CN101962775A - Sulfuric acid/hydrogen peroxide microetchant stabilizer and preparation method thereof - Google Patents

Sulfuric acid/hydrogen peroxide microetchant stabilizer and preparation method thereof Download PDF

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Publication number
CN101962775A
CN101962775A CN 201010296599 CN201010296599A CN101962775A CN 101962775 A CN101962775 A CN 101962775A CN 201010296599 CN201010296599 CN 201010296599 CN 201010296599 A CN201010296599 A CN 201010296599A CN 101962775 A CN101962775 A CN 101962775A
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hydrogen peroxide
sulfuric acid
etching solution
micro
stablizer
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CN101962775B (en
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何世武
崔磊
李建光
李明军
吴超
王大定
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ShenZhen JeCh Technology Co., Ltd.
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SHENZHEN JECH TECHNOLOGY Co Ltd
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Abstract

The invention is applied in the field of microetching, and provides a sulfuric acid/hydrogen peroxide microetchant stabilizer and a preparation method thereof. The sulfuric acid/hydrogen peroxide microetchant stabilizer comprises the following components in percentage by weight: 3 to 6 percent of alcohol, 10 to 15 percent of organic amine, 2 to 5 percent of sulfonic acid and 40 to 85 percent of water. High-negativity O and N atoms of the alcohol, the organic amine and the sulfonic acid in the stabilizer form hydrogen bonds with free groups [HO.2] decomposed by hydrogen peroxide, so the sulfuric acid/hydrogen peroxide microetchant stabilizer effectively reduces the activity of the [HO.2], greatly reduces the decomposition of the hydrogen peroxide, maintains the concentration of the hydrogen peroxide in microetchant, and ensures stable microetching rate in the microetching process of the sulfuric acid/hydrogen peroxide (H2SO4/H2O2) microetchant, and smooth, uniform and non-black board surfaces after the microetching.

Description

A kind of sulfuric acid/hydrogen peroxide micro-etching solution stablizer and preparation method thereof
Technical field
The invention belongs to the microetch field, relate in particular to a kind of sulfuric acid/hydrogen peroxide micro-etching solution stablizer and preparation method thereof.
Background technology
In the printed circuit board course of processing, many technologies all need to carry out the microetch pre-treatment, electroless copper plating, electric plating of whole board, graphic plating, the black oxidation of internal layer, hot air leveling or the like.The quality of microetch effect often influences the quality of next process.H 2SO 4/ H 2O 2Advantages such as micro-etching solution is more superior a kind of, and it has the microetch constant rate, and it is big to hold the copper amount, and aftertreatment is simple, and is pollution-free, but H 2SO 4/ H 2O 2Hydrogen peroxide decomposes easily in the system, can make plate face blackout, and microetch is inhomogeneous, thereby has improved the cost and the quantity discharged of material greatly, and the chlorion of trace also can make speed descend in the water, therefore, and H 2SO 4/ H 2O 2Being decomposed into of hydrogen peroxide influences H in the micro-etching solution 2SO 4/ H 2O 2The big problem that micro-etching solution is used.
Summary of the invention
In view of this, the embodiment of the invention provides sulfuric acid/hydrogen peroxide micro-etching solution stablizer, solves the technical problem that causes etching speed instability, etching panel blackout in the prior art owing to decomposing hydrogen dioxide solution.
The embodiment of the invention is achieved in that
A kind of sulfuric acid/hydrogen peroxide micro-etching solution stablizer, described sulfuric acid/hydrogen peroxide micro-etching solution stablizer comprises following components in weight percentage content:
Alcohol 3-6%
Organic amine 10-15%
Sulfonic group compound 2-5%
Water 40-85%.
The embodiment of the invention also provides the preparation method of a kind of sulfuric acid/hydrogen peroxide micro-etching solution stablizer, comprises the steps:
Following ingredients by weight percent is mixed, and stir process obtains the sulfuric acid/hydrogen peroxide micro-etching solution stablizer of the embodiment of the invention,
Alcohol 3-6%
Organic amine 10-15%
Sulfonic group compound 2-5%
Water 40-85%.
