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Amine co-initiator as well as preparation method and application thereof

A technology of co-initiator and photoinitiator, applied in the direction of organic chemistry, etc., can solve the problems of insufficient oxygen inhibition inhibition performance, low curing rate, and high yellowing, so as to improve the surface curing effect, inhibit oxygen polymerization, and reduce yellowing. changing effect

Active Publication Date: 2021-05-25
TIANJIN JIURI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN105295669A discloses a UV-curable coating. The UV-curable coating consists of the following components in parts by weight: 16-25 parts of bisphenol A epoxy acrylate, 4-10 parts of novolak epoxy acrylate, epoxy oil 8-15 parts of propionate, 10-25 parts of reactive diluent, 1-5 parts of photoinitiator, 6-12 parts of organic amine, 1-4 parts of auxiliary agent, 30-50 parts of solvent, wherein the photoinitiator The agent is one or more of benzoin dimethyl ether, benzophenone, 1-hydroxy-cyclohexyl-benzophenone, 2,4,6-trimethylbenzoyl diphenylphosphine oxide; The organic amine is one or more of diethanolamine, triethanolamine, triethylamine, and N,N-dimethylbenzylamine; CN110903741A discloses a composition with the function of initiating polymerization and a method for preparing an acrylamide copolymer, The composition includes a water-soluble thioxanthone photoinitiator and an organic amine; the weight ratio of the organic amine to the water-soluble thioxanthone photoinitiator is 1:0.0001-10000; the organic amine is N,N,N',N'-tetramethylethylenediamine, N,N-dimethylethanolamine, N,N'-dimethylpiperazine, N,N,N',N'-tetramethylurea and at least one of triethanolamine; the above-mentioned tertiary amines still have the problems of low curing rate, high yellowing, and insufficient inhibition of oxygen inhibition as active amine initiators for photocuring systems

Method used

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  • Amine co-initiator as well as preparation method and application thereof
  • Amine co-initiator as well as preparation method and application thereof
  • Amine co-initiator as well as preparation method and application thereof

Examples

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Embodiment 1

[0058] This embodiment provides a photocurable composition, which includes a base material, a hydrogen abstraction type photoinitiator and an amine co-initiator;

[0059] In the present embodiment, the hydrogen abstraction type photoinitiator adopts ITX, and the co-initiator is PC-41;

[0060] Wherein the preparation method of PC-41 is as follows, specifically comprises the following steps;

[0061] (a) Under the condition of heating and stirring, add N,N dimethylaminopropylamine dropwise to the formaldehyde solution, the molar ratio of formaldehyde to N,N dimethylaminopropylamine is 1:1; control the reaction temperature to 50°C, N , after the dropwise addition of N-dimethylaminopropylamine, continue to control the temperature and stir the reaction for 1.5h;

[0062] (b) cooling the reaction solution in step (a) in an ice-water bath, adding potassium hydroxide, controlling the temperature below 25°C, separating the organic phase, and then vacuum distillation to obtain PC-41; ...

Embodiment 2

[0073] The difference between this example and Example 1 is that the mass percentage of the amine co-initiator is 5%, the base material accounts for 92.5%, and the rest is ITX; other parameters and conditions are exactly the same as those in Example 1.

Embodiment 3

[0075] The difference between this embodiment and Embodiment 1 is that ITX quality is replaced by JRCure-1508, and other parameters and conditions are exactly the same as those in Embodiment 1.

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Abstract

The invention relates to an amine co-initiator and a preparation method and application thereof. The structure of the amine co-initiator comprises amido and a triazine ring structure, the amine co-initiator is mixed with a hydrogen abstracting type photoinitiator for use, the curing rate can be effectively increased, yellowing after curing is relieved, oxygen inhibition is inhibited, and then the application effect of the amine co-initiator is improved; compared with EHA and EDB adopted by a traditional light curing system, the amine co-initiator has the advantages that the curing rate is obviously increased, and the curing effect is obviously improved; and the use amount of the amine co-initiator in a photocuring composition is small, and the cost is low.

Description

technical field [0001] The invention belongs to the field of light-curing materials, and relates to an amine co-initiator and its preparation method and application. Background technique [0002] Photocuring technology is a new green technology that came out in the 1960s. It refers to the process of forming solid products through crosslinking and polymerization of liquid oligomers (including monomers) under the action of light (ultraviolet or visible light). At the International Conference on Radiation Curing in North America, photocuring technology was summarized as having "5E" characteristics, namely Efficient, Enabling, Economical, Energy Saving and Environmental Friendly. ; At present, light curing technology has been widely used in coatings, inks, adhesives, microelectronics, dental restoration and biomaterials and other fields. [0003] Photopolymerization is essentially photoinitiated polymerization and crosslinking reactions; photopolymerization systems generally in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/48C07D251/04
CPCC08F2/48C07D251/04
Inventor 张齐董月国姚娜刘凌志
Owner TIANJIN JIURI NEW MATERIALS CO LTD
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