CN1398241A - Cationically charged coating on glass fibers - Google Patents
Cationically charged coating on glass fibers Download PDFInfo
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- CN1398241A CN1398241A CN99814543A CN99814543A CN1398241A CN 1398241 A CN1398241 A CN 1398241A CN 99814543 A CN99814543 A CN 99814543A CN 99814543 A CN99814543 A CN 99814543A CN 1398241 A CN1398241 A CN 1398241A
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- functionalized
- cationic polymer
- functionalized cationic
- glass fibre
- coating
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- 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
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2003—Glass or glassy material
- B01D39/2017—Glass or glassy material the material being filamentary or fibrous
- B01D39/2024—Glass or glassy material the material being filamentary or fibrous otherwise bonded, e.g. by resins
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
- C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
- C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C03C25/328—Polyamides
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
- C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C03C25/34—Condensation polymers of aldehydes, e.g. with phenols, ureas, melamines, amides or amines
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- Filtering Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
A glass fiber having a cationically charged coating thereon, the coating including a functionalized cationic polymer crosslinkable by heat, in which the functionalized cationic polymer has been crosslinked by heat after being coated onto the glass fiber. Also provided is a fibrous filter including glass fibers having a cationically charged coating thereon, the coating including a functionalized cationic polymer crosslinkable by heat, in which the functionalized cationic polymer has been crosslinked by heat after being coated onto the glass fibers. Further provided is a method of preparing a fibrous filter. The method involves providing a fibrous filter which includes glass fibers, passing a solution of a functionalized cationic polymer crosslinkable by heat through a fibrous filter under conditions sufficient to substantially coat the fibers with the functionalized cationic polymer, and sufficient to crosslink the functionalized cationic polymer present on the glass fibers.
Description
Background of the present invention
The present invention relates to filter material.More particularly, the present invention relates to charge-modified filter.
Charge-modified filter is known in this technology.They generally are made of microporous membrane or comprise the use glass fibre, the adulterant of glass fibre and cellulosic fibre, or cellulosic fibre and the such material of siliceous particulate adulterant.Charge-modified be by with charge modifiers and independent linking agent coating film or at least some fiber finish, to guarantee the weather resistance of coating.
Though microporous membrane generally can effectively filter, the flow velocity by this film will be lower than fibrous filters usually.And when filter operation, microporous membrane has higher back pressure than fibrous filters.Therefore, require fibrous filters to have effective filtration capacity for charged particle.Also require fibrous filters to constitute, do not need deposition step, linking agent, or cellulosic fibre or the existence of siliceous particulate by glass fibre.
Summary of the present invention
The present invention solves some difficulty discussed above and problem by the glass fibre that scribbles band positively charged ion coating thereon is provided.This coating comprises a kind of by the functionalized cationic polymer of heat cross-linking.That is to say that this functionalized cationic polymer is being coated onto on the glass fibre later on by heat cross-linking.As an example, this functionalized cationic polymer can be the polyamine of epichlorohydrin-functionalized or the polyamidoamines of epichlorohydrin-functionalized.
The present invention further provides a kind of fibrous filters, it comprises the glass fibre that has band positively charged ion coating thereon.This coating comprises a kind of functionalized cationic polymer, and this polymkeric substance is by heat cross-linking; In other words, this functionalized cationic polymer on being applied to glass fibre after, by heat cross-linking.Have, this functionalized cationic polymer can be epichlorohydrin-functionalized polyamine or epichlorohydrin functionalized polyamido-amine again.
The present invention also provides a kind of method for preparing fibrous filters.This method comprises provides a kind of fibrous filters that comprises glass fibre, functionalized cationic polymer solution that can heat cross-linking under being enough to basically with the condition of functionalized cationic polymer coated fiber by fibrous filters be enough to make the enough time of fibrous filters that the heat treated gained was coated with under the crosslinked temperature of this functionalized cationic polymer on the glass fibre.This functionalized polymeric can be epichlorohydrin-functionalized polyamine or epichlorohydrin functionalized polyamido-amine.
The invention provides the many advantages that surpass the previously known material, the first, method of the present invention need not used independent or auxiliary deposition agent or linking agent.The second, method of the present invention can be used for the operate continuously on the cylinder.The 3rd, do not need cellulosic component.Certainly, other advantages will be conspicuous for the those of ordinary skill in this technology.
