CA1138584A - Preparation de membranes-filtres hydrophiles, en polyamide, sans pellicule - Google Patents

Preparation de membranes-filtres hydrophiles, en polyamide, sans pellicule

Info

Publication number: CA1138584A
Authority: CA; Canada
Prior art keywords: polyamide resin; membrane; process according; solution; substrate
Prior art date: 1978-05-15
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

Application number

CA000327483A

Other languages

English (en)

Inventor

David B. Pall

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Pall Corp

Original Assignee

Pall Corp

Priority date (The priority date 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 date listed.)

1978-05-15

Filing date

1979-05-11

Publication date

1982-12-28

1979-05-11 Application filed by Pall Corp filed Critical Pall Corp

1980-10-20 Priority claimed from US06198569 external-priority patent/US4340479B1/en

1982-12-28 Application granted granted Critical

1982-12-28 Publication of CA1138584A publication Critical patent/CA1138584A/fr

Status Expired legal-status Critical Current

Links

239000012528 membrane Substances 0.000 title claims abstract description 446
239000004952 Polyamide Substances 0.000 title claims abstract description 49
229920002647 polyamide Polymers 0.000 title claims abstract description 46
238000002360 preparation method Methods 0.000 title description 11
238000005266 casting Methods 0.000 claims abstract description 194
238000000034 method Methods 0.000 claims abstract description 144
229920006122 polyamide resin Polymers 0.000 claims abstract description 131
239000010408 film Substances 0.000 claims abstract description 114
230000008569 process Effects 0.000 claims abstract description 107
239000002904 solvent Substances 0.000 claims abstract description 99
239000000758 substrate Substances 0.000 claims abstract description 93
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
239000007788 liquid Substances 0.000 claims abstract description 48
230000006911 nucleation Effects 0.000 claims abstract description 36
238000010899 nucleation Methods 0.000 claims abstract description 36
239000002245 particle Substances 0.000 claims abstract description 32
238000001035 drying Methods 0.000 claims abstract description 28
239000000203 mixture Substances 0.000 claims abstract description 25
125000006367 bivalent amino carbonyl group Chemical group [H]N([*:1])C([*:2])=O 0.000 claims abstract description 16
125000000325 methylidene group Chemical group [H]C([H])=* 0.000 claims abstract description 15
239000002244 precipitate Substances 0.000 claims abstract description 15
238000005406 washing Methods 0.000 claims abstract description 15
239000010409 thin film Substances 0.000 claims abstract description 14
230000007480 spreading Effects 0.000 claims abstract description 13
238000003892 spreading Methods 0.000 claims abstract description 13
230000001376 precipitating effect Effects 0.000 claims abstract description 11
238000007865 diluting Methods 0.000 claims abstract description 5
238000013019 agitation Methods 0.000 claims abstract 4
239000000243 solution Substances 0.000 claims description 255
229920005989 resin Polymers 0.000 claims description 194
239000011347 resin Substances 0.000 claims description 194
239000011148 porous material Substances 0.000 claims description 130
BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 122
OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 62
235000019253 formic acid Nutrition 0.000 claims description 61
-1 polyhexamethylene sebacamide Polymers 0.000 claims description 33
239000000463 material Substances 0.000 claims description 28
238000002156 mixing Methods 0.000 claims description 28
229920002302 Nylon 6,6 Polymers 0.000 claims description 21
230000002209 hydrophobic effect Effects 0.000 claims description 20
238000004519 manufacturing process Methods 0.000 claims description 15
229920000728 polyester Polymers 0.000 claims description 9
229920000305 Nylon 6,10 Polymers 0.000 claims description 8
239000004743 Polypropylene Substances 0.000 claims description 8
229920001155 polypropylene Polymers 0.000 claims description 8
230000008859 change Effects 0.000 claims description 7
238000009792 diffusion process Methods 0.000 claims description 6
238000010790 dilution Methods 0.000 claims description 6
239000012895 dilution Substances 0.000 claims description 6
LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 5
230000001939 inductive effect Effects 0.000 claims description 5
