CA2747562C - Single or multi-layer filter material and method for the production thereof - Google Patents
Single or multi-layer filter material and method for the production thereof Download PDFInfo
- Publication number
- CA2747562C CA2747562C CA2747562A CA2747562A CA2747562C CA 2747562 C CA2747562 C CA 2747562C CA 2747562 A CA2747562 A CA 2747562A CA 2747562 A CA2747562 A CA 2747562A CA 2747562 C CA2747562 C CA 2747562C
- Authority
- CA
- Canada
- Prior art keywords
- filter material
- hardener
- temperature
- cross
- filter
- 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 - Fee Related
Links
- 239000000463 material Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000004848 polyfunctional curative Substances 0.000 claims abstract description 52
- 238000004132 cross linking Methods 0.000 claims abstract description 27
- 239000003822 epoxy resin Substances 0.000 claims abstract description 26
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 26
- 239000011230 binding agent Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000001913 cellulose Substances 0.000 claims abstract description 9
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 8
- 229920002678 cellulose Polymers 0.000 claims abstract description 7
- 239000003365 glass fiber Substances 0.000 claims abstract description 7
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical group NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 4
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 229920000962 poly(amidoamine) Polymers 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims 3
- VZXTWGWHSMCWGA-UHFFFAOYSA-N 1,3,5-triazine-2,4-diamine Chemical compound NC1=NC=NC(N)=N1 VZXTWGWHSMCWGA-UHFFFAOYSA-N 0.000 claims 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 239000012209 synthetic fiber Substances 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 63
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 14
- 238000001035 drying Methods 0.000 description 13
- 230000035699 permeability Effects 0.000 description 13
- 229920001568 phenolic resin Polymers 0.000 description 13
- 239000005011 phenolic resin Substances 0.000 description 13
- 238000005470 impregnation Methods 0.000 description 11
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 10
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 230000009172 bursting Effects 0.000 description 9
- 238000005452 bending Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000010705 motor oil Substances 0.000 description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000004049 embossing Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 150000002460 imidazoles Chemical class 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229920003987 resole Polymers 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 description 1
- RDIMQHBOTMWMJA-UHFFFAOYSA-N 4-amino-3-hydrazinyl-1h-1,2,4-triazole-5-thione Chemical compound NNC1=NNC(=S)N1N RDIMQHBOTMWMJA-UHFFFAOYSA-N 0.000 description 1
- TYMLOMAKGOJONV-UHFFFAOYSA-N 4-nitroaniline Chemical compound NC1=CC=C([N+]([O-])=O)C=C1 TYMLOMAKGOJONV-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- LCFVJGUPQDGYKZ-UHFFFAOYSA-N Bisphenol A diglycidyl ether Chemical compound C=1C=C(OCC2OC2)C=CC=1C(C)(C)C(C=C1)=CC=C1OCC1CO1 LCFVJGUPQDGYKZ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000004844 aliphatic epoxy resin Substances 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000003225 biodiesel Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000001912 cyanamides Chemical class 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical class C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 150000002357 guanidines Chemical class 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000004658 ketimines Chemical class 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- -1 polyphenylene Polymers 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
