DE4239520A1 - High-performance filter with high thermal and chemical stability - has adsorber particles bonded to a three-dimensional porous support coated with a thermally stable, hydrolysis-resistant plastic - Google Patents

High-performance filter with high thermal and chemical stability - has adsorber particles bonded to a three-dimensional porous support coated with a thermally stable, hydrolysis-resistant plastic

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Publication number
DE4239520A1
DE4239520A1 DE4239520A DE4239520A DE4239520A1 DE 4239520 A1 DE4239520 A1 DE 4239520A1 DE 4239520 A DE4239520 A DE 4239520A DE 4239520 A DE4239520 A DE 4239520A DE 4239520 A1 DE4239520 A1 DE 4239520A1
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performance filter
hydrolysis
pur
filter according
sayings
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Hasso Von Bluecher
Ernest De Dr Ruiter
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
    • 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
    • B01D39/1669—Cellular material
    • B01D39/1676—Cellular material of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28011—Other properties, e.g. density, crush strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28042—Shaped bodies; Monolithic structures
    • B01J20/28045—Honeycomb or cellular structures; Solid foams or sponges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28095—Shape or type of pores, voids, channels, ducts
    • B01J20/28097—Shape or type of pores, voids, channels, ducts being coated, filled or plugged with specific compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/36—After-treatment
    • C08J9/365—Coating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/36—After-treatment
    • C08J9/40—Impregnation
    • C08J9/42—Impregnation with macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/26—Porous or cellular plastics
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2421/00—Characterised by the use of unspecified rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2409/00—Presence of diene rubber
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2421/00—Presence of unspecified rubber
    • C09J2421/006—Presence of unspecified rubber in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/006—Presence of polyolefin in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2427/00—Presence of halogenated polymer
    • C09J2427/006—Presence of halogenated polymer in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2433/00—Presence of (meth)acrylic polymer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2475/00—Presence of polyurethane
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2475/00—Presence of polyurethane
    • C09J2475/006—Presence of polyurethane in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2483/00—Presence of polysiloxane

Abstract

A high-performance filter is claimed, consisting of a 3-dimensional supporting structure (A) to which adsorber particles (B) are attached by means of a bonding agent (C). (A) is coated with a thermally-stable plastic (I) which is very resistant to hydrolysis, in amts. of 20-500% w.r.t. (A). Pref. (A) is reticulated PUR foam with large pores, coated with a silicone resin, esp. silicone rubber, or sintered polypropylene (PP), hydrolysis resistant PUR, crosslinked acrylic resin, synthetic rubber or fluorinated or partly fluorinated plastic, or a combination of such materials with complementary properties. (C) is an adhesive with good chemical and thermal stability which is also resistant to hydrolysis, esp. PUR, acrylate copolymer, acrylate, or a latex based on neoprene, chloroprene, butyl rubber, synthetic rubber or silicone. USE/ADVANTAGE - The invention provides a high-performance filter which combines the advantages of a polyurethane (PUR) foam support (good porosity (i.e. high air permeability), and flexibility) with high thermal stability and resistance to hydrolysis (contrast uncoated PUR which is unable to withstand desorption by heating to above 150 deg.C or by treatment with superheated steam). In an example, reticulated PUR-polyurea foam with 15 pores/inch and bulk density 30g/l was impregnated and squeezed out with a mixt. of 1000 pts. wt. Impranil HS 62 (RTM) and 62 pts. wt. Imprafix HSC (RTM) (squeezing effect 120%), and dried at 160 deg.C to give a crosslinked, very hydrolysis-resistant coating which improved the response of the foam to external conditions. The same material was used as bonding agent for the adsorber (active carbon). The finished filter mat had density, 295g/l, comprising 30 g/l original foam, 65g/l PUR coating and adhesive, and 200g/l adsorber. The service life of the mat was increased by 40-60% for desorption by superheated steam; for nitrogen desorption the temp. could be increased to 160-165 deg.C.