238000009835 boiling Methods 0.000 claims description 4
230000001464 adherent effect Effects 0.000 claims description 2
239000007864 aqueous solution Substances 0.000 claims description 2
229920001225 polyester resin Polymers 0.000 claims 5
239000004645 polyester resin Substances 0.000 claims 5
JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 claims 2
KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims 2
RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims 1
GUOSQNAUYHMCRU-UHFFFAOYSA-N 11-Aminoundecanoic acid Chemical compound NCCCCCCCCCCC(O)=O GUOSQNAUYHMCRU-UHFFFAOYSA-N 0.000 claims 1
239000002202 Polyethylene glycol Substances 0.000 claims 1
230000009969 flowable effect Effects 0.000 claims 1
WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
229920001748 polybutylene Polymers 0.000 claims 1
229920001223 polyethylene glycol Polymers 0.000 claims 1
229920001059 synthetic polymer Polymers 0.000 claims 1
239000000706 filtrate Substances 0.000 abstract description 5
210000004379 membrane Anatomy 0.000 description 358
239000010410 layer Substances 0.000 description 48
239000000047 product Substances 0.000 description 31
229920000642 polymer Polymers 0.000 description 30
238000007792 addition Methods 0.000 description 27
241000894006 Bacteria Species 0.000 description 22
238000001556 precipitation Methods 0.000 description 22
239000004677 Nylon Substances 0.000 description 19
229920001778 nylon Polymers 0.000 description 19
230000015572 biosynthetic process Effects 0.000 description 18
238000001914 filtration Methods 0.000 description 18
239000007787 solid Substances 0.000 description 15
239000002609 medium Substances 0.000 description 14
238000010791 quenching Methods 0.000 description 14
230000009467 reduction Effects 0.000 description 14
239000012530 fluid Substances 0.000 description 13
239000011521 glass Substances 0.000 description 12
239000003085 diluting agent Substances 0.000 description 11
229920002678 cellulose Polymers 0.000 description 10
230000006870 function Effects 0.000 description 10
230000000171 quenching effect Effects 0.000 description 10
241000589516 Pseudomonas Species 0.000 description 9
239000002253 acid Substances 0.000 description 9
238000012360 testing method Methods 0.000 description 9
PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 8
238000001878 scanning electron micrograph Methods 0.000 description 8
238000009736 wetting Methods 0.000 description 8
238000006957 Michael reaction Methods 0.000 description 7
238000010924 continuous production Methods 0.000 description 7
238000007654 immersion Methods 0.000 description 7
230000035699 permeability Effects 0.000 description 7
LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
229920002292 Nylon 6 Polymers 0.000 description 6
230000001276 controlling effect Effects 0.000 description 6
230000007423 decrease Effects 0.000 description 6
230000000694 effects Effects 0.000 description 6
229910052751 metal Inorganic materials 0.000 description 6
239000002184 metal Substances 0.000 description 6
238000007789 sealing Methods 0.000 description 6
239000004698 Polyethylene Substances 0.000 description 5
230000002776 aggregation Effects 0.000 description 5
238000004220 aggregation Methods 0.000 description 5
239000012510 hollow fiber Substances 0.000 description 5
230000001965 increasing effect Effects 0.000 description 5
229920000573 polyethylene Polymers 0.000 description 5
239000004094 surface-active agent Substances 0.000 description 5
239000000654 additive Substances 0.000 description 4
239000001913 cellulose Substances 0.000 description 4
229920001577 copolymer Polymers 0.000 description 4
239000000835 fiber Substances 0.000 description 4
NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
230000007062 hydrolysis Effects 0.000 description 4
238000006460 hydrolysis reaction Methods 0.000 description 4
230000036512 infertility Effects 0.000 description 4
238000001000 micrograph Methods 0.000 description 4
239000012982 microporous membrane Substances 0.000 description 4
239000002985 plastic film Substances 0.000 description 4
229920005668 polycarbonate resin Polymers 0.000 description 4
239000004431 polycarbonate resin Substances 0.000 description 4
238000001223 reverse osmosis Methods 0.000 description 4
239000011877 solvent mixture Substances 0.000 description 4
239000000126 substance Substances 0.000 description 4
230000008093 supporting effect Effects 0.000 description 4
