WO2005049895A1 - 電解銅箔製造用銅電解液及び電解銅箔の製造方法 - Google Patents
電解銅箔製造用銅電解液及び電解銅箔の製造方法 Download PDFInfo
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- WO2005049895A1 WO2005049895A1 PCT/JP2004/016728 JP2004016728W WO2005049895A1 WO 2005049895 A1 WO2005049895 A1 WO 2005049895A1 JP 2004016728 W JP2004016728 W JP 2004016728W WO 2005049895 A1 WO2005049895 A1 WO 2005049895A1
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/38—Electroplating: Baths therefor from solutions of copper
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/04—Wires; Strips; Foils
Definitions
- the present invention relates to a copper electrolytic solution for producing an electrolytic copper foil and a method for producing an electrolytic copper foil, and more particularly, to producing an electrolytic copper foil having a rough surface having a uniform shape and size on a rough surface and a low roughness.
- the present invention relates to a suitable copper electrolytic solution for producing an electrolytic copper foil and a method for producing an electrolytic copper foil.
- An electrolytic copper foil is a foil (deposited foil) obtained by electrodepositing copper on a cathode having a copper electrolyte containing copper ions, a titanium or the like, or a bump or the like formed on the surface of the deposited foil. Or a foil provided with a metal layer or an organic component layer (surface-treated foil), and is widely used as a material for forming printed wiring boards. Since the deposited foil is obtained by electrodeposition on the cathode as described above, the foil on the cathode side (glossy surface, shy-one surface or S-surface) and the shy-one surface are generally used. The surface shape and roughness are different from those on the opposite side (rough surface, mat surface or M surface).
- the shiny surface of the deposition foil has a smooth shape with the shape of the cathode surface being substantially transferred, while the rough surface has a height difference (roughness) of the copper surface grown during electrodeposition. ) Many ridges of several meters or so.
- the surface-treated foil is usually subjected to a surface treatment such as forming a bump in a substantially as-is state without particularly polishing the mountain-like projections on the rough surface of the deposition foil.
- the surface shape of the surface strongly leaves the influence of the surface shape of the rough surface of the deposition foil. That is, in the electrolytic copper foil, it is important to control the shape and size of the mountain-like protrusions (hereinafter, also simply referred to as “mountains”) on the rough surface of the deposition foil.
- the copper foil when used as a material for forming a printed wiring board, the copper foil is required to have high adhesiveness with other materials such as a pre-preparer and the like.
- Surface treated foils with improved adhesive strength etc. are mainly used.
- the surface shape of the surface-treated foil is strongly influenced by the surface shape of the base deposition foil. In order to ensure the properties and the like, it is desired that the shape and size of the peaks on the rough surface of the deposition foil be uniform. On the other hand, due to the recent demand for thinner printed wiring boards, the thickness of copper foil itself has been reduced.
- the roughness of the peaks on the rough surface of the surface-treated foil and, consequently, the deposited foil be small.
- the thickness of the deposition foil is 35 ⁇ m and the R is 4.2 ⁇ m or less.
- Patent Document 1 A method for measuring the concentration and molecular weight of a protein or the like in a solution is known (Patent Document 1). It is also known that proteins and the like are decomposed only by being left in a copper electrolyte solution to reduce the molecular weight, and that they are consumed during electrolysis and the concentration in the copper electrolyte solution is reduced.
- Patent Document 1 JP 2001-337081 A (Page 2, Column 1)
- the initial molecular weight at the time of preparing an aqueous solution of proteins and the like is controlled by specifying the brand of soluble proteins and the like.
- concentration in the copper electrolyte is controlled to a constant amount by continuously adding a predetermined amount of the aqueous solution such as a protein.
- a steady state in which a predetermined amount of an aqueous solution of a protein or the like using a predetermined brand of protein or the like is continuously added must be created, so that the shape and size of the rough mountain are uniform.
- an object of the present invention is to provide a method for producing a deposited foil having substantially uniform peak shapes and sizes without substantially causing a yield of the deposited foil due to the control of the molecular weight and concentration of proteins and the like.
- Another object of the present invention is to provide a copper electrolytic solution for producing an electrolytic copper foil capable of obtaining a foil having a low roughness and a method for producing an electrolytic copper foil using the same.
