JP4684891B2 - ガスバリア性多層フィルム - Google Patents
ガスバリア性多層フィルム Download PDFInfo
- Publication number
- JP4684891B2 JP4684891B2 JP2005514889A JP2005514889A JP4684891B2 JP 4684891 B2 JP4684891 B2 JP 4684891B2 JP 2005514889 A JP2005514889 A JP 2005514889A JP 2005514889 A JP2005514889 A JP 2005514889A JP 4684891 B2 JP4684891 B2 JP 4684891B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- polyvalent metal
- carboxyl group
- multilayer film
- polymer layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 161
- 150000002736 metal compounds Chemical class 0.000 claims description 99
- 229910052751 metal Inorganic materials 0.000 claims description 79
- 239000002184 metal Substances 0.000 claims description 79
- 239000007789 gas Substances 0.000 claims description 70
- 238000000576 coating method Methods 0.000 claims description 58
- 150000003839 salts Chemical class 0.000 claims description 49
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 42
- 239000001301 oxygen Substances 0.000 claims description 42
- 229910052760 oxygen Inorganic materials 0.000 claims description 42
- 230000035699 permeability Effects 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 35
- 238000005452 bending Methods 0.000 claims description 27
- 239000000178 monomer Substances 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 23
- -1 organic acid salt Chemical class 0.000 claims description 21
- 239000000758 substrate Substances 0.000 claims description 19
- 239000011701 zinc Substances 0.000 claims description 17
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- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 14
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 13
- 229910052725 zinc Inorganic materials 0.000 claims description 13
- 238000000862 absorption spectrum Methods 0.000 claims description 12
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 10
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- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229920001519 homopolymer Polymers 0.000 claims description 6
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
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- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 4
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- 239000010949 copper Substances 0.000 claims description 4