Description

In der DE 38 13 563 A1 werden Adsorptionsfilter mit hoher Luftdurchlässigkeit beschrieben, deren grundsätzliches Merkmal darin besteht, daß an einer hochluftdurchlässigen, dreidimensionalen Trägerstruktur mittels einer Kleber­ masse Adsorberteilchen zum Haften gebracht sind, so daß der für den Schütt­ filter notwendige Kompromiß bezüglich der Teilchengröße - eine gute Kinetik verlangt kleine Teilchen, eine gute Luftdurchlässigkeit große Teilchen - ver­ mieden wird.DE 38 13 563 A1 describes adsorption filters with high air permeability described, the basic feature of which is that at a highly air-permeable, three-dimensional carrier structure using an adhesive mass adsorber particles are brought to adhere, so that for the bulk filter necessary compromise on particle size - good kinetics requires small particles, good air permeability large particles - ver is avoided.

Eine bevorzugte Ausführung ist ein großmaschiger, retikulierter PUR-Schaum in Form einer Matte, der mit Kleber beaufschlagt, und nach Abquetschen des Kleberüberschusses mit Adsorberteilchen bestreut wird. Die Weichheit und Elastizität des Trägers sind entscheidende Eigenschaften. Sie ermöglichen das Abquetschen, erleichtern aber auch das Einsetzen der Filtermatten in Rahmen usw . . Schließlich sollten kleine Filterelemente selbsttragend sein.A preferred version is a large-mesh, reticulated PUR foam in the form of a mat, which is applied with adhesive, and after squeezing the Excess adhesive is sprinkled with adsorber particles. The softness and Elasticity of the wearer are crucial properties. they allow the squeezing, but also facilitate the insertion of the filter mats in Frame etc. . Finally, small filter elements should be self-supporting.

Derartige Hochleistungsfilter werden üblicherweise durch heiße Inertgase bzw. Luft bei Temperaturen bis zu 150°C regeneriert, wobei allerdings höher sie­ dende Substanzen aus feinporigen Absorbentien sich auf diese Art nur schwer entfernen lassen.Such high-performance filters are usually caused by hot inert gases or Air regenerates at temperatures up to 150 ° C, although higher it substances from fine-pored absorbents are difficult in this way have it removed.

Es gibt nun seit einiger Zeit poröse Polymere, manchmal auch als Molsiebe bezeichnet, die, im Gegensatz zu Aktivkohle, kaum Wasser aufnehmen und daher für die Heißdampfdesorption besonders geeignet sind, insbesondere, da eine Trocknung nach der Desorptionsphase nicht mehr nötig ist.Porous polymers have been around for some time now, sometimes as molecular sieves referred to, which, in contrast to activated carbon, hardly absorb water and are therefore particularly suitable for hot steam desorption, especially since drying after the desorption phase is no longer necessary.

Der beschriebene PUR-Trägerschaum hat nun weder eine ausreichende ther­ mische Stabilität, um Desorptionstemperaturen über 150°C hinaus zu gestat­ ten (was bei höher siedenden Substanzen wünschenswert wäre) noch hat er eine ausreichende Hydrolysebeständigkeit, um die Heißdampfdesorption an­ wenden zu können.The PUR carrier foam described now has neither sufficient ther Mix stability to allow desorption temperatures above 150 ° C he (which would be desirable for higher boiling substances) sufficient resistance to hydrolysis to enable hot steam desorption to be able to turn.

Es war Aufgabe der Erfindung, einen Träger zu schaffen, der in seinen Eigen­ schaften - Porosität, Weichheit - dem genannten PUR-Schaum entspricht, je­ doch eine höhere thermische Belastbarkeit und Hydrolysebeständigkeit auf­ weist. Kunststoffe, die die geforderten Eigenschaften besitzen, lassen sich nicht in der Art des Polyurethans schäumen, so daß die alleinige Verwendung anderer Polymere nicht zum Ziel führt.It was an object of the invention to provide a carrier that is in its own properties - porosity, softness - corresponds to the stated PUR foam, each but a higher thermal resilience and hydrolysis resistance points. Plastics that have the required properties can be do not foam in the type of polyurethane, so use it alone other polymers does not lead to the goal.