- the present inventors have conducted intensive studies, and as a result, have found that the number average molecular weight and the concentration of the protein contained in the copper electrolytic solution for producing the electrolytic copper foil are within the respective predetermined ranges. It has been found that the use of the liquid makes the shape and size of the peaks on the rough surface of the deposition foil uniform and low in roughness, and the present invention has been completed.
- the present invention is a copper electrolytic solution for producing an electrolytic copper foil, wherein the protein contained in the copper electrolytic solution has a number average molecular weight M force OOO-2300 and a concentration of 2 ppm-4.
- An object of the present invention is to provide a copper electrolytic solution for producing an electrolytic copper foil, which is characterized by having a viscosity of 5 ppm.
- the copper electrolyte has a Cu 2+ concentration of 60 gZl-100 gZl.
- the copper electrolyte has a free SO 2 concentration of 60 gZl to 250 gZl.
- the copper electrolyte has a C1-concentration of 0.5 ppm to 2.0 ppm.
- the temperature of the copper electrolyte is 40 ° C to 60 ° C.
- the present invention provides the copper electrolytic solution for producing an electrolytic copper foil. Electrolytic copper foil characterized by using liquid Is provided.
- the present invention also provides a method for producing an electrolytic copper foil, wherein the electrolytic current density is 30 AZcm 2 to 70 AZcm 2 .
- the number average molecular weight M and the concentration of the protein contained in the copper electrolytic solution at the time of electrolysis are specified within a predetermined range. It is possible to obtain a low-roughness foil having a rough peak formed in a regular shape.
- proteins are usually easily decomposed in a copper electrolyte, even proteins having a number-average molecular weight M exceeding the above-mentioned predetermined range can be used as a raw material. The range of choices expands.
- the brand used for the protein was identified by When the initial number average molecular weight M in the electrolytic solution is substantially controlled, or when a predetermined amount of the aqueous solution of the protein is added to the copper electrolytic solution, the analysis is performed without being bound by an empirical work standard process. This is preferable for producing a low-roughness foil in which the shape of the peaks on the rough surface of the release foil is uniform.
- the copper electrolyte can be prepared in a short time.
- the copper electrolyte can be prepared in a short time in this way, the yield of deposited foil due to the management of proteins in the copper electrolyte can be extremely reduced. Furthermore, since the control of the protein is completed only by adjusting the target molecular weight and concentration of the protein in the electrolyte to a predetermined control value, the preparation of the electrolyte for each line can be easily performed, and the start-up of the line can be accelerated. be able to. Further, according to the method for producing an electrolytic copper foil according to the present invention, the use of the above-mentioned copper electrolytic solution makes it possible to obtain a low-roughness foil in which the shape of the peak of the rough surface of the deposited foil is uniform. .
- the copper electrolytic solution for producing an electrolytic copper foil according to the present invention is a copper electrolytic solution for producing an electrolytic copper foil.
- an acidic bath can be used as long as it is an electrolytic solution containing copper ions (Cu 2+ ).
- a sulfuric acid bath can be used as the acidic bath.
- the sulfuric acid bath facilitates wastewater treatment because of the physical properties of the resulting foil, and the source of copper electrolyte It is preferable because copper wire or the like, which is a material, can be easily dissolved.
- the above-mentioned copper electrolyte has a Cu 2+ concentration of usually 60 gZl to 100 gZl, preferably 70 gZl to 90 gZl. If the Cu 2+ concentration is less than 60 gZl, the solution resistance increases, which is not preferable. If it exceeds 100 gZl, copper sulfate crystals are likely to precipitate, which is not preferable.
- the free SO 2 concentration is usually 60 gZl
- the deposition foil is a copper foil obtained by depositing copper from a copper electrolyte containing copper ions on a cathode having the same strength as titanium, and is not subjected to surface treatment such as bump treatment. Foil, that is, unsurfaced copper foil.
- the above-mentioned copper electrolyte has a C1-concentration of usually 0.5 ppm-2. Oppm, preferably 1.5 ppm-1.9 ppm.
- ppm means mgZl. If the C1-concentration is less than 0.5 ppm, the mountain shape is not good at the protein concentration of the present invention, which is not preferable. Also, if the C1-concentration is more than Oppm, microporosity tends to be generated on the deposition foil. . In the present invention, since the shape and the like of the deposited foil are good when the concentration and molecular weight of the protein and the C1-concentration are respectively within the predetermined ranges, the shape of the peak of the deposited foil is good. It is assumed that there is some correlation between protein concentration and molecular weight and C1-concentration for control.
