JPH0438130B2 - - Google Patents
Info
- Publication number
- JPH0438130B2 JPH0438130B2 JP59053270A JP5327084A JPH0438130B2 JP H0438130 B2 JPH0438130 B2 JP H0438130B2 JP 59053270 A JP59053270 A JP 59053270A JP 5327084 A JP5327084 A JP 5327084A JP H0438130 B2 JPH0438130 B2 JP H0438130B2
- Authority
- JP
- Japan
- Prior art keywords
- dust removal
- fatty acid
- stretching
- acid metal
- metal salt
- 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
Links
- 239000000463 material Substances 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- 150000003839 salts Chemical class 0.000 claims description 18
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 16
- 239000000194 fatty acid Substances 0.000 claims description 16
- 229930195729 fatty acid Natural products 0.000 claims description 16
- 150000004665 fatty acids Chemical class 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000002861 polymer material Substances 0.000 claims description 8
- 239000000428 dust Substances 0.000 description 36
- 239000000835 fiber Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 239000002657 fibrous material Substances 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- -1 polypropylene Polymers 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 6
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 239000011777 magnesium Chemical class 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 235000013351 cheese Nutrition 0.000 description 3
- 235000019359 magnesium stearate Nutrition 0.000 description 3
- 238000002074 melt spinning Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000011045 prefiltration Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical class [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920005594 polymer fiber Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- 208000035285 Allergic Seasonal Rhinitis Diseases 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical class [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- JJCSYJVFIRBCRI-UHFFFAOYSA-K aluminum;hexadecanoate Chemical compound [Al].CCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCC([O-])=O JJCSYJVFIRBCRI-UHFFFAOYSA-K 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/28—Plant or installations without electricity supply, e.g. using electrets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
- H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
- H01G7/021—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric
- H01G7/023—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric of macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/39—Electrets separator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Filtering Materials (AREA)
- Electrostatic Separation (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59053270A JPS60196921A (ja) | 1984-03-19 | 1984-03-19 | エレクトレツト化材料の製造法 |
| US06/712,488 US4652282A (en) | 1984-03-19 | 1985-03-18 | Electretized material for a dust filter |
| DE3509857A DE3509857C2 (de) | 1984-03-19 | 1985-03-19 | Elektretisiertes Staubfilter und dessen Herstellung |
| US06/914,043 US4789504A (en) | 1984-03-19 | 1986-10-01 | Electretized material for a dust filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59053270A JPS60196921A (ja) | 1984-03-19 | 1984-03-19 | エレクトレツト化材料の製造法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60196921A JPS60196921A (ja) | 1985-10-05 |
| JPH0438130B2 true JPH0438130B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-06-23 |
Family
ID=12938054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59053270A Granted JPS60196921A (ja) | 1984-03-19 | 1984-03-19 | エレクトレツト化材料の製造法 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4652282A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
| JP (1) | JPS60196921A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (65)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3509857C2 (de) * | 1984-03-19 | 1994-04-28 | Toyo Boseki | Elektretisiertes Staubfilter und dessen Herstellung |
| US5143524A (en) * | 1990-02-20 | 1992-09-01 | The Scott Fetzer Company | Electrostatic particle filtration |
| US5376168A (en) * | 1990-02-20 | 1994-12-27 | The L. D. Kichler Co. | Electrostatic particle filtration |
| US5405434A (en) * | 1990-02-20 | 1995-04-11 | The Scott Fetzer Company | Electrostatic particle filtration |
| TW254955B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1992-09-25 | 1995-08-21 | Ciba Geigy | |
| US9737497B2 (en) | 1993-06-24 | 2017-08-22 | Trutek Corp. | Electrostatically charged nasal application method and product for micro-filtration |
