Positive type infrared light responsive composition, positive type printing plate and method of use thereof

A composition and infrared light technology, applied in the field of printing plates, can solve problems such as unstable plate quality, achieve good preservation performance, high sensitivity, and good repayment

Active Publication Date: 2009-05-27
LUCKY HUAGUANG GRAPHICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the existing boards that the quality of the boards becomes unstable over time, and to provide a high-sensitivity, storage Positive-working IR-sensitive composition with good performance, good print resistance and good chemical resistance

Method used

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  • Positive type infrared light responsive composition, positive type printing plate and method of use thereof
  • Positive type infrared light responsive composition, positive type printing plate and method of use thereof
  • Positive type infrared light responsive composition, positive type printing plate and method of use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of Infrared Sensitive Composition

[0031] (a) Synthesis of Hydrophilic Polymer I

[0032] Add 500ml of absolute ethanol into a 1L four-necked round-bottomed flask equipped with a sealed mechanical stirring device, a reflux condenser, a dropping funnel, and a nitrogen gas introduction tube, start stirring, pass in dry nitrogen, and bubble for 15 minutes. Heat the water bath to 60°C. After the temperature is constant, add a solution consisting of 144g of acrylic acid, 142g of acrylamide, 1g of benzoyl peroxide and 200ml of absolute ethanol from which the polymerization inhibitor has been removed, and drop it in 30 minutes. After maintaining the reaction at 60° C. for 5 hours, 1 g of benzoyl peroxide was added to maintain the temperature, and the reaction was continued for 10 hours before the reaction was terminated. The reaction mixture was naturally cooled to room temperature.

[0033] The cooled reaction solution was dropped into 5 L of acetone equipp...

Embodiment 2

[0051] (1) Preparation of Infrared Sensitive Composition

[0052] (a) Synthesis of Hydrophilic Polymer II

[0053] Add 500ml of absolute ethanol into a 1L four-necked round-bottomed flask equipped with a sealed mechanical stirring device, a reflux condenser, a dropping funnel, and a nitrogen gas introduction tube, start stirring, pass in dry nitrogen, and bubble for 15 minutes. Heat the water bath to 60°C. After the temperature is constant, add a solution consisting of 129g of methacrylic acid, 213g of acrylamide, 1g of benzoyl peroxide and 300ml of absolute ethanol from which the polymerization inhibitor has been removed, and drop it in 30 minutes. After maintaining the reaction at 60° C. for 5 hours, 1 g of benzoyl peroxide was added to maintain the temperature, and the reaction was continued for 10 hours before the reaction was terminated. The reaction mixture was naturally cooled to room temperature.

[0054] The cooled reaction solution was dropped into 5 L of acetone e...

Embodiment 3

[0072] (1) Preparation of Infrared Sensitive Composition

[0073] (a) Synthesis of Hydrophilic Polymer III

[0074] Add 500ml of absolute ethanol into a 1L four-necked round-bottomed flask equipped with a sealed mechanical stirring device, a reflux condenser, a dropping funnel, and a nitrogen gas introduction tube, start stirring, pass in dry nitrogen, and bubble for 15 minutes. Heat the water bath to 60°C. After the temperature is constant, add a solution consisting of 172g of methyl acrylate, 213g of acrylamide, 1g of benzoyl peroxide and 300ml of absolute ethanol from which the polymerization inhibitor has been removed, and drop it in 30 minutes. After maintaining the reaction at 60° C. for 5 hours, 1 g of benzoyl peroxide was added to maintain the temperature, and the reaction was continued for 10 hours before the reaction was terminated. The reaction mixture was naturally cooled to room temperature.

[0075] The cooled reaction solution was dropped into 5 L of acetone e...

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Abstract

The invention discloses a male pattern infrared light sensitizing composition and a printing plate made of the composition and an application method of the printing plate. The composition mainly contains (1) 45-74 parts by weight of hydrophilic polymer, (2) 5-30 parts by weight of etherified amino resin, and (3) 5-25 parts by weight of infrared absorption agent. The male pattern infrared light sensitizing composition has the advantages of high light sensitivity, good preservation property, good printing resistance and good chemical resistance. The provided photolithography plate has the advantages of high light sensitivity and good mesh point reducibility, and can be directly mounted on a photolithography machine for printing after exposure.

Description

technical field [0001] The invention relates to a photosensitive composition, in particular to a photosensitive composition for making a positive-working printing plate, and to a printing plate prepared with the composition and a use method thereof. Background technique [0002] In the traditional "wet" offset printing workflow, the plate is generally composed of a hydrophilic plate base and a resin layer coated on it. After exposure and development, the plate that can be printed on the machine is obtained. The plate The image area of ​​the image is hydrophilic, and the blank area is ink-friendly. During printing, the image part is hydrophilic and repels water, and the blank part is hydrophilic and repels ink, so that the ink is attached to the image part of the plate to form a printed image, and then the ink is transferred to the substrate such as paper and cloth through the transfer process. , metal foil, etc., to complete the printing process. The resin layer of the pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41C1/055B41M5/36
CPCB41C1/1008B41C2210/02B41C2210/08
Inventor 江磊赵伟建薛新琴张振亚
Owner LUCKY HUAGUANG GRAPHICS
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