Detailed description of the present invention
As used term, mean the group that in coating and polymkeric substance, has many positively chargeds respectively here about the coating on the glass fibre " with cationic " with about " cationic " of functionalized polymeric.Therefore, term " with cationic " and " positively charged " are synonymous.The group of this positively charged typically comprises many quaternary ammonium groups, but is not limited to them.
Term " functionalized " is used for meaning here at cationic polymers, beyond the decationize group, exists many functional groups, and they can be crosslinked when standing to heat.Therefore, these functional groups be can heat cross-linking group.The example of this functional group comprises epoxy group(ing), ethyleneimino and table sulfenyl (episulfido).These functional groups are easy to and other radical reaction that is present in usually in the cationic polymers.Other group of this class has at least one nucleophile usually, and be with amino, and hydroxyl and thiol are example.Can notice, functional group and the reaction of group in addition also often produce other can with the group of functional group reactions.For example, epoxy group(ing) is reacted the generation that causes β-hydroxylamino with amino.
Therefore, " functionalized cationic polymer " this term means and comprises any polymkeric substance that contains many positively charged groups and many functional groups that said functional group can be crosslinked by heating.The example of useful especially this base polymer is epichlorohydrin-functionalized polyamine and epichlorohydrin functionalized polyamido-amine.The example of this two base polymer is Kymene
Resin derives from Hercules Inc., Wilmington, Delaware.Other suitable material comprises cationic modified starch, as RediBond, from National Starch.
As used here, term " heat cross-linking " means functionalized cationic polymer and has heated the sufficiently long time being enough to make under the crosslinked temperature of above-mentioned functional group.Heating temperature generally changes between about 50 ℃ to about 120 ℃.Generally be the function of the type of the functional group that exists in temperature and the cationic polymers heat-up time.For example heat-up time can be less than 1 minute to about 60 minutes or more between change.
Term ζDian Shi (also claiming electrokinetic potential) is used for meaning the potential difference between the moving part of the fixedly liquid level that is connected with solid phase surface and liquid substrate diffusion layer here.ζDian Shi can calculate by the known method of those of ordinary skill in this technology.As an example, referring to Robert J.Hunter, " Zeta Potential in Colloid Science ", Academic Press, New York, 1981; Pay special attention to the 3rd chapter " calculating of ξ electromotive force " and the 4th chapter " measurement of moving electrical parameter ".When lacking sufficiently high electrolyte concentration, the general positive ξ electromotive force of generation in surface and the electronegative surface of positively charged generally produce negative ξ electromotive force.
As noted, the invention provides a kind of glass fibre, be with cationic coating on it.This coating comprises can be by the functionalized cationic polymer of heat cross-linking, wherein said functionalized cationic polymer on being coated onto glass fibre after by heat exchange.
The example of useful especially functionalized cationic polymer is epichlorohydrin-functionalized polyamine and epichlorohydrin functionalized polyamido-amine.The example of this two base polymer is Kymene
Resin, it derives from Hercules Inc., Wilmington, Delaware.Other suitable material comprises cationic modified starch, as RediBond, derives from National Starch.Preferred functionalized cationic polymer is epichlorohydrin-functionalized polyamine or epichlorohydrin functionalized polyamido-amine.
The present invention further provides a kind of fibrous filters that comprises glass fibre, be with cationic coating above the glass fibre.This coating be above-mentioned can be by the functionalized cationic polymer of heat cross-linking.
Generally, this fibrous filters contains the glass fibre by whole fibre weight at least 50% weight that exists in the filter.In some embodiments, 100% fiber can be a glass fibre basically.Yet when other fibers exist, they will be cellulosic fibre usually, the fiber that is made by the synthetic thermoplastic polymer, or their mixture.
The source of cellulosic fibre only as explaining, comprises timber, as softwood and hard material; Straw and grass are as rice, cogongrass, wheat, rye and sabadilla (Sabai); Sugarcane and reed are as bagasse; Bamboo; Wooden cane is as jute, flax, kenaf and hemp; Phloem fiber is as linen and ramie; Leaf is as manila hemp and sisal; And seed, as cotton and cotton linter.Softwood and hard material are more generally originated with cellulosic fibre; This fiber can obtain by any beating (one-tenth) paste-making method, as machinery, chemical machinery, half chemistry and method chemistry.