229920003002 synthetic resin Polymers 0.000 description 4
239000000057 synthetic resin Substances 0.000 description 4
230000007704 transition Effects 0.000 description 4
238000000108 ultra-filtration Methods 0.000 description 4
UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
241000100287 Membras Species 0.000 description 3
DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
RHQDFWAXVIIEBN-UHFFFAOYSA-N Trifluoroethanol Chemical compound OCC(F)(F)F RHQDFWAXVIIEBN-UHFFFAOYSA-N 0.000 description 3
239000012298 atmosphere Substances 0.000 description 3
230000001580 bacterial effect Effects 0.000 description 3
230000004888 barrier function Effects 0.000 description 3
238000012937 correction Methods 0.000 description 3
208000028659 discharge Diseases 0.000 description 3
238000009826 distribution Methods 0.000 description 3
238000010981 drying operation Methods 0.000 description 3
235000011187 glycerol Nutrition 0.000 description 3
230000036961 partial effect Effects 0.000 description 3
239000008188 pellet Substances 0.000 description 3
230000035515 penetration Effects 0.000 description 3
229920003023 plastic Polymers 0.000 description 3
239000004033 plastic Substances 0.000 description 3
239000004627 regenerated cellulose Substances 0.000 description 3
238000000926 separation method Methods 0.000 description 3
229920001169 thermoplastic Polymers 0.000 description 3
239000004416 thermosoftening plastic Substances 0.000 description 3
238000011144 upstream manufacturing Methods 0.000 description 3
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
241000196324 Embryophyta Species 0.000 description 2
TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
101100257011 Mus musculus Skil gene Proteins 0.000 description 2
241001163743 Perlodes Species 0.000 description 2
240000004808 Saccharomyces cerevisiae Species 0.000 description 2
150000001298 alcohols Chemical class 0.000 description 2
239000003963 antioxidant agent Substances 0.000 description 2
239000012736 aqueous medium Substances 0.000 description 2
230000008901 benefit Effects 0.000 description 2
238000012512 characterization method Methods 0.000 description 2
239000000356 contaminant Substances 0.000 description 2
239000013078 crystal Substances 0.000 description 2
238000011161 development Methods 0.000 description 2
230000018109 developmental process Effects 0.000 description 2
125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
238000006073 displacement reaction Methods 0.000 description 2
238000004090 dissolution Methods 0.000 description 2
239000002355 dual-layer Substances 0.000 description 2
238000001704 evaporation Methods 0.000 description 2
230000008020 evaporation Effects 0.000 description 2
238000002474 experimental method Methods 0.000 description 2
239000002657 fibrous material Substances 0.000 description 2
HQVFCQRVQFYGRJ-UHFFFAOYSA-N formic acid;hydrate Chemical compound O.OC=O HQVFCQRVQFYGRJ-UHFFFAOYSA-N 0.000 description 2
238000001879 gelation Methods 0.000 description 2
238000010438 heat treatment Methods 0.000 description 2
229920001519 homopolymer Polymers 0.000 description 2
229930195733 hydrocarbon Natural products 0.000 description 2
150000002430 hydrocarbons Chemical class 0.000 description 2
229920001477 hydrophilic polymer Polymers 0.000 description 2
125000001165 hydrophobic group Chemical group 0.000 description 2
229920001600 hydrophobic polymer Polymers 0.000 description 2
238000005304 joining Methods 0.000 description 2
238000005259 measurement Methods 0.000 description 2
244000005700 microbiome Species 0.000 description 2
239000003960 organic solvent Substances 0.000 description 2
230000001590 oxidative effect Effects 0.000 description 2
229920006255 plastic film Polymers 0.000 description 2
239000004014 plasticizer Substances 0.000 description 2
229920006254 polymer film Polymers 0.000 description 2
229920005597 polymer membrane Polymers 0.000 description 2
229920000098 polyolefin Polymers 0.000 description 2
229920002451 polyvinyl alcohol Polymers 0.000 description 2
235000019422 polyvinyl alcohol Nutrition 0.000 description 2
238000012545 processing Methods 0.000 description 2
230000000717 retained effect Effects 0.000 description 2
150000003839 salts Chemical class 0.000 description 2
CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
239000002356 single layer Substances 0.000 description 2
239000000725 suspension Substances 0.000 description 2
230000008961 swelling Effects 0.000 description 2
230000003313 weakening effect Effects 0.000 description 2
