TW480246B - Cationically charged coating on glass fibers and method for making the same - Google Patents

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 treating the resulting coated fibrous filter with heat at a temperature and for a time sufficient to crosslink the functionalized cationic polymer present on the glass fibers. By way of example, the functionalized cationic polymer may be an epichlorohydrin-functionalized polyamine or an epichlorohydrin-functionalized polyamido-amine.

Description

480246 Α7 Β7 V. Description of the invention (1) IL Mingbei-The present invention relates to filtering substances. More specifically, the present invention relates to a superconducting material that changes the% of electricity. Charge-changing filters are known in the art. It is usually composed of a microporous film or uses glass fibers, a mixture of glass fibers and cellulose fibers, or a mixture of cellulose fibers and silicon particles. Changing the charge is usually accomplished by coating the film or at least one fraction of the fiber with a charge changing agent and separating the cross-linking agent to ensure the durability of the coating. Although microporous membranes are generally effective at filtering, the flow rate through the membrane is usually lower than that of fiber filters. Furthermore, during the filtration process, the back pressure of the microporous membrane is usually higher than that of the fibrous filter. Therefore, there is a need for a fiber filter that can effectively filter charged particles. There is also a need for a fiber filter made of glass fibers that does not require a precipitation step, a cross-linking agent, or the presence of cellulose fibers or silicon particles. The present invention solves the above-mentioned difficulties and problems by providing a glass fiber having a charge coating. This coating contains a functional cationic polymer that has been crosslinked by heating. In other words, the employees of the Intellectual Property Bureau of the Ministry of Economic Affairs, the Ministry of Economic Affairs, printed the clothes on the consumer cooperative to break the glass fiber and then heat it to form a cross bond. For example, the == ionic polymer can be an α-epichlorohydrin functional polyamine or an epoxy propane energetic polyamine. Ten # The present invention further provides a fiber filter comprising glass fibers having a cationic coating. This coating contains a functional cationic polymer that has been crosslinked by heating; in other words, the functional cationic polymer is crosslinked by heating after the field-breaking fibers of (5) Invention Description (2). In addition, the functional cationic polymer may be an? -Epoxychloropropane-functional polyamine or an? -Epoxychloropropane-functional polyamine. The invention also provides a method for preparing a fiber filter. The method includes providing a fiber filter having a glass fiber, passing a T-energy cationic polymer that has been heated to produce a cross-link through the fiber filter under a condition sufficient to completely cover the functional cationic polymer, and at a temperature The coated fiber aggregates produced by heating for a sufficient period of time cause functional cations on the glass fibers to crosslink. The functional cationic polymer may be an α-epoxy propane functional polyamine or an α-epoxy propane functional polyhelium amine. The present invention provides many advantages over previously known substances. First, the method of the present invention does not require the use of a separation or secondary precipitation or cross-linking agent. Second, the method of the present invention can be used in a continuous process of roller articles. Third, no cellulose component is required. Of course, those skilled in the art will know more about other advantages. The examples describe in detail the printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ^ The term "cationically charged" as used herein refers to a coating on glass fibers, while the " "Cationic" refers to the ions present in the coating and in many positively charged polymers, respectively. Therefore, "cationic charge," and "positive charge" are synonymous. Such pendant charges usually include (but are not limited to) many four-bond radicals. The term "FunCtiOnalized" is Refers to the presence of many functional groups in cationic polymers, rather than being able to form cross-linked cationic groups when heated. Therefore, functional groups are thermally cross-linkable groups. This type of functional group is suitable for this paper China National Standard (CNS) A4 (210 X 297 mm) 480246