Die Lösung der gestellten Aufgabe besteht darin, daß der PUR-Schaum durch einen Kunststoff, der die geforderten thermischen bzw. chemischen Eigen­ schaften besitzt, in einer Menge von 20-500% ummantelt wird. Somit kombi­ niert man die hervorragende Struktur und Weichheit des PUR-Schaums mit den Eigenschaften der Ummantelung. Sofern nur eine erhöhte Hydrolysebe­ ständigkeit gefordert wird, leistet eine Beschichtung durch aufgesintertes Poly­ propylen gute Dienste, wobei allerdings die Haftmasse für die Adsorber sorg­ fältig ausgewählt sein muß. Ist neben der Hydrolysefestigkeit auch eine gute thermische Stabilität erwünscht, so bieten sich in erster Linie Siliconharze, ins­ besondere lösemittelfreie, thermisch vernetzbare Silicon-Gummi an. Es ist vor­ teilhaft, wenn die Ummantelung gleichzeitig der Kleber für die Adsorber ist. Neben den genannten Kunststoffen gibt es noch eine Vielzahl von Möglichkei­ ten, die dem Fachmann zur Verfügung stehen, und die je nach Bedarf einge­ setzt werden können. Dies besondere Hervorheben von Polypropylen und Sili­ con darf deshalb nicht als Einschränkung bewertet werden. Wesentlich ist das Prinzip der Ummantelung des PUR-Trägers durch ausgesuchte Kunststoffe, die die Eigenschaften des PUR verbessern. Dem Fachmann stehen hierfür lö­ semittelfreie bzw. lösemittelarme Präpolymere (PUR, Silicone . . .), die nach Auf­ tragen vernetzt werden, Lösungen und Dispersionen (Latices) aus Polymeren und Copolymeren usw., die auch teilweise fluoriert sein können, zur Verfü­ gung.The solution to the problem is that the PUR foam through a plastic that has the required thermal or chemical properties  sheathed, is coated in an amount of 20-500%. So combi the excellent structure and softness of the PUR foam the properties of the casing. If only an increased hydrolysis level durability is required, a coating is made by sintered poly propylene good service, although the adhesive mass provides for the adsorbers must be properly selected. In addition to the hydrolysis resistance, it is also a good one thermal stability is desired, so there are primarily silicone resins, ins special solvent-free, thermally cross-linkable silicone rubber. It is before partial if the sheathing is also the adhesive for the adsorbers. In addition to the plastics mentioned, there are a variety of options ten, which are available to the specialist, and which are adjusted as required can be set. This is particularly emphasizing polypropylene and sili con should therefore not be seen as a restriction. It is essential Principle of sheathing the PUR carrier with selected plastics, that improve the properties of the PUR. The specialist is available for this medium-free or low-solvent prepolymers (PUR, silicones...), which according to Auf wear cross-linked, solutions and dispersions (latices) of polymers and copolymers, etc., which may also be partially fluorinated supply.

Beispiel 1example 1

Ein retikulierter Polyurethan/Polyharnstoff-Schaum mit einer Porendichte von 15 ppi (Poren pro inch) und einem Raumgewicht von 30 g/l wurde mit einem Gemisch aus 1000 Teilen Impranil HS 62 und 62 Teilen Imprafix HSC, beides Produkte der Bayer AG, abgequetscht (Abquetscheffekt 120%) und bei 160°C getrocknet. Dabei vernetzt die Ummantelung zu einem sehr hydrolyse­ festen Polyurethan, welches das Verhalten des Schaums gegen äußere Ein­ flüsse verbessert. Zudem wird der Schaum wesentlich steifer und formstabiler. Als Haftmasse für die Adsorber wurde die gleiche Masse verwendet. Das Fer­ tigprodukt hatte ein Raumgewicht von 295 g pro Liter, wovon 30 g ursprüngli­ cher PUR-Schaum, 65 g Ummantelung und Haftmasse (PUR) und 200 g Ad­ sorber (Aktivkohle) waren. Die Lebensdauer der fertigen Filtermatte konnte bei Anwendung einer Heißdampf-Desorption um 40-60% erhöht werden. Bei der Stickstoff-Desorption konnte die Temperatur auf 160-165°C erhöht werden.A reticulated polyurethane / polyurea foam with a pore density of 15 ppi (pores per inch) and a density of 30 g / l was obtained with a Mixture of 1000 parts Impranil HS 62 and 62 parts Imprafix HSC, both Products from Bayer AG, squeezed (squeeze effect 120%) and at Dried 160 ° C. The jacket crosslinks to a very hydrolysis solid polyurethane, which is the behavior of the foam against external input rivers improved. In addition, the foam becomes much stiffer and more dimensionally stable. The same mass was used as the adhesive mass for the adsorbers. The Fer tig product had a density of 295 g per liter, of which 30 g originally cher PUR foam, 65 g coating and adhesive (PUR) and 200 g ad sorber (activated carbon). The lifespan of the finished filter mat could be Application of hot steam desorption can be increased by 40-60%. In the Nitrogen desorption, the temperature could be increased to 160-165 ° C.