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 claims description 4
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- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 4
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- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
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- 230000003247 decreasing effect Effects 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
- 150000004703 alkoxides Chemical class 0.000 claims 1
- 150000004676 glycans Chemical class 0.000 claims 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims 1
- 229910001928 zirconium oxide Inorganic materials 0.000 claims 1
- 239000010408 film Substances 0.000 description 150
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 30
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- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 11
- 229910001882 dioxygen Inorganic materials 0.000 description 11
- 239000000463 material Substances 0.000 description 11
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- 238000013508 migration Methods 0.000 description 7
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- 239000000395 magnesium oxide Substances 0.000 description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
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Landscapes
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Description
(1)該重合体層(A)が、ポリアルコール類を含まず、かつ、該重合体層(A)を構成する重合体が、カルボキシル基含有重合体のみであり、
(2)該重合体層(A)が、重合体層(A)中のカルボキシル基含有重合体多価金属塩の濃度が多価金属化合物含有層(B)との隣接面から厚み方向に連続的に減少する濃度傾斜構造を有し、
(3)該重合体層(A)の赤外線吸収スペクトルに基づいて求められる波数1560cm−1での吸収ピーク高さA1560と波数1700cm−1での吸収ピークの高さA1700とのピーク比A1560/A1700が0.25以上であり、かつ、
(4)該多層フィルムの酸素透過度が、温度30℃と相対湿度0%、及び温度30℃と相対湿度80%のいずれの条件下においても、500cm 3 (STP)/(m 2 ・day・MPa)以下である、
ガスバリア性多層フィルムが提供される。
本発明で使用するカルボキシル基含有重合体は、分子内に2個以上のカルボキシル基を有する重合体であり、「ポリカルボン酸重合体」と呼ばれることがある。カルボキシル基含有重合体としては、カルボキシル基含有不飽和単量体の単独重合体、カルボキシル基含有不飽和単量体の共重合体、カルボキシル基含有不飽和単量体と他の重合性単量体との共重合体、及び分子内にカルボキシル基を含有する多糖類(「酸性多糖類」ともいう)が代表的なものである。
本発明で用いる多価金属化合物は、金属イオンの価数が2以上の多価金属原子単体及び多価金属化合物である。したがって、本発明で使用する多価金属化合物には、多価金属原子単体も含まれる。多価金属の具体例としては、ベリリウム、マグネシウム、カルシウムなどの周期表2A族の金属;チタン、ジルコニウム、クロム、マンガン、鉄、コバルト、ニッケル、銅、亜鉛などの遷移金属;アルミニウムを挙げることができるが、これらに限定されない。