The sulfuric acid of the embodiment of the invention/hydrogen peroxide micro-etching solution stablizer is by the free group [HO of strong negativity O, N atom and the decomposing hydrogen dioxide solution of alcohol, organic amine and sulfonic acid in the stablizer 2] form hydrogen bond, effectively reduced [HO 2] activity, significantly reduced the decomposition of hydrogen peroxide, kept the concentration of hydrogen peroxide in the micro-etching solution, simultaneously, the stablizer of present embodiment also has good resistance effect to chlorion.Therefore, the stablizer of present embodiment guarantees at sulfuric acid/hydrogen peroxide (H 2SO 4/ H 2O 2) in the microetch process of micro-etching solution, the microetch rate stabilization, after the microetch, the plate face is smooth, evenly do not turn black.
The sulfuric acid of the embodiment of the invention/hydrogen peroxide micro-etching solution stablizer preparation method, simple to operate, with low cost, free from environmental pollution, be fit to suitability for industrialized production.
Description of drawings
Fig. 1 is the etching effect figure of the embodiment of the invention and Comparative Examples.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention provides a kind of sulfuric acid/hydrogen peroxide micro-etching solution stablizer, and this sulfuric acid/hydrogen peroxide micro-etching solution stablizer comprises following components in weight percentage content:
Alcohol 3-6%
Organic amine 10-15%
Sulfonic group compound 2-5%
Water 40-85%.
At sulfuric acid/hydrogen peroxide (H 2SO 4/ H 2O 2) in the micro-etching solution, hydrogen peroxide can decompose.H 2O 2Decomposition course be:
H 2O 2→2OH ·
Following (soon) reaction takes place then:
OH ·+H 2O 2→H 2O+HO · 2
2HO · 2→H 2O 2+O 2
Hydrogen peroxide can produce free radical [HO in decomposition 2], the decomposing hydrogen dioxide solution speed of response will depend on living radical [HO 2] quantity.[HO 2] structure be [O-O-H], O-H key easy fracture forms [O 2] and [H].The sulfuric acid of the embodiment of the invention/hydrogen peroxide micro-etching solution stablizer adds alcohol, organic amine, sulfonic acid.Contain strong negative O atom in the hydroxyl [OH] of alcohol, have strong electrophilic function; Have strong negative N atom in the amido of organic amine [NH-], have strong electrophilic function; Sulfonic group [SO in the sulfonic acid 3H] contain strong negative O atom, have more high-strength electrophilic function.Above-mentioned strong negative O, N atom can with [HO 2] in the hydrogen evolution hydrogen bond, the electronic cloud on [O-O] will to [O-H] skew, thereby strengthened [O-H] key, reduced [HO 2] activity, significantly reduced the decomposition of hydrogen peroxide.
Particularly, the alcohol of the embodiment of the invention comprises various alcohol, and for example monohydroxy-alcohol, dibasic alcohol or polyvalent alcohol use dibasic alcohol or polyvalent alcohol, require not take place between the hydroxyl on dibasic alcohol or the polyvalent alcohol steric restriction effect.For example ethanol, propyl alcohol, 1,4 butyleneglycol, ethylene glycol, propyl carbinol, propylene glycol, hexan-hexol are preferably in 1,4 butyleneglycol, ethylene glycol, propyl carbinol, the propylene glycol one or more, use two or more alcohol, and mass ratio separately without limits.The alcohol of the embodiment of the invention, also comprise the alcohol that contains sulfonic group or amido, thanomin for example, but the steric restriction effect does not take place between hydroxyl and sulfonic group or the amido, for example hydroxyl not can with sulfonic group generation steric restriction effect or hydroxyl not can with the effect of amido generation steric restriction.
The organic amine of the embodiment of the invention comprises one or more in monoamine, diamine and the polyamine, for example, methylamine, ethamine, aniline, benzylamine, triethylene diamine, triethylamine, trimethylammonium benzylamine, dimethylethanolamine, methylenediphenyl diamines, PAH and polymine.But comprise two or more amidos on the organic amine, require not exist between the amido steric restriction effect.Be preferably in thanomin, diethanolamine, n-Butyl Amine 99, the n-octyl amine one or more, use two or more organic amines, mass ratio separately without limits.The organic amine of the embodiment of the invention comprises also and contains for example amidosulfonic acid of hydroxyl or sulfonic organic amine, but the steric restriction effect does not take place between amido and hydroxyl or the sulfonic group that for example amido and hydroxyl, amido and sulfonic group the steric restriction effect can not take place.
