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Photocureable etching-resistant printing ink

A light-curing, anti-etching technology, used in inks, optics, optomechanical equipment, etc., can solve the problems of insoluble UV-curing and anti-etching inks, such as de-filming, difficulty, etc., to improve efficiency, product quality, and good solubility Effect

Inactive Publication Date: 2005-11-09
RONGDA PRINTING INK HUIZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the current UV-curable anti-etching ink is insoluble in dilute alkali aqueous solution and the problem that the UV-curable anti-etch ink is difficult to remove the film, the present invention will provide a kind of solvent that has good solubility in alkaline water and is easy to use with alkali. Ink removed by aqueous solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First synthesize the alkali-water soluble resin that the present invention adopts: In reactor, add o-cresol glycidyl ether 200g (epoxy equivalent is 140), acrylic acid 102 grams, hydroquinone 0.5 gram, N, N-dimethylbenzyl 2 grams of amine, heated to 95-105 ° C for 15 hours, the acid value was measured to be less than 5, added 120 g of phthalic anhydride, reacted at 90-95 ° C for 6 hours, cooled and discharged, and a light yellow liquid photosensitive compound with an acid value of 105 was obtained. Alkali-soluble resin (a).

[0019] The obtained photosensitive alkali-soluble resin (a) 40g, photosensitive diluent: 23g of acrylate hydroxyethyl ester, photoinitiator: 907 (Ciba company photosensitizer) 6g, filler: talcum powder 20g, barium sulfate 10g, pigment: titanium Cyan blue 1g, auxiliary agent: dispersant 0.5g, leveling agent 0.5g, defoamer 0.2g, mix and grind to fineness less than 15um with three-roll mill, obtain a kind of photocurable alkali-soluble type of the pre...

Embodiment 2

[0021] Add 200g of hydroxyethyl acrylate, 150g of phthalic anhydride, 0.5g of hydroquinone, 2g of N,N-dimethylbenzylamine into the reactor, heat to 90-95°C, and react for 6 hours to obtain acid A light yellow alkali-soluble photosensitive resin solution (b) with a value of 160.

[0022] The alkali-soluble resin (b) containing only one unsaturated group in the obtained molecule was substituted for the alkali-soluble resin (a) in Example 1, and ink was prepared in the same manner as in Example 1.

Embodiment 3

[0024] Only with the alkali-soluble resin that does not contain unsaturated group in the molecule, the maleic rosin resin (acid number 180) solution (80% solid content) 30g replaces the resin (a) in the embodiment 1, with the same method of the embodiment 1 into ink.

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PUM

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Abstract

An optically solidified ink resisting to etching for PCB features that it contains the resin soluble in the aqueous solution of alkali and photosensitive diluent, and its solidified film has linear molecular structure easy to dissolve in the aqueous solution of alkali.

Description

technical field [0001] The invention relates to a light-curing anti-etching ink, which is a light-curing anti-etching ink applied to the production of printed circuit board circuits. Background technique [0002] In the production of single-sided printed circuit boards and inner layers of multi-layer circuit boards, UV-curable anti-etching inks are currently used. Although this ink solves the needs of rapid curing and adapts to automated production, its cured film cannot be dissolved well. Due to the alkaline aqueous solution, it can only float in the alkaline water in the form of fragments. The filter equipment and nozzle facilities in the production line are often blocked by these flake inks, making production impossible; Difficulties also affect the efficiency of continuous automated production. Contents of the invention [0003] In order to solve the problem that the current UV-curable anti-etching ink is insoluble in dilute alkali aqueous solution and the problem tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/101
Inventor 杨遇春刘启升
Owner RONGDA PRINTING INK HUIZHOU
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