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Use of 2-methoxy-4'-benzoylbiphenyl as photoinitiator

A technology of phenylbenzophenone and photoinitiator, which is applied in the application field of 2-methoxy-4'-phenylbenzophenone as a photoinitiator, can solve the obstacles of UV curing technology, small molecular weight, Eliminate product odor and toxicity issues, achieve the effects of reducing the probability of bond breakage when excited by light, stable molecular structure, and good solubility

Active Publication Date: 2012-10-03
INSIGHT HIGH TECH JIANGSU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, benzophenone has certain disadvantages at the same time: its own molecular weight is small, so it is easy to volatilize and migrate, resulting in odor and toxicity of the product; and volatile benzene is released during the use of benzophenone, which makes its use restricted. Strict restrictions, such as food packaging material regulations strictly stipulate that benzene should not be detected; the limit in tobacco packaging is 0.01mg / m 2
For overcoming the big shortcoming of the smell of benzophenone, people have developed benzophenone photoinitiator 4-phenylbenzophenone again, because the molecular weight of 4-phenylbenzophenone is bigger, in odor and The mobility has been greatly improved, both of which have been significantly reduced and the photocuring initiation efficiency is high, but the problem of benzene release is still unsolved, which makes UV curing technology hindered in the field of food packaging and printing. Therefore, the development of solutions to solve the above shortcomings New photoinitiators in the spotlight

Method used

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  • Use of 2-methoxy-4'-benzoylbiphenyl as photoinitiator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Applied performance evaluation of photoinitiator 2-methoxy-4'-phenylbenzophenone

[0021] Experimental formula and working conditions

[0022] Experimental recipe:

[0023] 1) Epoxy propylene carboxylic acid resin 50% (wt)

[0024] 2) Ethoxylated Trimethylolpropane Triacrylate 42%

[0025] 3) Triethanolamine 3%

[0026] 4) 2-methoxy-4'-phenylbenzophenone 5%

[0027] 5) Matting agent 0.1%

[0028] Working conditions:

[0029] Under dark conditions, add 5g of photoinitiator, 50g of epoxy propylene carboxylic acid resin, 42g of ethoxylated trimethylolpropane triacrylate, 3g of triethanolamine, and 0.1g of matting agent in a glass container equipped with a stirrer , after stirring evenly, the free radical photocuring system is obtained. The mixture is coated on a glass plate with a brush, the thickness of the film is 20um, the glass plate is cured after being irradiated by a lamp at a speed of 10m / min, and the power of the mercury lamp is 80W / cm.

Embodiment 2

[0050] Embodiment 2: Benzene release analysis of photoinitiator 2-methoxy-4'-phenylbenzophenone, 4-phenylbenzophenone and benzophenone in application

[0051] Determination of Benzene Release from Cured Films by Headspace-Gas Chromatography

[0052] 1) Quantitative analysis working curve drawing:

[0053] Add 20mg of benzene into a 250ml volumetric flask, weigh it accurately (accurate to 0.1mg), make it to volume with glycerol triacetate, and set it as the first grade standard solution.

[0054] Take 50.00ml of the first-level standard solution, add it to a 250ml volumetric flask, and dilute it with triacetin to make it the second-level standard solution.

[0055] Take 50.00ml of the second-level standard solution, add it to a 250ml volumetric flask, and dilute it with triacetin to make it the third-level standard solution.

[0056] Take 50.00ml of the third-level standard solution, add it to a 250ml volumetric flask, and dilute to the volume with glycerol triacetate, and se...

Embodiment 3

[0066] Embodiment 3: 2-methoxy-4'-phenylbenzophenone application formula in paint

[0067] 1) Polyester propylene carboxylic acid resin 50% (wt)

[0068] 2) Ethoxylated Trimethylolpropane Triacrylate 30%

[0069] 3) Ethyl p-dimethylaminobenzoate 4.5%

[0070] 4) 2-methoxy-4'-phenylbenzophenone 6%

[0071] 5) ITX 2%

[0072] 6) Yellow 3G 3%

[0073] 7) Talc powder 3%

[0074] 8) Defoamer 1.0%

[0075] 9) Leveling agent 0.5%

[0076] The curing conditions are the same as in Example 1 to obtain a firm film layer.

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Abstract

The invention relates to application of a benzophenone compound 2-methoxy-4'-benzoylbiphenyl as a photoinitiator in ultraviolet-cured compositions. The compound serving as the photoinitiator has good reaction activity and good surface curing capacity, has the advantages of low odor and low benzene release, and is suitable for ultraviolet-cured compositions such as coatings, ink, adhesives and the like.

Description

technical field [0001] The invention relates to the application of the compound 2-methoxy-4'-phenylbenzophenone as a photoinitiator in an ultraviolet light curing composition. Background technique [0002] As a new type of green technology, UV curing technology has a wide range of applications in coatings, adhesives, printing inks, photoetching, paper glazing and biomaterials, showing good development prospects. UV curable compositions generally include the following three main components: prepolymer, monomer and photoinitiator. [0003] The photoinitiator is the key component of the composition, which is directly related to whether the prepolymer and the monomer can quickly change from liquid to solid state when the composition is irradiated by light. And the photoinitiator requires good curing rate, good surface curing activity, low odor, low yellowing and good solubility and other properties. In addition, as consumers become increasingly sensitive to chemical contaminat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F2/48C08L51/08
Inventor 赵文超李家齐姚丽秀罗必奎
Owner INSIGHT HIGH TECH JIANGSU CO LTD