Beispiel 2Example 2

Der gleiche PUR-Schaum wurde mit Elastosil LR 6250 F (Wacker Chemie) und Vernetzer W abgequetscht und bei 160°C vernetzt (5 min). Der Ab­ quetscheffekt betrug ca. 100%. Der so ummantelte Schaum wurde ein zwei­ tes Mal mit Elastosil abgequetscht, mit Adsorbern (Aktivkohlekügelchen mit ⌀ 0,5 mm) beladen und die Haftschicht vernetzt.The same PUR foam was made with Elastosil LR 6250 F (Wacker Chemie) and crosslinker W squeezed out and crosslinked at 160 ° C. (5 min). The Ab  crushing effect was approx. 100%. The foam covered in this way became a two squeezed out for the first time with Elastosil, with adsorbers (activated carbon beads with ⌀ 0.5 mm) and the adhesive layer cross-linked.

Die Gewichtsverteilung war wie folgt:
30 g/l PUR-Schaum, 60 g/l Silicon-Gummi und 200 g/l Adsorber (Aktivkohle). Das Produkt war extrem hydrolysefest und ertrug eine Dauerbelastung von 190°C. Allerdings machte sich eine starke Erweichung bemerkbar, so daß die Matte unterstützt werden mußte. Eine höhere Steifheit bzw. Fähigkeit, sich selbst zu tragen, kann erreicht werden, wenn man beispielsweise zuerst mit dem bereits im Beispiel 1 genannten Impranil HS 62 und Imprafix HSC um­ mantelt und anschließend den kräftig verstärkten Träger mit Silicon-Gummi überzieht.The weight distribution was as follows:
30 g / l PUR foam, 60 g / l silicone rubber and 200 g / l adsorber (activated carbon). The product was extremely resistant to hydrolysis and endured a continuous load of 190 ° C. However, a strong softening was noticeable, so that the mat had to be supported. A higher stiffness or ability to carry yourself can be achieved, for example, if you first coat with the Impranil HS 62 and Imprafix HSC already mentioned in Example 1 and then cover the strongly reinforced support with silicone rubber.

Beispiel 3Example 3

Der gleiche Schaum, wie in den vorhergehenden Beispielen, wurde mit einer PP-Dispersion (Morprime 78 L J 8 A der Fa. Morton International) beauf­ schlagt und das Polypropylen bei 185°C aufgesintert. Dann wurde weiter wie im Beispiel 1 verfahren, d. h. als Haftmasse wurde das sehr hydrolysebestän­ dige Polyurethan Impranil HS 62 eingesetzt. Die Hydrolysebeständigkeit der Filtermatte wurde durch die Ummantelung des Schaums um etwa 50% ver­ bessert.The same foam as in the previous examples was made with a PP dispersion (Morprime 78 L J 8 A from Morton International) strikes and the polypropylene sintered at 185 ° C. Then how continued proceed in Example 1, d. H. the adhesive was very hydrolysis resistant The polyurethane Impranil HS 62 used. The hydrolysis resistance of the The filter mat was ver by about 50% by covering the foam improves.

Beispiel 4Example 4

Schließlich wurde der PUR-Trägerschaum der Beispiele 1-3 mit einer selbst­ vernetzenden Acrylat-Dispersion (Plextol DV 475 der Fa. Röhm) überzogen und die gleiche Dispersion als Haftmasse verwendet. Die Hydrolysebeständig­ keit wurde erheblich verbessert, aber die Anfangshaftung der Adsorber war unbefriedigend.Finally, the PUR carrier foam of Examples 1-3 was self-made crosslinking acrylic dispersion (Plextol DV 475 from Röhm) coated and used the same dispersion as an adhesive. Resistant to hydrolysis speed was significantly improved, but the initial liability was the adsorber unsatisfactory.

