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EP1404267A2 - Matiere absorbante et son procede de production - Google Patents

Matiere absorbante et son procede de production

Info

Publication number
EP1404267A2
EP1404267A2 EP01992542A EP01992542A EP1404267A2 EP 1404267 A2 EP1404267 A2 EP 1404267A2 EP 01992542 A EP01992542 A EP 01992542A EP 01992542 A EP01992542 A EP 01992542A EP 1404267 A2 EP1404267 A2 EP 1404267A2
Authority
EP
European Patent Office
Prior art keywords
water
absoφtionsmaterials
component
components
volume
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01992542A
Other languages
German (de)
English (en)
Inventor
Klaus Röhm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1404267A2 publication Critical patent/EP1404267A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/76—Large containers for use underground
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/38—Foundations for large tanks, e.g. oil tanks
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
    • E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use

Definitions

  • the present invention relates to a method for producing microporous and macroporous absorption materials for water and aqueous solutions and body fluids, which consist of at least two components Q and B. Furthermore, the absorption materials, layers and molded parts produced by this process, and their applications, in particular in technical applications.
  • superabsorbers Absorbent materials absorbing aqueous liquids, in particular polymers, so-called superabsorbers, are known from numerous publications. Modified natural polymers and partially or completely synthetic polymers are used. The synthetic superabsorbers often consist of polymers based on (meth) acrylic acid, which are present in partially neutralized form as alkali salts and are no longer water-soluble, but are only water-swellable. These superabsorbent polymers, hereinafter only referred to as “SAP”, are generally mechanically comminuted, dried and ground after the polymerization. These polymers can be prepared using conventional production processes, as described, for example, by A.
  • SAP superabsorbent polymers
  • Typical areas of application are the use in hygiene articles such as baby diapers and incontinence articles, as soil improvers, as well as water and nutrient storage for plants, as sealing material in the cable industry and in civil engineering, as well as binders for escaping environmentally hazardous substances as well as for non-aqueous lipophilic substances.
  • SAP SAP-quality cable products
  • This sealing effect is also known under the term “gel blocking", in which only the surfaces of the absorber particles swell and the liquid does not penetrate into the inner regions and swollen absorber particles which are glued to one another build up a barrier layer for subsequent liquid
  • the desired effect is applied in the form of mostly very fine powders with a grain size of ⁇ 300 ⁇ m, typically ⁇ 100 ⁇ m, in order to obtain the greatest possible sealing effect and quantity efficiency for sealing relatively small volumes.
  • the SAP particles become layered sealing elements or placed between textile or cellulose backing layers to enable efficient and dust-free work design in cable production, as described, for example, in DE 19801680.
  • SAP systems consisting of textile-like structures are also used for the reasons mentioned above
  • Biodegradable raw materials are also used for SAP, such as guar, which adapt the properties for this application through further treatment steps, such as surface crosslinking, biocide and corrosion inhibitor treatment, and which also largely prevent biodegradability.
  • SAP Biodegradable raw materials
  • guar which adapt the properties for this application through further treatment steps, such as surface crosslinking, biocide and corrosion inhibitor treatment, and which also largely prevent biodegradability.
  • Another area of application in which the effect of gel blocking is specifically used is the permanent sealing of through openings in civil engineering, such as pipe breakthroughs and similar through openings through masonry.
  • SAP salivary protein
  • powdery products with a broad grain spectrum from 10 ⁇ m to 1000 ⁇ m, typically with a grain spectrum from 150 ⁇ m to 850 ⁇ m, are used for practical purposes. Fine particles ⁇ 150 ⁇ m are undesirable due to their dust behavior and inhalation-toxic properties.
  • the gel blocking of the polymers can be suppressed by methods of surface crosslinking.
  • a wide variety of processes and various surface crosslinking agents are used.
  • the prior art methods known for surface crosslinking are described, for example, in DE 10016041, which is hereby introduced as a reference and is therefore considered part of the disclosure.