5. Description of the invention (3 Dry examples include peroxy, ethimino, and episulfides. These functional groups can easily react with their cationic polymers. These other groups are usually at least two 2-reactive hydrogen atoms , Such as amino, hydroxyl, and thiol groups. Need / Wang thought that the reaction of rudyl and other groups will often produce groups that can react with other functional groups. For example, the reaction of epoxy and amino groups will Formation > 8-hydroxyamino group. Therefore, "fluorene ion functional polymer" refers to any polymer containing many positively charged groups and other functional groups capable of forming cross-links by heating. In such polymers Particularly useful examples are alpha-epoxypropane-functional polyamines, whose polymers include alpha-epoxychloropropane-functional polyamines. Two types of polymers are available from Kymene® resins from Hercules Inc., Wilmington, Delaware Other suitable resins include cationic altering pastes, such as Redibond by National Stareh. The term "thermally crosslinked" as used herein means that the coating of the cationic functional polymer has been at a temperature Heating for a period of time to form cross-links with the functional groups described above. The heating temperature can usually be varied from 50.00 to 1500c. The heating time is usually a function of temperature and depends on the type of functional group in the cationic polymer For example, the heating time can be less than one minute to 60 minutes or more. As used herein, "zeta potential" (also known as "potential energy") refers to a stationary liquid layer and a solid surface attached to a solid surface. The potential difference between the movable diffusion layers in the liquid. Ζ cannot be calculated by methods known in the art. For example, Robert J. Hunter, "In Colloid Science ?: Imitation Λ, Academic Press , New York, 1981; Chapter III, "The Calculation of Zeta Potential", and Chapter IV, "The size of the paper is subject to the Chinese National Standard (CNS) A4 (210 x 297 mm) ) 6 ---------- 丨 «.-install (please read the precautions on the back before filling this page) ----- ^ --------- AW1 A Ministry of Economic Affairs wisdom Printed by the Consumer Affairs Cooperative of the Property Bureau] / ν'ΡΚ-001-0592 5. Description of the invention ( 4) Measurement of dynamic number, (Measurement 〇f Ε1〇 Valence Parameters). In high-concentration electrolyte, positively charged surface usually generates positive € potential energy and overlying charged surface usually generates negative g potential energy. As described by Bu Li, The invention provides a glass having a cationic charge coating. The coating includes functional cations that form a cross-link by heating, wherein the ear energy cationic polymer 纟 is coated on the glass fiber by adding _ The formation of cross-linking. ^ A particularly useful example of this type of polymer is alpha-epoxychloropropane. Functional polyamines whose polymers contain alpha-epoxychloropropane-functional polyaminoamine compounds are available from Wilmington, Delaware. Kymene® resin for Hercuies hearts. Other suitable resins include cationic modifying polymers such as

Redibon from NatlOnal Starch. Ideally, the cationic functional polymer is an epichlorohydrin-functional polyamine or U-chlorochloropropane-guanamine. The present invention further provides a glass filter comprising a glass fiber having a cationic charge coating. This coating is a functional cationic polymer. Formed by heating to form a cross-link. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the fiber filter contains at least 50% by weight of glass fiber, and it depends on the weight of all fibers in the aggregate. In some implementations 〇〇 ※ glass fiber. However, 'if there are other fibers, the fibers prepared by It, or a mixture thereof, are infused. Sources of Irisin fibers include (by way of illustration only) trees, such as softwood, rice wheat, and forage, such as rice, sedge grass, wheat, s-shaped fibers and thatch 'such as Tibetan dregs; bamboo; woody stalks such as yellow, hemp? Asian and two hemp stalks of this paper size suitable for financial affairs _ (CNS) A4 specifications (21G X 297 male shame) 7 A7 A7 B7 V. Description of the invention (and hemp; bast fibers such as ramie and ning hemp · , Leaves, such as abaca and sisal; and seeds, such as cotton and cotton wool. ^. Slumber and hardwood are widely used as the source of cellulose fibers, crickets, and this fiber can be buried by any common The pulping process is used to manufacture, such as mechanical 'chemical machinery, semi-chemical, squatting ^ 3 to private order. Examples of cork include (for illustration only) Da Wangsong, Xiao Wang Hong, estimate, go frying ... Du Fu, Da Pine, black spruce, white spruce, jack pine, " hemlock, red &, and red cedar. Examples of hardwoods include (by way of illustration only) poplar, birch, beech, oak, maple, and rubber trees. Order Examples of thermoplastic polymers printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs include (only By way of example) Polyacetal with toe caps, such as poly (oxymethylene) or polyformic acid, poly (trichloroacetic acid), poly (n-valeric acid), and poly (propionaldehyde); propylene polymers, such as polypropylamine , Polyacrylic acid, poly (methacrylic acid), poly (ethyl acrylate), fluorene and poly (methylpropionate); gas carbon polymers, such as poly (tetrafluoroethylene), perfluoroethyl propylene Copolymer, ethylene_tetrafluoroethylene copolymer, poly (trifluoroethylene chloride), ethylene_trifluoroethane copolymer, poly (ethylene fork fluoride), and poly (vinyl fluoride); polyfluorene Amines, such as poly (6-aminohexanoic acid ethyl ester) or poly (ε-caprolactam), poly (cyclohexanehexanediamine diamine), poly (cyclohexanedecanediamine diamine), and poly (11_aminoundecane diacid); t aromatic donkey amines, such as poly (imine-1,3-phenylene-isoperanyl acid) or poly (w_ phenylene-isoperanylamine) ; Xylene plastics, such as poly? -Xylene and poly (chloro-Z7-dioxobenzene), polyaromatic hydroxy esters, such as poly (oxy-2,6-dimethyl-1,4-phenylene ) Or poly (P-oxyphenylene oxide) ; Polyaromatic sulfonamides, such as poly (oxy-1,4 · phenylene sulfonium-1,4-oxyphenylene-1,4-phenylene-isopropyl-1,2-phenylene) And poly (continuene-1,4-oxyphenylene-1,4-oxyphenylenesulfonyl-4,4'-secondary phenyl); polycarbonates, such as poly (bisphenol A) or poly (Carbonyldioxy-M-phenylene isopropyl), 4-phenylene); polyg, such as poly (acetylene-p-xylylene), and poly (tetramethylidene are suitable for this paper in China) National Standard (CNS) A4 Specification (210 X 297 mm) YHw-PK ~ nm.am 480246 A7

