Photocurable composition for PCB containing alkenyl ether and/or oxetane compounds and free radical polymeric compounds

A polymeric compound and light-curable technology, applied in applications, household utensils, inks, etc., can solve the problems of short light source life, poor performance of light-cured film, ozone pollution and other problems, and achieve steep imaging side walls and good curing performance Excellent, improve the effect of surface polymerization

Pending Publication Date: 2020-12-25
BAODING LUCKY INNOVATIVE MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the disadvantage is that in the current technology of photocurable ink for PCB, the curing light source used is ultraviolet lamp (UV) or UV-LED, which is still not satisfactory in terms of safety and production cost.
At the same time, the penetration of ultraviolet light is weak, and some components with conjugated structures or pigment substances in the photocuring formula have strong absorption of ultraviolet light, resulting in serious light intensity attenuation, incomplete curing, and poor performance of photocurable films; easy to generate ozone pollute the environment, etc.
In addition, ultraviolet light is harmful to the human body, the life of the light source is short, and the price is higher
[0003] Photocuring technology mainly has two mechanisms: free radical curing and cationic curing. The

Method used

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  • Photocurable composition for PCB containing alkenyl ether and/or oxetane compounds and free radical polymeric compounds
  • Photocurable composition for PCB containing alkenyl ether and/or oxetane compounds and free radical polymeric compounds
  • Photocurable composition for PCB containing alkenyl ether and/or oxetane compounds and free radical polymeric compounds

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0138]According to one embodiment of the present invention, the photocurable composition includes at least one other cationically polymerizable compound different from component (a2).

[0139]The other cationic polymer compound may be in the form of monomers or resins (such as oligomers or prepolymers). According to an embodiment of the present invention, the other cationic polymerizable compound may be selected from ethylene oxide-based compounds and aziridine-based compounds.

[0140]The ethylene oxide compound may be selected from, for example, glycidyl ether epoxy compounds, glycidyl ester epoxy compounds, glycidylamine epoxy compounds, aliphatic epoxy compounds, alicyclic epoxy compounds, and the like. The ethylene oxide compounds may be in the form of monomers or resins (such as oligomers or prepolymers). Mention may also be made of compounds having both an oxirane group and a radical polymerizable group (such as an acrylate group), such as epoxy (meth)acrylate resins. Preference is...

Example

[0240]Example 1-77 and Comparative Example 1-3

[0241]Infrared light-curable inkjet printing inks were prepared according to the above-mentioned preparation method, according to the components and proportions in Table 1 to Table 8 below, to prepare the inkjet printing inks of Examples 1-77 and Comparative Examples 1-3, respectively.

[0242]Table 1 Formulation of infrared light-curable inkjet printing ink

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[0244]Table 2 Formulation of infrared light-curable inkjet printing ink

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[0247]Table 3 Formulation of infrared curing inkjet printing ink

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[0250]Table 4 Formulation of infrared light-curable inkjet printing ink

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[0253]Table 5 Formulation of infrared curing inkjet printing ink

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[0256]Table 6 Formulation of infrared light curing inkjet printing ink

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[0259]Table 7 Formulation of infrared light-curable inkjet printing ink

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[0262]Table 8 Formulations of infrared light-curable inkjet printing inks and light-curable inks of compa...

Example Embodiment

[0368]Example 78: Reaction of vinyl ether monomers and methacrylate monomers in the presence of free radical photoinitiators

[0369]Using high-efficiency free radical photoinitiator bis(2,4,6-trimethylbenzoyl)phenyl phosphine oxide (trade name 819) as free radical photoinitiator, using 395nm UV-LED light source (light intensity 100mW / cm2), using the Photo-DSC test method to test the initiation effect of 819 on the acrylic ester radical polymerizable monomer TPGDA and 4-hydroxybutyl vinyl ether monomer (HBVE). The experimental results are attachedfigure 1 (The relationship between sample heat flow and exposure time). The experimental results show that the light intensity is 100mW / cm2When 819 was used to initiate TPGDA polymerization under the 395nm UV-LED light source, the heat flow curve of the sample changed significantly. This was caused by the cross-linking reaction of the double bond of TPGDA and the release of heat. When 819 had HBVE polymerization, There was almost no change in ...

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PUM

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Abstract

The invention discloses a photocurable composition for a printed circuit board, which contains the following components: (a) a photopolymerizable compound, (b) at least one infrared absorbing photosensitizer and (c) at least one photopolymerization initiator, wherein the photopolymerizable compound as the component (a) contains (a1) at least one free radical polymeric compound and (a2) at least one cationic polymeric compound, and is selected from alkenyl ether compounds and/or oxetane compounds, and the infrared absorbing photosensitizer as the component (b) comprises at least one polymethinecyanine compound.

Description

technical field [0001] The present invention relates to a photocurable composition for printed circuit boards (PCB), which contains (a) a photopolymerizable compound, (b) at least one infrared absorbing photosensitizer and (c) at least one photopolymerization initiator agent. The photocurable composition for PCB of the present invention is suitable for preparing photosensitive ink. The photosensitive ink of the present invention is also suitable for the preparation of printed circuit boards (PCB). Background technique [0002] In recent years, the emerging digital inkjet printing technology has replaced the traditional screen printing technology and has been promoted and applied in PCB production, especially for the production of multi-variety and low-volume PCB products. As a brand-new printing tool, inkjet printing is a fully digital printing. When forming resist, solder resist, and symbol marks on the printed circuit board, it can perform precise area printing without t...

Claims

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Application Information

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IPC IPC(8): C09D11/101C09D11/30
CPCC09D11/101C09D11/30
Inventor 邹应全庞玉莲丁艳花辛阳阳B·斯特雷梅尔
Owner BAODING LUCKY INNOVATIVE MATERIALS
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