The sulfonic group compound of the embodiment of the invention comprise in one in alkylsulphonic acid, aryl sulfonic acid, the amidosulfonic acid or more than; Contain a sulfonic group, two or more sulfonic sulfonic group compounds.Use comprises two or more sulfonic sulfonic acid, requires not take place between the sulfonic group steric restriction effect.Be preferably in hexanaphthene sulfonic acid, amidosulfonic acid, cyclopropane sulfonic acid, cyclohexylamine sulfonic acid and the tosic acid one or more, use two or more sulfonic group compounds, mass ratio separately without limits.The sulfonic group compound of the embodiment of the invention also comprises the sulfonic acid that contains hydroxyl or amido, but between sulfonic group and hydroxyl or the amido steric restriction effect does not take place, for example the steric restriction effect can not take place between sulfonic group and hydroxyl, sulfonic group and the amido.
Further, the H of the embodiment of the invention 2SO 4/ H 2O 2In the micro-etching solution stablizer, comprise that also weight percentage is the sulfuric acid of 2-5%, vitriolic concentration is preferably 98% sulfuric acid without limits.By in stablizer, adding sulfuric acid, can prevent the volatilization of organic amine, keep the effect of embodiment of the invention stablizer.Make the stablizer and the sulfuric acid/hydrogen peroxide micro-etching solution of the embodiment of the invention have good intermiscibility simultaneously.
Sulfuric acid/hydrogen peroxide (H of the embodiment of the invention 2SO 4/ H 2O 2) the micro-etching solution stablizer, by the free group [HO of the strong negativity O in the stablizer, N atom and decomposing hydrogen dioxide solution 2] form hydrogen bond, significantly reduced the decomposition of hydrogen peroxide, kept the concentration of hydrogen peroxide in the micro-etching solution, simultaneously, the stablizer of the embodiment of the invention has good resistance effect to the chlorion in the micro-etching solution, guarantees at sulfuric acid/hydrogen peroxide (H 2SO 4/ H 2O 2) in the microetch process of micro-etching solution, the microetch rate stabilization, after the microetch, the plate face is smooth, all with not turn black.
The embodiment of the invention also provides the preparation method of a kind of sulfuric acid/hydrogen peroxide micro-etching solution stablizer, and step is as follows:
Following ingredients by weight percent is mixed, and stir process obtains the sulfuric acid/hydrogen peroxide micro-etching solution stablizer of the embodiment of the invention,
Alcohol 3-6%
Organic amine 10-15%
Sulfonic group compound 2-5%
Water 40-85%.
Further, among the preparation method of the sulfuric acid of the embodiment of the invention/hydrogen peroxide micro-etching solution stablizer, after the said components mixing, add the sulfuric acid of 3-5% again, this vitriolic concentration is preferably 98% sulfuric acid without limits.Above-mentioned stir process is carried out at normal temperatures and pressures, and the time preferably under the 0.8-1.3 atmospheric pressure, stirred 30-60 minute without limits.
The preparation method of the sulfuric acid of the embodiment of the invention/hydrogen peroxide micro-etching solution stablizer, simple to operate, raw materials cost is cheap, is suitable for suitability for industrialized production.
Sulfuric acid/hydrogen peroxide micro-etching solution stablizer below in conjunction with specific embodiment is described in detail.
Embodiment one
The micro-etching solution stablizer of present embodiment, its component and weight percent are as follows:
1,4 butyleneglycol 3%
Thanomin 3%, n-Butyl Amine 99 7%
Amidosulfonic acid 2%
Sulfuric acid 3%
Water 83%.
According to the aforementioned proportion preparation, the ratio of content 0.5-2 ‰ is added to H with above-mentioned micro-etching solution stablizer by weight 2O 2Concentration is 12g/L, H 2SO 4Concentration is in the micro-etching solution of 120g/L, measures microetch speed when temperature is 30 ℃.
Embodiment two
The micro-etching solution stablizer of present embodiment, its component and weight percent are as follows:
1,4 butyleneglycol 5%
N-octyl amine 12%
Cyclopropane sulfonic acid 3%
Sulfuric acid 3%
Water 77%.
