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Radiosensitive composition

A radiation-sensitive and compositional technology, which is applied in the field of radiation-sensitive compositions, can solve the problems of poor printing image clarity and printing quality, lack of integrity in image areas, and inability to print effectively for a long time, so as to improve hardness and printing durability volume effect

Inactive Publication Date: 2012-10-24
FOUNDER FINE CHEM IND +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The common disadvantage of the above-mentioned technologies is that the displayed image area after the printing plate is developed often lacks integrity, and cannot be used for long-term effective printing, so that the definition and printing quality of the printed image produced are poor.

Method used

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  • Radiosensitive composition
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  • Radiosensitive composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] copolymerization polymer synthesis

[0040] The method for synthesizing the copolymerized polymer of the present invention and the ratio of the monomers are as follows, but not limited thereto.

[0041]

[0042]

[0043] Note: PMI=N-phenylmaleimide; MMA=methyl methacrylate; St=styrene; AN=acrylonitrile; ZDA=zinc acrylate

[0044] (copolymerization polymer synthesis method)

[0045] Put 35 grams of PMI, 30 grams of MMA, 35 grams of AN, 1 gram of initiator (Azobisisobutyronitrile (AIBN)) and 200 grams of solvent (DimethylFormamide, DMF) into a 500ml four-neck In the reaction flask, the four-neck flasks were respectively connected with stirring blades, thermometers, nitrogen and reflux tubes, and the temperature was controlled at 70°C for 24 hours. After the reaction was completed, the temperature was lowered and the reaction solution was poured into 6kg of water, and the copolymerized polymer would be in the water. Precipitate, filter and dry to obtain the copoly...

Embodiment 2

[0046] preparation of radiation-sensitive composition and heat-sensitive CTP printing plate

[0047] 20 grams of phenolic resin-Rezicure5200 (high-purity m-cresol phenolic resin, produced by SpecialCheme Company), 6 grams of phenolic resin- SD-1508 (bisphenol-based phenolic resin, produced by Hexion), 9.0 grams of copolymerized polymer (sample code P-1), 0.8 grams of radiation absorbing dye-cyanine dye IR dye 23b [PCAS] (dyes that can react under IR wavelength, produced by PCAS company), 0.24 grams of bis-trichloromethyl (4-methoxy) styryl triazine, 0.5 grams of colorant-Victoria blue, 0.5 grams Colorant-crystal violet lactone, 6ml of solvent ethyl acetate, and 104 grams of solvent-ethyl glycol acetate were stirred until completely dissolved, and the heat-sensitive radiation-sensitive composition of this embodiment was obtained.

[0048] In addition, prepare a piece of aluminum plate that has undergone hydrophilic treatment, and coat the above-mentioned heat-sensitive radia...

Embodiment 3

[0051] preparation of radiation-sensitive composition and heat-sensitive CTP printing plate

[0052] It is roughly the same as the positive thermosensitive CTP printing plate of Example 2, except that the copolymerized polymer whose sample number is P-2 is used.

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Abstract

The invention discloses a radiosensitive composition, which is composed of phenolic resin, a copolymer of a metal ion structure, an acid generator and a radiation absorptive dye and the like. The composition is coated on a proper substrate, and then roasted, exposed and developed to obtain an image. The image has good hardness, wear resistance and adherence and is beneficial to increase of printing capacity.

Description

technical field [0001] The present invention relates to a radiation-sensitive composition for lithographic printing plates. Background technique [0002] The characteristic of lithography is that the inked image area (image area) and the non-inked non-image area on the lithography are on the same plane. Wherein, the image area is lipophilic and hydrophobic, and the non-image area is hydrophilic and oleophobic. The operation method of lithographic printing is to use the immiscible characteristics of oil (oily substance or ink (ink)) and water to first apply water to the printing plate so that the non-image area forms a hydrophilic and oleophobic water film, and then apply The printing plate is inked, so that the image area is partially attached to the ink. Under the action of printing pressure, the graphics on the printing plate are transferred to the surface of paper or other substrates through the rubber cylinder. Typically the ink is transferred to a blanket known as an ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/004G03F7/039
Inventor 叶景裕杨明华林明贤陈世杰
Owner FOUNDER FINE CHEM IND