  • a process for the aftertreatment of the above-mentioned polymers and the use of a solution of at least one trivalent cation to restore the gel permeability and reduce the dust abrasion is described. This also results in improved caking behavior and gel blocking Behavior in the end use, e.g. the manufacture of hygiene articles.
  • the clumping of absorber particles is based on the effect of the adhesion of the absorber particles to one another that was recognized early on. It has been found that this is particularly the case in humid environmental conditions such as occurs at higher air humidity and especially when using finer particles. Since the SAP used in the hygiene area consists of mixtures of different grain sizes, the fine particles in particular, which also arise during the production or further processing process, pose a problem.
  • DE69323297 which is hereby introduced as a reference and is therefore part of the disclosure, describes a method for producing an absorbent material from absorbent resin particles in the form of a film, which is formed by the mutual adhesion of the resin particles. especially for use with hygiene articles.
  • the final absorbent body is formed by further additives and crosslinking agents.
  • the examples listed in DE69323297 show that after contact of the resin particles with the amount of water specified there from 15% to 150%, lumps are formed at times, which are not judged to be advantageous.
  • EP0309187 which is hereby introduced as a reference and is therefore considered part of the disclosure, describes an SAP with improved action by inactivating the powdery SAP by adding water or salt solutions with a proportion of 20 to 80% by weight of the resultant Hydrates (100% by weight).
  • the hydrate can be introduced into hygiene articles by extrusion, sprinkling or spraying.
  • the maximum liquid absorption capacity of the SAP is influenced only insignificantly.
  • Other treatment materials such as those used for the area of hygiene articles are also listed here, such as ethylene glycol and glycerin.
  • the agglomerate formed after mixing SAP and water is sticky. A flake-shaped micro or macro structure with a void formation of the agglomerates mentioned is not described therein.
  • US5002986 which is hereby introduced as a reference and is therefore part of the disclosure, describes an absorption material which is produced using an intensive mixing unit and which forms agglomerates which consist of individual fine particles and a surface crosslinking agent present in aqueous solution.
  • the absorption medium has an absorption time of 20 seconds and less and a free absorption capacity> 30 ml / cm 3 .
  • the absorbent is cross-linked and agglomerated into larger particles under the action of an intensive mixer.
  • the base polymer particles come into contact with an aqueous solution of an ionic surface crosslinking agent which is present in an amount of 1-20% by weight and a concentration of the surface crosslinking agent of 0.05 to 10% by weight.
  • Water-soluble organic or inorganic mixtures can be used as surface crosslinking agents. It is advantageous to use aqueous solutions of ionic metal cations, an amino or imino cation with a valence of two.
  • the absorption material produced by the method described above is used in particular for hygiene products. Comparisons show that the finer the polymer particles, the better the absorption time of the particles cross-linked by this process. From this it is concluded that the moistened particles have a better absorption time due to their higher surface area.
  • EP0595803 which is hereby introduced as a reference and is therefore considered part of the disclosure, describes a macrostructured and porous absorption material which is interparticle interlinked and has a void volume of over 10 cm 3 when dry.
  • the crosslinking unit consists of several precursor particles (precursor particles) of a water-absorbing, hydrogel-forming polymer and a crosslinking agent with a proportion of 0.01 to 30 parts by weight for 100 parts by weight of the precursor particles, which causes a crosslinking with covalent bonding between the precursor particles. Due to the natural particle structure of the precursor particles, macrost- ⁇ j ---- turiated cavities are created between the precursor particles. These pores have cavities that communicate with one another, so that the macrostructure becomes liquid-permeable.
  • the precursor particles have a particle size of ⁇ 600 ⁇ m and primarily a particle size of ⁇ 300 ⁇ m.
  • the precursor particle can also contain fibers.
  • the precursor particles can be surface-crosslinked.
  • the precursor particles can have pores with cavities that communicate with one another by means of physical association (adhesion).