BHMLFPOTZYRDKA-IRXDYDNUSA-N (2s)-2-[(s)-(2-iodophenoxy)-phenylmethyl]morpholine Chemical compound IC1=CC=CC=C1O[C@@H](C=1C=CC=CC=1)[C@H]1OCCNC1 BHMLFPOTZYRDKA-IRXDYDNUSA-N 0.000 description 1
BYEAHWXPCBROCE-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropan-2-ol Chemical compound FC(F)(F)C(O)C(F)(F)F BYEAHWXPCBROCE-UHFFFAOYSA-N 0.000 description 1
VAIZVCMDJPBJCM-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropan-2-one;trihydrate Chemical compound O.O.O.FC(F)(F)C(=O)C(F)(F)F.FC(F)(F)C(=O)C(F)(F)F VAIZVCMDJPBJCM-UHFFFAOYSA-N 0.000 description 1
KPWDGTGXUYRARH-UHFFFAOYSA-N 2,2,2-trichloroethanol Chemical compound OCC(Cl)(Cl)Cl KPWDGTGXUYRARH-UHFFFAOYSA-N 0.000 description 1
VEUMANXWQDHAJV-UHFFFAOYSA-N 2-[2-[(2-hydroxyphenyl)methylideneamino]ethyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCN=CC1=CC=CC=C1O VEUMANXWQDHAJV-UHFFFAOYSA-N 0.000 description 1
GGDYAKVUZMZKRV-UHFFFAOYSA-N 2-fluoroethanol Chemical compound OCCF GGDYAKVUZMZKRV-UHFFFAOYSA-N 0.000 description 1
VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 description 1
229920002799 BoPET Polymers 0.000 description 1
UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
241000288673 Chiroptera Species 0.000 description 1
DKMROQRQHGEIOW-UHFFFAOYSA-N Diethyl succinate Chemical compound CCOC(=O)CCC(=O)OCC DKMROQRQHGEIOW-UHFFFAOYSA-N 0.000 description 1
241001050985 Disco Species 0.000 description 1
VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
239000005977 Ethylene Substances 0.000 description 1
244000043261 Hevea brasiliensis Species 0.000 description 1
OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
239000005041 Mylar™ Substances 0.000 description 1
229920000784 Nomex Polymers 0.000 description 1
229920001007 Nylon 4 Polymers 0.000 description 1
229920000572 Nylon 6/12 Polymers 0.000 description 1
241000382928 Oxya Species 0.000 description 1
ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
239000004642 Polyimide Substances 0.000 description 1
239000004372 Polyvinyl alcohol Substances 0.000 description 1
RJKFOVLPORLFTN-LEKSSAKUSA-N Progesterone Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H](C(=O)C)[C@@]1(C)CC2 RJKFOVLPORLFTN-LEKSSAKUSA-N 0.000 description 1
229910000831 Steel Inorganic materials 0.000 description 1
239000007983 Tris buffer Substances 0.000 description 1
240000004543 Vicia ervilia Species 0.000 description 1
OHBTULDTCSOWOY-UHFFFAOYSA-N [C].C=C Chemical compound [C].C=C OHBTULDTCSOWOY-UHFFFAOYSA-N 0.000 description 1
238000010306 acid treatment Methods 0.000 description 1
150000007513 acids Chemical class 0.000 description 1
230000006978 adaptation Effects 0.000 description 1
230000002411 adverse Effects 0.000 description 1
230000032683 aging Effects 0.000 description 1
125000001931 aliphatic group Chemical group 0.000 description 1
230000004075 alteration Effects 0.000 description 1
150000001408 amides Chemical class 0.000 description 1
150000001413 amino acids Chemical class 0.000 description 1
230000003466 anti-cipated effect Effects 0.000 description 1
230000003078 antioxidant effect Effects 0.000 description 1
239000004760 aramid Substances 0.000 description 1
229920003235 aromatic polyamide Polymers 0.000 description 1
239000007767 bonding agent Substances 0.000 description 1
239000001110 calcium chloride Substances 0.000 description 1
229910001628 calcium chloride Inorganic materials 0.000 description 1
229920003086 cellulose ether Polymers 0.000 description 1
239000000919 ceramic Substances 0.000 description 1
238000001311 chemical methods and process Methods 0.000 description 1
FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 description 1
229940106681 chloroacetic acid Drugs 0.000 description 1
230000001427 coherent effect Effects 0.000 description 1
150000001875 compounds Chemical class 0.000 description 1
238000010276 construction Methods 0.000 description 1
238000011109 contamination Methods 0.000 description 1
238000004320 controlled atmosphere Methods 0.000 description 1
238000001816 cooling Methods 0.000 description 1
230000002596 correlated effect Effects 0.000 description 1
230000007797 corrosion Effects 0.000 description 1
238000005260 corrosion Methods 0.000 description 1
150000001896 cresols Chemical class 0.000 description 1
238000005520 cutting process Methods 0.000 description 1
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230000002939 deleterious effect Effects 0.000 description 1
238000001739 density measurement Methods 0.000 description 1
