An environment-friendly organic dry film stripping liquid

A stripping solution, environmentally friendly technology, applied in opto-mechanical equipment, printed circuit liquid treatment, instruments, etc., can solve the problems of clogging of the tank liquid pipeline, unclean film stripping, easy short circuit in the line, etc., to achieve easy handling and low toxicity. , the effect of falling off completely

Inactive Publication Date: 2019-01-01
珠海特普力高精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 2. The traditional dry film stripping solution is mainly prepared by combining polar organic solvents and strong alkalis
The contact area between the "clamp film" and the stripping solution is small, and it is difficult for the stripping solution to infiltrate the "clamp film", resulting in unclean stripping of the film, and the circuit after etching is prone to short circuit and other abnormalities
Therefore, the use of traditional inorganic alkali solutions such as sodium hydroxide and potassium hydroxide has been unable to meet the requirements of fine line processing
[0004] 3. In the production process of circuit boards, most of them need to be coated with a layer of tin on the surface to protect the circuit, but tin is an amphoteric metal, which is easily attacked by inorganic strong alkali solution, so the use of inorganic alkali solution is also subject to certain restrictions
[0005] 4. After the plate is treated by the inorganic strong alkali stripping solution, the dry film will fall off in a whole piece (large piece), which will easily cause blockage of the bath liquid pipeline during the stripping process, seriously affecting the service life of the stripping solution and equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An environment-friendly organic dry film stripping solution, comprising the following volumes of raw materials: 5L of ethanolamine, 5L of methanol, 5L of polyethylene glycol-4005L, 0.1L of 5-methylbenzotriazole and 84.9L of deionized water.

[0019] A method for preparing an environment-friendly organic dry film stripping solution, comprising the following steps: 1) adding 10L of deionized water to a stirring tank, and starting the stirring; 2) sequentially adding 5L of ethanolamine, 5L of methanol, and polyethylene glycol to the stirring tank -400 5L and 5-methylbenzotriazole 0.1L; 3) Dilute to the 100L mark with deionized water, and stir well to prepare 100L stock solution.

Embodiment 2

[0021] An environment-friendly organic dry film stripping solution, including the following volumes of raw materials: 15L of mono-n-butylamine, 15L of di-n-butylamine, 10L of 1,2-butanediol, 10L of butanol, 10L of polyethylene glycol-400, poly Ethylene glycol-2000 5L, 5-carboxybenzotriazole 3L, 4-carboxybenzotriazole 2L and deionized water 30L.

[0022] A method for preparing an environment-friendly organic dry film stripping solution, comprising the following steps: 1) Add 10L of deionized water to a stirring tank, and start stirring; 2) Add 15L of mono-n-butylamine and di-n-butylamine to the stirring tank in sequence 15L, 1,2-butanediol 10L, butanol 10L, polyethylene glycol-400 10L, polyethylene glycol-2000 5L, 5-carboxybenzotriazole 3L, 4-carboxybenzotriazole 2L; 3 ) to the 100L mark with deionized water, and fully stirred to obtain a 100L stock solution.

Embodiment 3

[0024] An environmentally friendly organic dry film stripping solution, including the following volumes of raw materials: ethylenediamine 5L, isopropylamine 5L, isopropanol 10L, polyethylene glycol-800 8L, 2-oleic acid imidazoline 2L and deionized water 70L .

[0025] A method for preparing an environment-friendly organic dry film stripping solution, comprising the following steps: 1) Add 10L of deionized water to a stirring tank, and start stirring; 2) Add 5L of ethylenediamine, 5L of isopropylamine, and isopropylamine to the stirring tank in sequence Propanol 10L, polyethylene glycol-8008L, 2-oleic acid imidazoline 2L; 3) Dilute to the 100L mark with deionized water, and stir well to make 100L. stock solution.

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PUM

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Abstract

The invention discloses an environment-friendly organic dry film stripping liquid, which comprises the following raw materials in parts by volume: 5-30 parts of organic base, 5-20 parts of an organicsolvent, 5-15 parts of an inhibitor, 0.1-5 parts of a corrosion inhibitor and 30-85 parts of deionized water. The circuit board of the invention is used for treating fine lines: 1. the dry film fallsoff completely, and there is no residual ''pinching film'' phenomenon; 2. the invention doe not attack a tin plating layer; 3. the dry film is broken into small diaphragms so as not to cause blockageto a pipeline; and 4. toxicity is low and wastewater is relatively easy to treat.

Description

technical field [0001] The invention relates to the field of wafer production, in particular to an environment-friendly organic dry film stripping solution. Background technique [0002] 1. During the manufacturing process of the circuit board, the material can be effectively protected by covering a layer of dry film on the surface of the material, or a photosensitive film mask can be formed on the surface of the material, and the pattern can be transferred after exposure. Dry film is one of the important "imaging" technologies when transferring graphics. Before entering the next process, the remaining photosensitive film or dry film on the surface of the material needs to be peeled off (removal). In this process, it is required to remove all remaining photosensitive film or dry film, and not to corrode any substrate. [0003] 2. The traditional dry film stripper is mainly prepared by combining polar organic solvents and strong alkalis. However, with the development of mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/42H05K3/00
CPCG03F7/425H05K3/0085
Inventor 刘立志
Owner 珠海特普力高精细化工有限公司
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