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Photosensitive resin for CTP plate and preparation method thereof

A technology of photosensitive resin and epoxy resin, applied in the field of photosensitive resin and its preparation, can solve the problems of low photosensitivity, solvent resistance and slow curing speed of photosensitive resin

Pending Publication Date: 2021-08-13
安徽强邦新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the photosensitive system CTP plate includes silver salt diffusion plate, high-sensitivity resin plate and silver salt / PS plate composite plate; in order to improve the performance of CTP plate, reduce environmental pollution, improve the solvent resistance and resistance of the plate Printing ability is the focus of research, but one of the most important methods to improve the solvent resistance and printing resistance of the board is the development of functional film-forming resins, among which the functionalization of photosensitive resins is the key research content, but the existing photosensitive The resin has low photosensitivity, slow curing speed, and is not resistant to solvents

Method used

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  • Photosensitive resin for CTP plate and preparation method thereof
  • Photosensitive resin for CTP plate and preparation method thereof
  • Photosensitive resin for CTP plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Modified polystyrene is made by the following steps:

[0047] Step 1. Add 0.25 mol of 2-aminophenol into a round bottom flask, then add 0.8 mol of acetic anhydride, and reflux for 1 hour. After the reaction, distill at 140°C for 5 minutes, then raise the temperature to 195°C, and collect fractions. A light yellow oily liquid intermediate 1 was obtained;

[0048] Step 2. Add 1.2mL of intermediate product 1, 18mL of N,N-dimethylformamide and 3g of potassium hydroxide in turn to the round bottom flask, stir magnetically at room temperature, and at the same time add 1.6mL of 4 -Ethanol solution of aminobenzaldehyde, stirred for 2 hours after the dropwise addition, transferred the reaction product to deionized water after the reaction, and precipitated white flocculent precipitates, left standing for 24 hours, filtered under reduced pressure, and dried to constant weight at 70°C , to obtain the intermediate product 2;

[0049] Step 3. Add 0.03mol of 2,4-diamino-3-trifluoro...

Embodiment 2

[0055] Modified polystyrene is made by the following steps:

[0056] Step 1. Add 0.26 mol of 2-aminophenol into a round bottom flask, then add 0.8 mol of acetic anhydride, and reflux for 1 hour. After the reaction, distill at 140°C for 7 minutes, then raise the temperature to 198°C, and collect fractions. A light yellow oily liquid intermediate 1 was obtained;

[0057] Step 2. Add 1.2mL of intermediate product 1, 19mL of N,N-dimethylformamide and 3g of potassium hydroxide in turn to the round bottom flask, stir magnetically at room temperature, and add 1.6mL of 4 -Ethanol solution of aminobenzaldehyde, stirred and reacted for 2 hours after the dropwise addition, after the reaction, the reaction product was transferred to deionized water, and a white flocculent precipitate was precipitated, left to stand for 24 hours, filtered under reduced pressure, and dried to constant weight at 72°C , to obtain the intermediate product 2;

[0058] Step 3. Add 0.03mol of 2,4-diamino-3-trif...

Embodiment 3

[0064] Modified polystyrene is made by the following steps:

[0065] Step 1. Add 0.27 mol of 2-aminophenol into a round bottom flask, then add 0.8 mol of acetic anhydride, and reflux for 1 hour. After the reaction, distill at 140°C for 8 minutes, then raise the temperature to 205°C, and collect fractions. A light yellow oily liquid intermediate 1 was obtained;

[0066] Step 2. Add 1.2mL of intermediate product 1, 20mL of N,N-dimethylformamide and 3g of potassium hydroxide in turn to the round-bottomed flask, stir magnetically at room temperature, and at the same time add 1.6mL of 4 -The ethanol solution of aminobenzaldehyde, stirred for 2 hours after the dropwise addition, transferred the reaction product to deionized water after the reaction, and precipitated white flocculent precipitate, left it for 24 hours, filtered under reduced pressure, and dried to constant weight at 75°C , to obtain the intermediate product 2;

[0067] Step 3. Add 0.03mol of 2,4-diamino-3-trifluorom...

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Abstract

The invention discloses photosensitive resin for a CTP plate, and belongs to the technical field of resin preparation, wherein the photosensitive resin comprises the following raw materials in parts by weight: 100-150 parts of epoxy resin, 48-56 parts of modified polystyrene, 0.1-0.15 part of a polymerization inhibitor, 30-38 parts of acrylic acid, 3-5 parts of a diluent and 1-1.1 parts of a catalyst. The invention also discloses a preparation method of the resin, wherein the preparation method comprises the steps: by utilizing an epoxy group capable of reacting with acrylic acid on a molecular chain of epoxy resin, controlling the reaction temperature and under the action of a catalyst, obtaining epoxy acrylate, adding the polymerization inhibitor to prevent the acrylic resin from generating a self-polymerization reaction under a high-temperature condition, and then adding the modified polystyrene, and blending to obtain the photosensitive resin for the CTP plate. The photosensitive resin for the CTP plate has the characteristics of high curing speed, strong adhesive force, high resolution ratio and high light transmittance while having better photosensitivity, and has great application value in preparation of the CTP plate.

Description

technical field [0001] The invention belongs to the technical field of resin preparation, and in particular relates to a photosensitive resin for a CTP plate and a preparation method thereof. Background technique [0002] CTP version (Computer to plate): From the computer directly to the printing plate, that is, "offline direct plate making". It was first developed from photo-to-plate making, using computer-controlled laser scanning imaging, and then printing plates through developing, fixing and other processes. This technology eliminates the intermediate medium of film, so that text and images can be directly converted into digital, reducing the quality loss and material consumption in the intermediate process. [0003] There are four main types of CTP plates according to the plate-making imaging principle: CTP plates of photosensitive system, CTP plates of thermal system, CTP plates of purple laser system and CTP plates of other systems. Among them, the photosensitive s...

Claims

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Application Information

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IPC IPC(8): G03F7/004C08F8/30C08F8/24C08F112/08
CPCG03F7/004C08F8/30C08F8/24C08F112/08
Inventor 孙长义郭俊成李长华
Owner 安徽强邦新材料股份有限公司
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