本発明の多層フィルムは、基材(支持体)上に、少なくとも1層のカルボキシル基含有重合体層と少なくとも1層の多価金属化合物含有層とを塗工法により隣接して形成する方法により製造することができる。多価金属化合物含有層から多価金属化合物がカルボキシル基含有重合体層中に移行し、そこでカルボキシル基含有重合体のカルボキシル基と多価金属塩を形成し、それによって、イオン結合(すなわち、イオン架橋)が導入される。
本発明の多層フィルムは、カルボキシル基含有重合体と該カルボキシル基含有重合体の多価金属塩とを含有する重合体層(A)が、該重合体層(A)中のカルボキシル基含有重合体多価金属塩の濃度が多価金属化合物含有層(B)との隣接面から厚み方向に連続的に減少する濃度傾斜構造を有していることが必要である。
赤外線吸収スペクトルは、島津社製FTIR8200を用いて、全反射減衰法(ATR法)により測定した。フィルムの赤外線吸収スペクトルに基づいて、ピーク高さ比A1560/A1700を求めた。ここで、A1560は、カルボキシル基の塩(−COO−)に帰属される波数1560cm−1付近のC=O伸縮振動に起因する赤外線吸収スペクトルの吸収ピーク高さである。すなわち、カルボン酸塩(−COO−)に帰属されるC=O伸縮振動は、一般に、波数1600cm−1〜1500cm−1の赤外光波数領域に1560cm−1付近に吸収極大を有する吸収ピークを与える。
フィルムの酸素透過度は、モダンコントロール(Modern Control)社製の酸素透過試験器Oxtran 2/20を用いて、温度30℃及び相対湿度0%の条件下で測定した。測定方法は、ASTM D 3985−81(JIS K 7126のB法に相当)に従って行った。測定値の単位は、cm3(STP)/(m2・day・MPa)である。「STP」は、酸素の体積を規定するための標準条件(0℃、1気圧)を意味する。
ASTM F 392の規定に従って、温度5℃及び相対湿度10%の条件下でゲルボテスターを用いて屈曲試験を行った。筒状に成形したフィルムをねじって、さらにそれを圧縮する操作を繰り返す方法であり、フィルムの耐屈曲疲労試験法として用いた。具体的に、筒状に成形した多層フィルムを試料とし、前記条件下でゲルボテスターによりゲルボフレックス150回の屈曲試験を行った。
観察しようとする多層フィルムをエポキシ樹脂(日新EM株式会社製、商品名「Quentol 812」)で包埋した。この包埋物を約0.5×0.5mm角にトリミングして、ウルトラミクロトーム(Reichert−Nissei社製、商品名「ULTRACUT.N」)を用いて超薄切片を得た。この超薄切片の厚みは、約100nmであった。
X線検出器: Si/Li半導体検出器、
エネルギー分解能: 137eV、
X線取出し角: 22°(side take up方式)、
加速電圧: 200kV、
ビーム径: 約1nmφ、
取り込時間: 30秒間。
ポリアクリル酸水溶液〔東亞合成(株)製、商品名「アロンTMA−10H」、濃度25重量%、数平均分子量200,000〕を蒸留水で希釈し、濃度10重量%のポリアクリル酸(PAA)水溶液を調製した。得られた水溶液を、延伸ポリエチレンテレフタレートフィルム〔PETフィルム:東レ(株)製、商品名「ルミラーTMS10」、厚さ12μm、90℃の熱水中に30秒間浸漬したときの熱収縮率が0.5%〕上にバーコーター(RK PRINT−COAT INSTRUMENT社製、商品名「K303PROOFERTM」)を用いて塗布し、塗膜をドライヤーにより乾燥させた。ポリアクリル酸の乾燥塗布量は、0.90g/m2で、塗膜(フィルム)の乾燥厚みは、1.0μmであった。
超微粒子酸化亜鉛含有塗料〔住友大阪セメント(株)製、商品名「ZR133」〕をPETフィルム〔東レ(株)製、商品名「ルミラーTMS10」〕上にバーコーター(RK PRINT−COAT INSTRUMENT社製、商品名「K303PROOFERTM」)を用いて塗布し、塗膜をドライヤーにより乾燥させた。超微粒子酸化亜鉛含有塗料の乾燥塗布量は、2.4g/m2であり、乾燥膜厚は、1.3μmであった。
PETフィルム〔東レ(株)製、商品名「ルミラーTMS10」〕上に、ベルジャー蒸着器を用いてケイ素酸化物(SiO2)の蒸着膜を堆積させた。このようにして得られた「PET/SiO2蒸着膜」の層構成を有する多層フィルムについて、酸素透過度を測定した。結果を表1に示す。
(*1)ATR法によるフィルムの赤外線吸収スペクトルにおけるピーク高さの比A1560/A1700である。
(*2)互いに隣接する全てのカルボキシル基含有重合体中に含まれるカルボキシル基の合計と多価金属化合物の合計とに基づいて算出されるカルボキシル基に対する多価金属化合物の化学当量である。
(*3)酸素透過度の単位は、cm3(STP)/m2・day・MPa(温度30℃、相対湿度0%)である。基材として用いたPETフィルムの酸素透過度は、1,400cm3(STP)/m2・day・MPa(温度30℃、相対湿度0%)であった。
(*4)ゲルボテスターによるゲルボフレックスを150回実施する屈曲疲労試験後の酸素透過度である。
(*5)ゲルボテスターによるゲルボフレックス150回実施後に、温度30℃、相対湿度80%の環境下で20時間調湿処理した試料の酸素透過度である。
Claims (19)
- カルボキシル基含有重合体と該カルボキシル基含有重合体の多価金属塩とを含有する重合体層(A)の片面または両面に多価金属化合物含有層(B)が隣接した層構成を有する多層フィルムであって、