- the copper electrolyte contains a protein.
- the protein include gelatin, glue and the like.
- the protein in order to include a protein in the copper electrolyte, the protein is usually dissolved in water, and then an aqueous solution of the protein is added to the copper electrolyte. Those having a number average molecular weight M of 1700 or more are used. The reason is that the number average molecular weight M in the copper electrolyte is reduced to 1000-2300, which will be described later, because the number average molecular weight M of the protein decreases due to decomposition in the copper electrolyte or aqueous solution. Is slightly higher than the lower limit in consideration of decomposition.
- the raw material protein is not particularly limited as long as the number average molecular weight Mn in the copper electrolyte solution can be in the range, for example, and is not particularly limited.
- DVM80 manufactured by Nitta Gelatin Co., Ltd., UDB manufactured by Nitta Gelatin Co., Ltd., SCP5000 manufactured by Nitta Gelatin Co., Ltd., 700F manufactured by Nitta Gelatin Co., Ltd. can be used.
- the protein contained in the copper electrolyte has a number average molecular weight M of usually 1000-2300, preferably 1200-2100, and a concentration force S of usually 2 ppm-4.5 ppm, preferably 2.Oppm- It is more than 3.6 ppm, more preferably more than 2.5 ppm and not more than 3.6 ppm.
- the number average molecular weight M and the concentration of the protein in the copper electrolyte are within the above ranges, the shape and size of the peaks on the rough surface of the deposition foil are uniform, and a foil with low roughness is preferably obtained.
- U the number average molecular weight M and the concentration of the protein refer to the number average molecular weight M and the concentration of the protein having a number average molecular weight M of 790 or more.
- FIG. 19 shows the relationship between the number average molecular weight M and the concentration of the protein contained in the copper electrolyte and the normal tensile strength of the deposited foil.
- FIG. 20 shows the relationship between the number average molecular weight M and the concentration, and the roughness R of the rough surface of the deposited foil.
- the horizontal axis shows the number average molecular weight M of the protein contained in the copper electrolyte
- the vertical axis shows the normal tensile strength of the deposited foil.
- the horizontal axis represents the number average molecular weight M of the protein contained in the copper electrolyte
- the vertical axis represents the roughness R of the rough surface of the deposited foil.
- a sample in which the concentration of the protein in the copper electrolyte is less than 1.5 ppm is a square plot (hereinafter referred to as “plot A”, and the group in which 1.5 ppm—2.5 ppm sample is a triangular plot (hereinafter “Plot B” and the group that forms Plot B is called “Plot B group”), 2.5 ppm Samples exceeding the above are indicated by a vertical diamond-shaped plot (hereinafter referred to as “plot C”, and the group formed by plot C is referred to as “plot C group”).
- the concentration of the protein is too high, the viscosity of the copper electrolyte becomes too high and foaming tends to be unfavorable.
- the number average molecular weight M power of the protein is too low, the copper electrolyte becomes too low. Since the viscosity of the copper electrolyte solution becomes too high as described above when the concentration of the protein required in the solution is too high and foaming tends to be unfavorable, in the present invention, the number average molecular weight of the protein is increased as described above.
- the lower limit of M and the upper limit of protein concentration are set.
- the degree to which the normal tensile strength of the deposition foil increases while the number-average molecular weight M of the protein contained in the copper electrolyte decreases that is, the horizontal axis in FIG. 19 (the number-average molecular weight of the protein) M)
- the slopes formed by plot A, plot B, and plot C are the same as the slope formed by plot A, the slope formed by plot B, and the slope formed by plot C, respectively. It can be seen that the degree to which the inclination falls to the right increases as the inclination increases, and the degree to which the inclination decreases to the right decreases as the latter decreases, and the inclination approaches horizontal.
- the degree to which the roughness R decreases as the number average molecular weight M of the protein contained in the copper electrolyte decreases that is, the horizontal axis of FIG.
- the slopes formed by the plots A, B, and C are plotted in the order of the slope formed by the plot A, the slope formed by the plot B, and the slope formed by the plot C. It can be seen that the degree to which the inclination rises to the right increases, and the degree to which the inclination increases to the right as the latter decreases becomes smaller and closer to horizontal.
