JPWO2021176930A5 - - Google Patents
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- JPWO2021176930A5 JPWO2021176930A5 JP2022505054A JP2022505054A JPWO2021176930A5 JP WO2021176930 A5 JPWO2021176930 A5 JP WO2021176930A5 JP 2022505054 A JP2022505054 A JP 2022505054A JP 2022505054 A JP2022505054 A JP 2022505054A JP WO2021176930 A5 JPWO2021176930 A5 JP WO2021176930A5
- Authority
- JP
- Japan
- Prior art keywords
- group
- mass
- polymer
- film
- propylene
- 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.)
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- 239000010410 layer Substances 0.000 description 17
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 14
- 229920000642 polymer Polymers 0.000 description 14
- 229920001155 polypropylene Polymers 0.000 description 14
- 229910052719 titanium Inorganic materials 0.000 description 14
- 239000010936 titanium Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 12
- -1 polypropylene Polymers 0.000 description 11
- 229920001384 propylene homopolymer Polymers 0.000 description 11
- 239000003990 capacitor Substances 0.000 description 9
- 239000003484 crystal nucleating agent Substances 0.000 description 9
- 239000004743 Polypropylene Substances 0.000 description 8
- 150000002681 magnesium compounds Chemical class 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 6
- 239000002344 surface layer Substances 0.000 description 6
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 5
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 5
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 4
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 4
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 3
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 3
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 3
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 230000003472 neutralizing effect Effects 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- IGGDKDTUCAWDAN-UHFFFAOYSA-N 1-vinylnaphthalene Chemical class C1=CC=C2C(C=C)=CC=CC2=C1 IGGDKDTUCAWDAN-UHFFFAOYSA-N 0.000 description 1
- ROHFBIREHKPELA-UHFFFAOYSA-N 2-[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]prop-2-enoic acid;methane Chemical compound C.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O ROHFBIREHKPELA-UHFFFAOYSA-N 0.000 description 1
- WPMYUUITDBHVQZ-UHFFFAOYSA-M 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=CC(CCC([O-])=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-M 0.000 description 1
- OLGHJTHQWQKJQQ-UHFFFAOYSA-N 3-ethylhex-1-ene Chemical compound CCCC(CC)C=C OLGHJTHQWQKJQQ-UHFFFAOYSA-N 0.000 description 1
- YPVPQMCSLFDIKA-UHFFFAOYSA-N 3-ethylpent-1-ene Chemical compound CCC(CC)C=C YPVPQMCSLFDIKA-UHFFFAOYSA-N 0.000 description 1
- YHQXBTXEYZIYOV-UHFFFAOYSA-N 3-methylbut-1-ene Chemical compound CC(C)C=C YHQXBTXEYZIYOV-UHFFFAOYSA-N 0.000 description 1
- LDTAOIUHUHHCMU-UHFFFAOYSA-N 3-methylpent-1-ene Chemical compound CCC(C)C=C LDTAOIUHUHHCMU-UHFFFAOYSA-N 0.000 description 1
- SUJVAMIXNUAJEY-UHFFFAOYSA-N 4,4-dimethylhex-1-ene Chemical compound CCC(C)(C)CC=C SUJVAMIXNUAJEY-UHFFFAOYSA-N 0.000 description 1
