UV-resistant ink positive image UV-CTP lithographic printing plate

A UV-CTP, lithographic printing plate technology, applied in the direction of printing, printing process, pattern surface photoplate making process, etc., can solve the problem of poor solvent resistance and printing resistance, large developing latitude, good solvent resistance, etc. problems, to achieve the effects of strong printing resistance, large developing latitude, and high film retention rate of alkali resistance

Active Publication Date: 2018-06-29
LUCKY HUAGUANG GRAPHICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing UV-CTP technology has poor solvent resistance and printing resistance, and is not suitable for UV ink printing. In order to solve the above problems, the present invention provides a brand-new multi-layer Structured solvent-resistant vinyl polymer as the main film-forming resin, double-layer UV-resistant ink positive UV-CTP lithographic printing plate material, the UV-CTP plate has high sensitivity, good storage stability, and developing latitude Large, good solvent resistance, high printing force

Method used

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  • UV-resistant ink positive image UV-CTP lithographic printing plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1 (emulsion particles 01)

[0044] Add 250 g of isopropanol, 150 g of deionized water, 24 g of N, N-dimethylformamide, 34 g of methyl acrylate, and 5 g of dioctylsuccinate into a 1000 ml three-necked flask equipped with a stirrer, a reflux tube, and a dropping funnel. Acid sodium, 1 g AIBN (azobisisobutyronitrile), stir well, and use a hot water bath to heat to 80 ° C, dropwise add 27 g of acrylonitrile, 5 g of methacrylic acid, 0.5 g of AIBN (azobisisobutyronitrile ) was dissolved in 150g isopropanol to form a mixed solution, added dropwise in 1 hour, reacted for 1 hour, then added dropwise 10g N-(4-sulfonamidobenzene) maleimide, 0.5g AIBN (azobis Isobutyronitrile) is dissolved in the mixed solution that 100g Virahol forms, and 1 hour dropwise is completed. The reaction was completed after 10 hours at a constant temperature, and emulsion particles 01 were obtained.

[0045] The solid content is 18.3%, the weight average molecular weight is 25000, and the numb...

Embodiment 2

[0046] Example 2 (emulsion particles 02)

[0047] Add 250 g of isopropanol, 150 g of deionized water, 15 g of N,N-dimethylformamide, 20 g of methyl acrylate, and 5 g of dioctylsuccinate into a 1000 ml three-necked flask equipped with a stirrer, a reflux tube, and a dropping funnel. Acid sodium, 1.2 g AIBN (azobisisobutyronitrile), stir evenly, and use a hot water bath to heat to 80 ° C, dropwise add 31 g of N-(4-sulfonamidobenzene) maleimide, 30 g of 3- Acrylonitrile, 4 g of methacrylic acid, 0.8 g of AIBN (azobisisobutyronitrile) were dissolved in a mixed solution of 250 g of isopropanol, and the addition was completed dropwise in 1.5 hours. After 9 hours of reaction at constant temperature, the emulsion particles 02 were obtained.

[0048] The solid content is 16.1%, the weight average molecular weight is 32000, and the number average molecular weight is 2300.

Embodiment 3

[0049] Example 3 (emulsion particles 03)

[0050] In a 1000ml three-necked flask equipped with a stirrer, a reflux tube, and a dropping funnel, add 250 g of isopropanol, 150 g of deionized water, 30 g of N-(4-hydroxybenzene) methacrylamide, 10 g of methyl acrylate, 5 g Dioctyl sodium succinate, 1.2 g AIBN (azobisisobutyronitrile), stir evenly, and use a hot water bath to heat to 80 ° C, dropwise add 25 g N-(4-acetoxyphenyl) maleimide Amine, 30g of acrylonitrile, 5g of methacrylic acid, and 0.8g of AIBN (azobisisobutyronitrile) were dissolved in a mixed solution of 250g of isopropanol, and the addition was completed dropwise in 2 hours. After 10 hours of reaction at constant temperature, the emulsion particle 03 was obtained.

[0051] The solid content is 14.2%, the weight average molecular weight is 30000, and the number average molecular weight is 2100.

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PUM

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Abstract

The invention relates to an UV-resistant ink positive image UV-CTP lithographic printing plate. The UV-resistant ink positive image UV-CTP lithographic printing plate comprises a plate support, wherein the support is coated with a resin layer with relatively good solvent resistance and alkali solubility; the resin layer is coated with a positive image-type photosensitive layer, and comprises film-forming resin, background dye and a chaotropic agent; the film-forming resin is a multi-layered anti-solvent vinyl polymer. The UV-resistant ink positive image UV-CTP plate has the characteristics ofhigh sensitivity, good storage stability, a large development latitude, good solvent resistance and high printing durability.

Description

technical field [0001] The invention belongs to the technical field of lithographic printing plates, and in particular relates to a plate material for positive UV-CTP lithographic printing plates resistant to UV ink. Background technique [0002] With the development of printing digitalization, especially pre-press digitalization, CTP technology has developed rapidly. UV-CTP technology is another mainstream CTP technology besides thermal and violet laser CTP technology. It has developed rapidly in recent years. During the All in Print China Shanghai China in 2003, Shanghai Wirth Image Technology and Basysprint jointly launched the first generation of UV-CTP plate making equipment in China. At the end of 2008, Hangzhou Kelei launched the Launched China's first UV-CTP plate-making machine. Compared with heat-sensitive and violet laser CTP, UV-CTP has obvious cost advantages. It has a lower price and can give full play to the potential performance of traditional PS plates. The...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/44C08F220/06C08F222/40C08F22/02C09D133/12C09D133/18C09D135/00G03F7/004G03F7/039B41N1/14
CPCB41N1/14C08F220/14C08F220/44C08F222/40C09D133/12C09D133/18C09D135/00C08F222/408G03F7/004G03F7/039C08F220/06C08F222/02C08F220/42
Inventor 张林孔祥丽程斌吴东璟张苗苗
Owner LUCKY HUAGUANG GRAPHICS
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