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Polymer emulsion containing infrared absorption dye and preparation method thereof

A technology of polymer emulsion and infrared absorption, applied in the direction of photosensitive materials used in optomechanical equipment, etc., can solve the problems of reduced sensitivity of heat-sensitive materials, easy decomposition, and non-environmental protection of emulsions

Inactive Publication Date: 2013-05-01
大同昌盛化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] First, because infrared absorbing dyes are difficult to dissolve in water, organic solvents will be added to compatibilize the dyes during the compounding process, which will reduce the stability of the emulsion and make the emulsion not environmentally friendly.
[0007] Second, since the infrared absorbing dye is not covered by the polymer, it is easy to decompose when exposed to visible light for a long time, and the stability of the dye will decrease accordingly, which will reduce the sensitivity of the heat-sensitive material in the future
[0008] Third, the combination of infrared absorbing dye and emulsion is a multi-system, which increases the difficulty of system preparation
[0009] Fourth, the infrared absorbing dye and nanoparticles are in a separate state in the system. Under the action of infrared light, the polymer nanoparticles cannot be effectively broken and undergo a thermal phase change. The resulting image has a small contrast and is easy to break during the development process.

Method used

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  • Polymer emulsion containing infrared absorption dye and preparation method thereof
  • Polymer emulsion containing infrared absorption dye and preparation method thereof
  • Polymer emulsion containing infrared absorption dye and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Infrared absorbing dyes (structures such as Figure 7 ) 5%, polystyrene nanospheres 25%, sodium lauryl sulfate 3%, ethylene glycol 0.2%, and deionized water 66.8%.

[0068] Preparation:

[0069] Oil phase preparation, 5% infrared absorbing dye (structure such as Figure 7 ), 25% styrene was dissolved evenly and added to the reaction flask, and mixed evenly;

[0070] The water phase is prepared by adding: 66.8% of water, 3% of sodium lauryl sulfate, 0.2% of ethylene glycol and 6% of the tert-butyl hydroperoxide solution to the deionized water mass reaction flask, and stir evenly to obtain a mixed solution;

[0071] After the water phase and the oil phase prepared in the above two steps are uniformly mixed, they are stirred under a homogenizer for 8 minutes to obtain a pre-emulsified mixture.

[0072] Finally, at 30°C, after mechanical stirring and emulsification for 20 minutes, a 6% ferrous sulfate aqueous solution accounting for 3% of the mass of deionized water was...

Embodiment 2

[0074] Infrared absorbing dyes (structures such as Figure 8 ) 7%, Polymethyl Methacrylate Nanospheres 40%, Sodium Laureth Sulfate 10%, Glycerin 1.5%, and Deionized Water 41.5%.

[0075] Preparation:

[0076] Oil phase preparation, 7% infrared absorbing dye (structure such as Figure 8 ), 40% methyl methacrylate was dissolved evenly and added to the reaction bottle, and mixed evenly;

[0077] Water phase preparation, will include: water 41.5%, sodium lauryl ether sulfate 10%, glycerol 1.5% and the tert-butyl hydroperoxide aqueous solution that mass fraction is 9% accounts for 5% of deionized water mass and joins in reaction bottle, and stir evenly to obtain a mixed solution;

[0078] After the water phase and the oil phase prepared in the above two steps are uniformly mixed, they are stirred under a homogenizer for 10 minutes to obtain a pre-emulsified mixed liquid.

[0079] Finally, at 30°C, after mechanical stirring and emulsification for 20 minutes, an aqueous solution ...

Embodiment 3

[0081] Infrared absorbing dyes (structures such as Figure 9 ) 2%, polystyrene-acrylonitrile copolymer 30%, the copolymer composition mass ratio is 3:1, trideceth phosphate 5%, cetyl alcohol 0.4% and deionized water 62.6%.

[0082] Preparation method: the structure is shown in the figure

[0083] Prepare the oil phase, dissolve 2% infrared absorbing dye (9), 30% styrene and acrylonitrile in a mass ratio of 3:1, add it into the reaction bottle, and mix well;

[0084] Water phase preparation, will include: water 62.6%, trideceth phosphate 5%, cetyl alcohol 0.4% and tert-butyl hydroperoxide aqueous solution with a mass fraction of 5%, accounting for 3% of the mass of deionized water added into the reaction flask, and stir evenly to obtain a mixed solution;

[0085] After the water phase and the oil phase prepared in the above two steps are uniformly mixed, they are stirred under a homogenizer for 5 minutes to obtain a pre-emulsified mixture.

[0086] Finally, at 30°C, after me...

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Abstract

The invention provides a polymer emulsion containing infrared absorption dye and a preparation method thereof, and particularly relates to a free radical polymerization method for preparing a photosensitive material containing infrared absorption dye thermosensitive emulsion. The polymer emulsion contains the following components by weight percentage: (1) 1-10% of an infrared absorption dye; (2) 10-40% of nanometer polymer microspheres; (3) 1-10% of an emulsifier; (4) 0.1-2% of an assistant emulsifier; and (5) 50-90% of deionized water. The polymer emulsion prepared by the method provided by the invention can be used for preparing a precursor of a coating liquid absorbing near-infrared light with wavelength of 700-1100 nm; the emulsion subjected to coating and drying can enable polymer to generate physical and chemical changes from the inside under effect of near infrared laser with wavelength at 700-1100 nm, leading to thermotropic phase change of the macro structure, and imaging can be generated after water development; the emulsion can be stably stored for a long time; and polymer coating effectively stabilizes the infrared absorption dye.

Description

Background technique [0001] The invention relates to a polymer emulsion containing an infrared absorbing dye and a preparation method thereof, in particular to a photosensitive material for preparing a heat-sensitive emulsion containing an infrared absorbing dye by free radical polymerization. technical background [0002] In the field of general lithographic printing, the printing plate is the printing graphic carrier that transfers ink to the substrate. The graphic information on the original manuscript is transmitted to the printing plate, and the surface of the printing plate is divided into the inked graphic part and the non-inked blank part. When printing, the ink attached to the graphic part is transferred to the substrate under the action of pressure. The graphic part and the blank part on the lithographic printing plate have no obvious difference in height and are almost on the same plane. The graphic part is lipophilic and hydrophobic, and the blank part is hydro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F112/08C08F120/14C08F212/08C08F220/44C08F220/28C08F2/44C08F2/24C08F4/40G03F7/004
Inventor 李仲晓安粒卢华生蒲嘉陵
Owner 大同昌盛化工有限公司
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