A kind of hydroxyl polyester resin prepared based on Tgic by-product and preparation method

A technology of hydroxy polyester resin and by-products, applied in the field of hydroxy polyester resin, can solve the problems of low-end products and insufficient added value, and achieve the effects of excellent water resistance, enhanced fluidity, and high cross-linking density

Active Publication Date: 2021-03-26
HUANGSHAN HUAHUI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is to provide a kind of hydroxyl polyester resin prepared based on TGIC by-products so that TGIC by-products can be used to prepare high-end product systems and products with high final added value, to solve the problem of TGIC by-products in the prior art. Problems such as low-end products and insufficient added value

Method used

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  • A kind of hydroxyl polyester resin prepared based on Tgic by-product and preparation method
  • A kind of hydroxyl polyester resin prepared based on Tgic by-product and preparation method
  • A kind of hydroxyl polyester resin prepared based on Tgic by-product and preparation method

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Embodiment 1

[0029] The hydroxyl polyester resin prepared based on the TGIC by-product described in this embodiment includes the raw material monomers of the following molar content in terms of the total amount of raw materials for its preparation:

[0030]

[0031] The preparation method of hydroxyl polyester resin described in the present embodiment, comprises the steps:

[0032] (1) Add the TGIC by-product and dimethyl adipate in the above formula into the reactor, slowly raise the temperature of the reactor, and gradually raise the temperature from 60°C to 100°C at a heating rate of 20°C / h and keep it warm for reaction 2h, then start the vacuum to carry out the decompression reaction for 1-3h, and stop the reaction when the viscosity of the reaction system reaches 500-700mPa·s / 180°C;

[0033] (2) Then add the terephthalic acid and diethanolamine in the formula amount to the above-mentioned mixed material, under the protection of nitrogen, gradually raise the temperature to 200°C at ...

Embodiment 2

[0038] The hydroxyl polyester resin prepared based on the TGIC by-product described in this embodiment includes the raw material monomers of the following molar content in terms of the total amount of raw materials for its preparation:

[0039]

[0040] The preparation method of hydroxyl polyester resin described in the present embodiment, comprises the steps:

[0041](1) Add the TGIC by-products and dimethyl adipate in the above formula into the reactor, slowly raise the temperature of the reactor, and gradually raise the temperature from 60°C to 120°C at a rate of 20°C / h and keep it warm for reaction 2h, then start the vacuum to carry out the decompression reaction for 1-3h, and stop the reaction when the viscosity of the reaction system reaches 500-700mPa·s / 180°C;

[0042] (2) Then add the terephthalic acid and diethanolamine in the formula amount to the above-mentioned mixed material, under the protection of nitrogen, gradually raise the temperature to 220°C at a heatin...

Embodiment 3

[0047] The hydroxyl polyester resin prepared based on the TGIC by-product described in this embodiment includes the raw material monomers of the following molar content in terms of the total amount of raw materials for its preparation:

[0048]

[0049] The preparation method of hydroxyl polyester resin described in the present embodiment, comprises the steps:

[0050] (1) Add the TGIC by-products and dimethyl adipate in the above formula into the reactor, raise the temperature of the reactor slowly, and gradually raise the temperature from 60°C to 110°C at a rate of 20°C / h and keep it warm for reaction 2h, then start the vacuum to carry out the decompression reaction for 1-3h, and stop the reaction when the viscosity of the reaction system reaches 500-700mPa·s / 180°C;

[0051] (2) Then add the terephthalic acid and diethanolamine in the formula amount to the above mixed material, under the protection of nitrogen, gradually raise the temperature to 210°C at a heating rate of...

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Abstract

The invention belongs to the technical field of powder coatings, in particular relates to hydroxyl polyester resin prepared based on TGIC byproducts, and further discloses a preparation method thereof. Based on the TGIC byproducts generated in the traditional TGIC production process as recycled raw materials, the hydroxyl polyester resin usable for the powder coatings is prepared through polymerization reaction of dimethyl adipate, terephthalic acid, diethanolamine and sorbitol. The obtained hydroxyl polyester has higher functionality. After curing with polyurethane B1530 curing agent, a coating film with higher hardness can be obtained; due to high crosslinking density and excellent water resistance, the comprehensive performance fully meets the requirements of the powder coatings, a comprehensive utilization method with high added value for the TGIC by-products is provided, and the problem of low comprehensive utilization degree of the TGIC by-products can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of powder coatings, in particular relates to a hydroxyl polyester resin prepared based on TGIC by-products, and further discloses a preparation method thereof. Background technique [0002] Triglycidyl isocyanurate, also known as tris (2,3-epoxypropyl) isocyanurate, referred to as TGIC, commonly known as "Bick", is an important cyanuric acid derivative. Since TGIC has three highly active epoxy groups and the triazine ring is also very stable, TGIC not only has the physical and chemical properties of general epoxy resins, but also can be cured with amines, carboxylic acids, phenolic aldehydes, acid anhydrides, resins, etc. It can also produce cross-linked infusibles, and the curing reaction speed is faster; and compared with the usual epoxy resin, TGIC has low epoxy equivalent, small molecular weight, high epoxy value, and has a more Good weather resistance, heat resistance, and adhesion, so TGIC has a very ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/685C08G63/78C09D175/06C09D5/03
CPCC08G63/6854C08G63/78C09D5/03C09D175/06
Inventor 杨志萍林光伟汤增荣项纯王永垒汪泽军
Owner HUANGSHAN HUAHUI TECH
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