- a method for measuring the number average molecular weight M and the concentration of the protein contained in the copper electrolyte will be described.
- a method disclosed in JP-A-2001-337081 can be used. Specifically, the measurement is performed by high-performance liquid chromatography using column switching, preferably gel permeation chromatography. A method for measuring the concentration and molecular weight distribution of the protein and the like are used. In this measurement method, a mixed solution of at least 3% by volume of acetonitrile and a concentration of 0.002M to 0.01M of dilute sulfuric acid of 97% by volume or less was used as the mobile phase, and the exclusion limit molecular weight was 2500 or less as a packing material for the pretreatment column.
- a packing material in the size exclusion mode below and use a packing material in the size exclusion mode with an exclusion limit molecular weight of S10000 or more as the packing material for the separation column.
- two or more of the above separation columns are connected in series.
- the molecular weight distribution and concentration of the protein contained in the copper electrolyte solution are measured, and the number average molecular weight M is calculated from the molecular weight distribution.
- FIG. 21 is a schematic explanatory view showing an example of an apparatus used in the method for measuring the number average molecular weight M and the concentration of a protein in the present invention.
- the measuring device shown in FIG. 21 is a schematic explanatory view showing an example of an apparatus used in the method for measuring the number average molecular weight M and the concentration of a protein in the present invention. The measuring device shown in FIG.
- the pretreatment column 10 placed, the first detector 11 connected and arranged between the pretreatment column 10 and the fifth connection port 8 of the switching valve, and two at the sixth connection port 9 of the switching valve Separation columns 12 and 12 connected in series, a second detector 13 connected between the separation column 12 and the third connection port 6 of the switching valve, and detection by the second detector 13
- a data processing device (not shown) for obtaining the protein concentration and molecular weight distribution based on the data
- a drain pipe 14 connected to the fourth connection port 7 of the switching valve, a pretreatment column and It has a thermostat 15 for keeping the separation power ram at a constant temperature.
- a tube made of PEEK or Teflon (registered trademark) is preferably used for keeping the separation power ram at a constant temperature.
- a detector generally used for high-performance liquid chromatography that can detect a protein at the level of mgZl can be used.
- an absorbance detector can be used.
- a data processing device having an arithmetic function for obtaining a protein concentration and a molecular weight distribution based on the data detected by the detectors 11 and 13 can also be used.
- the first connection port 4 and the second connection port 5 are connected by the 6-way switching valve 3, and the fifth connection port 8 is connected to the first connection port 4.
- the mobile phase having a mixed solution power of 0.055M sulfuric acid and acetonitrile having a mixed solution power of 95: 5 at a constant flow rate by the liquid sending pump 1 at a constant flow rate
- the mobile phase reservoir 16 ⁇ the liquid sending pump 1 ⁇ the injector 2 ⁇ 6-way switching valve 3 ⁇
- Pretreatment column 10 ⁇ 1st detector 11 ⁇ 6-way switching valve 3 ⁇ Separation column 12, 12 ⁇ 2nd detector 13 ⁇ 6-way switching valve 3 ⁇ Drainage pipe 14 Let it.
- 200 ⁇ l of the sample containing the protein and 200 ⁇ l of the electrolyte solution diluted with pure water is introduced into the injector 2.
- the electrolytic solution contains a pretreatment column 10 packed with an aqueous size exclusion mode filler with an exclusion limit molecular weight of 2500 or less, for example, SEPHADEX G-15 (exclusion limit molecular weight 1500, manufactured by Amersham Pharmacia Biotech Co., Ltd.). Flow into a PEEK column with an inner diameter of 7.5 mm and a length of 250 mm.
- the electrolyte flowing into the pretreatment column 10 is separated according to the separation principle of size exclusion chromatography, and proteins having a high molecular weight are eluted first, and thereafter, an electrolyte component which is a low molecular weight substance is eluted.
- the protein and the electrolyte component eluted from the pretreatment column 10 are converted into a first detector 11, for example, Monitor at a wavelength of 210 nm with an absorptiometer, and switch the 6-way switching valve after the protein is introduced into the separation columns 12 and 12 and before a large amount of electrolyte components are introduced into the separation columns 12 and 12.
