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Cationic polymerization or cation-free radical mixed polymerization type photopolymerization curing system

A cationic polymerization and mixed polymerization technology, which is applied in the direction of optics, optomechanical equipment, and photoplate-making process of pattern surface, etc., can solve the problems of severe free radical photopolymerization, oxygen inhibition, uneven performance adjustment, poor surface curing, etc. Achieve the effects of improving dry etching resistance, fast polymerization rate, and convenient storage and transportation

Inactive Publication Date: 2011-08-31
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Free radical photopolymerization has some serious disadvantages: First, free radical photopolymerization is severely inhibited by oxygen, which is easy to cause poor surface curing, and often needs to be cured under an inert atmosphere, which is inconvenient to operate; secondly, free radical photopolymerization is usually accompanied by this greater volume shrinkage
However, the cationic polymerization system also has its own shortcomings, such as being greatly affected by moisture, slow polymerization speed, and variable performance adjustment.

Method used

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  • Cationic polymerization or cation-free radical mixed polymerization type photopolymerization curing system
  • Cationic polymerization or cation-free radical mixed polymerization type photopolymerization curing system
  • Cationic polymerization or cation-free radical mixed polymerization type photopolymerization curing system

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Experimental program
Comparison scheme
Effect test

Embodiment

[0041] Dissolve the cationic photopolymerization initiator and the photosensitive monomer whose terminal groups are vinyl ether and allyl ether in the solvent according to the ratio in the following table.

[0042] Coat the curing system on the salt sheet, dry it with hot air to form a film, and put it on the horizontal sample stage of the real-time infrared spectrometer. Directly irradiate the sample with a point light source at room temperature, and adjust the UV light intensity to 30mW / cm 2 , while collecting infrared data. Its aggregation is as follows:

[0043] Polymerization of the curing system initiated by the cationic initiator in table 1

[0044]

[0045] P-1: Mixed triaryl sulfonium fluoroantimonate cationic photoinitiator PAG201;

[0046] P-2: mixed triaryl sulfonium fluoroantimonate cationic photoinitiator PAG202;

[0047] P-3: triaryl sulfonium fluoroantimonate cationic photoinitiator 445;

[0048] P-4: free radical initiator ITX;

[0049] P-5: free radi...

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Abstract

The invention discloses a cationic polymerization or cation-free radical mixed polymerization type photopolymerization curing system and belongs to the technical field of preparation of optically functional materials for recording imaging information. The curing system consists of 86 to 89 weight parts of sensitizing monomer, of which the terminal groups are vinyl ether and allyl ether, 1 to 4 weight parts of photopolymerization initiator and 7 to 13 weight parts of solvent. Compositions of the curing system can be applied to a nanoimprinting technology to generate corresponding images and photocureable coating or can be applied to a negative type resist to obtain a negative image. Radical photopolymerization and cation photopolymerization occur in the curing system at the same time. The curing system exerts the advantages of two kinds of polymerization and has high curing speed, low viscosity and low contractibility.

Description

technical field [0001] The invention belongs to the technical field of preparation of optical functional materials for imaging information recording, and in particular relates to a photopolymerization curing system of cation polymerization or cation-radical mixed polymerization. Background technique [0002] Photopolymerization (also known as photocuring) refers to the process in which liquid oligomers (including monomers) undergo cross-linking polymerization to form solid products under the action of light (ultraviolet or visible light). UV curing has the advantages of no organic solvent, less environmental pollution, fast curing speed, energy saving, good performance of cured products, suitable for high-speed automatic production lines and coating on heat-sensitive substrates, etc. [0003] Photopolymerization (light curing) technology is widely used in coatings, inks, adhesives, packaging materials for the electronics industry, photoresists, and printing materials, dental...

Claims

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Application Information

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IPC IPC(8): C08F30/08C08F130/08C08F2/48G03F7/075C09D4/00
Inventor 邹应全方圆
Owner BEIJING NORMAL UNIVERSITY
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