An environment-friendly treatment-free photosensitive adhesive

Abstract

The invention relates to an environment-friendly treatment-free photosensitive glue, which is composed of the following components by weight: 8-10 parts of infrared absorbing dyes, and the absorption spectrum wavelength of the infrared absorbing dyes is 700nm-1100nm; nanometer polymer microspheres 45-60 parts, 6-8 parts of emulsifier, said emulsifier is amphiphilic emulsifier glyceryl monostearate; 45-60 parts of deionized water; 10-20 parts of nano iodine simple substance; 10-20 parts of volatile organic solvent 20 parts; 3-5 parts each of oxidizing agent and reducing agent. The present invention improves its storage time by introducing light-shielding materials into the colloid, and can be stored for a long time even under the irradiation of (natural light source) light.

Description

technical field [0001] The invention relates to the field of photosensitive materials, in particular to an environment-friendly treatment-free photosensitive adhesive. Background technique [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 hydrophilic and oleophobic. Using the principle of water and oil incompatibility, the separation of the graphic area and the non-gra...

AI Technical Summary

Problems solved by technology

However, there are many problems in this system: First, because the infrared absorbing dye is difficult to dissolve in water, during the compounding process, organic solvents will be mixed in to increase the compatibility of the dye, which will reduce the stability of the emulsion and make the emulsion not environmentally friendly.

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

Third, the combination of infrared absorbing dye and emulsion is a multi-system, which increases the difficulty of system preparation

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.

[0004] Although the above-mentioned patent solves the storage time, it is only limited to the case of no light irradiation. Once it is exposed to light due to its own infrared absorption properties, it is very prone to photochemical reactions, making storage unstable.

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