- a first detector 11 for example, Monitor at a wavelength of 210 nm with an absorptiometer
- the mobile phase is stored in the mobile phase 16 ⁇ liquid pump 1 ⁇ injector 2 ⁇ 6-way switching valve 3 ⁇ separation column 12, 12 ⁇ second detector 13 ⁇ 6-way switching valve 3 ⁇ pretreatment column 10 ⁇
- the first detector 11 ⁇ the 6-way switching valve 3 ⁇ the drainage pipe 14 flows in this order, and the electrolyte component is discharged out of the system via the drainage pipe 14.
- the protein introduced into the separation column 12 is separated and eluted according to its molecular weight and molecular weight distribution.
- the eluted protein is detected at a measurement wavelength of 21 Onm using a second detector, for example, an absorption photometer, and the concentration and molecular weight distribution of the protein are determined by a data processor based on the detected data.
- the protein and the electrolyte component can be automatically separated in the flow of the mobile phase, so that the pretreatment before injection into the injector is performed. Is unnecessary, so that the degradation of the protein during the measurement can be suppressed as much as possible.
- the molecular weight distribution of the protein can be measured by the separation column, information on the molecular weight can be obtained, so that it is also possible to measure the change over time of the decomposition of the protein.
- the temperature of the copper electrolyte during copper electrolysis is generally 40 ° C. to 60 ° C., preferably 45 ° C. to 55 ° C.
- the obtained deposited foil is preferable because the shape and size of the peaks on the rough surface are uniform and the roughness tends to be low. It is not preferable that the temperature force is less than 0 ° C because the shape of the rough mountain is easily roughened. If the temperature force is more than 60 ° C, the aging of facilities such as Shii-Dani-Bulle pipes is easily accelerated, which is not preferable. ,.
- the copper electrolyte can be manufactured by a known manufacturing method.
- the copper concentration In copper electrolyte can be increased by dissolving the copper raw materials such as copper scrap, free so 4 2 concentration and C
- the concentration can be increased by adding sulfuric acid or hydrochloric acid. Further, the number average molecular weight M and the concentration of the protein in the copper electrolyte can be adjusted by measuring the above-mentioned measurement method and then adding a required amount of an aqueous protein solution adjusted to the required number average molecular weight M. .
- This method is for producing an electrodeposited foil using the copper electrolytic solution for producing an electrolytic copper foil, and a known method can be used for producing the electrodeposited foil.
- Known methods for producing a deposition foil include, for example, supplying a copper electrolyte between a curved cathode surface of a rotating titanium drum cathode and the anode, performing electrolysis, and depositing a deposition foil on the cathode surface. And there is a method of winding this continuously
- the temperature at the time of electrolysis of the copper electrolyte used in the present invention is usually 40 ° C to 60 ° C, preferably 45 ° C to 55 ° C.
- the obtained deposited foil is preferable because the shape and size of the peaks on the rough surface are uniform and the roughness tends to be low. If the temperature is less than 40 ° C, it is not preferable because the shape of the rough mountain is easily roughened. If the temperature is more than 60 ° C, the aging of facilities such as Shii-Dani bur pipes is easily accelerated, which is preferable. What,
- the electrolysis current density during electrolysis of the copper electrolyte is usually 30 AZcm 2 to 70 AZcm 2 , preferably 40 AZcm 2 to 60 AZcm 2 .
- the obtained deposited foil is preferable because the shape and size of the peaks on the rough surface are uniform and the roughness tends to be low. Also, it is preferable that the cathode surface is appropriately polished.
- the copper electrolytic solution can be used as a raw material for producing a low-roughness deposited foil in which the shape and size of the peaks on the rough surface are uniform.
- the low-roughness deposited foil is a deposited foil having a foil thickness of 35 m, and the roughness R of the rough surface is usually 4.2 ⁇ m or less, preferably 2 ⁇ m-3.2 ⁇ m, And always z
- the tensile strength of the state is usually 45. Okgf / mm 2 or more.
- R is the ten-point average roughness z
- the flow path between the anode power sword is rectangular in cross section, and the electrolysis can be performed while the electrolytic solution is continuously supplied between the anode power sword using a circulation pump.
- the following specifications were used.
- Pretreatment column PEEK with an inner diameter of 7.5 mm and a length of 250 mm containing a packing material (exclusion limit molecular weight 1500) having a particle size of 66 ⁇ m or less (Sephadex G-15) manufactured by Amersham Pharmacia Biotech Co., Ltd.