| CA2124237C (en) | 1994-02-18 | 2004-11-02 | Bernard Cohen | Improved nonwoven barrier and method of making the same |
| CA2136576C (en) | 1994-06-27 | 2005-03-08 | Bernard Cohen | Improved nonwoven barrier and method of making the same |
| AU4961696A (en) | 1994-12-08 | 1996-06-26 | Kimberly-Clark Worldwide, Inc. | Method of forming a particle size gradient in an absorbent article |
| CA2153278A1 (en) | 1994-12-30 | 1996-07-01 | Bernard Cohen | Nonwoven laminate barrier material |
| WO1996037276A1 (en) * | 1995-05-25 | 1996-11-28 | Kimberly-Clark Worldwide, Inc. | Filter matrix |
| ZA965786B (en) * | 1995-07-19 | 1997-01-27 | Kimberly Clark Co | Nonwoven barrier and method of making the same |
| US5908598A (en) * | 1995-08-14 | 1999-06-01 | Minnesota Mining And Manufacturing Company | Fibrous webs having enhanced electret properties |
| US5834384A (en) | 1995-11-28 | 1998-11-10 | Kimberly-Clark Worldwide, Inc. | Nonwoven webs with one or more surface treatments |
| US6162535A (en) | 1996-05-24 | 2000-12-19 | Kimberly-Clark Worldwide, Inc. | Ferroelectric fibers and applications therefor |
| US5800866A (en) * | 1996-12-06 | 1998-09-01 | Kimberly-Clark Worldwide, Inc. | Method of preparing small particle dispersions |
| US6537932B1 (en) | 1997-10-31 | 2003-03-25 | Kimberly-Clark Worldwide, Inc. | Sterilization wrap, applications therefor, and method of sterilizing |
| US6365088B1 (en) | 1998-06-26 | 2002-04-02 | Kimberly-Clark Worldwide, Inc. | Electret treatment of high loft and low density nonwoven webs |
| US6759356B1 (en) | 1998-06-30 | 2004-07-06 | Kimberly-Clark Worldwide, Inc. | Fibrous electret polymeric articles |
| US6432175B1 (en) | 1998-07-02 | 2002-08-13 | 3M Innovative Properties Company | Fluorinated electret |
| US6573205B1 (en) * | 1999-01-30 | 2003-06-03 | Kimberly-Clark Worldwide, Inc. | Stable electret polymeric articles |
| US6110588A (en) | 1999-02-05 | 2000-08-29 | 3M Innovative Properties Company | Microfibers and method of making |
| US6630231B2 (en) * | 1999-02-05 | 2003-10-07 | 3M Innovative Properties Company | Composite articles reinforced with highly oriented microfibers |
| US6406657B1 (en) * | 1999-10-08 | 2002-06-18 | 3M Innovative Properties Company | Method and apparatus for making a fibrous electret web using a wetting liquid and an aqueous polar liquid |
| US6375886B1 (en) | 1999-10-08 | 2002-04-23 | 3M Innovative Properties Company | Method and apparatus for making a nonwoven fibrous electret web from free-fiber and polar liquid |
| US6454986B1 (en) | 1999-10-08 | 2002-09-24 | 3M Innovative Properties Company | Method of making a fibrous electret web using a nonaqueous polar liquid |
| US6743464B1 (en) | 2000-04-13 | 2004-06-01 | 3M Innovative Properties Company | Method of making electrets through vapor condensation |
| US6420024B1 (en) | 2000-12-21 | 2002-07-16 | 3M Innovative Properties Company | Charged microfibers, microfibrillated articles and use thereof |
| US6680114B2 (en) | 2001-05-15 | 2004-01-20 | 3M Innovative Properties Company | Fibrous films and articles from microlayer substrates |
| US20060079145A1 (en) * | 2004-10-13 | 2006-04-13 | Hollingsworth & Vose Company | Filter media with charge stabilizing and enhancing additives |
| AU2008335536B2 (en) * | 2007-12-06 | 2011-11-17 | 3M Innovative Properties Company | Electret webs with charge-enhancing additives |
| US7765698B2 (en) * | 2008-06-02 | 2010-08-03 | 3M Innovative Properties Company | Method of making electret articles based on zeta potential |
| AU2009255469B2 (en) * | 2008-06-02 | 2012-03-29 | 3M Innovative Properties Company | Electret webs with charge-enhancing additives |
| AU2009255472A1 (en) * | 2008-06-02 | 2009-12-10 | 3M Innovative Properties Company | Charge-enhancing additives for electrets |
| WO2010002773A2 (en) * | 2008-06-30 | 2010-01-07 | 3M Innovative Properties Company | Method for in situ formation of metal nanoclusters within a porous substrate field |
| WO2010096285A2 (en) | 2009-02-20 | 2010-08-26 | 3M Innovative Properties Company | Antimicrobial electret web |
| EP2414573B1 (en) | 2009-04-03 | 2013-08-28 | 3M Innovative Properties Company | Electret webs with charge-enhancing additives |
| MX2011010443A (es) | 2009-04-03 | 2011-10-24 | 3M Innovative Properties Co | Auxiliares de procesamiento para redes olefinicas, incluyendo redes de electreto. |
| BR112015015420A2 (pt) | 2012-12-28 | 2017-07-11 | 3M Innovative Properties Co | mantas de eletreto com aditivos acentuadores de carga |
