JPWO2012002418A1 - 負極集電体用銅箔の製造方法 - Google Patents
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- copper foil
- chromate
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 161
- 239000011889 copper foil Substances 0.000 title claims abstract description 161
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims abstract description 193
- 238000011282 treatment Methods 0.000 claims abstract description 115
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000002265 prevention Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 42
- 239000011651 chromium Substances 0.000 claims description 21
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 20
- 229910052804 chromium Inorganic materials 0.000 claims description 20
- 238000007654 immersion Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 7
- 238000005868 electrolysis reaction Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 238000002845 discoloration Methods 0.000 abstract description 52
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 65
- 239000010408 film Substances 0.000 description 57
- 230000000052 comparative effect Effects 0.000 description 30
- 238000011156 evaluation Methods 0.000 description 20
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000006467 substitution reaction Methods 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- 150000001450 anions Chemical class 0.000 description 4
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 239000011149 active material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- -1 dichromate ions Chemical class 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 1
- 239000005750 Copper hydroxide Substances 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229940117975 chromium trioxide Drugs 0.000 description 1
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 229910001956 copper hydroxide Inorganic materials 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0438—Processes of manufacture in general by electrochemical processing
- H01M4/045—Electrochemical coating; Electrochemical impregnation
- H01M4/0452—Electrochemical coating; Electrochemical impregnation from solutions
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/04—Electrolytic coating other than with metals with inorganic materials
- C25D9/08—Electrolytic coating other than with metals with inorganic materials by cathodic processes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
実施例1では、無水クロム酸をイオン交換水に溶解し、クロム濃度0.6g/Lのクロム酸溶液を作製し、苛性ソーダを用いてpHを5.7としたクロメート処理溶液を調製した。クロメート処理を施す銅箔には、8μm厚さの未処理電解銅箔(DFF:三井金属鉱業(株)製)を用い、硫酸100g/L水溶液に30秒間浸漬して酸洗いし、その後、イオン交換水に30秒間浸漬して水洗した。クロメート処理では、ガラスビーカー内のクロメート処理溶液の液温を40℃として緩やかに撹拌し、銅箔を3秒間浸漬後液切りし、温度70℃の加熱空気で3秒間乾燥し、クロメート処理銅箔を作製した。上述した試験条件を、以下に記載する実施例2〜9と比較例1〜5及び参考例の試験条件と併せて後の表1に示す。
実施例1で作製したクロメート処理銅箔は、恒温恒湿処理(50℃95%RHに設定した恒温恒湿槽で48時間保持)前後におけるドラム面幅方向の光沢度Gs(60°)を光沢度計(VG−2000:日本電色工業(株)製)で測定し、色調L*/a*/b*を色差計(SE−2000:日本電色工業(株)製)で測定し、耐変色性を評価した。評価結果を、以下に記載する実施例2〜9と比較例1〜5及び参考例の評価結果と併せて後の表2に示す。
比較例1では、実施例1で調製したクロメート処理溶液のpHを7.2とした以外は、実施例1と同様にしてクロメート処理銅箔を作製し、耐変色性を評価した。評価結果を後の表2に示す。