Claims (10)

1. Hochleistungsfilter, bestehend aus einem dreidimensionalen Trägerge­ rüst, auf welchem mittels einer Haftmasse Adsorberteilchen fixiert sind, dadurch gekennzeichnet, daß das Trägergerüst durch einen thermisch stabilen und sehr hydrolysebeständigen Kunststoff ummantelt ist, der ca. 20 bis 500%, bezogen auf den Träger, beträgt.1. High-performance filter, consisting of a three-dimensional carrier frame on which adsorber particles are fixed by means of an adhesive, characterized in that the carrier frame is encased by a thermally stable and very hydrolysis-resistant plastic, which is approximately 20 to 500%, based on the carrier, is. 2. Hochleistungsfilter nach Anspruch 1, dadurch gekennzeichnet, daß das Trägergerüst ein großporiger, retikulierter PUR-Schaum ist.2. High-performance filter according to claim 1, characterized in that the Carrier structure is a large-pore, reticulated PUR foam. 3. Hochleistungsfilter nach einem oder mehreren der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß das Trägergerüst durch ein Sili­ conharz, insbesondere Silicon-Gummi, ummantelt ist.3. High performance filter according to one or more of the preceding An sayings, characterized in that the support structure by a Sili conharz, in particular silicone rubber, is coated. 4. Hochleistungsfilter nach einem oder mehreren der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß das Trägergerüst durch aufgesin­ tertes Polypropylen ummantelt ist.4. High performance filter according to one or more of the preceding An sayings, characterized in that the support structure by aufgesin tert polypropylene is coated. 5. Hochleistungsfilter nach einem oder mehreren der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß das Trägergerüst durch ein hy­ drolysefestes PUR ummantelt ist.5. High performance filter according to one or more of the preceding An sayings, characterized in that the support frame by a hy drolysis-resistant PUR is encased. 6. Hochleistungsfilter nach einem oder mehreren der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß das Trägergerüst durch ein ver­ netztes Acrylat ummantelt ist.6. High performance filter according to one or more of the preceding an sayings, characterized in that the support frame by a ver coated acrylic is covered. 7. Hochleistungsfilter nach einem oder mehreren der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß das Trägergerüst durch Synthe­ sekautschuk ummantelt ist.7. High performance filter according to one or more of the preceding An sayings, characterized in that the support structure by Synthe is covered with rubber. 8. Hochleistungsfilter nach einem oder mehreren der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß das Trägergerüst durch einen flu­ orierten bzw. teilfluorierten Kunststoff ummantelt ist. 8. High performance filter according to one or more of the preceding an sayings, characterized in that the support frame by a flu or coated or partially fluorinated plastic.   9. Hochleistungsfilter nach einem oder mehreren der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß das Trägergerüst durch mehr als einen Kunststoff ummantelt ist, deren Eigenschaften sich ergänzen.9. High performance filter according to one or more of the preceding an sayings, characterized in that the support structure by more than is encased in a plastic whose properties complement each other. 10. Hochleistungsfilter nach einem oder mehreren der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß die Haftmasse hydrolysefest und chemisch und thermisch beanspruchbar ist, und zur Gruppe der Polyure­ thane, kopolymere Acrylate, Acrylate, Latices auf Basis von Neoprene, Chloroprene, Butyl-Kautschuk, Synthese-Gummi und Silicone gehört.10. High performance filter according to one or more of the preceding An sayings, characterized in that the adhesive is hydrolysis resistant and is chemically and thermally stressable, and to the group of polyures thane, copolymeric acrylates, acrylates, latices based on neoprene, Chloroprene, butyl rubber, synthetic rubber and silicones are one of them.
DE4239520A 1992-11-25 1992-11-25 High-performance filter with high thermal and chemical stability - has adsorber particles bonded to a three-dimensional porous support coated with a thermally stable, hydrolysis-resistant plastic Withdrawn DE4239520A1 (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19544990A1 (en) * 1995-12-02 1997-06-05 Bluecher Hasso Von Cabin air filters with combined particle and adsorption filtration
DE19617753A1 (en) * 1996-05-03 1997-11-06 Bluecher Gmbh Filter material for air conditioners, vacuum cleaners etc.
DE19634114A1 (en) * 1996-08-23 1998-02-26 Bluecher Gmbh Clean room clothing preventing emission of harmful gas and particles from body of wearer
DE10035576A1 (en) * 2000-07-21 2002-01-31 Pore M Gmbh Stable grid structure made of plastic and process for its production
US6402819B1 (en) * 1997-06-27 2002-06-11 Mhb Filtration Gmbh & Co. Kg Fresh air filter
EP1402933A1 (en) * 2001-06-22 2004-03-31 Bridgestone Corporation Filter member
DE202008016507U1 (en) 2008-11-14 2009-12-31 BLüCHER GMBH Adsorptive shaped bodies
DE202008016506U1 (en) 2008-11-14 2009-12-31 BLüCHER GMBH Adsorptive structures
DE102008058249A1 (en) 2008-11-14 2010-05-20 BLüCHER GMBH Adsorptive structures and their use
DE202010009493U1 (en) 2010-02-15 2011-04-07 BLüCHER GMBH Agglomerates of adsorbent particles
US7954254B2 (en) * 2002-05-15 2011-06-07 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Method for drying a product using a regenerative adsorbent
DE202010009494U1 (en) 2010-02-15 2011-06-09 Blücher GmbH, 40699 Adsorptive structures with particle and / or aerosol filter function
DE202012003179U1 (en) 2011-09-30 2012-10-04 BLüCHER GMBH Sebst-bearing structures with adsorptive properties
DE202011109491U1 (en) 2011-11-24 2012-11-27 BLüCHER GMBH Fiber-reinforced composite moldings with adsorptive properties