- KLCNJIQZXOQYTE-UHFFFAOYSA-N 4,4-dimethylpent-1-ene Chemical compound CC(C)(C)CC=C KLCNJIQZXOQYTE-UHFFFAOYSA-N 0.000 description 1
- OPMUAJRVOWSBTP-UHFFFAOYSA-N 4-ethyl-1-hexene Chemical compound CCC(CC)CC=C OPMUAJRVOWSBTP-UHFFFAOYSA-N 0.000 description 1
- SUWJESCICIOQHO-UHFFFAOYSA-N 4-methylhex-1-ene Chemical compound CCC(C)CC=C SUWJESCICIOQHO-UHFFFAOYSA-N 0.000 description 1
- HIDWBDFPTDXCHL-UHFFFAOYSA-N CCCCO[Mg] Chemical compound CCCCO[Mg] HIDWBDFPTDXCHL-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 125000005073 adamantyl group Chemical group C12(CC3CC(CC(C1)C3)C2)* 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 1
- 125000000596 cyclohexenyl group Chemical group C1(=CCCCC1)* 0.000 description 1
- 125000000058 cyclopentadienyl group Chemical group C1(=CC=CC1)* 0.000 description 1
- 125000002433 cyclopentenyl group Chemical group C1(=CCCC1)* 0.000 description 1
- 238000004807 desolvation Methods 0.000 description 1
- ZSWFCLXCOIISFI-UHFFFAOYSA-N endo-cyclopentadiene Chemical group C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 1
- PTOQCUYVGKZAFS-UHFFFAOYSA-N ethenylcycloheptane Chemical compound C=CC1CCCCCC1 PTOQCUYVGKZAFS-UHFFFAOYSA-N 0.000 description 1
- LDLDYFCCDKENPD-UHFFFAOYSA-N ethenylcyclohexane Chemical compound C=CC1CCCCC1 LDLDYFCCDKENPD-UHFFFAOYSA-N 0.000 description 1
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 description 1
- GCPCLEKQVMKXJM-UHFFFAOYSA-N ethoxy(diethyl)alumane Chemical compound CCO[Al](CC)CC GCPCLEKQVMKXJM-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- KRTCPMDBLDWJQY-UHFFFAOYSA-M magnesium;ethanolate;chloride Chemical compound [Mg+2].[Cl-].CC[O-] KRTCPMDBLDWJQY-UHFFFAOYSA-M 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- BQBCXNQILNPAPX-UHFFFAOYSA-N methoxy(dimethyl)alumane Chemical compound [O-]C.C[Al+]C BQBCXNQILNPAPX-UHFFFAOYSA-N 0.000 description 1
- PQYRGTGTFRXFEN-UHFFFAOYSA-N methoxy-bis(2-methylpropyl)alumane Chemical compound CC(C)C[Al](OC)CC(C)C PQYRGTGTFRXFEN-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 229930015698 phenylpropene Natural products 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2024107480A JP7720962B2 (ja) | 2020-03-06 | 2024-07-03 | コンデンサ用多層ポリプロピレンフィルム |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020038760 | 2020-03-06 | ||
| PCT/JP2021/003914 WO2021176930A1 (ja) | 2020-03-06 | 2021-02-03 | コンデンサ用多層ポリプロピレンフィルム |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2024107480A Division JP7720962B2 (ja) | 2020-03-06 | 2024-07-03 | コンデンサ用多層ポリプロピレンフィルム |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPWO2021176930A1 JPWO2021176930A1 (https=) | 2021-09-10 |
| JPWO2021176930A5 true JPWO2021176930A5 (https=) | 2022-12-06 |
Family
ID=77614233
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022505054A Pending JPWO2021176930A1 (https=) | 2020-03-06 | 2021-02-03 | |
| JP2024107480A Active JP7720962B2 (ja) | 2020-03-06 | 2024-07-03 | コンデンサ用多層ポリプロピレンフィルム |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2024107480A Active JP7720962B2 (ja) | 2020-03-06 | 2024-07-03 | コンデンサ用多層ポリプロピレンフィルム |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12384908B2 (https=) |
