Preparation method of 2-hydroxy-4-cetyloxy-diphenyl ketone

A technology of hexadecyloxybenzophenone and hydroxyl group is applied in the field of preparation of 2-hydroxy 4-n-hexadecyloxybenzophenone, which can solve equipment corrosion, environmental pollution, and preparation technology of ultraviolet absorbers Complex and other problems, to achieve the effect of simple purification

Active Publication Date: 2014-01-22
JINING MING SHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the complicated preparation process of the ultraviolet absorber and the serious corrosion of the equipment, it will pollute the environment during the post-processing of the product, and new technologies are needed to improve the deficiencies of the existing technologies.

Method used

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  • Preparation method of 2-hydroxy-4-cetyloxy-diphenyl ketone
  • Preparation method of 2-hydroxy-4-cetyloxy-diphenyl ketone
  • Preparation method of 2-hydroxy-4-cetyloxy-diphenyl ketone

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Effect test

Embodiment 1

[0019] One, the method of 2-hydroxyl 4-n-hexadecyloxybenzophenone;

[0020] (a). Chemical composition: 90 parts of 2,4-dihydroxybenzophenone, 140 parts of 1 bromohexadecane, 3 parts of mixed crystal solid alkali combination catalyst, KCO 3 60 parts, 1 part of benzyltriethylammonium chloride, 2 parts of nano-silver iodide;

[0021] (b). Combine 2,4 dihydroxybenzophenone, 1 bromohexadecane, mixed crystal solid base as catalyst, KCO 3 , benzyltriethylammonium chloride, and nano-silver iodide were placed in a four-necked flask, fed with nitrogen, refluxed at 130°C for 10 hours, filtered the solid matter while it was hot, and then separated the reacted aqueous phase from the organic phase, Then extract the organic phase with 100 parts of distilled water for 4 times, and then distill the organic phase under reduced pressure, and then cool to obtain the light yellowish white solid product 2-hydroxyl 4-hexadecyloxybenzophenone. Two, mixed crystal solid alkali combined catalyst, prep...

Embodiment 2

[0028] One, the method of 2-hydroxyl 4-n-hexadecyloxybenzophenone;

[0029] (a). Chemical composition: 110 parts of 2,4-dihydroxybenzophenone, 160 parts of 1 bromohexadecane, 5 parts of mixed crystal solid alkali combination catalyst, KCO 3 80 parts, 1.5 parts of benzyltriethylammonium chloride, 3 parts of nano silver iodide;

[0030] (b). Combine 2,4 dihydroxybenzophenone, 1 bromohexadecane, mixed crystal solid base as catalyst, KCO 3 , benzyltriethylammonium chloride, and nano-silver iodide were placed in a four-necked flask, and nitrogen gas was introduced, and the reaction was refluxed at 155°C for 8 hours, and the solid was filtered while it was hot, and then the reacted aqueous phase was separated from the organic phase, and then The organic phase was extracted 4 times with 100 parts of distilled water, and the organic phase extracted by distilled water was distilled under reduced pressure and then cooled to obtain a light yellow-white solid product, 2-hydroxyl 4-n-hexa...

Embodiment 3

[0033] (a). Chemical composition: 100 parts of 2,4-dihydroxybenzophenone, 150 parts of 1 bromohexadecane, 4 parts of mixed crystal solid alkali combination catalyst, KCO 3 70 parts, 2 parts of benzyltriethylammonium chloride, 2.5 parts of nano silver iodide;

[0034] (b). Combine 2,4 dihydroxybenzophenone, 1 bromohexadecane, mixed crystal solid base as catalyst, KCO 3 , benzyltriethylammonium chloride, and nano-silver iodide were placed in a four-necked flask, fed with nitrogen, and reacted at reflux at 140°C for 9 hours, filtered the solid matter while it was hot, and then separated the aqueous phase and the organic phase after the reaction, and then The organic phase was extracted 4 times with 100 parts of distilled water, and the organic phase extracted by distilled water was distilled under reduced pressure and then cooled to obtain a light yellow-white solid product, 2-hydroxyl 4-n-hexadecyloxybenzophenone.

[0035] 2. The preparation method of the mixed crystal solid su...

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Abstract

The invention provides a preparation method of 2-hydroxy-4-cetyloxy-diphenyl ketone, which comprises the following steps: mixing 2,4-dihydroxy benzophenone, 1-bromohexadecane, mixed crystal solid alkali composite catalyst, potassium carbonate, benzyltriethylammonium chloride and nano silver iodide, introducing nitrogen, reacting at 130-155 DEG C under reflux for 8-10 hours, filtering out the solid, separating the water phase from the organic phase after reaction, extracting the organic phase with water, and distilling under reduced pressure to obtain the product. The method has the advantages of simple purifying treatment and no corrosion to equipment; and the prepared 2-hydroxy-4-cetyloxy-diphenyl ketone is mainly used for producing stone paper in the fields of outer wall paints, rubber and plastic industry, and is also suitable for producing specialty paper.

Description

technical field [0001] The invention relates to a preparation method of 2-hydroxy 4-n-hexadecyloxybenzophenone. Background technique [0002] Ultraviolet absorbers are the earliest and widely used light stabilizers in industrial applications. They are widely used in plastics, rubber, fibers, coatings, and papermaking applications. They can prevent the early aging of the above materials by absorbing ultraviolet rays. Longevity and material savings play an important role. With the development of science and technology and the high-tech of synthetic technology, various new ultraviolet absorbers are continuously developed and applied in various fields, providing products with higher technical added value for light-stabilized chemical technology. However, because the preparation process of ultraviolet absorbers is relatively complicated, and the equipment is severely corroded, and the environment is polluted in the process of product post-processing, new technologies are needed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/61C07C49/84
CPCC07C45/71C07C49/84
Inventor 施晓旦郭和森
Owner JINING MING SHENG NEW MATERIALS CO LTD
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