A kind of photocurable ink and pcb board

A light-curing ink and carboxylation technology, applied in ink, optics, opto-mechanical equipment, etc., can solve the problems of poor alkaline etching resistance of protective layer, difficulty in meeting high-precision requirements for PCB board manufacturing, and poor resolution of ink layer. , to achieve the effect of good resistance to alkaline etching, excellent resolution, and slow development speed

Active Publication Date: 2022-04-22
SHANGHAI PHICHEM MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the embodiments of the present invention is to provide a light-curable ink and a PCB board, which can solve the problem of poor resolution of the ink layer formed by the light-curable ink, poor alkaline etching resistance of the protective layer, and difficulty in meeting high precision requirements. Manufacture of required PCB boards etc.

Method used

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  • A kind of photocurable ink and pcb board
  • A kind of photocurable ink and pcb board
  • A kind of photocurable ink and pcb board

Examples

Experimental program
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Effect test

Embodiment 1

[0119] This embodiment provides a photocurable ink, which includes the following components in parts by weight: 20 parts of carboxylated modified epoxy acrylate resin, 2 parts of (meth)acrylic copolymer resin, trimethylol 3 parts of propane tri(meth)acrylate, 2 parts of 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-acetone, 30 parts of talc, propylene glycol methyl ether acetate 39 parts, 2 parts of phthalocyanine blue, 1 part of leveling agent, 1 part of defoamer.

[0120] Among them, the (meth)acrylic acid copolymer resin is formed by copolymerization of acrylic acid with a mass fraction of 20% and methyl methacrylate with 80% respectively, with a weight average molecular weight of 30,000, a molecular weight distribution index of 1.95, and an acid value of 90 mgKOH / g. The Tg point is 110°C.

[0121] Carboxylation modified epoxy acrylate resin is carried out ring-opening reaction by o-methyl novolak epoxy of CYDCN-200 model and (meth)acrylic acid to generate novolac epoxy a...

Embodiment 2

[0134] The present embodiment provides a photocurable ink, which includes the following components in parts by weight: 15 parts of carboxylated modified epoxy acrylate resin, 10 parts of (meth)acrylic acid copolymer resin, dipentaerythritol hexa( 2 parts of methacrylate, 6 parts of benzoin dimethyl ether, 2 parts of 2-isopropyl thioxanthone, 20 parts of silicon dioxide, 35 parts of propylene glycol methyl ether acetate, 5 parts of phthalocyanine green, leveling 1 part of agent, 1 part of adhesion promoter, 3 parts of defoamer.

[0135] Among them, the (meth)acrylic acid copolymer resin is formed by copolymerization of 8% methacrylic acid, 82% methyl acrylate and 10% cyclopentene, with a weight average molecular weight of 20000, a molecular weight distribution index of 1.70, and an acid value of 50 mgKOH / g, the Tg point is 80°C, the total mass of methacrylic acid, methyl acrylate and cyclopentene is 100%, the mass fraction of methacrylic acid is 8%, the mass fraction of methyl...

Embodiment 3

[0138] This embodiment provides a photocurable ink, which includes the following components in parts by weight:

[0139] 35 parts of carboxylated modified epoxy acrylate resin, 1 part of (meth)acrylic acid copolymer resin, 2.8 parts of trimethylolpropane tri(meth)acrylate, 1,6-hexanediol di(meth)acrylic acid 1 part of ester, 2.8 parts of 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone, 1 part of benzoin ethyl ether, 25 parts of kaolin, ethylene glycol mono 30 parts of methyl ether, 0.1 part of azo yellow, and 0.1 part of defoamer.

[0140] Among them, the (meth)acrylic copolymer resin is formed by copolymerization of 25% acrylic acid and 75% methyl methacrylate, with a weight average molecular weight of 60,000, a molecular weight distribution index of 2.02, an acid value of 140 mgKOH / g, and a Tg point of 105 °C, based on the total mass of acrylic acid and methyl methacrylate as 100%, the mass fraction of acrylic acid is 25%, and the mass fraction of methyl methacryla...

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Abstract

The invention discloses a light-curing ink and a PCB board, belonging to the technical field of printed circuit boards. The light-curable ink comprises the following components in parts by weight: 15-35 parts of carboxylated modified epoxy acrylate resin, 1-10 parts of (meth)acrylic copolymer resin, 2-10 parts of polymerized monomer, and photoinitiator 1 to 8 parts, 20 to 40 parts of inorganic non-metallic fillers, and 30 to 60 parts of solvent; carboxylated modified epoxy acrylate resin is obtained by ring-opening reaction of (meth)acrylic acid and epoxy resin to obtain epoxy acrylate. Oxyacrylate is then obtained by ring-opening reaction with acid anhydride; (meth)acrylic copolymer resin is obtained by copolymerizing ethylenically unsaturated monomer and / or propylene unsaturated monomer with (meth)acrylic acid. The light-curable ink has the advantages of good resolution, good film stickiness, good hardness, good stacking performance, good alkali etching resistance, etc. It is suitable for the production of PCB inner layer circuit boards, especially for small line widths High-precision PCB inner layer circuit board production.

Description

technical field [0001] The invention relates to the technical field of printed circuit boards, in particular to a photocurable ink and a PCB board. Background technique [0002] Printed circuit board (PCB) is an important electronic component, which is generally obtained through processes such as coating photocurable ink, drying, covering a mask, exposing, developing, etching, and peeling off the protective layer of photocurable ink. Wherein, the photocurable ink forms an ink layer after drying, and when exposed to light, the ink layer can undergo cross-linking and curing or degradation reactions to form a protective layer. During development, the developer solution only dissolves the ink layer, while the remaining protective layer forms the same pattern as the mask plate. The neater the edge lines of the protective layer, the better the resolution of the light-curable ink, and the higher the manufacturing accuracy of the PCB board. . During etching, an alkaline solution i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/101C09D11/107C09D11/106C09D11/03G03F7/004G03F7/027
Inventor 汤进钟亮王林靖
Owner SHANGHAI PHICHEM MATERIAL CO LTD
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