| EP (1) | EP4116997A4 (https=) |
| JP (2) | JPWO2021176930A1 (https=) |
| KR (1) | KR102788647B1 (https=) |
| CN (1) | CN115210833B (https=) |
| WO (1) | WO2021176930A1 (https=) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4502018A4 (en) * | 2022-03-30 | 2026-04-01 | Toray Industries | POLYPROPYLENE FILM, METALLIC MEMBRANE LAMINATED FILM USING IT, AND FILM CAPACITOR |
| CN120226109A (zh) | 2022-12-28 | 2025-06-27 | 株式会社可乐丽 | 薄膜电容器用膜 |
| CN119319707A (zh) * | 2023-07-17 | 2025-01-17 | 中国石油天然气股份有限公司 | 耐高温聚丙烯电容膜及其制备方法 |
| WO2025153523A1 (en) * | 2024-01-19 | 2025-07-24 | Borealis Gmbh | Bopp capacitor film with peculiar roughness statistics |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5586784U (https=) | 1978-12-11 | 1980-06-14 | ||
| JPS5883006A (ja) | 1981-11-13 | 1983-05-18 | Mitsui Petrochem Ind Ltd | オレフインの重合方法 |
| JPS62275143A (ja) * | 1986-05-23 | 1987-11-30 | Mitsubishi Petrochem Co Ltd | ポリ−３−メチル−１−ブテン強化組成物 |
| JP2941017B2 (ja) | 1990-08-10 | 1999-08-25 | 三井化学株式会社 | オレフィン重合用固体状チタン触媒成分、オレフイン重合用触媒およびオレフィンの重合方法 |
| JPH08143580A (ja) | 1994-11-18 | 1996-06-04 | Toho Titanium Co Ltd | 有機ケイ素化合物および電子供与体 |
| JP2002154187A (ja) * | 2000-09-05 | 2002-05-28 | Toray Ind Inc | ポリプロピレンフィルムおよびフィルムコンデンサー |
| JP2004002742A (ja) | 2002-04-04 | 2004-01-08 | Mitsui Chemicals Inc | オレフィン重合用固体状チタン触媒成分、オレフィン重合用触媒およびオレフィンの重合方法 |
| JP5557231B2 (ja) | 2009-05-28 | 2014-07-23 | 独立行政法人日本原子力研究開発機構 | 多孔質セラミックス繊維体の製造方法 |
| ES2398714T3 (es) | 2010-08-06 | 2013-03-21 | Borealis Ag | Película de BOPP con alta resistencia a la ruptura en AC |
| JP6484959B2 (ja) | 2014-03-31 | 2019-03-20 | 王子ホールディングス株式会社 | コンデンサ用二軸延伸ポリプロピレンフィルム |
| JP6445562B2 (ja) | 2014-07-31 | 2018-12-26 | 三井化学株式会社 | コンデンサフィルム用プロピレン単独重合体組成物およびその製造方法、並びにコンデンサフィルム |
| CN106574061B (zh) | 2014-09-19 | 2019-09-27 | 东丽株式会社 | 聚丙烯膜和膜电容器 |
| JP6369342B2 (ja) | 2015-01-30 | 2018-08-08 | 王子ホールディングス株式会社 | ２軸延伸ポリプロピレンフィルム |
| WO2016159044A1 (ja) * | 2015-03-31 | 2016-10-06 | 株式会社プライムポリマー | フィルムコンデンサ用ポリプロピレン、フィルムコンデンサ用二軸延伸フィルム、フィルムコンデンサ、およびこれらの製造方法 |
| CN108137833B (zh) * | 2015-10-16 | 2021-01-05 | 博里利斯股份公司 | 由丙烯聚合物组合物制成的双轴取向膜 |
| EP3184587B1 (en) | 2015-12-21 | 2020-03-18 | Borealis AG | Extruded articles with improved optical properties |
| JP6843529B2 (ja) * | 2016-06-14 | 2021-03-17 | 株式会社プライムポリマー | シーラント用ポリプロピレン系樹脂組成物 |
| JP6651997B2 (ja) * | 2016-06-28 | 2020-02-19 | 三菱ケミカル株式会社 | 積層多孔フィルム及びその製造方法 |
-
2021
- 2021-02-03 JP JP2022505054A patent/JPWO2021176930A1/ja active Pending
- 2021-02-03 US US17/908,896 patent/US12384908B2/en active Active
- 2021-02-03 EP EP21764457.4A patent/EP4116997A4/en active Pending
- 2021-02-03 WO PCT/JP2021/003914 patent/WO2021176930A1/ja not_active Ceased
- 2021-02-03 CN CN202180018976.XA patent/CN115210833B/zh active Active
- 2021-02-03 KR KR1020227029929A patent/KR102788647B1/ko active Active
-
2024
- 2024-07-03 JP JP2024107480A patent/JP7720962B2/ja active Active
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