Please fill in this page and read the notes on the back «· # # 480246 7 V. Description of the invention (roughly, the solution of the functional cationic polymer is an aqueous solution with a content of 0 to 100%, based on the functional cationic polymer solution Depending on the weight ... For example, this solution may contain 0. W by weight of functional cationic polymer (s). Another example is that this solution may contain 0.1 to 1% by weight of functional cationic polymer. «Some examples of 'functional cations' The aqueous solution of the polymer may contain a small amount of polar organic solvent that can be dissolved or mixed with water. If necessary, the volume of these two solvents usually accounts for less than 5 ()% of the volume of the heterogeneous phase. For example, such dissolution shots account for: 20 of the phase product % Or less. Examples of such solvents include (by way of example only lower alcohols: such as methanol, ethanol 'propanol, isopropanol, i-butanol, isobutanol' and t-butanol; 酉 similar, such as acetone, Ding, Diethyla; 2. Smoldering; and stilbene-monomethylmethanine. The pH of the polymer-containing aqueous solution can be adjusted according to the functional cationic polymer. For example, α-epoxychloropropane functional group Polyamine or cardiac epichlorohydrin The functional polyamino amine may have an experimental or slightly acidic pH. For example, the pH of such a solution may be between 6 and 10. The pH may be adjusted by methods well known in the art. For example, 'borrowing The pH is adjusted by adding a diluted solution of an inorganic acid (such as hydrochloric acid or sulfuric acid, or a test solution such as sodium hydroxide, potassium hydroxide, or amine hydroxide solution) to the polymer. Intellectual Property Bureau, Ministry of Economic Affairs, Consumer Consumption Cooperative Printing can use any method known in the art to pass a solution of a cationic functional polymer through the fiber perforate. For example, the solution can be reduced by reducing the pressure on the opposite side of the permeate from which the pressure has been applied The solution is "attracted and passed through the filter. Alternatively, pressure can be used to force the solution through the filter. Once the fiber filter is coated with a cationic functional polymer, the polymer is heated sufficiently for a period of time at a temperature Time and the functional groups in the polymer 'paper size apply Chinese National Standard (CNS) A4 specifications (210 X 297 mm) YHW-PK-nnun ^ oo 10 A7 B7, invention description (8 groups produce parent chain. This The temperature can usually be varied between 5〇β〇_ΐ 50〇. The heating time is generally a function of temperature and the type of functional group in the cationic polymer. For example, it can be changed within 1 to 60 minutes when heating Or longer.