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2024586A1 (en) * 1968-11-29 1970-08-28 Bayer Ag
DE1965358A1 (en) * 1968-12-30 1970-09-10 Tissmetal Lionel Dupont Non-woven filter material
US4296166A (en) * 1978-10-09 1981-10-20 Takeda Chemical Industries, Ltd. Air filter of polyurethane mesh containing carbon adsorbent
DE3522287A1 (en) * 1985-06-21 1987-01-02 Moc Danner Gmbh Open-pored body for filtering and/or catalytic treatment of gases or liquids and process for the production thereof
DE3719418C1 (en) * 1987-06-11 1988-07-21 Sandler Helmut Helsa Werke Process for the production of a filter material
DE3700245A1 (en) * 1987-01-07 1988-07-21 Basf Ag METHOD FOR PRODUCING LIGHT, FLAT-SHAPED MOLDED PARTS USING AQUEOUS DISPERSIONS OR EMULSIONS FROM ORGANIC COMPOUNDS HAVING NCO GROUPS, AND MOLDED PARTS MADE BY THE METHOD
DE3805570A1 (en) * 1987-02-24 1988-09-01 Aisin Seiki ACCUMULATOR EXHAUST PLUG FILTER AND METHOD FOR THE PRODUCTION THEREOF
DE3813563A1 (en) * 1988-04-22 1989-11-02 Hasso Von Bluecher Adsorption filter with high air permeability
DE3819002A1 (en) * 1988-06-03 1989-12-14 Hasso Von Bluecher Air filter for passenger cells
EP0448784A2 (en) * 1990-03-27 1991-10-02 Firma Carl Freudenberg Coating and impregnation system of open-cell-thermoformable substrates
EP0529872A1 (en) * 1991-08-21 1993-03-03 Dow Corning Limited Foam coated with silicone rubber

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2024586A1 (en) * 1968-11-29 1970-08-28 Bayer Ag
CH519002A (en) * 1968-11-29 1972-02-15 Bayer Ag Heterogeneous polymer mixture
DE1965358A1 (en) * 1968-12-30 1970-09-10 Tissmetal Lionel Dupont Non-woven filter material
US4296166A (en) * 1978-10-09 1981-10-20 Takeda Chemical Industries, Ltd. Air filter of polyurethane mesh containing carbon adsorbent
DE3522287A1 (en) * 1985-06-21 1987-01-02 Moc Danner Gmbh Open-pored body for filtering and/or catalytic treatment of gases or liquids and process for the production thereof
DE3700245A1 (en) * 1987-01-07 1988-07-21 Basf Ag METHOD FOR PRODUCING LIGHT, FLAT-SHAPED MOLDED PARTS USING AQUEOUS DISPERSIONS OR EMULSIONS FROM ORGANIC COMPOUNDS HAVING NCO GROUPS, AND MOLDED PARTS MADE BY THE METHOD
DE3805570A1 (en) * 1987-02-24 1988-09-01 Aisin Seiki ACCUMULATOR EXHAUST PLUG FILTER AND METHOD FOR THE PRODUCTION THEREOF
DE3719418C1 (en) * 1987-06-11 1988-07-21 Sandler Helmut Helsa Werke Process for the production of a filter material
DE3813563A1 (en) * 1988-04-22 1989-11-02 Hasso Von Bluecher Adsorption filter with high air permeability
DE3819002A1 (en) * 1988-06-03 1989-12-14 Hasso Von Bluecher Air filter for passenger cells
EP0448784A2 (en) * 1990-03-27 1991-10-02 Firma Carl Freudenberg Coating and impregnation system of open-cell-thermoformable substrates
EP0529872A1 (en) * 1991-08-21 1993-03-03 Dow Corning Limited Foam coated with silicone rubber