-
- 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
- B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
-
- 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
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1043—Subsequent to assembly
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Filtering Materials (AREA)
- Epoxy Resins (AREA)
- Adhesives Or Adhesive Processes (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009006584.9 | 2009-01-29 | ||
| DE102009006584A DE102009006584B4 (de) | 2009-01-29 | 2009-01-29 | Ein- oder mehrlagiges Filtermaterial, Filterelement aus einem solchen Material und Verfahren zu dessen Herstellung |
| PCT/EP2009/007934 WO2010085992A1 (de) | 2009-01-29 | 2009-11-05 | Ein- oder mehrlagiges filtermaterial und verfahren zu dessen herstellung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2747562A1 CA2747562A1 (en) | 2010-08-05 |
| CA2747562C true CA2747562C (en) | 2013-05-07 |
Family
ID=41718647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2747562A Expired - Fee Related CA2747562C (en) | 2009-01-29 | 2009-11-05 | Single or multi-layer filter material and method for the production thereof |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20110290713A1 (enExample) |
| EP (1) | EP2382025B1 (enExample) |
| JP (1) | JP5524981B2 (enExample) |
| KR (1) | KR101374287B1 (enExample) |
| CN (1) | CN102300614B (enExample) |
| BR (1) | BRPI0924143A2 (enExample) |
| CA (1) | CA2747562C (enExample) |
| DE (1) | DE102009006584B4 (enExample) |
| ES (1) | ES2394150T3 (enExample) |
| PL (1) | PL2382025T3 (enExample) |
| SI (1) | SI2382025T1 (enExample) |
| WO (1) | WO2010085992A1 (enExample) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012010307B4 (de) * | 2012-05-24 | 2021-07-08 | Neenah Gessner Gmbh | Mehrlagiges Filtermaterial zur Flüssigkeitsfiltration sowie daraus hergestelltes Filterelement |
| CN104548748B (zh) * | 2013-10-15 | 2017-11-03 | 东北林业大学 | 炭化微米木纤维柴油车尾气pm过滤体 |
| CN103599664A (zh) * | 2013-10-30 | 2014-02-26 | 中国第一汽车股份有限公司 | 醛类树脂强化的超细含氧无机纤维束的制备方法 |
| CN103599665B (zh) * | 2013-10-30 | 2015-04-22 | 中国第一汽车股份有限公司 | 烃类树脂强化的超细碳纤维束的制备方法 |
| DE102014002033A1 (de) | 2014-02-13 | 2015-08-13 | Hydac Fluidcarecenter Gmbh | Filterelement und Verfahren zum Herstellen eines Filtermediums für ein solches Filterelement |
| EP3350276A4 (en) * | 2015-09-15 | 2019-04-24 | 3M Innovative Properties Company | ADHESIVE COMPOSITION AND ARTICLE MADE THEREFROM |
| DE102015122746B4 (de) * | 2015-12-23 | 2020-10-29 | Neenah Gessner Gmbh | Filtermaterial und daraus hergestelltes Filterelement |
| CN105771423B (zh) * | 2016-03-11 | 2018-02-02 | 宝鸡科达特种纸业有限责任公司 | 一种低温快速固化过滤材料及其制备方法 |
| CN105688514A (zh) * | 2016-03-21 | 2016-06-22 | 西安天厚滤清技术有限责任公司 | 用于油品过滤的聚酰胺滤材和滤芯 |
| SE542866C2 (en) * | 2018-04-04 | 2020-07-21 | Stora Enso Oyj | Method for manufacturing a dry-laid mat for thermoforming |
| CN115160736A (zh) * | 2022-08-19 | 2022-10-11 | 贵州至当科技有限公司 | 一种耐高温的彩色环氧树脂及制备方法 |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3347391A (en) * | 1964-10-29 | 1967-10-17 | Owens Corning Fiberglass Corp | Filter cartridge and method of making the same |
| US3966657A (en) | 1974-02-05 | 1976-06-29 | Rexnord Inc. | Ambient temperature compensated resin-hardener fillers |
| US4130487A (en) * | 1976-04-05 | 1978-12-19 | Process Scientific Innovations Ltd. | Filters for liquids or gases |
| JPS55134622A (en) * | 1979-04-09 | 1980-10-20 | Taiho Kogyo Co Ltd | Filter |
| AU553707B2 (en) * | 1982-04-27 | 1986-07-24 | Borden (Uk) Limited | Impregnated filter paper |
| JPS6025518A (ja) * | 1983-07-21 | 1985-02-08 | Dainippon Ink & Chem Inc | 樹脂補強フイルタ−・エレメント |