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238000013461 design Methods 0.000 description 1
238000004807 desolvation Methods 0.000 description 1
238000001514 detection method Methods 0.000 description 1
238000000502 dialysis Methods 0.000 description 1
150000004985 diamines Chemical class 0.000 description 1
JXTHNDFMNIQAHM-UHFFFAOYSA-N dichloroacetic acid Chemical class OC(=O)C(Cl)Cl JXTHNDFMNIQAHM-UHFFFAOYSA-N 0.000 description 1
230000001614 effect on membrane Effects 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
238000011067 equilibration Methods 0.000 description 1
150000002148 esters Chemical class 0.000 description 1
238000000605 extraction Methods 0.000 description 1
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238000007710 freezing Methods 0.000 description 1
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ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
239000003349 gelling agent Substances 0.000 description 1
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150000002500 ions Chemical class 0.000 description 1
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239000011159 matrix material Substances 0.000 description 1
230000007246 mechanism Effects 0.000 description 1
238000002844 melting Methods 0.000 description 1
230000008018 melting Effects 0.000 description 1
QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
229910052753 mercury Inorganic materials 0.000 description 1
150000002739 metals Chemical class 0.000 description 1
229920003052 natural elastomer Polymers 0.000 description 1
229920001194 natural rubber Polymers 0.000 description 1
239000004763 nomex Substances 0.000 description 1
239000002674 ointment Substances 0.000 description 1
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235000014366 other mixer Nutrition 0.000 description 1
239000011236 particulate material Substances 0.000 description 1
239000012466 permeate Substances 0.000 description 1
238000005191 phase separation Methods 0.000 description 1
150000002989 phenols Chemical class 0.000 description 1
WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
230000000704 physical effect Effects 0.000 description 1
239000003880 polar aprotic solvent Substances 0.000 description 1
229920006112 polar polymer Polymers 0.000 description 1
229920001707 polybutylene terephthalate Polymers 0.000 description 1
239000004417 polycarbonate Substances 0.000 description 1
229920000515 polycarbonate Polymers 0.000 description 1
229920000139 polyethylene terephthalate Polymers 0.000 description 1
239000005020 polyethylene terephthalate Substances 0.000 description 1
229920001721 polyimide Polymers 0.000 description 1
229920005862 polyol Polymers 0.000 description 1
150000003077 polyols Chemical class 0.000 description 1
229920001343 polytetrafluoroethylene Polymers 0.000 description 1
239000004810 polytetrafluoroethylene Substances 0.000 description 1
239000004800 polyvinyl chloride Substances 0.000 description 1
229920000915 polyvinyl chloride Polymers 0.000 description 1
238000011045 prefiltration Methods 0.000 description 1
230000002250 progressing effect Effects 0.000 description 1
238000005086 pumping Methods 0.000 description 1
230000005855 radiation Effects 0.000 description 1
230000002829 reductive effect Effects 0.000 description 1
239000013557 residual solvent Substances 0.000 description 1
230000004044 response Effects 0.000 description 1
230000000452 restraining effect Effects 0.000 description 1
230000000630 rising effect Effects 0.000 description 1
238000012216 screening Methods 0.000 description 1
238000004826 seaming Methods 0.000 description 1
241000894007 species Species 0.000 description 1
239000012798 spherical particle Substances 0.000 description 1
239000010959 steel Substances 0.000 description 1
230000001954 sterilising effect Effects 0.000 description 1
238000004659 sterilization and disinfection Methods 0.000 description 1
230000035882 stress Effects 0.000 description 1
150000005846 sugar alcohols Polymers 0.000 description 1
150000003462 sulfoxides Chemical class 0.000 description 1
238000004381 surface treatment Methods 0.000 description 1
229920003051 synthetic elastomer Polymers 0.000 description 1
DJZKNOVUNYPPEE-UHFFFAOYSA-N tetradecane-1,4,11,14-tetracarboxamide Chemical compound NC(=O)CCCC(C(N)=O)CCCCCCC(C(N)=O)CCCC(N)=O DJZKNOVUNYPPEE-UHFFFAOYSA-N 0.000 description 1
239000004753 textile Substances 0.000 description 1
238000012546 transfer Methods 0.000 description 1