| RU2635160C2 (ru) | 2013-04-19 | 2017-11-09 | 3М Инновейтив Пропертиз Компани | Электретные полотна с добавками, способствующими накоплению заряда |
| US10240269B2 (en) | 2014-06-23 | 2019-03-26 | 3M Innovative Properties Company | Electret webs with charge-enhancing additives |
| CN108026327B (zh) | 2015-07-07 | 2022-07-05 | 3M创新有限公司 | 具有离子添加剂的聚合物基体 |
| MX2018000117A (es) | 2015-07-07 | 2018-03-22 | 3M Innovative Properties Co | Tramas de electreto con aditivos mejoradores de la carga. |
| CA2991489A1 (en) | 2015-07-07 | 2017-01-12 | 3M Innovative Properties Company | Substituted benzotriazole phenolate salts and antioxidant compositions formed therefrom |
| CN108026054B (zh) | 2015-07-07 | 2021-10-15 | 3M创新有限公司 | 取代的苯并三唑酚 |
| WO2018127831A1 (en) | 2017-01-05 | 2018-07-12 | 3M Innovative Properties Company | Electret webs with charge-enhancing additives |
| CN114096700A (zh) | 2019-06-28 | 2022-02-25 | 3M创新有限公司 | 芯-鞘纤维、非织造纤维幅材以及包括它们的呼吸器 |
| US20220323890A1 (en) | 2019-06-28 | 2022-10-13 | 3M Innovative Properties Company | Filter assembly, prefilter assembly, and respirator including the same |
| WO2021074863A1 (en) | 2019-10-16 | 2021-04-22 | 3M Innovative Properties Company | Dual-function melt additives |
| CN114555691B (zh) | 2019-10-16 | 2023-11-28 | 3M创新有限公司 | 取代的苯并咪唑熔体添加剂 |
| US20220410045A1 (en) | 2019-12-03 | 2022-12-29 | 3M Innovative Properties Company | Thiolate salt melt additives |
| US20220401862A1 (en) | 2019-12-03 | 2022-12-22 | 3M Innovative Properties Company | Aromatic-heterocyclic ring melt additives |
| EP4097285B1 (en) | 2020-01-27 | 2024-06-26 | 3M Innovative Properties Company | Substituted thiol melt additives |
| CN115427622B (zh) | 2020-01-27 | 2023-09-15 | 3M创新有限公司 | 取代的硫醇盐熔体添加剂 |
| CN115768543A (zh) | 2020-07-08 | 2023-03-07 | 3M创新有限公司 | 包括纺粘预过滤器的褶皱型过滤组件 |
| US20230285884A1 (en) | 2020-08-11 | 2023-09-14 | 3M Innovative Properties Company | Electret webs with benzoate salt charge-enhancing additives |
| CN116348190A (zh) | 2020-08-11 | 2023-06-27 | 3M创新有限公司 | 具有羧酸或羧酸盐电荷增强添加剂的驻极体料片 |
| EP4237601A1 (en) | 2020-11-02 | 2023-09-06 | 3M Innovative Properties Company | Core-sheath fibers, nonwoven fibrous web, and filtering articles including the same |
| WO2022130080A1 (en) | 2020-12-18 | 2022-06-23 | 3M Innovative Properties Company | Electrets comprising a substituted cyclotriphosphazene compound and articles therefrom |
| WO2024137158A1 (en) | 2022-12-21 | 2024-06-27 | 3M Innovative Properties Company | Shirred filter media and methods of making and using the same |
| WO2024214054A1 (en) | 2023-04-13 | 2024-10-17 | 3M Innovative Properties Company | Respiratory protection devices and methods of manufacturing the same |
| WO2024214065A1 (en) | 2023-04-13 | 2024-10-17 | 3M Innovative Properties Company | Filter media for filtration devices and methods of making and using the same |
| WO2025125970A1 (en) | 2023-12-15 | 2025-06-19 | 3M Innovative Properties Company | Respiratory protection devices and methods of manufacturing the same |
| WO2025125969A1 (en) | 2023-12-15 | 2025-06-19 | 3M Innovative Properties Company | Respiratory protection devices and methods of manufacturing the same |
| WO2025133782A1 (en) | 2023-12-18 | 2025-06-26 | 3M Innovative Properties Company | Respiratory protection devices and methods of manufacturing the same |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5090643A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-12-15 | 1975-07-19 | ||
| DE2443216C3 (de) * | 1974-09-10 | 1979-02-08 | Kraftwerk Union Ag, 4330 Muelheim | Verfahren und Vorrichtung zur Isotopenanreicherung |
| US4215682A (en) * | 1978-02-06 | 1980-08-05 | Minnesota Mining And Manufacturing Company | Melt-blown fibrous electrets |
| US4254028A (en) * | 1978-03-27 | 1981-03-03 | Asahi-Dow Limited | Styrene resin composition |
| JPS5624013A (en) * | 1979-05-04 | 1981-03-07 | Nitta Kk | Structure of air filter element |
| US4375718A (en) * | 1981-03-12 | 1983-03-08 | Surgikos, Inc. | Method of making fibrous electrets |
| EP0090062B1 (de) * | 1982-03-29 | 1987-02-04 | Rhodia Ag | Verfahren und Vorrichtung zur Herstellung von Elektret-Filamenten, -Spinnfasern oder dergleichen |
| DE3239086A1 (de) * | 1982-10-22 | 1984-04-26 | Degussa Ag, 6000 Frankfurt | Costabilisator fuer polyvinylchlorid |
-
1984
- 1984-03-19 JP JP59053270A patent/JPS60196921A/ja active Granted
-
1985
- 1985-03-18 US US06/712,488 patent/US4652282A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4652282A (en) | 1987-03-24 |
| JPS60196921A (ja) | 1985-10-05 |
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