Please read the note on the back of the page I to fill in the page I. The present invention will be further explained by the following examples. However, these examples do not limit the scope and spirit of the present invention. Example 1 Dilute 2 mi of stored Kymene® 450 solution (containing 20% by weight of solids) with 100 ml of deionized water to make a solution containing 0.4% by weight of ^ -epoxychloropropane and hydrazine. Aqueous solution (Kymene (R), Hercules Inc., Wilmington Delaware). Because the effective pH range of Kymene⑧ 45〇 is between 5-9, and the pH of this solution is 6, the pH is not adjusted further. Pour 25 ml of Kymene 溶液 diluted solution onto a 90mm diameter microfiber glass fiber (Whatman Type GF / D, with a pore diameter of 2.7 microns, which has been placed in a rough fused glass funnel, Whatman International Ltd., Maidstone, Ministry of Economics Intellectual Property Printed by Bureau Consumers Cooperative

England). The funnel was placed in a filter flask, and the glass flask was emptied to draw the solution through the glass fibers for more than 20 seconds, thereby coating the fibers with the polymer. The filter was removed from the funnel and heated in an oven at 85 ° C for one hour to crosslink the polymer on the glass filter fibers. After removal from the furnace, the filter was washed with 500 ml of distilled and deionized water according to the fiber-coated procedure. This was then washed and the coated filter was air-dried. 100 ml of polystyrene latex microparticle suspension with a diameter of 0.5 micron (having a surface titration of 値 7_0 ueg / g carboxylic acid functional group) was used to test the efficiency of filtering the filter. The suspension did not have a surfactant (Bangs Laboratory, Inc. ., Fishers, Indian a) and a concentration of 108 particles per milliliter. From the 90 mm disc-shaped t-paper scale to the Chinese National Standard (CNS) A4 specification (210 X 29 ^ mm) YHW-PK-001-0592 480246 A7 V. Description of the invention (9 cut 2 inches (5. 丨^ Called a diameter filter disc, two layers of filter discs were placed in a 2-inch (5.1 cin) diameter Nalgene reuse filter container (obtained from NaperviUe,

Illinois <Nalge Nunc International, titled Nalgene # 300-4000 '250 ml). The particle suspension was passed through the filter by gravity. More than 99.9% of the particles were removed by passing the solution through a coating with a combined basis weight of 6 discs per square yard or 6 osy (203 g or 203 gsm per square meter).

Whatman glass filter has 46 millivolts in the $ position before coating, and 16-36 millivolts in the ξ position after coating. The potassium chloride solution (10 mM in distilled water, pH 4.7, and temperature 22 ° C) was passed through an electrokinetic analyzer (EKA? Brookhaven).

The potential energy of the vapour generated by several layers of thin film in a thin film support on Instruments Corporation, Hotlsville, New York) determines the zeta potential of the solid film. The test sequence and calculation method were published in "Particle Size Distribution II, Assessment and Characterization" by D. Fairhurst and V. Ribitsch, Chapter 22, ACS Paper Proceeding 5 Tiger 472 'Theodore Provder editing. Example 2 The procedure of Example 1 was repeated, but the time required to heat the polymer on the fibers of the filter to form a cross-link was reduced from one hour to 10 minutes. Filtration efficiency is achieved as described in Example 1. Example 3 The procedure of Example 2 was repeated, but the temperature required to heat the polymer on the fiber of the filter to form a cross-link was increased to 100 t. The filtering acquisition efficiency is completed as described in Example 1. This paper size applies to China National Standard (CNS) A4 (210 X 297 public copy) 12

Please read the note on the back I ·! Then fill in the two pages I order the printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economy YHW-PK-001-0S9? 480246 A7-_____ _____ B7 V. Description of the invention (Example 4 An aqueous solution (Kymene®, Hercules Inc., Wilmington Delaware) containing 0.4% by weight of α-epoxychloropropene functional polyamines was prepared by the method described in Example 1. Pour 25 ml of the diluted solution of Kymene® On a 90 mm diameter microfiber glass fiber (LB-5211-A-0, from Hollingsworth &amp; Vose Company, East