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
63-156837 A. C-542, Nov.10,1988,Vol.12,No.426 *
63-260937 A. C-569, Feb.16,1989,Vol.13,No. 69 *
Patents Abstracts of Japan: 62-193619 A. C-475, Feb.12,1988,Vol.12,No. 47 *

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19544990A1 (en) * 1995-12-02 1997-06-05 Bluecher Hasso Von Cabin air filters with combined particle and adsorption filtration
DE19617753A1 (en) * 1996-05-03 1997-11-06 Bluecher Gmbh Filter material for air conditioners, vacuum cleaners etc.
DE19634114A1 (en) * 1996-08-23 1998-02-26 Bluecher Gmbh Clean room clothing preventing emission of harmful gas and particles from body of wearer
US6402819B1 (en) * 1997-06-27 2002-06-11 Mhb Filtration Gmbh & Co. Kg Fresh air filter
DE10035576A1 (en) * 2000-07-21 2002-01-31 Pore M Gmbh Stable grid structure made of plastic and process for its production
EP1402933A4 (en) * 2001-06-22 2004-11-10 Bridgestone Corp Filter member
US7063733B2 (en) 2001-06-22 2006-06-20 Bridgestone Corporation Filter member
EP1402933A1 (en) * 2001-06-22 2004-03-31 Bridgestone Corporation Filter member
US7954254B2 (en) * 2002-05-15 2011-06-07 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Method for drying a product using a regenerative adsorbent
DE202008016507U1 (en) 2008-11-14 2009-12-31 BLüCHER GMBH Adsorptive shaped bodies
DE202008016506U1 (en) 2008-11-14 2009-12-31 BLüCHER GMBH Adsorptive structures
DE102008058249A1 (en) 2008-11-14 2010-05-20 BLüCHER GMBH Adsorptive structures and their use
DE102008058248A1 (en) 2008-11-14 2010-05-20 BLüCHER GMBH Adsorptive moldings and their use
DE202010009493U1 (en) 2010-02-15 2011-04-07 BLüCHER GMBH Agglomerates of adsorbent particles
DE202010009494U1 (en) 2010-02-15 2011-06-09 Blücher GmbH, 40699 Adsorptive structures with particle and / or aerosol filter function
WO2011098211A1 (en) 2010-02-15 2011-08-18 BLüCHER GMBH Adsorptive structures having a particle and/or aerosol filter function and method for producing such adsorptive structures
WO2011098210A1 (en) 2010-02-15 2011-08-18 BLüCHER GMBH Agglomerates of adsorber particles and methods for producing such adsorber particles
DE102010024990A1 (en) 2010-02-15 2011-08-18 Blücher GmbH, 40699 Adsorptive system, preferably based on agglomerate, useful in an adsorptive shaped body and a filter, comprises many adsorber particles exhibiting a first and a second particulate adsorption material and a binder support
DE102010024989A1 (en) 2010-02-15 2011-08-18 Blücher GmbH, 40699 Adsorptive structures with particle and / or aerosol filter function
DE202012003179U1 (en) 2011-09-30 2012-10-04 BLüCHER GMBH Sebst-bearing structures with adsorptive properties
WO2013045024A1 (en) 2011-09-30 2013-04-04 BLüCHER GMBH Self-supporting structures having adsorptive properties
DE102012006272A1 (en) 2011-09-30 2013-04-04 BLüCHER GMBH Self-supporting structures with adsorptive properties
DE202011109491U1 (en) 2011-11-24 2012-11-27 BLüCHER GMBH Fiber-reinforced composite moldings with adsorptive properties
DE102011122168A1 (en) 2011-11-24 2013-05-29 BLüCHER GMBH Fiber-reinforced composite molding with adsorptive properties
WO2013075768A1 (en) 2011-11-24 2013-05-30 BLüCHER GMBH Fibre-reinforced composite moulded body with adsorptive properties

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