  • the crosslinking agent consists primarily of the group of ethylene glycol, glycerol, trimethylol propane, 1,2-propanediol, or 1,3-propanediol.
  • the aim of the invention is the production of absorbents for technical areas in particular, such as for flood protection and fire fighting water retention and similar applications, where on the one hand there is a larger volume of swelling agent for absorbing water or aqueous liquids and also the simultaneous at least largely complete Filling voids is required. A high effective absorption rate is also required due to the quantity-related costs.
  • Macrostructured absorbents are also used for this purpose Particularly suitable on the basis of SAP, as is already shown in US5002986 and EP0595803.
  • an additional increased sealing effect against water may be required, which has started immediately, or at least after a few seconds or minutes, in order to obtain a 100% sealing effect after some time, for example a few minutes.
  • Gel blocking is then required again. This usually also results in an increase in gel stiffness.
  • a targeted, time-shifted effect of the cavity filling and the sealing of two rooms is important here.
  • Biodegradability of the swelling agents used is usually in direct conflict with the long-term durability of the same swelling agents, even under normal environmental influences.
  • the invention has for its object to provide an absorbent which no longer has the disadvantages listed above.
  • the invention provides a production method which enables the use of standard absorption media as inexpensive preliminary products for further processing into macro-structured end products in three-dimensional form, the use of which is particularly in technical applications.
  • absorbents with rapid absorption of liquid such as, for example, the Favor Pac 210 product manufactured by Stockhausen, a cross-linked sodium polyacrylate.
  • These absorbents have a fast liquid absorption / swelling behavior, as well as a water hazard of WGK 1 and are used in particular for liquid absorption in packaging, also in contact with food, such as in chilled fish transport.
  • This product consists of grain sizes from 100 ⁇ m to 800 ⁇ m and has a retention, ie water absorption under pressure (at 80g cm 2 ) of 80 g / ml SAP.
  • cellulose-based absorption materials such as methyl cellulose, if appropriate in conjunction with synthetic resins, cellulose ether, if appropriate in conjunction with polyvinyl acetate, carboxylmethyl cellulose, if appropriate with hydrophobic properties, are also suitable.
  • a method for producing an absorption material for water and aqueous solutions and body fluids is shown below, which is characterized in that the absorption material consists of at least two components Q and B, namely a swelling agent (component Q) with 100 parts by weight of particles, and of component B in water with 2 to 250 parts by weight based on the 100 parts by weight of component Q.
  • component Q a swelling agent
  • the volume of debris and / or voids of at least 1 to 1000% by volume, preferably 5 to 500% by volume, particularly preferably 50 to 300% by volume, based on the sum of the Determine individual volumes of the components used which correspond to 100% by volume.
  • the increase in volume regardless of the point in time of its determination, remains approximately constant even after 24 hours. constant. In individual cases, the bulk volume can also increase or decrease significantly within these 24 hours.
  • the cavity structure creates cavities that communicate with one another so that the macrostructure is permeable to liquids, i.e. becomes permeable to liquid. This is also important for many technical applications.
  • EP0595803 does not provide any qualitative information about the increase in the pores or cavity structure compared to the state of the particulate absorption materials or in the comparison of different swelling agents.
  • the minimum volume of the described macrostructure in the unswollen (circumscribed dry volume) state which is used in particular as a layer, is at least 10 mm 3 and typically 500 mm 3 .
  • the capillary effect is also higher and thus the gel-blocking effect is less or less likely, in particular under pressure loads which reduce the void of a macrostructure more or less.
  • a cationic amino-epichlohydrin adduct is used as the surface crosslinking agent, and the density of the macrostructure is preferably 0.7 to 1.3 g / cm 3 and most preferably 0.9 to 1.0 g / cm 3 shown. From this, no significant expression of a cavity structure of the macrostructure can be seen in the sense of this invention, which can also be seen from corresponding photo recordings of this publication.