(1)該重合体層(A)が、ポリアルコール類を含まず、かつ、該重合体層(A)を構成する重合体が、カルボキシル基含有重合体のみであり、
(2)該重合体層(A)が、重合体層(A)中のカルボキシル基含有重合体多価金属塩の濃度が多価金属化合物含有層(B)との隣接面から厚み方向に連続的に減少する濃度傾斜構造を有し、
(3)該重合体層(A)の赤外線吸収スペクトルに基づいて求められる波数1560cm−1での吸収ピーク高さA1560と波数1700cm−1での吸収ピークの高さA1700とのピーク比A1560/A1700が0.25以上であり、かつ、
(4)該多層フィルムの酸素透過度が、温度30℃と相対湿度0%、及び温度30℃と相対湿度80%のいずれの条件下においても、500cm 3 (STP)/(m 2 ・day・MPa)以下である、
ガスバリア性多層フィルム。 - 多層フィルムが、重合体層(A)/多価金属化合物含有層(B)の層構成を有し、かつ、重合体層(A)が、該重合体層(A)中のカルボキシル基含有重合体多価金属塩の濃度が多価金属化合物含有層(B)との隣接面から厚み方向に該重合体層(A)の反対面まで連続的に減少する濃度傾斜構造を有する請求項1記載のガスバリア性多層フィルム。
- 多層フィルムが、重合体層(A)/多価金属化合物含有層(B)/重合体層(A)の層構成を有し、かつ、各重合体層(A)が、該重合体層(A)中のカルボキシル基含有重合体多価金属塩の濃度が多価金属化合物含有層(B)との隣接面から厚み方向に該重合体層(A)の反対面まで連続的に減少する濃度傾斜構造を有する請求項1記載のガスバリア性多層フィルム。
- 多層フィルムが、多価金属化合物含有層(B)/重合体層(A)/多価金属化合物含有層(B)の層構成を有し、かつ、該重合体層(A)が、該重合体層(A)中のカルボキシル基含有重合体多価金属塩の濃度が各多価金属化合物含有層(B)との隣接面から厚み方向に該重合体層(A)の中心部まで連続的に減少する濃度傾斜構造を有する請求項1記載のガスバリア性多層フィルム。
- 重合体層(A)の濃度傾斜構造が、エネルギー分散型X線分光法による厚み方向での元素組成分析結果に基づいて算出した元素モル数比〔金属元素(n価)/C元素〕が0〜0.06/nの範囲内にあるカルボキシル基含有重合体多価金属塩の低濃度領域を重合体層(A)の厚み比率で5〜80%の割合で有するものである請求項1記載のガスバリア性多層フィルム。
- 重合体層(A)の濃度傾斜構造が、エネルギー分散型X線分光法による厚み方向での元素組成分析結果に基づいて算出した元素モル数比〔金属元素(n価)/C元素〕が0.06/n超過0.33/n以下の範囲内にあるカルボキシル基含有重合体多価金属塩の高濃度領域を重合体層(A)の厚み比率で20〜95%の割合で多価金属化合物含有層(B)に隣接して有するものである請求項1記載のガスバリア性多層フィルム。
- 重合体層(A)が、エネルギー分散型X線分光法による厚み方向での元素組成分析結果に基づいて算出した元素モル数比〔金属元素(n価)/C元素〕が0.06/n超過0.33/n以下の範囲内にあるカルボキシル基含有重合体多価金属塩の高濃度領域を重合体層(A)の厚み比率で20〜95%の割合で多価金属化合物含有層(B)に隣接して有し、かつ、多価金属化合物含有層(B)との隣接面とは反対面側に、元素モル数比〔金属元素(n価)/C元素〕が0〜0.06/nの範囲内にあるカルボキシル基含有重合体多価金属塩の低濃度領域を重合体層(A)の厚み比率で5〜80%の割合で有するものである請求項2記載のガスバリア性多層フィルム。
- 各重合体層(A)が、エネルギー分散型X線分光法による厚み方向での元素組成分析結果に基づいて算出した元素モル数比〔金属元素(n価)/C元素〕が0.06/n超過0.33/n以下の範囲内にあるカルボキシル基含有重合体多価金属塩の高濃度領域を重合体層(A)の厚み比率で20〜95%の割合で多価金属化合物含有層(B)に隣接して有し、かつ、多価金属化合物含有層(B)との隣接面とは反対面側に、元素モル数比〔金属元素(n価)/C元素〕が0〜0.06/nの範囲内にあるカルボキシル基含有重合体多価金属塩の低濃度領域を重合体層(A)の厚み比率で5〜80%の割合で有するものである請求項3記載のガスバリア性多層フィルム。
- 重合体層(A)が、エネルギー分散型X線分光法による厚み方向での元素組成分析結果に基づいて算出した元素モル数比〔金属元素(n価)/C元素〕が0.06/n超過0.33/n以下の範囲内にあるカルボキシル基含有重合体多価金属塩の高濃度領域を重合体層(A)の厚み比率で合計20〜95%の割合で各多価金属化合物含有層(B)に隣接して有し、かつ、中心部に、元素モル数比〔金属元素(n価)/C元素〕が0〜0.06/nの範囲内にあるカルボキシル基含有重合体多価金属塩の低濃度領域を重合体層(A)の厚み比率で5〜80%の割合で有するものである請求項4記載のガスバリア性多層フィルム。
- 全カルボキシル基含有重合体層(A)中に含まれるカルボキシル基の合計(At)に対する全カルボキシル基含有重合体層(A)と全多価金属化合物含有層(B)の中に含まれる多価金属化合物の合計(Bt)とに基づいて算出されるカルボキシル基に対する多価金属化合物の化学当量が1.0以上である請求項1記載のガスバリア性多層フィルム。