Walpole, Massachusetts, which contains 3-7% propane resin conjugate and 0.5 osy or 17 gsm Reemay support linen). The funnel was placed in a filter flask. The glass flask was emptied to attract the solution through the glass fibers for more than 20 seconds, thereby coating the fibers with the polymer. The filter was removed from the funnel and heated in an oven for one hour to cause the polymer on the glass filter fibers to crosslink. After taking out from the furnace, the filter was washed with 1,000 ml of steaming room and deionized water according to the procedure of coating fibers. This was then washed and the coated article was air-dried. A 2-inch leaf (5.1 cm) diameter filter disc was cut from a 90 mm disc-shaped male tailor. 'Place a single-layer filter disc in a 2-inch leaf (5.1 cm) diameter Nalgene and reuse it in a filter container, as shown in the example. 1 is shown. 100 ml of a weight% sodium gas solution was passed through the filter by gravity. After washing with a common salt solution, 200 mi ′ 0. 5 μm diameter polystyrene latex particles without a surfactant were used to test the filtration efficiency as described in Example 1. 100 ml of a 0.2% by weight sodium chloride solution was mixed with 100 ml of a particle solution of 2 × 108 particles / ml to prepare this 200 ml (containing 108 particles per ml) particle solution. The resulting solution was then passed through the filter by gravity. 99.9% or more of the particles were removed by passing the solution through a glass-coated filter having a basis weight of 2.2 osy (75 gsm). This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm). 13 Please read the note at the back

Meaning [% Rezero I · Replicate. Page I Order Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Employee Cooperatives Printed by YHW-PK-001-0S92 480246 A7 B7 V. Description of Invention (11) Example Repeats the procedure of Example 4, but The used microfiber glass filter was changed to LA-8141-0-A 'which was also obtained from Hollingsworth &amp; Vose Company, East Walpole, Massachusetts, and also contained 3-7¾ acrylic resin conjugate and 0.5 sy or 17 gsm Reemay supports sackcloth. As in Example 4, more than 99.9% of the particles were removed by filtering the solution through a glass-coated filter, and its basis weight was 2.5 osy (85 gsm). Although this specification has described the specific embodiments in detail, it will be valued by those skilled in the art and once you understand the foregoing, you can easily think about alternatives, changes and equivalents of these embodiments. . Therefore, the scope of the invention should be determined by the scope of the additional patent application and any equivalents thereof.

Please read the back note first, fill in 1 I install the page I Ding printed by the Intellectual Property Bureau of the Ministry of Economic Affairs employee consumer cooperatives The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 14 YHW-PK-001 -059?

Claims (1)

A8 C8 ^^^ ~ ___ A. Patent application scope j: r. Earn 丨 Contains:-A kind of broken glass with a cationic charge coating on it, this coating contains 2 blind energy positive ion ginseng compounds, which have been heated by Formation of cross-linking. The glass fiber described in Fan Hang, item 1 of the patent application, wherein the functional anion is "-epoxychloropropane functional polyamine. • The glass fiber according to item 2 of the scope of patent application, wherein the functional cation is α-epoxychloropropane functional polyamine. 4. A fiber filter comprising glass fibers with a cationic charge coating. This coating comprises: a blind energy cationic polymer that has been crosslinked by heating. 5. The fiber filter according to item 4 of the scope of the patent application, wherein the functional cation is an α-epoxychloropropane functional polyamine. 6. The fiber filter according to item 5 of the patent application park, wherein the functional cation is an α-epoxypropane functional polyamine. A method for preparing Chengwei filter material 'This method comprises: providing a fiber filter material containing glass fiber; printed by a consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, a functional cationic polymer which has been crosslinked by heating in a sufficient amount Passing the fibers with the functional cationic polymer completely covering the fibers; and heating the coated fiber filter produced at a temperature for a sufficient time to cause the functional cationic polymers on the glass fibers to crosslink. 8. The method according to item 7 of the patent application park, wherein the functional cation is an α-epoxypropane functional polyamine. 9. The method according to item 8 of the scope of the patent application, wherein the functional cation is an alpha epichlorohydrin functional polyaminoamine. This paper size applies to China-China National Standard (CNS) A4—Specifications (210 X 297 male «) &quot;-15 VHW-P / C-〇〇 / _〇592