Rapid measurement method of residual amounts of two photoinitiators in paper packaging material

A paper-based packaging material and photoinitiator technology, applied in the direction of measuring devices, material separation, and analysis materials, can solve the problems of daily inspection and screening of unfavorable samples, complex analysis process, long analysis time, etc., and achieve detection sensitivity and accuracy High reliability, rapid analysis, good repeatability

Inactive Publication Date: 2013-10-02
HONGYUN HONGHE TOBACCO (GRP) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the analysis method for 4,4-bis(diethylamino)benzophenone and 4,4-bis(dimethylamino)benzophenone has been reported in the literature using gas chromatography tandem mass spectrometry (GC-MS / MS ), but due to the large molecular weight and high boiling point of these two compounds, the analysis time of the GC-MS / MS instrument method is longer, and because the GC-MS / MS analysis method requires a more complicated sample pretreatment and purification process, so , the analysis process is complicated and time-consuming, which is not conducive to the daily inspection and screening of a large number of samples

Method used

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  • Rapid measurement method of residual amounts of two photoinitiators in paper packaging material
  • Rapid measurement method of residual amounts of two photoinitiators in paper packaging material
  • Rapid measurement method of residual amounts of two photoinitiators in paper packaging material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Reagents and instruments:

[0040] Analytical standards 4,4-bis(dimethylamino)benzophenone (purity >98%) and 4,4-bis(diethylamino)benzophenone (purity >98%) were purchased from Tokyo Chemical Industry Co., Ltd.; acetonitrile (HPLC grade), purchased from Fisher Scientific; laboratory water is ultrapure water.

[0041]American Millipore ultra-pure water device; Waters Acquity ultra-high performance liquid chromatography (with PDA detector), binary solvent manager and Empower2 chromatographic workstation (Waters, USA); AE163 electronic balance, sensitivity: 0.0001g (Mettler, Switzerland) ); Kunshan Shumei KQ-700DB desktop CNC ultrasonic instrument (Kunshan Ultrasonic Instrument Co., Ltd.); SHA-BA water bath constant temperature oscillator (Jiangsu Jintan Zhongda Instrument Factory); needle filter, 13mm×0.22μm (Shanghai An Pu Scientific Instrument Co., Ltd.).

[0042] 2. Sample handling:

[0043] Such as figure 1 Shown, accurately cut 0.5dm 2 Paper printed and pac...

Embodiment 2

[0055] Repeat Example 1 with the following differences: adopt Luna PFP (2) (3μm, 150x4.6mm) from Chromatographic column, column temperature: 30°C; mobile phase A: water; mobile phase B: acetonitrile; column flow rate: 0.5mL / min; injection volume: 10μL; gradient: binary solvent mobile phase gradient as shown in Table 2: detection Detector: ultraviolet detector; detector mode: 2D; detect ultraviolet wavelength 372nm. Referring to this condition, the sample detection can be completed within 7 minutes, and the typical chromatogram is as follows image 3 , where the chromatographic peak at 7.65 minutes corresponds to 4,4-bis(dimethylamino)benzophenone, and the chromatographic peak at 9.75 minutes corresponds to 4,4-bis(diethylamino)benzophenone.

[0056] Table 2 Gradient elution program

[0057]

[0058] The test evaluation results show that the detection limit of 4,4-bis(diethylamino)benzophenone and 4,4-bis(dimethylamino)benzophenone in paper packaging materials is 1.0mg / m ...

Embodiment 3

[0060] The same paper packaging material sample was analyzed by the methods of Examples 1-2, and the experimental results are shown in Table 3. It can be seen from Table 3 that under the two liquid chromatography analysis conditions, the experimental data have good consistency, which is suitable for the combination of 4,4-bis(diethylamino)benzophenone and 4,4 in paper packaging materials. - Fast and accurate analysis of bis(dimethylamino)benzophenone.

[0061] Table 3 Comparison of actual sample analysis results

[0062]

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Abstract

The invention discloses a rapid measurement method of residual amounts of two photoinitiators in a paper packaging material. The method comprises the preparation of a sample, the pretreatment of the sample, the preparation of a standard working solution, and the analysis and result calculation by an instrument. By adopting the method disclosed by the invention, a liquid-phase chromatographic analysis technique is firstly applied to the measurement of the residual amounts of the two photoinitiators in the paper packaging material; 4,4-bis(diethylamino)benzophenone and 4,4-bis(dimethylamino)benzophenone in the paper packaging material can be quantitatively analyzed and screened rapidly, simply and conveniently so as to better deal with the raw material access requirement for a foreign relevant food contact material; the method has the characteristics of simple pretreatment process, fast analysis, high detection sensitivity, high accuracy and high repeatability.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical testing of packaging materials, and in particular relates to a method capable of rapidly determining two photoinitiators in paper packaging materials, namely 4,4-bis(dimethylamino)benzophenone and 4,4- Method for determination of residual bis(diethylamino)benzophenone. Background technique [0002] With the popularization of UV printing process, photoinitiators (PIs), as the main component of UV-curable ink, are widely used in paper packaging printing. Photoinitiators are a class of compounds with photosensitive groups, which can generate free radicals, cations, etc. under the excitation of ultraviolet light to initiate polymerization, crosslinking and curing of monomers. Studies in recent years have found that after the UV printing ink is cured, the residual ultraviolet photoinitiator in it can undergo chemical migration or contaminate the food in the package through physical conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 范多青王庆华李世杰杨艳萍郭丽娟李利君邹楠段海波李超高文军李文英
Owner HONGYUN HONGHE TOBACCO (GRP) CO LTD
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