According to the aforementioned proportion preparation, the ratio of content 0.5-2 ‰ is added to H with above-mentioned micro-etching solution stablizer by weight 2O 2Concentration is 12g/L, H 2SO 4Concentration is in the micro-etching solution of 120g/L, measures microetch speed when temperature is 30 ℃.
Embodiment three
A kind of micro-etching solution stablizer, its component and weight percent are as follows:
Ethylene glycol 5%
Thanomin 8%, n-Butyl Amine 99 7%
Cyclohexylamine sulfonic acid 5%
Sulfuric acid 5%
Water 70%.
According to the ratio preparation, be added to H by 0.5-2 ‰ 2O 2Concentration is 12g/L, H 2SO 4Concentration is to measure microetch speed in the micro-etching solution of 120g/L when 30 ℃ of temperature.
Comparative Examples
Use H 2O 2Concentration is 12g/L, H 2SO 4Concentration be the micro-etching solution of 120g/L as blank, when temperature is 30 ℃, measure microetch speed.Microetch speed is 7, and plate face blackout has seal, when opening cylinder with tap water, and plate face blackout, microetch speed is 0.
See also Fig. 1, Fig. 1 shows the embodiment of the invention and Comparative Examples microetch effect situation, in embodiment one, embodiment two and embodiment three, the microetch speed of micro-etching solution is more than 10, along with the increase of stabilizer concentration of the present invention, the microetch speed of micro-etching solution is increasing gradually, and ascendant trend is in line.In Comparative Examples, do not add stablizer of the present invention, so its microetch speed has only 7.This micro-etching solution stablizer that proves absolutely the embodiment of the invention has active effect to reducing the decomposition of hydrogen peroxide.In the Comparative Examples, along with the carrying out of time, the microetch speed of micro-etching solution reduces (this does not show in the accompanying drawings) gradually.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. sulfuric acid/hydrogen peroxide micro-etching solution stablizer, described sulfuric acid/hydrogen peroxide micro-etching solution stablizer comprises following components in weight percentage content:
Alcohol 3-6%
Organic amine 10-15%
Sulfonic group compound 2-5%
Water 40-85%.
2. sulfuric acid as claimed in claim 1/hydrogen peroxide micro-etching solution stablizer is characterized in that, described alcohol be in monohydroxy-alcohol, dibasic alcohol or the polyvalent alcohol one or more.
3. sulfuric acid as claimed in claim 2/hydrogen peroxide micro-etching solution stablizer is characterized in that described alcohol is one or more in 1,4 butyleneglycol, ethylene glycol, propyl carbinol, the propylene glycol.
4. sulfuric acid as claimed in claim 1/hydrogen peroxide micro-etching solution stablizer is characterized in that described organic amine is one or more in monoamine, diamine and the polyamine.
5. sulfuric acid as claimed in claim 1/hydrogen peroxide micro-etching solution stablizer is characterized in that described organic amine is one or more in thanomin, diethanolamine, n-Butyl Amine 99, the n-octyl amine.
6. sulfuric acid as claimed in claim 1/hydrogen peroxide micro-etching solution stablizer is characterized in that, described sulfonic group compound is one or more in alkylsulphonic acid, aryl sulfonic acid, the amidosulfonic acid.
7. sulfuric acid as claimed in claim 1/hydrogen peroxide micro-etching solution stablizer is characterized in that, described sulfonic group compound is one or more in cyclohexylamine sulfonic acid, amidosulfonic acid, the cyclopropane sulfonic acid.
8. sulfuric acid as claimed in claim 1/hydrogen peroxide micro-etching solution stablizer is characterized in that, described sulfuric acid/hydrogen peroxide micro-etching solution stablizer comprises that also weight percentage is the sulfuric acid of 3-5%.
9. sulfuric acid/hydrogen peroxide micro-etching solution stablizer preparation method comprises the steps:
Following ingredients by weight percent is mixed, and stir process obtains sulfuric acid/hydrogen peroxide micro-etching solution stablizer,
Alcohol 3-6%
Organic amine 10-15%
Sulfonic group compound 2-5%
Water 40-85%.
10. sulfuric acid as claimed in claim 7/hydrogen peroxide micro-etching solution stablizer preparation method is characterized in that, after said components is mixed, adds the sulfuric acid of 3-5% again.
