Polymerizable hydroxyalkyl benzophenone derivative photoinitiator and preparation method thereof

A kind of technology of hydroxyalkyl phenone and hydroxyalkyl benzophenone, which is applied in the field of polymerizable photoinitiator and its preparation, can solve the problems of decreased initiation efficiency of initiator, difficult control of synthesis process, complicated preparation process, etc., and achieves Easy separation and purification, avoid coating yellowing and aging, simple process effect

Inactive Publication Date: 2016-06-08
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the preparation process of the hydroxyalkyl phenone derivative photoinitiator synthesized by the above technical scheme is complicated, the synthesis process is not easy to con...

Method used

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  • Polymerizable hydroxyalkyl benzophenone derivative photoinitiator and preparation method thereof
  • Polymerizable hydroxyalkyl benzophenone derivative photoinitiator and preparation method thereof
  • Polymerizable hydroxyalkyl benzophenone derivative photoinitiator and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] S1. 20 parts of Darocur1173 and 27 parts of triethylamine are dissolved in 40 parts of heavy distilled dichloromethane solvent;

[0035] S2. Add it into a four-necked round-bottomed flask equipped with a thermometer, a spherical condenser, a constant pressure funnel, and a nitrogen tube under a nitrogen atmosphere, and place it in an ice bath to keep stirring. Then use a constant pressure funnel to add 51 parts of acryloyl chloride dropwise, and the dropwise addition is completed in about 30 minutes. After 12 hours, use the TCL spot plate tracking method to detect, and stop the reaction after the product is detected;

[0036] S3. After the reaction, the solution was washed with water for 3 times, and the washed solution was placed in a beaker equipped with anhydrous magnesium sulfate particles, dried overnight, and concentrated to obtain a yellow liquid crude product;

[0037] S4. Add the yellow liquid crude product into absolute ethanol, freeze and crystallize in the r...

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Abstract

The invention discloses a polymerizable hydroxyalkyl benzophenone derivative photoinitiator and a preparation method thereof. 2-hydroxyl-2-methyl-1-phenylacetone (Darocur1173) is modified with (methyl) acryloyl chloride under the ice bath condition, and carbon-carbon double bonds which can participate in a photocuring reaction is introduced after hydroxyl esterification of Darocur1173, so that the photoinitiator which can participate in curing is prepared, the part, which is not photolyzed, of the initiator can be effectively prevented from being migrated to the surface of a coating, the product quality is guaranteed, the requirements of the food packaging field and the drug packaging field can be met, and the initiation efficiency of the modified initiator is high.

Description

technical field [0001] The invention relates to the field of photocuring technology, in particular, the invention relates to a polymerizable photoinitiator and a preparation method thereof. Background technique [0002] In the photocuring system, the photoinitiator is often not completely exhausted during the photocuring process, and the unphotolyzed part will migrate to the surface of the coating, which will cause the coating to yellow and age, affect the quality of the product, and even produce odor and toxicity, limiting its application in food packaging and pharmaceutical packaging. In addition, the migration of photoinitiators to the surface of the coating may make the surface of the coating sticky and dirty, easy to stick to oil stains, and affect the appearance of the product. Therefore, it is necessary to modify the small molecule ultraviolet photoinitiator by chemical means to prepare a polymerizable photoinitiator or a macromolecular photoinitiator. [0003] 2-Hy...

Claims

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Application Information

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IPC IPC(8): C07C69/54C07C69/533C07C67/14C08F2/48C09D7/12
CPCC07C69/54C07C67/14C07C69/533C08F2/48C09D7/63
Inventor 苏嘉辉崔艳艳刘晓暄黄鸿
Owner GUANGDONG UNIV OF TECH
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