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A kind of quick-drying type acrylate polymer and preparation method thereof

A technology of acrylate and methyl methacrylate, which is applied in the field of quick-drying acrylate polymers and their preparation, can solve the problems of inability to meet product requirements, poor vacuum suction, and inability to carry out industrialization promotion, etc. Excellent sensitivity and resolution, excellent non-stick chirality, and the effect of meeting the requirements of high-precision circuit etching

Active Publication Date: 2016-07-06
WUXI DERBELL PHTO ELECTRONICS MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In recent years, with the miniaturization, light weight, high performance, and high-density mounting of electrical equipment, the printed circuit board industry has continuously reduced the line width and line spacing of its lines, and the resolution of traditional line inks has been unable to reach the product. Requirements, increasing the exposure energy will cause poor vacuum suction, the circuit cannot be resolved, and reducing the exposure energy will cause a series of problems such as open circuit gaps
Many PCB manufacturers use expensive dry film instead of traditional line ink to meet product requirements in products with high precision requirements; however, increasing the use of photosensitive monomers and photoinitiators in traditional line ink can improve its Analytical ability, but its dryness to touch (non-sticky hand) is significantly worse, and it cannot be promoted in industrialization

Method used

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  • A kind of quick-drying type acrylate polymer and preparation method thereof

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example 1

[0060] (1), add 360g o-cresol novolak epoxy resin, 125g acrylic acid, 2.5g as triphenylphosphine, 450g propylene glycol methyl ether acetate in the 2L detachable flask that possesses thermometer, reflux condenser, stirrer As a solvent, heat up to 115°C for 12 hours, then cool to 60°C, add 250g of phthalic anhydride and 0.8g of p-methoxyphenol as a polymerization inhibitor, heat up to 100°C for 8 hours, then cool down to Add 100 g of glycidyl methacrylate and 0.6 g of hydroquinone as a polymerization inhibitor after 60 ° C, and control the temperature at 95 ° C for 8 hours to obtain a quick-drying carboxyl-containing photosensitive resin of the present invention; The fast-drying carboxyl group-containing photosensitive resin has a solid content of 65wt%, an acid value of 55-65 mgKOH / g, and an average molecular weight of 10,000;

[0061] (2) Add 90g of acrylic acid, 480g of propylene glycol methyl ether acetate into a 2L detachable flask equipped with a thermometer, a reflux con...

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Abstract

The invention relates to a quick drying acrylate polymer, which is characterized in that the acid value is 40-150KOH / g; the solid content is 40-70wt%, and the average molecular weight is 5,000-10,000. The invention also relates to a preparation method for the quick drying acrylate polymer. The quick drying acrylate polymer has the advantages that the finger touch dryness (non-stickiness) of a coating formed by an alkali development type photosensitive resin composition containing the quick drying acrylate polymer is good and excellent photosensitivity and resolution can be gained under low energy, so that the requirement for etching high-precision circuits can be met.

Description

technical field [0001] The invention relates to a quick-drying acrylate polymer, in particular to a quick-drying acrylate polymer and a preparation method thereof. Background technique [0002] Traditionally, in the manufacture and production of printed circuit boards (PCB), line inks are used for the purpose of line formation. The so-called circuit ink refers to covering the copper surface of the substrate, using exposure and alkaline development to carry out image transfer, and forming a coating film with a specific pattern, so as to achieve anti-etching and form a protective material for a specific circuit. [0003] In recent years, with the miniaturization, light weight, high performance, and high-density mounting of electrical equipment, the printed circuit board industry has continuously reduced the line width and line spacing of its lines, and the resolution of traditional line inks has been unable to reach the product. Requirements, increasing the exposure energy wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/28C08F220/06G03F7/027G03F7/004
Inventor 朱贤红
Owner WUXI DERBELL PHTO ELECTRONICS MATERIAL
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