Photoinitiator composition capable of initiating via visible light and its use

A photoinitiator and composition technology, which is applied in the direction of non-polymer organic compound adhesives, adhesives, coatings, etc., can solve the problems that visible photoinitiators are expensive, inconvenient to use, and difficult to promote and use.

Inactive Publication Date: 2004-09-08
ZHUHAI DONGCHENG UV MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these visible photoinitiators are all expensive, are difficult to popularize and use in practical application; In addition, CN1215421A discloses a kind of composition that is initiated polymerization by visible light, wherein initiator is combined with containing polymercaptan and acyl phosphine oxide initiator, but this The storage period of the composition is only about one week, and it is very inconvenient to use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Photoinitiator composition 1:

[0098] The photoinitiator is ITX, and the co-initiator is DEA-TMPTA

[0099] ITX: DEA-TMPTA weight ratio = 1:5

[0100] Specific formula:

[0101] Bisphenol A epoxy acrylate 40wt%

[0102] TPGDA 15wt%

[0103] TMPTA 17wt%

[0104] Photoinitiator composition 1 18wt%

[0105] 1250 mesh talcum powder 10wt%

[0106] Uses: varnish

[0107] The curing time of the formula sample of embodiment 1 under the indium lamp is 5 seconds

Embodiment 2

[0111] Photoinitiator composition 2:

[0112] The photoinitiator is BMS, and the co-initiator is DEA-TMPTA

[0113] BMS: DEA-TMPTA weight ratio = 1:9

[0114] Specific formula:

[0115] PDDA 50wt%

[0116] HDDA 10wt%

[0117] TMPTA 20wt%

[0118] Photoinitiator composition 2 20wt%

[0119] Uses: varnish

[0120] The curing time of the formula sample of embodiment 2 under the indium lamp is 4 seconds

Embodiment 3

[0124] Photoinitiator composition 3:

[0125] The photoinitiator is CTX and BP, and the co-initiator is DEA-TMPTA

[0126] CTX:BP:DEA-TMPTA weight ratio=1:1:8

[0127] Specific formula:

[0128] Bisphenol A epoxy acrylate 30wt%

[0129] TMPTA 10wt%

[0130] PO-NPGDA 10wt%

[0131] EO-TMPTA 20wt%

[0132] Photoinitiator composition 3 20wt%

[0133] OK-500 10wt%

[0134] Uses: varnish

[0135] The curing time of the formula sample of embodiment 3 under the indium lamp is 6 seconds

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PUM

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Abstract

The present invention belongs to the field of light cured material, and is especially one kind of photoinitiator composition capable of producing free radical or cation under the irradiation of visual light. The composition consists of photoinitiator and co-photoinitiator in the weight ratio of 1 to 0.5-30. The photoinitiator is alpha-cracking type and / or hydrogen-eliminating free radical photoinitiator; and the co-photoinitiator is alkyl hydroxy amine, dimethylamino benzoate, amine modified acrylate monomer or their mixture. The photoinitiator composition in 1.5-40 wt% is added into light cured material comprising resin and monomer to initiate free radical polymerization to cure.

Description

technical field [0001] The invention belongs to the field of photocurable materials, and in particular relates to a photoinitiator composition capable of generating free radicals or cations through irradiation of a visible light source. Background technique [0002] Photocurable materials (Note: The photocurable materials referred to in this article include photocurable coatings, inks, adhesives, etc.) are mainly composed of photocurable resins, reactive diluents and photoinitiators. Photoinitiator refers to a class of compounds that can be excited into free radicals or cations under the action of light. The photophysical and photochemical properties of photoinitiators are very important for the control of photoinitiation and photopolymerization process. Photoinitiators with different structures have different absorption spectra and free radical activities. Choosing a photoinitiator that matches the spectral energy distribution of the light source will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/50C09D4/02C09J4/02
Inventor 周立辉李东民邱冠周
Owner ZHUHAI DONGCHENG UV MATERIALS
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