The example of softwood comprises, only as explaining longleaf pine, jack pine, torch pine, temperature ground pine, south pine, Picea mariana, white spruce, jack pine, glue fir, Pseudotsuga menziesii (Mirbel) Franco, tsuga heterophylla, metasequoia and Sabina virginiana.The example of hard material comprises, still only as explaining aspen, birch, beech, robur, maple and rubber tree.
The example of thermoplastic polymer comprises that only conduct is explained, end capped polyacetals, and as polyoxymethylene, parachloral, poly-valeraldehyde, metaldehyde and poly-propionic aldehyde; Acrylic polymers, as polyacrylamide, polyacrylic acid, polymethyl acrylic acid, polyethyl acrylate, and polymethylmethacrylate; Fluorocarbon polymer, as tetrafluoroethylene, the perfluorination ethylene-propylene copolymer, ethylene-tetrafluoroethylene copolymer, voltalef, ethylene-chlorotrifluoro-ethylene copolymer, poly(vinylidene fluoride) is as fluorinated ethylene propylene; Polymeric amide, as poly--6-aminocaprolc acid or poly--ε-Ji Neixianan, polyhexamethylene adipamide, polyhexamethylene sebacamide and getting-the 11-aminoundecanoic acid; Polyaramide is as poly-imino--1,3-phenylene imino-isophthaloyl or poly-metaphenylene isophthaloyl amine; Poly-(to the phenylene dimethyl) is as poly-(terephthalylidene) and poly-(chloro-is to xylylene); Polyaryl ether is as poly-(oxygen connection-2,6-dimethyl-1,4-phenylene) or poly-(to penylene oxygen) (Poly (P-Phenyleneoxide)); Polyaryl sulfone is as poly-(oxygen connection-1,4-phenylene alkylsulfonyl-1, the inferior phenoxy group-1 of 4-, 4-phenylene-isopropylidene-1,4-phenylene) and poly-(alkylsulfonyl-1, the inferior phenoxy group-1 of 4-, 4-phenylene alkylsulfonyl-4,4 '-biphenylene); Polycarbonate is as poly bisphenol) or poly-(carbonyldioxy-1,4-phenylene isopropylidene-1,4-phenylene); Polyester, as polyethylene terephthalate, polytetramethylene terephthalate and poly terephthalic acid cyclohexylidene-1,4-two methylene esters or poly-(oxygen methylene radical-1, the inferior methoxyl group terephthaloyl of 4-cyclohexylidene); Polyimide is as poly(pyromellitimido)-1; Polyolefine, as polyethylene, polypropylene, poly-1-butylene, poly-2-butylene, poly--1 amylene, poly--the 3-Methyl-1-pentene) and poly--4-methyl-1-pentene; Vinyl polymer, as polyvinyl acetate, poly(vinylidene chloride), and polyvinyl chloride; Diene polymer, as 1,2-gathers-1,3-butadiene, and 1,4-gathers-1,3-butadiene, polyisoprene, and sovprene; Polystyrene; Above-mentioned multipolymer is as acrylonitrile-butadiene-styrene (ABS) (ABS) multipolymer etc.
When the fiber that exists in the fibrous filters except that glass fibre, they are cellulosic fibre preferably, the fiber that is prepared by TPO, or their mixture.The example of TPO comprises polyethylene, polypropylene, poly-(1-butylene), poly-(2-butylene), poly-(1-amylene), poly-(2-amylene), poly-(3-Methyl-1-pentene), poly-(4-methyl-1-pentene) etc.In addition, these terms mean polyolefine and random and adulterant segmented copolymer that comprises that two or more are prepared by two or more different unsaturated monomers.Because their commercial value, most preferred polyolefine is polyethylene and polypropylene.
The present invention further provides a kind of method for preparing fibrous filters.This method be included in be enough to basically with the solution of functionalized cationic polymer that can heat cross-linking under the condition of functionalized cationic polymer coated fiber by comprising glass fibre fibrous filters and in the fibrous filters of the resulting coating of temperature and time scope heat treated that is enough to make the functionalized cationic polymer exchange on the glass fibre.