比較例2では、クロム濃度を3.6g/Lとし、pHが6.5になるよう調製したクロメート処理溶液に硫酸を添加してpHを3.2とした以外は、実施例1と同様にしてクロメート処理銅箔を作製し、耐変色性を評価した。評価結果を後の表2に示す。
比較例3では、クロム濃度を3.6g/Lとし、pHを12.5に調整したクロメート処理溶液を用いた以外は、実施例1と同様にしてクロメート処理銅箔を作製し、耐変色性を評価した。評価結果を後の表2に示す。
比較例4では、特許文献1の実施例1をトレースしたクロメート処理銅箔を作製し、耐変色性を評価した。評価結果を後の表2に示す。
比較例5では、後に示す参考例で調製したクロメート処理溶液を用いて複数枚の銅箔にクロメート処理を施し、pHが3.0になった段階で硫酸を添加してpHを1.3に再調整したクロメート処理溶液を用いた以外は、実施例1と同様にしてクロメート処理銅箔を作製し、耐変色性を評価した。評価結果を後の表2に示す。
参考例では、クロム濃度が3.6g/LでpHが1.3のクロメート処理溶液を用いた以外は、実施例1と同様にしてクロメート処理銅箔を作製し、耐変色性を評価した。評価結果を後の表2に示す。
ΔGs(光沢度差): 実施例1〜6と比較例1〜5とを対比すると、実施例のクロメート処理銅箔におけるΔGs(光沢度差)の値は0.3〜4.6であり、比較例の21.6〜67.1と対比すると、1/10のレベルである。なお、実施例1〜6は、浸漬クロメート処理した銅箔であるが、ΔGs(光沢度差)の値が、電解クロメート処理した銅箔である実施例7〜9とほぼ同レベルで良好である。
参考例で作製したクロメート処理銅箔では、ΔGs(光沢度差)の値が0.6、色差の値が1.79であり、実施例で作製したクロメート処理銅箔と同等レベルの耐変色性を備えている。これに対し、比較例5で作製したクロメート処理銅箔では、ΔGs(光沢度差)の値が52.7、色差の値が15.4であり、明らかに耐変色性に劣るクロメート処理銅箔となっている。
Claims (5)
- 銅箔に防錆処理を施して二次電池の負極集電体用銅箔を製造する方法であって、
前記銅箔をpHが3.5〜7.0のクロメート処理溶液を用いて処理し、当該銅箔の表面にクロメート皮膜を形成することを特徴とする銅箔の製造方法。 - クロム濃度が0.3g/L〜7.2g/Lの前記クロメート処理溶液を用いる請求項1に記載の銅箔の製造方法。
- 液温を15℃〜60℃とした前記クロメート処理溶液を用い、前記銅箔を浸漬処理又は電解処理した後に液切りし、30℃〜150℃の加熱空気を用いて乾燥させる請求項1又は請求項2に記載の銅箔の製造方法。
- 前記浸漬処理は、前記クロメート処理溶液に0.5秒間〜10秒間銅箔を浸漬する請求項3に記載の銅箔の製造方法。
- 前記電解処理は、前記クロメート処理溶液に浸漬した銅箔を陰極として、陰極電流密度0.1A/dm2〜25A/dm2で0.5秒間〜10秒間電解する請求項3に記載の銅箔の製造方法。
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JP6031332B2 (ja) * | 2012-11-13 | 2016-11-24 | Jx金属株式会社 | 表面処理銅箔、それを用いた積層体、プリント配線板、電子部品及び表面処理銅箔の製造方法 |
CN103441283A (zh) * | 2013-06-26 | 2013-12-11 | 东莞新能源科技有限公司 | 锂离子电池负极集流体结构及包含该结构的电池 |
TWI539032B (zh) | 2013-08-01 | 2016-06-21 | Chang Chun Petrochemical Co | Electrolytic copper foil, cleaning fluid composition and cleaning copper foil method |
TWI616122B (zh) | 2014-05-28 | 2018-02-21 | Jx Nippon Mining & Metals Corp | 表面處理銅箔、附載體銅箔、積層體、印刷配線板、電子機器、表面處理銅箔的製造方法及印刷配線板的製造方法 |
CN105810949A (zh) * | 2016-05-25 | 2016-07-27 | 江苏深苏电子科技有限公司 | 一种高比表面积集流体的制备方法 |
KR102691091B1 (ko) * | 2016-11-15 | 2024-08-01 | 에스케이넥실리스 주식회사 | 말림이 최소화된 전해동박, 그것을 포함하는 전극, 그것을 포함하는 이차전지, 및 그것의 제조방법 |
KR102473030B1 (ko) | 2017-08-30 | 2022-11-30 | 에스케이넥실리스 주식회사 | 전해동박, 그의 제조방법 및 그것을 포함하는 고용량 Li 이차전지용 음극 |
CN107761139A (zh) * | 2017-11-30 | 2018-03-06 | 烟台晨煜电子有限公司 | 一种用于电子铜箔表面防氧化处理的镀铬液及工艺 |
JP7251927B2 (ja) * | 2018-06-05 | 2023-04-04 | Jx金属株式会社 | 表面処理銅箔、銅張積層板及びプリント配線板 |
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- 2011-06-29 WO PCT/JP2011/064888 patent/WO2012002418A1/ja active Application Filing
- 2011-06-29 TW TW100122875A patent/TWI530586B/zh active
- 2011-06-29 US US13/807,091 patent/US20130306486A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
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KR101520813B1 (ko) | 2015-05-15 |
TW201211310A (en) | 2012-03-16 |
CN102933746B (zh) | 2017-10-13 |
US20130306486A1 (en) | 2013-11-21 |
WO2012002418A1 (ja) | 2012-01-05 |
TWI530586B (zh) | 2016-04-21 |
CN102933746A (zh) | 2013-02-13 |
JP5898616B2 (ja) | 2016-04-06 |
KR20120137433A (ko) | 2012-12-20 |
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