- the reagents used for preparing the calibration curve are as follows.
- the concentration of gelatin was measured by preparing a calibration curve using an aqueous solution of a known concentration of the same kind of gelatin.
- NEUROTENSIN Sigma Aldrich Japan, molecular weight 1673
- ANGIOTENSIN II Sigma Aldrich Japan, molecular weight 1046
- the electrolytic solution was electrolyzed under the following conditions to produce a deposited foil.
- the surface roughness of the rough surface of the obtained deposited foil was measured using a densitometer (trade name: SEF-30D, manufactured by Kosaka Corporation). The measurement length was 0.8 mm.
- R, R and R ⁇ O Conforms to ISB0601 a max z
- R represents the center line average roughness
- R represents the maximum roughness
- R represents the tenth amax z point average value roughness
- Room-Temperature Tensile Strength A sample of lcm width x 10cm length is prepared by cutting the obtained separated foil, and both ends in the length direction of the sample are provided at two locations in the vertical direction of the apparatus. And set it so that the length direction of the sample is up and down.At room temperature, while holding the sample underneath, pull downward at a speed of 50 mmZmin and measure. The maximum load of the applied tensile strength was defined as the room temperature tensile strength.
- Room temperature elongation When measuring room temperature tensile strength, the maximum value of the measured elongation was taken as room temperature elongation.
- electrolysis was performed under the following conditions to produce a deposited foil.
- Electrolyte D was prepared one day after the first addition of aqueous gelatin solution A to solution C. Table 1 shows the number average molecular weight M and the concentration of gelatin in electrolyte D.
- electrolysis was performed under the same conditions as in Comparative Example 3 to produce a deposited foil.
- electrolysis was performed under the same conditions as in Comparative Example 3 to produce a deposited foil.
- electrolysis was performed under the same conditions as in Comparative Example 3 to produce a deposited foil.
- gelatin As gelatin, SCP5000 manufactured by Nitta Gelatin Co., Ltd. was used and dissolved in pure water to prepare an lg / 1 gelatin aqueous solution (gelatin aqueous solution B).
- an aqueous solution B of gelatin was added to the basic solution B until the gelatin concentration became 4.5 ppm, and the mixture was sufficiently stirred to prepare an electrolytic solution G.
- Table 1 shows the number average molecular weight M and the concentration of gelatin in the electrolytic solution G.
- Electrolyte solution H was prepared one day after aqueous gelatin solution B was first added to solution G.
- Table 1 shows the number average molecular weight M and the concentration of gelatin in electrolyte H.
- electrolysis was performed under the same conditions as in Comparative Example 3 to produce a deposited foil.
- electrolysis was carried out under the same conditions as in Comparative Example 3 to produce a deposited foil.
- Nitta Gelatin Co., Ltd. 700F was used as gelatin, and this was dissolved in pure water to prepare an aqueous lgZl gelatin solution (gelatin aqueous solution C).
- an aqueous solution C of gelatin was added to the base solution B until the gelatin concentration became 1.6 ppm, and the mixture was stirred sufficiently to prepare an electrolyte solution K.
- Table 1 shows the number average molecular weight M and the concentration of gelatin in the electrolyte K.
- electrolysis was performed under the same conditions as in Comparative Example 3 to produce a deposited foil.
- Electrolyte L was prepared 7 hours after the first addition of aqueous gelatin solution C to electrolyte K. Table 1 shows the number average molecular weight M and the concentration of gelatin in the electrolyte L.
- electrolysis was performed under the same conditions as in Comparative Example 3 to produce a deposited foil.
- the aqueous gelatin solution B was added to the basic solution B 10 times at 0.5 ppm per day in terms of the concentration in the electrolytic solution for 2 days. After adding a total of 10 ppm, the solution was allowed to stand for 3 days. P was prepared. Table 1 shows the number average molecular weight M and the concentration of gelatin in the electrolytic solution P.
- electrolysis was performed under the same conditions as in Comparative Example 3 to produce a deposited foil.
- gelatin As gelatin, A1576 manufactured by Asahi Yodani Kagaku Co., Ltd. was dissolved in pure water to prepare an aqueous lgZl gelatin solution (aqueous gelatin solution C).