Generally, the solution of this functionalized cationic polymer will be that a kind of weight by solution contains about 0.1% aqueous solution to about 10% weight functionalized cationic polymer.For example, this solution can contain 0.1% functionalized cationic polymer to about 5% weight of having an appointment.As another example, this solution can contain 0.1% functionalized cationic polymer to about 1% weight of having an appointment.
In some embodiments, the aqueous solution of this functionalized cationic polymer can contain a small amount of in water molten or can with water-soluble mixed polar organic solvent.If present, these solvents are lower than formation the liquid phase of 50% volume usually.For example this solvent can constitute the liquid phase that is less than about 20% volume.The example of this kind solvent comprises, only as explaining that lower alcohol is as methyl alcohol, ethanol, 1-propyl alcohol, Virahol, 1-butanols, isopropylcarbinol and the trimethyl carbinol; Ketone, as acetone, methyl ethyl ketone, and diethyl ketone; Diox; And N, dinethylformamide.
Depend on this functionalized cationic polymer, the pH that regulates this aqueous solution that contains polymkeric substance may be ideal and needs.For example, the aqueous solution of epichlorohydrin-functionalized polyamine or epichlorohydrin functionalized polyamido-amine preferably has alkalescence or slightly acidic pH value.For example, the pH scope of this solution can be about 6 to about 10.The method of utilizing this technology those of ordinary skill to know is easy to regulate pH.For example, by in polymkeric substance, adding mineral acid, example hydrochloric acid or vitriolic dilute solution, or basic solution, as sodium hydroxide, potassium hydroxide, or the solution of ammonium hydroxide, can regulate pH.
The solution of this functionalized cationic polymer can utilize in this technology the known any method of those of ordinary skill to pass through fibrous filters.For example, by the one side decompression at filter, this face is the reverse side that applies the one side of solution, makes this solution be passed through filter by " attraction ".In addition, can make solution be forced through filter by exerting pressure.
In case the fiber of filter is with the coating of this functionalized cationic polymer, the heat cross-linking that this polymkeric substance is applied in being enough to make the crosslinked temperature and time scope of functional group in the polymkeric substance.Usually temperature can change between about 50 ℃ to about 150 ℃.The function of functional group's type that normally exist in temperature and this cationic polymers heat-up time.For example, heat-up time can from about 60 minutes of about 1-or more between change.
The present invention further describes with following example.Yet these examples can not limit the spirit and scope of the present invention by any way.
Example 1
By dilute 2ml stock Kymene with the 100ml deionized water
450 solution (20% weight solid) preparation contains 0.4% weight epichlorohydrin functionalized polyamido-amine (Kymene
450, Hercules Inc., Wilmington Delaware) the aqueous solution.The pH of this solution is about 6, and without re-adjustment pH, because Kymene
Effective pH scope of 450 is about 5-9.Kymene with this dilution of 25ml
450 solution be poured onto on the fento glass filter of 90mm diameter (Whatman type GF/D, 2.7 microns in aperture, WhatmanInternational Ltd., Maidstone, England), this filter itself is placed on again in the thick sintered glass funnel.This funnel is placed in one and filters in the flask, and this flask is vacuumized, and attracts solution by 20 seconds time of glass filter, thereby uses polymer-coated fiber.Take off this filter from funnel, and in baking oven, heated 1 hour down, so that the crosslinked polymer that exists on the glass filter in 85 ℃.After taking out, with the distilled deionized water wash filter of 500ml, with the working method coated fiber of often using in the past from baking oven.Then, filter washed, that be coated with is carried out dry air.
Contrast 0.5 micron diameter polystyrene latex particulate (having the carboxylic acid functional that produces 7.0 μ eg/g surface titration values) and do not having tensio-active agent (Bangs Laboratory, Inc., Fishers Indiana) is suspended in the 100ml water, is every milliliter 10 in concentration
8The floating efficient that obtains of test filter under the particle.Two-layer 2 inches (about 5.1cm) diameter filter discs cutting off on the 90mm dish are placed on (250ml in the reusable filtration reservoir of Nalgene of two inches (about 5.1cm) diameters, Nalgene#300-4000, Nalge Nunc International, Napervile, Illinois).Particle solution is passed through this filter by gravity.(its combined basis weight that has is 6 oz/yd by the glass fibre that was coated with
2Or osy (about 203g/m
2Or gsm) filter this solution, the particle more than 99.9% is removed.
