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Aanalysis method of residual quantities of eighteen photoinitiators in ultra violet (UV) printing ink

A photoinitiator and printing ink technology, applied in the field of analysis of 18 kinds of photoinitiator residues in UV printing ink, can solve the problems of time-consuming, cumbersome, high cost, etc., and achieve the effect of improving the detection throughput

Active Publication Date: 2013-11-20
CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
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Problems solved by technology

[0006] On the other hand, the sample pretreatment methods for photoinitiators are mainly liquid-liquid extraction (LLE) and solid-phase extraction (SPE) techniques that are cumbersome, time-consuming, and require a large amount of solvent, and fast, low-volume, but high-cost processing methods. Pressurized solvent extraction (PLE) technology[13]

Method used

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  • Aanalysis method of residual quantities of eighteen photoinitiators in ultra violet (UV) printing ink
  • Aanalysis method of residual quantities of eighteen photoinitiators in ultra violet (UV) printing ink
  • Aanalysis method of residual quantities of eighteen photoinitiators in ultra violet (UV) printing ink

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example 1

[0080] The experimental results show that 30 min water immersion pretreatment of the sample can promote the peeling between the bonded layers of the composite paper material or cardboard material, which can better ensure the extraction of the residue inside the sample, thus greatly improving the gloss in the sample. Initiator extraction efficiency. In addition, the experiment also found that when the acetonitrile / water extract of the sample and n-hexane-ethyl acetate solution (3:7, V / V) were subjected to liquid-liquid partitioning, most of the extracted ink dyes were dispersed in the water phase, The co-extracted substances in the organic phase are reduced, so that the sample extraction solution has a certain purification effect.

[0081] Finally, this experiment determined that the sample was extracted by water immersion pretreatment.

[0082]

[0083] Example 2:

example 2

[0085] At present, the sample pretreatment methods for photoinitiator determination are mainly liquid-liquid extraction (LLE) and solid-phase extraction (SPE) techniques that are cumbersome, time-consuming, and require a large amount of solvent. After experiments, it was found that conventional solid-phase extraction still has a large resistance, which leads to poor impurity removal effect, while the dilution and impurity removal method will greatly reduce the sensitivity of the detection method.

[0086] In recent years, sample pretreatment methods are developing towards simplification, saving and miniaturization. QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) was first proposed and reported by Anastassiades and Lehotay in 2003. The core of its technology is to add water remover and purifier to the sample extract to remove excess water and impurities , the clarified solution was analyzed directly after centrifugation. Compared with the traditional solid-phase extr...

example 3

[0092]

[0093] From the results of the method evaluation, it can be seen that the compounds are well separated, the sensitivity of the method is high, and the linear relationship is good within the concentration range of 0.2 mg / L~10 mg / L (R 2 >0.995), meeting the evaluation requirements of detection methodology.

[0094]

[0095] Example 4:

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Abstract

An analysis method of residual quantities of eighteen photoinitiators in ultra violet (UV) printing ink aims to determine the residual quantities of the eighteen photoinitiators including 2-hydroxy-2-methyl-1-phenylpropanone, methyl benzoylformate, diphenyl ketone and the like. The analysis method is characterized by mainly comprising the following steps: 1) preparation of a test sample, 2) extraction of a sample, 3) dispersive solid phase extraction purification, 4) preparation of standard working solutions, 5) instrument analysis and 6) result calculating. According to the analysis method, through sample pretreatment and optimization and validation by instrument analysis, a sample pretreatment technology of dispersive solid phase extraction purification is applied to the determination of the residual quantities of the photoinitiators in the UV printing ink sample, and compared with a liquid-liquid extraction (LLE) technology and a solid phase extraction (SPE) technology adopted by related methods in the prior art, the analysis method has the characteristics of being rapid, simple, cheap, effective, reliable and safe. So far, the analysis method covers most kinds of residual photoinitiators than analysis methods at home and abroad.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical inspection of UV printing inks, and in particular relates to the rapid determination technology of 18 kinds of photoinitiators in UV printing inks. The 18 kinds of photoinitiators are 2-hydroxyl-2-methyl-1-benzene Proxyl acetone, methyl benzoylformate, benzophenone, 2-methylbenzophenone, 1-hydroxycyclohexyl phenyl ketone, p-N,N-dimethylaminobenzoic acid ethyl ester, 3- Methylbenzophenone, 4-methylbenzophenone, 2,2-dimethoxy-2-phenylacetophenone, methyl phthaloylbenzoate, isooctyl p-dimethylaminobenzoate Esters, 2-methyl-1-(4-methylthio)phenyl 2-morpholinyl-1-propanone, 4-isopropylthioxanthone, 2-isopropylthioxanthone, biphenyl There are 18 types of benzophenone, 2,4-diethylthioxanthone, 4,4-bis(dimethylamino)benzophenone, and 4,4-bis(diethylamino)benzophenone. [0002] Background technique [0003] With the popularization of UV printing process, photoinitiators (Photoinitiators, P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N30/88
Inventor 李中皓唐纲岭范子彦边照阳杨飞陈再根胡清源张洪非庞永强刘楠姜兴益李雪陈欢
Owner CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
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