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Preparation method of isocyanurate polyether polyol

A technology of isocyanurate and polyether polyols, which is applied in the field of preparation of isocyanurate polyether polyols, can solve the problem of inability to meet chromaticity requirements and deep chromaticity of isocyanurate polyether polyols and other problems, to achieve the effect of preventing explosion, good UV curing performance and good catalytic effect

Active Publication Date: 2019-11-01
JIAHUA CHEM TECH DEV SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved in the present invention is to overcome the defect that the isocyanurate polyether polyol prepared in the prior art has a darker chroma and cannot meet the requirements for the chroma of monomer raw materials in UV curing, thereby providing a The obtained isocyanurate polyether polyol has a light chroma, can meet the requirements for the chroma of monomer raw materials in UV curing, and is a preparation method of an isocyanurate polyether polyol that is safe and easy to control.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a kind of preparation method of isocyanurate polyether polyol, comprising,

[0032]S1. Mix 550 g of tris(2-hydroxyethyl) isocyanurate initiator and 0.36 g of potassium hydroxide catalyst, replace with nitrogen, remove residual air, and make the oxygen content <50 ppm to obtain the initial mixture.

[0033] S2. Add 27.5g ethylene oxide (5% of the initiator) dropwise to the initial mixture at 15°C, and slowly heat up while carrying out solid-liquid reaction, the initiator melts gradually, and the temperature of the solid-liquid reaction is controlled to be no more than 110°C, the control pressure is ≤0.40MPa, and the primary reaction product is obtained after the reaction is completed.

[0034] S3, add 255.5g ethylene oxide to the primary reaction product to carry out gas-liquid reaction, control the gas-liquid reaction temperature to be 150°C, carry out aging at the reaction temperature until the pressure does not drop, then add 370g propylene ox...

Embodiment 2

[0038] This embodiment provides a kind of preparation method of isocyanurate polyether polyol, comprising,

[0039] S1. In a 2L reactor, mix 596g of tris(2-hydroxyethyl)isocyanurate initiator with 0.6g of sodium hydroxide catalyst, replace with nitrogen, and remove residual air in the kettle to make the oxygen content <50ppm , to get the initial mixture.

[0040] S2. Add 48g ethylene oxide (8% of initiator) dropwise to the initial mixture at 20°C, slowly heat up, and carry out solid-liquid reaction, the initiator melts gradually, and the solid-liquid reaction temperature is controlled to be no more than 110 °C, the control pressure is ≤0.40MPa, and the primary reaction product is obtained after the reaction is completed.

[0041] S3, add 556g ethylene oxide to the primary reaction product to carry out gas-liquid reaction, control the gas-liquid reaction temperature to be 120°C, carry out aging at the reaction temperature until the pressure does not drop, then add 370g propyle...

Embodiment 3

[0045] This embodiment provides a kind of preparation method of isocyanurate polyether polyol, comprising,

[0046] S1. In a 2L reactor, mix 550g of tris(2-hydroxyethyl)isocyanurate initiator with 1.8g of potassium methylate catalyst, replace with nitrogen, remove residual air in the kettle, make the oxygen content <50ppm, to obtain the initial mixture.

[0047] S2, at 30 DEG C, dropwise add the mixture (10% of initiator) of 55g ethylene oxide, propylene oxide in initial mixture, slowly heat up while carrying out solid-liquid reaction, initiator melts gradually, controls solid The liquid reaction temperature does not exceed 110°C, the control pressure is ≤0.40MPa, and the primary reaction product is obtained after the reaction is completed.

[0048] S3. Add 590g of a mixture of ethylene oxide and propylene oxide to the primary reaction product for gas-liquid reaction, control the gas-liquid reaction temperature to 120°C, carry out aging at the reaction temperature until the p...

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Abstract

The invention provides a preparation method of isocyanurate polyether polyol. The preparation method comprises the steps: (1) mixing an initiator tris(2-hydroxyethyl)isocyanurate with a catalyst so asto obtain an initial mixture; (2) adding an epoxy compound to the initial mixture dropwise, and performing heating for a solid-liquid reaction so as to obtain a primary reaction product; (3) adding the epoxy compound to the primary reaction product continuously, and performing a gas-liquid reaction so as to obtain a secondary reaction product; and (4) cooling the secondary reaction product so asto obtain the isocyanurate polyether polyol, wherein the temperature of the solid-liquid reaction is not more than 110 DEG C, and darker color, caused by local overheating, of the final product is avoided through control on the temperature of the solid-liquid reaction at not more than 110 DEG C, so that the reaction is safe and controllable, and the energy consumption and cost are reduced.

Description

technical field [0001] The invention relates to the technical field of polyether polyol synthesis, in particular to a preparation method of isocyanurate polyether polyol. Background technique [0002] Ultraviolet (UV) curing is a material surface treatment technology. It uses ultraviolet light to trigger rapid polymerization and crosslinking of chemically active liquid materials, and instantly solidifies them into solid materials. Compared with thermal curing, UV curing has no VOC release. Energy saving, high production efficiency and so on. The main components of UV curing system include oligomers, monomers and photoinitiators. The monomer, also known as reactive diluent or multifunctional acrylate, is an important part of the UV curing formula. It not only adjusts the viscosity but also acts as a film-forming substance, which has a significant impact on the final performance of the coating. Isocyanurate polyether polyols can be used in the preparation of UV curing monome...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28
CPCC08G65/2618C08G65/2696
Inventor 季小婷魏会关永坚李玉博
Owner JIAHUA CHEM TECH DEV SHANGHAI CO LTD
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