate derivative (IR: 3386cm -1 : -OH disappears; 1698cm -1 : Ester Ar-C=O exists; 1081cm -1 : C-F exists), denoted as A;

[0037] Step 2) Dissolve 1 part of A and 1 part of sodium hydroxide in 80 parts of water, heat the suspension to 90°C with vigorous stirring, and drop in 40 parts of water, 2 parts of sodium hydroxide and 4 parts of chloroethanol within 6 hours. The mixed cooling solution was left overnight, and then the solution was concentrated in vacuo, and the residual components were enriched. Add boiling N,N-dimethylformamide to ...

specific Embodiment 2-8

[0039] Specific embodiment 2-8, other are with specific embodiment 1, difference is following table:

[0040]

[0041] The polyester pellets obtained in specific example 1 were used as the base material of the application example, and it was made into a polyester film.

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Abstract

The invention belongs to the field of new materials. The present invention relates to a kind of novel polyester and preparation method thereof, this method uses 2-hydroxyethyl isocyanurate, 3-trihydrocarbyl silyl-2,4-difluorobenzoic acid, chloroethanol, terephthalic acid With ethylene glycol as a raw material, a new type of polyester material is obtained through multi-step reactions such as esterification, substitution, and polycondensation, and it is granulated and stretched into a film. The polyester film not only effectively solves the lack of flame retardancy of the current polyester film, but also has properties such as wear resistance, solvent resistance, and high light transmittance, effectively improving performance and enriching its application fields.

Description

technical field [0001] The present invention relates to a novel polyester and its preparation method. The invention belongs to the field of new materials. Background technique [0002] Polyethylene terephthalate film is a thermoplastic saturated polyester film material. Its surface is smooth and glossy, it has excellent mechanical properties in a wide temperature range, and its long-term use temperature can reach 120°C. It is widely used in electronics, packaging, electromagnetics and other fields. At present, especially in the fields of liquid crystal display and digital electronic materials, it is increasingly showing an irreplaceable role. [0003] As the polyester film with the most excellent comprehensive performance, optical grade polyester film not only has the properties of high strength and good toughness of ordinary polyester film, but also has no defects in appearance, low haze, high light transmittance and high cleanliness. advantages such as sex. Its product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/695C08G63/78C08L67/02C08J5/18
CPCC08G63/6956C08G63/78C08J5/18C08J2367/02
Inventor 李丹丹
Owner 杭州临安煜中照明电器有限公司
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