CN201010296599XA 2010-09-29 2010-09-29 Sulfuric acid/hydrogen peroxide microetchant stabilizer and preparation method thereof Active CN101962775B (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103451716A (en) * 2012-05-31 2013-12-18 际华三五二二装具饰品有限公司 Plating layer stripping corrosion solution
CN103572291A (en) * 2012-07-25 2014-02-12 苏州协鑫光伏科技有限公司 Corrosive liquid for electroplated diamond wire saw coating and wire saw broken-wire connection method
CN104532240A (en) * 2014-12-31 2015-04-22 东莞市富默克化工有限公司 Coarse micro-etching agent used in circuit board and preparation method of coarse micro-etching agent
CN105734571A (en) * 2016-04-21 2016-07-06 广州恩源化工科技有限公司 Metal surface micro-etching liquid
CN107142711A (en) * 2017-06-21 2017-09-08 清远市金沣顺助剂有限公司 A kind of hydrogen peroxide cold bleaching catalyst and its preparation method and application
CN110856348A (en) * 2019-10-09 2020-02-28 广东利尔化学有限公司 Neutralizing and reducing agent for PCB (printed circuit board) glue removal post-treatment
CN111020586A (en) * 2019-12-31 2020-04-17 苏州天承化工有限公司 Environment-friendly rack stripping solution for stripping copper and tin and copper and tin stripping method using environment-friendly rack stripping solution
CN111041487A (en) * 2019-12-31 2020-04-21 苏州天承化工有限公司 Environment-friendly PCB electroplating rack copper stripping liquid and copper stripping method using same
CN112342546A (en) * 2020-10-23 2021-02-09 珠海隆康电子科技有限公司 Microetching stabilizer and preparation method thereof
CN112831774A (en) * 2019-11-25 2021-05-25 惠东县建祥电子科技有限公司 Copper deposition method suitable for copper-clad plate
CN113355674A (en) * 2021-07-12 2021-09-07 广东恒锦通科技有限公司 Stripping and hanging frame stabilizing agent
CN114045495A (en) * 2021-10-26 2022-02-15 Tcl华星光电技术有限公司 Copper etching solution and manufacturing method of array substrate

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103451716A (en) * 2012-05-31 2013-12-18 际华三五二二装具饰品有限公司 Plating layer stripping corrosion solution
CN103572291A (en) * 2012-07-25 2014-02-12 苏州协鑫光伏科技有限公司 Corrosive liquid for electroplated diamond wire saw coating and wire saw broken-wire connection method
CN103572291B (en) * 2012-07-25 2015-09-30 苏州协鑫光伏科技有限公司 Electroplating diamond wire saw coating corrosive fluid and scroll saw connection of broken lines method
CN104532240A (en) * 2014-12-31 2015-04-22 东莞市富默克化工有限公司 Coarse micro-etching agent used in circuit board and preparation method of coarse micro-etching agent
CN105734571A (en) * 2016-04-21 2016-07-06 广州恩源化工科技有限公司 Metal surface micro-etching liquid
CN107142711A (en) * 2017-06-21 2017-09-08 清远市金沣顺助剂有限公司 A kind of hydrogen peroxide cold bleaching catalyst and its preparation method and application
CN110856348A (en) * 2019-10-09 2020-02-28 广东利尔化学有限公司 Neutralizing and reducing agent for PCB (printed circuit board) glue removal post-treatment
CN112831774A (en) * 2019-11-25 2021-05-25 惠东县建祥电子科技有限公司 Copper deposition method suitable for copper-clad plate
CN111020586A (en) * 2019-12-31 2020-04-17 苏州天承化工有限公司 Environment-friendly rack stripping solution for stripping copper and tin and copper and tin stripping method using environment-friendly rack stripping solution
CN111041487A (en) * 2019-12-31 2020-04-21 苏州天承化工有限公司 Environment-friendly PCB electroplating rack copper stripping liquid and copper stripping method using same
CN112342546A (en) * 2020-10-23 2021-02-09 珠海隆康电子科技有限公司 Microetching stabilizer and preparation method thereof
CN113355674A (en) * 2021-07-12 2021-09-07 广东恒锦通科技有限公司 Stripping and hanging frame stabilizing agent
CN114045495A (en) * 2021-10-26 2022-02-15 Tcl华星光电技术有限公司 Copper etching solution and manufacturing method of array substrate

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Patentee before: Sichuan tronica electronic Polytron Technologies Inc

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