Bicomponent free radical type visible light initiation system and application thereof

A technique of initiating system and free radical, which is applied in applications, optical record carriers, household appliances, etc., can solve the disadvantages of improving the compatibility of photoinitiating system with free radical monomers and prepolymers, and the weak light absorption capacity of camphorquinone , affect the performance of curing materials and other issues, to achieve the effect of simple composition, good photoinitiation performance, and good curing degree

Active Publication Date: 2013-09-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Camphorquinone is the most widely used of the four free radical visible light photoinitiators, but camphorquinone has two main disadvantages as a photoinitiator. One is that it must be used together with hydrogen-donating amine compounds, and amine compounds generally have Toxicity; the second is that the light absorption ability of camphorquinone is very weak, its maximum absorption peak is located at 468nm, and the molar absorptivity coefficient is only 380 dm2 mol-1, which seriously limits its application
Due to the large number of components required, it is not conducive to improving the compatibility of the photoinitiating system with free radical monomers and prepolymers, and seriously affects the performance of cured materials

Method used

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  • Bicomponent free radical type visible light initiation system and application thereof
  • Bicomponent free radical type visible light initiation system and application thereof
  • Bicomponent free radical type visible light initiation system and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 0.158g [cyclopentadiene-iron-naphthalene] hexafluorophosphate (Ⅲ, Fc-Naph, 0.4mmol) into a brown bottle, then add 2mL N-methylpyrrolidone (NMP, 2mmol), stir well Completely dissolve [cyclopentadiene-iron-naphthalene] hexafluorophosphate, then add 10 g of free radical monomer tripropylene glycol diacrylate (TPGDA, Jiangsu Sanmu Group), stir well and store in the dark. The prepared sample is evenly coated in a rubber ring (fixed diameter) between two pieces of glass, irradiated by a 50W halogen lamp (Suzhou Huiyi Industrial Materials Co., Ltd.) at room temperature, and each sample is repeated by near-infrared scanning three times. It should be noted that the same sample point was irradiated under the halogen lamp once in a while and immediately carried out an infrared scan. In addition, the illuminance of the halogen lamp should be adjusted to 1.0mW / cm before use. 2 (Illuminance meter from Photoelectric Instrument Factory, Beijing Normal University). Near-infrare...

Embodiment 2

[0036] Weigh 0.158g [cyclopentadiene-iron-naphthalene] hexafluorophosphate (Ⅲ, Fc-Naph, 0.4mmol) into a brown bottle, then add 2mL N-methylpyrrolidone (NMP, 2mmol), stir well Completely dissolve [cyclopentadiene-iron-naphthalene] hexafluorophosphate, then add 10 g of free radical monomer tripropylene glycol diacrylate (TPGDA, Jiangsu Sanmu Group), stir well and store in the dark. Using a method similar to that in Example 1, irradiate the prepared sample through a 50W halogen lamp and place a broadband filter λ≥460nm (Guangzhou Languang Electronic Technology Co., Ltd.) at room temperature, and adjust the illumination to 2.0mW / cm 2 . The conversion rate of double bond polymerization of TPGDA in photocuring system was detected by near-infrared spectroscopy. See attached for conversion rate data figure 2 . It can be seen from the figure that after using a broadband filter λ≥460nm, the double bond conversion rate and photocuring speed of TPGDA in the Fc-Naph / NMP system are al...

Embodiment 3

[0040] Weigh 0.158g [cyclopentadiene-iron-naphthalene] hexafluorophosphate (Ⅲ, Fc-Naph, 0.4mmol) into a brown bottle, then add 2mL N-methylpyrrolidone (NMP, 2mmol), stir well Completely dissolve [cyclopentadiene-iron-naphthalene] hexafluorophosphate, then add 10 g of free radical monomer tripropylene glycol diacrylate (TPGDA, Jiangsu Sanmu Group), stir well and store in the dark. Using a method similar to that in Example 1, put the prepared sample through a 50W halogen lamp and place an interference filter λ=540nm (Guangzhou Languang Electronic Technology Co., Ltd.) and then irradiate at room temperature. Before use, adjust the illumination to 5.0mW / cm 2 . The conversion rate of double bond polymerization of TPGDA in the photocuring system was detected by near-infrared spectroscopy. See attached for conversion rate data image 3 . It can be seen from the figure that after using the broadband filter λ=540nm, the double bond conversion rate and photocuring speed of TPGDA in...

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Abstract

The invention relates to a bicomponent free-radical visible light initiation system and application thereof to a photo-curing technique. The bicomponent free-radical visible light initiation system consists of a cationic ferrocene metal complex denoted by the following general formula (I) and a pyrrolidone compound denoted by a general formula (II). The definitions of R1, R2, R3, R4, R5, R6, R7, R8, MnX<-> and Ar are described in a specification. A photo-cured combination provided by the invention consists of 0.1-10 percent by weight of the bicomponent free-radical visible light initiation system according to a claim 1 and 90-99.9 percent by weight of a photo-reactive resin or an active monomer. The bicomponent free-radical visible light initiation system provided by the invention has the characteristics that an initiation speed is quick, components are simple, and the bicomponent free-radical visible light initiation system is suitable for a long-wave light source (more than 500nm).

Description

Technical field [0001] The present invention involves a dual -component free radical light caused by the trigger system and its purpose in the field of visible optical solidification. This dual -component free radical light trigger system is composed of cationic iron iron metal complexes and pyrrodidone.field. Background technique [0002] With the rapid development of the information industry, optical curing technology is becoming more and more widely used in the electronics industry, printing industry, and micro -processing.In the composition of the optical curing system, the performance of the optical cause is the key factor that determines the degree of solidification of ultraviolet light and the speed of solidification. Therefore, in the process of technological progress of the optical curing system, the research and development of the light sensitivity system always occupies very important.s position. [0003] In order to simplify ultraviolet optical aggregation equipment a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F2/48C08F122/20C09D4/02C09D163/10C09D175/14C09D171/00C09D167/06C09D11/00C09J4/02C09J163/10C09J175/14C09J171/00C09J167/06G11B7/24
Inventor 王涛陈瑜李光雷
Owner BEIJING UNIV OF CHEM TECH
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