The ζDian Shi of Whatman glass filter is-46 millivolts before coating, the coating back is the 16-36 millivolt.The ζDian Shi of cured film is that (10mM is in distilled water according to Klorvess Liquid, 22 ℃ of pH4.7 and temperature) stream is fixed on electronic analyzer (EAK by several layers, Brookhaven Instruments Corporation, Hotlsville, New York) in the film frame on and the measurement of the streaming potential that produced of film and definite.Test method and method of calculation are published in " Particle Size DistributionII; Assessment and Characterization " (particle size distribution II by D.Fairhurst, appraisal and sign) in, the 22nd chapter, ACS Symposium Series 472, TheodoreProvder compiles.
Example 2
Repeat the operation of example 1, except reducing to 10 minutes from 1 hour used heat-up time for the polymkeric substance that exists on the crosslinked filter.The test of filter capture efficiency is carried out as described in example 1, has identical result.
Example 3
Repeat the operation of example 2, except being increased to 100 ℃ for the used Heating temperature of polymkeric substance that exists on the crosslinked filter.The test of filter capture efficiency is carried out as described in example 1, has identical result.
Example 4
Polyamidoamines (the Kymene that contains 0.4% weight epichlorohydrin-functionalized as preparation as described in the example 1
450, Hercules Inc., Wilmington Delaware) the aqueous solution.With this Kymene of 25ml
450 solution are poured onto (LB-5211-A on the fento glass filter of 90mm diameter ... O derives from Hollingsworth ﹠amp; Vose Company, EastWalpole, Massachusetts contains 3-7% acrylic resin adhesive and 0.5osy or about 17gsm Reemay and supports cotton lining (supporting scrim)), itself be placed in the thick sintered glass funnel.This funnel is placed in one and filters in the flask, and this flask is vacuumized, and attracts solution by 20 seconds time of glass filter, thereby uses polymer-coated fiber.Take off this filter from pan, and in baking oven in 85 ℃ the heating 1 hour so that the crosslinked polymer that exists on the glass filter.After taking out, with 1000 milliliters of distilled deionized water wash filters, with the method coated fiber that often uses in the past from baking oven.Then filter washed, that be coated with is carried out dry air.
The filter disc of 2 inches (about 5.1cm) diameters of individual layer that will cut off from 90mm dish is placed on the reusable filtration reservoir of Nalgene (described as example 1) of 2 inches (about 5.1cm) diameters.The sodium chloride solution of 100 milliliter of 0.1% weight passes through this filter by gravity.After this salt water washing, the polystyrene latex particulate of 0.5 micron diameter of 200ml described in the case of comparative examples 1 is tested the filter capture efficiency under the situation of surfactant-free.By mixing 100ml 0.2% weight sodium chloride solution and 100ml 2 * 10
8The particle solution of particle/ml prepares 200ml, and (every milliliter contains 10
8Particle) particle solution.Then gained solution is passed through filter by gravity.(the quantitative 2.2osy (about 75gsm) of being that it has) filters this solution by the glass filter after the coating, and the particle greater than 99.9% is removed.
Example 5
Repeat the operation of example 4, this filter also derives from Holling-Sworth ﹠amp except used fento glass filter is LA-8141-O-A; Vose Company, EastWalpole, Massachusetts and also contain the 3-7% acrylic resin adhesive and 0.5osy or about 17gsm Reemay support cotton lining.In example 4, by the glass filter filtering solution that was coated with, the particle greater than 99.9% is removed, and in this example, the quantitative of the glass filter that was coated with is 2.5osy (about 85gsm).
Although this specification sheets is described in detail at its particular, the technician in this technology will recognize, under the situation of understanding aforementioned content, can imagine the variation for these embodiments at an easy rate, change and equivalent.Therefore, scope of the present invention should be defined as the scope of claim and its any equivalent.
Claims (9)
1. a glass fibre has on it and is with cationic coating, and this coating contains: a kind of functionalized cationic polymer, this polymkeric substance is by heat cross-linking.
2. the glass fibre of claim 1, wherein functionalized cationic polymer is the epichlorohydrin-functionalized polyamine.
3. the glass fibre of claim 2, wherein functionalized cationic polymer is an epichlorohydrin functionalized polyamido-amine.