Landscapes

Separation Using Semi-Permeable Membranes (AREA)
Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

CA000327483A 1978-05-15 1979-05-11 Preparation de membranes-filtres hydrophiles, en polyamide, sans pellicule Expired CA1138584A (fr)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
US90569878A	1978-05-15	1978-05-15
US905,698		1978-05-15
US198,569		1980-10-20
US06198569 US4340479B1 (en)	1978-05-15	1980-10-20	Process for preparing hydrophilic polyamide membrane filter media and product

Publications (1)

Publication Number	Publication Date
CA1138584A true CA1138584A (fr)	1982-12-28

Family

ID=26893924

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000327483A Expired CA1138584A (fr)	1978-05-15	1979-05-11	Preparation de membranes-filtres hydrophiles, en polyamide, sans pellicule

Country Status (1)

Country	Link
CA (1)	CA1138584A (fr)

1979
- 1979-05-11 CA CA000327483A patent/CA1138584A/fr not_active Expired

Legal Events

Date	Code	Title	Description
1999-12-29	MKEX	Expiry

Publication	Publication Date	Title
US4340479A (en)	1982-07-20	Process for preparing hydrophilic polyamide membrane filter media and product
EP0050789B1 (fr)	1986-02-12	Membranes filtrantes liquophiles et procédé de fabrication des dites membranes
EP0245863B1 (fr)	1992-03-18	Membranes d'ultrafiltration composites
EP0639106B1 (fr)	1998-12-23	Procede de fabrication d'une membrane microporeuse en polyfluorure de vinylidene
AU655193B2 (en)	1994-12-08	Narrow pore-size distribution polytetramethylene adipamide or nylon 46 membranes and process for making them
EP1682238B1 (fr)	2012-11-28	Membranes hydrophiles
JP3467940B2 (ja)	2003-11-17	複合膜、その製造方法および使用方法
US5264165A (en)	1993-11-23	Process of making polytetramethylene adipamide or nylon 46 membranes
CA1138584A (fr)	1982-12-28	Preparation de membranes-filtres hydrophiles, en polyamide, sans pellicule
CA1160007A (fr)	1984-01-10	Methode de preparation d'une membrane filtrante a base de polyamide hydrophile, et produit ainsi obtenu
JPS6388004A (ja)	1988-04-19	ポリアミド微孔質膜
JP2000506439A (ja)	2000-05-30	直接浸透濃縮化のための非対称の支持された膜
AT375024B (de)	1984-06-25	Filterelement
NO156965B (no)	1987-09-21	Filterelement.