- 筒状に成形した多層フィルムを試料とし、ASTM F 392の規定に従って温度5℃及び相対湿度10%の条件下でゲルボテスターによりゲルボフレックス150回の屈曲試験を行った後、該試料を温度30℃及び相対湿度80%の環境下で20時間エージングしたとき、ASTM D 3985−81に従って温度30℃及び相対湿度0%の条件下で測定したエージング後の試料の酸素透過度が屈曲試験前の試料の酸素透過度の±50%以内に維持されている請求項1記載のガスバリア性多層フィルム。
- カルボキシル基含有重合体が、それを単独で成形したフィルムについて、30℃及び相対湿度0%の低湿度条件下で測定した酸素透過係数が1,000cm3・μm/(m2・day・MPa)以下となるものである請求項1記載のガスバリア性多層フィルム。
- カルボキシル基含有重合体が、カルボキシル基含有不飽和単量体の単独重合体、カルボキシル基含有不飽和単量体の共重合体、カルボキシル基含有不飽和単量体と他の重合性単量体との共重合体、カルボキシル基含有多糖類、またはこれらの2種以上の混合物である請求項1記載のガスバリア性多層フィルム。
- カルボキシル基含有不飽和単量体が、アクリル酸、メタクリル酸、クロトン酸、イタコン酸、マレイン酸、及びフマル酸からなる群より選ばれる少なくとも1種のα,β−モノエチレン性不飽和カルボン酸である請求項13記載のガスバリア性多層フィルム。
- 多価金属化合物が、ベリリウム、マグネシウム、カルシウム、銅、コバルト、ニッケル、亜鉛、アルミニウムまたはジルコニウムの酸化物、炭酸塩、有機酸塩またはアルコキシドである請求項1記載のガスバリア性多層フィルム。
- 多価金属化合物が、2価金属化合物である請求項1記載のガスバリア性多層フィルム。
- 重合体層(A)の厚みが0.001μm〜1mmで、多価金属化合物含有層(B)の厚みが0.001μm〜1mmである請求項1記載のガスバリア性多層フィルム。
- 基材上に、少なくとも1層のカルボキシル基含有重合体層と少なくとも1層の多価金属化合物含有層とを塗工法により隣接して形成し、その後、多価金属化合物含有層相対湿度20%以上、温度5℃〜200℃の雰囲気下でエージングして、多価金属化合物含有層から多価金属化合物をカルボキシル基含有重合体層中に移行させて、カルボキシル基含有重合体のカルボキシル基と多価金属塩を形成させる方法により得られたものである請求項1記載のガスバリア性多層フィルム。
- 請求項1乃至18のいずれか1項に記載の多層フィルムの片面または両面に、少なくとも1層の他の樹脂層が更に配置されているガスバリア性多層フィルム。
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KR102250387B1 (ko) * | 2018-06-21 | 2021-05-10 | 주식회사 엘지화학 | 분리막 활성층의 제조 전 분리막 활성층을 구성하는 아민 화합물을 정량하는 방법, 분리막 활성층 중의 폴리아마이드 또는 미반응 아민 화합물을 정량하는 방법, 및 분리막 활성층의 제조 조건의 설정 기준 또는 제조 조건을 설정하는 방법 |
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- 2004-10-20 WO PCT/JP2004/015868 patent/WO2005037535A2/ja active Search and Examination
- 2004-10-20 CN CN2004800311842A patent/CN1871125B/zh not_active Expired - Lifetime
- 2004-10-20 US US10/576,677 patent/US7608339B2/en active Active
- 2004-10-20 KR KR1020067007728A patent/KR20060092252A/ko not_active Application Discontinuation
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Also Published As
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JPWO2005037535A1 (ja) | 2006-12-28 |
EP1676700A2 (en) | 2006-07-05 |
EP1676700B1 (en) | 2014-09-10 |
CN1871125A (zh) | 2006-11-29 |
CN1871125B (zh) | 2011-06-01 |
WO2005037535A2 (ja) | 2005-04-28 |
US7608339B2 (en) | 2009-10-27 |
EP1676700A4 (en) | 2008-10-22 |
WO2005037535A3 (ja) | 2005-07-21 |
KR20060092252A (ko) | 2006-08-22 |
US20080274341A9 (en) | 2008-11-06 |
US20070134476A1 (en) | 2007-06-14 |
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