- an aqueous solution of gelatin C was added to the basic solution B so that the concentration in the solution was 5 ppm, and the mixture was sufficiently stirred, and then allowed to stand for 5 hours to prepare an electrolytic solution R.
- Table 1 shows the number average molecular weight M and the concentration of gelatin in the electrolytic solution R.
- electrolysis was performed under the same conditions as in Comparative Example 3 to produce a deposited foil.
- Aqueous gelatin solution A was added to base solution B at a concentration of 0.5 ppm per day in terms of the concentration in the electrolytic solution. The operation of adding 15 times was performed for 2 days, and a total of 15 ppm was added to prepare an electrolyte solution S.
- Table 1 shows the number average molecular weight M and the concentration of gelatin in the electrolysis solution S.
- electrolysis was performed under the same conditions as in Comparative Example 3 to produce a deposited foil.
- the base solution B was added to the aqueous gelatin solution A and the concentration in the electrolytic solution 15 times, 0.5 ppm per liter, 15 times for 2 days. After a total of 15 ppm was added, the mixture was left for 80 hours.
- Electrolyte T was prepared. Table 1 shows the number average molecular weight M and the concentration of gelatin in the electrolyte T.
- electrolysis was performed under the same conditions as in Comparative Example 3 to produce a deposited foil.
- the electrolytic solution in which the number average molecular weight M and the concentration of gelatin in the copper electrolytic solution are within a predetermined range has the same shape and size as the peaks and rough peaks of the rough surface of the obtained deposition foil, and is low.
- the copper electrolytic solution for producing an electrolytic copper foil and the method for producing an electrolytic copper foil according to the present invention can be used for producing a deposition foil of the electrolytic copper foil.
- FIG. 1 is an SEM photograph of the rough surface of the foil obtained in Comparative Example 1.
- FIG. 2 is an SEM photograph of the rough surface of the foil obtained in Comparative Example 2.
- FIG. 3 is an SEM photograph of the rough surface of the foil obtained in Comparative Example 3.
- FIG. 4 is an SEM photograph of the rough surface of the foil obtained in Example 1.
- FIG. 5 is an SEM photograph of the rough surface of the foil obtained in Example 2.
- FIG. 6 is an SEM photograph of the rough surface of the foil obtained in Example 3.
- FIG. 7 is an SEM photograph of the rough surface of the foil obtained in Comparative Example 4.
- FIG. 8 is an SEM photograph of the rough surface of the foil obtained in Example 4.
- FIG. 9 is an SEM photograph of the rough surface of the foil obtained in Example 5.
- FIG. 10 is an SEM photograph of the rough surface of the foil obtained in Example 6.
- FIG. 11 is an SEM photograph of the rough surface of the foil obtained in Comparative Example 5.
- FIG. 12 is an SEM photograph of the rough surface of the foil obtained in Comparative Example 6.
- FIG. 13 is a SEM photograph of the rough surface of the foil obtained in Example 7.
- FIG. 14 is a SEM photograph of the rough surface of the foil obtained in Example 8.
- FIG. 15 is an SEM photograph of the rough surface of the foil obtained in Example 9.
- FIG. 16 is an SEM photograph of the rough surface of the foil obtained in Comparative Example 8.
- FIG. 17 is an SEM photograph of the rough surface of the foil obtained in Example 10.
- FIG. 18 is an SEM photograph of the rough surface of the foil obtained in Comparative Example 9.
- FIG. 19 is a graph showing the relationship between the number average molecular weight M and the concentration of the protein contained in the copper electrolyte and the normal tensile strength of the foil.
- Figure 20 shows the number average molecular weight M and concentration of protein contained in the copper electrolyte, and the roughness R of the rough surface of the foil.
- FIG. 21 is a schematic explanatory view showing one example of an apparatus used in the method for measuring the number average molecular weight M and concentration of a protein in the present invention.