| US4515848A (en) * | 1983-09-23 | 1985-05-07 | Gates Formed Fibre Products Inc. | Materials and methods for making resin-rigidified articles |
| US4623462A (en) * | 1984-10-29 | 1986-11-18 | The Bf Goodrich Company | Oil filters using water-based latex binders |
| JPS6375044A (ja) * | 1986-09-17 | 1988-04-05 | Toto Ltd | 連続気孔多孔体の製造方法 |
| DE4206392A1 (de) * | 1992-02-29 | 1993-09-02 | Hoechst Ag | Haertungsmittel fuer epoxidharze |
| DE4410785A1 (de) * | 1994-03-28 | 1995-10-05 | Hoechst Ag | Amin-modifizierte Epoxidharz-Zusammensetzung |
| US5629379A (en) * | 1994-09-27 | 1997-05-13 | Harper; John D. | Anhydride-hardened epoxy resin with polybutadiene-maleic anhydride adduct |
| WO2003104284A2 (en) * | 2002-06-06 | 2003-12-18 | Georgia-Pacific Resins, Inc. | Epoxide-type formaldehyde free insulation binder |
| FR2861721B1 (fr) * | 2003-11-05 | 2006-01-27 | Saint Gobain Isover | Composition d'encollage pour produit isolant a base de laine minerale et produits resultants |
| DE102005011044A1 (de) * | 2005-03-08 | 2006-09-14 | Basf Ag | Offenzellige Schaumstoffe, Verfahren zu ihrer Herstellung und ihre Verwendung |
| US20060277877A1 (en) * | 2005-06-10 | 2006-12-14 | Lydall, Inc. | High efficiency fuel filter |
| DE102005032395A1 (de) * | 2005-07-12 | 2007-01-25 | Mahle International Gmbh | Filtermedium für technische Anwendungen und Verfahren seiner Herstellung |
| JP2008169301A (ja) * | 2007-01-11 | 2008-07-24 | Sekisui Chem Co Ltd | アレルゲン抑制製品、及びアレルゲン抑制組成物 |
-
2009
- 2009-01-29 DE DE102009006584A patent/DE102009006584B4/de not_active Expired - Fee Related
- 2009-11-05 KR KR1020117016695A patent/KR101374287B1/ko active Active
- 2009-11-05 SI SI200930382T patent/SI2382025T1/sl unknown
- 2009-11-05 CN CN200980155553.1A patent/CN102300614B/zh not_active Expired - Fee Related
- 2009-11-05 WO PCT/EP2009/007934 patent/WO2010085992A1/de not_active Ceased
- 2009-11-05 US US13/146,289 patent/US20110290713A1/en not_active Abandoned
- 2009-11-05 ES ES09756669T patent/ES2394150T3/es active Active
- 2009-11-05 PL PL09756669T patent/PL2382025T3/pl unknown
- 2009-11-05 EP EP09756669A patent/EP2382025B1/de active Active
- 2009-11-05 CA CA2747562A patent/CA2747562C/en not_active Expired - Fee Related
- 2009-11-05 BR BRPI0924143A patent/BRPI0924143A2/pt active Search and Examination
- 2009-11-05 JP JP2011546603A patent/JP5524981B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010085992A1 (de) | 2010-08-05 |
| CN102300614A (zh) | 2011-12-28 |
| EP2382025A1 (de) | 2011-11-02 |
| CA2747562A1 (en) | 2010-08-05 |
| CN102300614B (zh) | 2015-04-08 |
| JP5524981B2 (ja) | 2014-06-18 |
| JP2012516225A (ja) | 2012-07-19 |
| US20110290713A1 (en) | 2011-12-01 |
| BRPI0924143A2 (pt) | 2016-02-10 |
| DE102009006584B4 (de) | 2011-06-01 |
| EP2382025B1 (de) | 2012-09-05 |
| ES2394150T3 (es) | 2013-01-22 |
| DE102009006584A1 (de) | 2010-08-05 |
| KR20110104055A (ko) | 2011-09-21 |
| PL2382025T3 (pl) | 2013-02-28 |
| KR101374287B1 (ko) | 2014-03-14 |
| SI2382025T1 (en) | 2012-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2747562C (en) | Single or multi-layer filter material and method for the production thereof | |
| US12023612B2 (en) | Filtration media | |
| KR20070085813A (ko) | 향상된 고강도, 고용량 필터 매체 및 구조 | |
| JP2014513217A (ja) | 高温処理される媒体 | |
| EP2969112B1 (en) | Method of making a thin filtration media | |
| KR20240038044A (ko) | 에어 필터용 여과재 및 그 제조 방법 | |
| EP4178706B1 (en) | Filtration media | |
| US20210070976A1 (en) | Resin binder composition and filter medium comprising the resin binder composition | |
| KR102657574B1 (ko) | 연도 가스 여과 매체 | |
| WO2015110694A1 (en) | Method of making a thin filtration media | |
| EP3789452A1 (en) | Resin binder composition and filter medium comprising the resin binder composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20210831 |
|
| MKLA | Lapsed |
Effective date: 20191105 |