4. fibrous filters, it contains glass fibre, has on this glass fibre to be with cationic coating, and this coating contains: a kind of by the functionalized cationic polymer of heat cross-linking.
5. the fibrous filters of claim 4, wherein functionalized cationic polymer is the epichlorohydrin-functionalized polyamine.
6. the fibrous filters of claim 5, wherein functionalized cationic polymer is an epichlorohydrin functionalized polyamido-amine.
7. method for preparing fibrous filters, this method comprises:
The fibrous filters that contains glass fibre is provided;
The solution of functionalized cationic polymer that makes thermally cross-linkable under being enough to basically with the condition of functionalized cationic polymer coated fiber by fibrous filters and
Handle the fibrous filters of resulting coating being enough to make the crosslinked temperature and time scope internal heating of functionalized cationic polymer that exists on the glass fibre.
8. the method for claim 7, wherein functionalized cationic polymer is the epichlorohydrin-functionalized polyamine.
9. the method for claim 8, wherein functionalized cationic polymer is an epichlorohydrin functionalized polyamido-amine.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21605998A | 1998-12-18 | 1998-12-18 | |
| US09/216,059 | 1998-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1398241A true CN1398241A (en) | 2003-02-19 |
Family
ID=22805505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99814543A Pending CN1398241A (en) | 1998-12-18 | 1999-12-15 | Cationically charged coating on glass fibers |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1140724A1 (en) |
| CN (1) | CN1398241A (en) |
| AR (1) | AR021733A1 (en) |
| AU (1) | AU2588900A (en) |
| BR (1) | BR9915855A (en) |
| PE (1) | PE20001471A1 (en) |
| TW (1) | TW480246B (en) |
| WO (1) | WO2000037385A1 (en) |
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| GB2043734B (en) * | 1979-03-01 | 1983-08-17 | Amf Inc | Filter and method of making same |
| US4230573A (en) * | 1979-06-08 | 1980-10-28 | Amf Incorporated | Cartridge filter and method of making same |
| GB2056485B (en) * | 1979-08-09 | 1983-10-12 | Amf Inc | Beverage filtration process |
| US4523995A (en) * | 1981-10-19 | 1985-06-18 | Pall Corporation | Charge-modified microfiber filter sheets |
| JPS6058221A (en) * | 1983-09-09 | 1985-04-04 | Toyo Roshi Kk | Filter material for filtering air |
| US4915839A (en) * | 1984-03-15 | 1990-04-10 | Cuno, Incorporated | Process for surface modifying a microporous membrane |
| US5151189A (en) * | 1990-09-17 | 1992-09-29 | Gelman Sciences, Inc. | Cationic charge modified microporous membrane |
| US5721031A (en) * | 1993-07-21 | 1998-02-24 | Unitika Ltd. | Fiber-reinforced porous plastic tube |
-
1999
- 1999-12-13 TW TW088121775A patent/TW480246B/en not_active IP Right Cessation
- 1999-12-15 PE PE1999001258A patent/PE20001471A1/en not_active Application Discontinuation
- 1999-12-15 WO PCT/US1999/029702 patent/WO2000037385A1/en not_active Application Discontinuation
- 1999-12-15 EP EP99968480A patent/EP1140724A1/en not_active Withdrawn
- 1999-12-15 AU AU25889/00A patent/AU2588900A/en not_active Abandoned
- 1999-12-15 CN CN99814543A patent/CN1398241A/en active Pending
- 1999-12-15 BR BR9915855-8A patent/BR9915855A/en not_active Application Discontinuation
- 1999-12-18 AR ARP990106480A patent/AR021733A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110753678A (en) * | 2017-06-15 | 2020-02-04 | 德累斯顿莱布尼茨聚合物研究所 | Sizing agent-free and silane-free modified glass fiber surfaces, composites made therefrom, and methods of making modified glass fiber surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| PE20001471A1 (en) | 2000-12-25 |
| AR021733A1 (en) | 2002-07-31 |
| AU2588900A (en) | 2000-07-12 |
| WO2000037385A1 (en) | 2000-06-29 |
| EP1140724A1 (en) | 2001-10-10 |
| BR9915855A (en) | 2001-10-23 |
| TW480246B (en) | 2002-03-21 |
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