Preparation method of ultraviolet absorbent tribenzotriazole isocyanurate

A technology of isocyanuric acid tris and benzotriazoles, applied in chemical instruments and methods, physical/chemical process catalysts, organic chemistry, etc., can solve the problems of late start, limited varieties, high cost, etc., and increase the load capacity. , the effect of improving yield and improving conversion rate

Active Publication Date: 2016-02-24
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because solid base is a new type of catalyst, it started relatively late, especially in the preparation of solid base. The preparation process requires very fine and expensive costs. At present, the variety of solid base catalysts actually used in industrial production is still very limited.

Method used

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  • Preparation method of ultraviolet absorbent tribenzotriazole isocyanurate
  • Preparation method of ultraviolet absorbent tribenzotriazole isocyanurate
  • Preparation method of ultraviolet absorbent tribenzotriazole isocyanurate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] One, Al2O3 carrier solid base catalyst and preparation method through the following steps:

[0029] (a). Chemical composition: 750 parts of deionized water, 15 parts of calcium chloride, 25 parts of magnesium chloride, 3 parts of nano strontium titanate, 100 parts of 25% ammonia water, 30 parts of nano aluminum oxide, 3% ammonium molybdate 20 parts of aqueous solution, 5 parts of potassium carbonate, 1.5 parts of magnesium silicide;

[0030] (b). Dissolve calcium chloride and magnesium chloride into 250 parts of deionized water, add 500 parts of deionized water into the reaction kettle, add nano-aluminum oxide and nano-strontium titanate, and turn on the high-speed disperser at 1500 rpm / Dilute the ammonia water to 250 parts with deionized water, control the temperature of all the solutions at 10°C, then add calcium chloride, magnesium chloride solution and ammonia water to the reaction kettle dropwise at the same time, and drop them in 10 minutes. Stir at high speed f...

Embodiment 2

[0037] One, Al2O3 carrier solid base catalyst and preparation method through the following steps:

[0038] (a). Chemical composition: 750 parts of deionized water, 25 parts of calcium chloride, 15 parts of magnesium chloride, 5 parts of nano strontium titanate, 50 parts of 25% ammonia water, 50 parts of nano aluminum oxide, 3% aqueous solution of ammonium molybdate 10 parts, 10 parts of potassium carbonate, 0.5 parts of magnesium silicide;

[0039] (b). Dissolve calcium chloride and magnesium chloride into 250 parts of deionized water, add 500 parts of deionized water into the reaction kettle, add nano-aluminum oxide and nano-strontium titanate, and turn on the high-speed disperser at 2000 rpm / Dilute ammonia water to 250 parts with deionized water, control the temperature of all solutions at 20°C, then add calcium chloride, magnesium chloride solution and ammonia water to the reaction kettle dropwise at the same time, and complete the dropwise addition within 20 minutes. Sti...

Embodiment 3

[0046] One, Al2O3 carrier solid base catalyst and preparation method through the following steps:

[0047](a). Chemical composition: 750 parts of deionized water, 20 parts of calcium chloride, 20 parts of magnesium chloride, 4 parts of nano strontium titanate, 75 parts of 25% ammonia water, 40 parts of nano aluminum oxide, 3% ammonium molybdate 15 parts of aqueous solution, 7.5 parts of potassium carbonate, and 1 part of magnesium silicide;

[0048] (b). Dissolve calcium chloride and magnesium chloride in 250 parts of deionized water, add 500 parts of deionized water into the reaction kettle, add nano-aluminum oxide and nano-strontium titanate, and turn on the high-speed disperser at 1750 / min , Dilute ammonia water to 250 parts with deionized water, control the temperature of all solutions at 15°C, then add calcium chloride, magnesium chloride solution and ammonia water to the reaction kettle dropwise at the same time, and drop them in 15 minutes. Stir at high speed for 1.5 h...

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Abstract

The invention provides a method for preparing ultraviolet ray absorption agent isocyanuric acid benzotriazole. The method is characterized by comprising the following steps: fully mixing isocyanuric acid and 2-(2'-hydroxy-3'-chloromethyl methyl ether-5'-methyl phenyl)benzotriazole, then adding the aluminium oxide carrier solid base catalyst and sodium hydroxide, reacting for 1-2 hours at 75-85 DEG C under the protection of inert gas, separating oil phase, and extracting twice with water, wherein the oil phase is the ultraviolet ray absorption agent isocyanuric acid benzotriazole. In the invention, aluminium oxide carrier solid base catalyst is adopted to synthesize ultraviolet ray absorption agent isocyanuric acid benzotriazole in a catalytic manner, the conversion rate of the chemical reaction can be dramatically improved, and the yield of the product is improved.

Description

technical field [0001] The invention relates to a preparation method of an ultraviolet absorbent tribenzotriazole isocyanurate, in particular to a method for catalytically synthesizing tribenzotriazole isocyanurate by using a solid alkali catalyst. Background technique [0002] Solid base catalyst is a new type of catalyst. It has been paid more and more attention because of its high activity, high selectivity, mild chemical reaction conditions, easy separation of reaction system, no corrosion of equipment, environmental friendliness, and reusability. In terms of fine chemical synthesis and polymer synthesis, many chemical synthesis reactions with harsh reaction conditions can be carried out, and the synthesis reaction process is continuous, which reduces energy consumption and environmental pollution. In recent years, the research and development of solid alkali has also more and more widely. However, because solid base is a new type of catalyst, it started relatively late...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D403/14B01J27/232
Inventor 施晓旦郭和森
Owner SHANGHAI DONGSHENG NEW MATERIALS
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