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US10/556,464 US20070017816A1 (en) | 2003-11-21 | 2004-11-11 | Copper electrolysis solution for production of electrolytic copper foil and process for producing electrolytic copper foil |
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JP2003393134A JP2005154815A (ja) | 2003-11-21 | 2003-11-21 | 電解銅箔製造用銅電解液及び電解銅箔の製造方法 |
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PCT/JP2004/016728 WO2005049895A1 (ja) | 2003-11-21 | 2004-11-11 | 電解銅箔製造用銅電解液及び電解銅箔の製造方法 |
Country Status (6)
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US (1) | US20070017816A1 (ja) |
JP (1) | JP2005154815A (ja) |
KR (1) | KR20060037433A (ja) |
CN (1) | CN1748048A (ja) |
TW (1) | TWI267566B (ja) |
WO (1) | WO2005049895A1 (ja) |
Cited By (1)
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JPWO2015033917A1 (ja) * | 2013-09-05 | 2017-03-02 | 三井金属鉱業株式会社 | 表面処理銅箔、その表面処理銅箔を用いて得られる銅張積層板及びプリント配線板 |
Families Citing this family (6)
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JP5074611B2 (ja) * | 2011-03-30 | 2012-11-14 | Jx日鉱日石金属株式会社 | 二次電池負極集電体用電解銅箔及びその製造方法 |
MX361886B (es) | 2012-05-08 | 2018-12-18 | Nicox Ophthalmics Inc | Preparaciones de agentes terapéuticos hidrófobos, métodos de elaboración y uso de los mismos. |
TWI539033B (zh) * | 2013-01-07 | 2016-06-21 | Chang Chun Petrochemical Co | Electrolytic copper foil and its preparation method |
CN103510106B (zh) * | 2013-09-22 | 2015-10-21 | 中南大学 | 一种铜电解添加剂及其使用方法 |
KR101449342B1 (ko) * | 2013-11-08 | 2014-10-13 | 일진머티리얼즈 주식회사 | 전해동박, 이를 포함하는 전기부품 및 전지 |
CN108385133B (zh) * | 2018-03-13 | 2019-05-14 | 广东飞南资源利用股份有限公司 | 一种利用含铜污泥生产电解铜的低能耗方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0649958B2 (ja) * | 1987-06-15 | 1994-06-29 | 日本電解株式会社 | 電解銅箔の製造方法 |
JPH0754183A (ja) * | 1993-05-28 | 1995-02-28 | Gould Electron Inc | 電着銅箔、および、塩化物イオンならびに有機添加剤の制御添加物を含有する電解質溶液を用いる電着銅箔の製造方法 |
JPH0853789A (ja) * | 1994-08-09 | 1996-02-27 | Furukawa Circuit Foil Kk | 電解銅箔の製造方法 |
Family Cites Families (1)
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US5863666A (en) * | 1997-08-07 | 1999-01-26 | Gould Electronics Inc. | High performance flexible laminate |
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2003
- 2003-11-21 JP JP2003393134A patent/JP2005154815A/ja active Pending
-
2004
- 2004-11-09 TW TW093134090A patent/TWI267566B/zh not_active IP Right Cessation
- 2004-11-11 KR KR1020067002773A patent/KR20060037433A/ko not_active Application Discontinuation
- 2004-11-11 US US10/556,464 patent/US20070017816A1/en not_active Abandoned
- 2004-11-11 CN CNA2004800037462A patent/CN1748048A/zh active Pending
- 2004-11-11 WO PCT/JP2004/016728 patent/WO2005049895A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0649958B2 (ja) * | 1987-06-15 | 1994-06-29 | 日本電解株式会社 | 電解銅箔の製造方法 |
JPH0754183A (ja) * | 1993-05-28 | 1995-02-28 | Gould Electron Inc | 電着銅箔、および、塩化物イオンならびに有機添加剤の制御添加物を含有する電解質溶液を用いる電着銅箔の製造方法 |
JPH0853789A (ja) * | 1994-08-09 | 1996-02-27 | Furukawa Circuit Foil Kk | 電解銅箔の製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2015033917A1 (ja) * | 2013-09-05 | 2017-03-02 | 三井金属鉱業株式会社 | 表面処理銅箔、その表面処理銅箔を用いて得られる銅張積層板及びプリント配線板 |
JP2020109216A (ja) * | 2013-09-05 | 2020-07-16 | 三井金属鉱業株式会社 | 表面処理銅箔の製造方法 |
Also Published As
Publication number | Publication date |
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CN1748048A (zh) | 2006-03-15 |
TW200528585A (en) | 2005-09-01 |
JP2005154815A (ja) | 2005-06-16 |
KR20060037433A (ko) | 2006-05-03 |
TWI267566B (en) | 2006-12-01 |
US20070017816A1 (en) | 2007-01-25 |
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