  • DE69323297 corresponding to EP0624618B1, which is hereby introduced as a reference and is therefore part of the disclosure, describes a layered absorption material with 15 to 150 parts by weight of water, which is formed by the adhesion of the individual particles to one another. Further surface networking is also shown. Information on the density of the layer is only included in general form with regard to the dimensions of the layer from 0.3 to 5 mm and the weight per unit area from 100 to 300 g / m 2 .
  • Grain distribution essentially ⁇ 100 ⁇ m and a high proportion of filler fen has a strong tendency to caking and is therefore largely unusable for the intended application.
  • the product must therefore be protected from normal indoor air humidity before use by means of a tightly sealed plastic cover and is classified as highly sensitive to moisture.
  • the water is transported via the textile hose or in particular via the capillary action of the fillers. A targeted cavity structure is not available.
  • the method according to the invention for the production of void-forming and flake-shaped micro- and macrostructures is possible in particular for the particles described in WO 00/60017, which are shown in powder form and are part of the disclosure.
  • component Q has already been surface-treated and, e.g. described in DE 10016041, preferably an aftertreatment to restore gel permeability after mechanical damage, in particular using a solution of at least one salt of an at least trivalent cation.
  • Mainly metal salts such as e.g. Aluminum sulfate used.
  • the agglomerates created during this aftertreatment are processed by targeted process conditions e.g. Mixing time reduced or avoided. There is a dependence on the water supply via the saline solution. A targeted formation of agglomerates in connection with a high-room structure is not described.
  • the properties of the metal salts as surface crosslinking agents for crosslinking the particles on their surface with one another were recognized very early on and were used later in various variations, such as, for example, in the already mentioned US5002986. Good properties in gel rigidity are to be mentioned as advantages of such a macrostnicture, especially after already followed by swelling with> 25 times or 50 times water absorption.
  • the microflakes can also deform to a sufficient extent to ensure overall dimensional stability of the macro structure.
  • microflakes from a certain amount of water or aqueous liquids e.g. of> 50% by weight of water
  • they react very elastically i.e. their original form after removal of the pressure load e.g. over a cover glass, again and thus represent the elastic gel state.
  • This elastic behavior can also be clearly seen in a similar form in the macro structure.
  • This elasticity can be demonstrated immediately after the components have been mixed and / or up to 24 hours thereafter, on the basis of the elastic behavior (EVL value) under load of at least 5N / dm 2 , preferably> 20N / dm 2 , particularly preferably> 30N / dm 2 relative to the comparable value without load and a 95% springback to the original state.
  • Component Q can furthermore consist of a combination of different swelling agents and one or more different swelling agents mentioned in list of substances AI and A2 in a mixture within a single flake forming a micro flake structure and / or within a mixture and / or compound of several different single flakes, which one Form macro flake structure.
  • a micro flake structure (a) and a macro flake structure (b) are shown photographically in FIG.
  • micro flake structures generally form the macro flake fracture due to mutual adhesion of the particles to one another and / or covalent and / or ionic bonding, which can represent its own, possibly considerable, part in the formation of the void volume under the micro flakes.
  • This can possibly be done by the additives, especially the binders, adhesives and surface crosslinking agents as well as fillers e.g. Fibers and antiagregation agents can be achieved.
  • the combination of different swelling agents, as well as grain size distributions can in particular also aim to use the different specific properties of the swelling agents and / or the grain size distributions as well as the particle shapes / contours specifically for the generation of storage areas and distribution areas within any macro structure. Furthermore, this can influence the time course of a swelling process with regard to the most complete liquid absorption possible, as well as the achievement of a sealing effect and its particularly targeted combination with one another.
  • cellulose-based absorption materials / anti-aggression agents / binders such as methyl cellulose, if necessary in conjunction with synthetic resins, cellulose ethers, if necessary in combination with polyvinyl acetate, carboxylmethyl cellulose, if appropriate with hydrophobic properties, are also used.
  • the method according to the invention is also characterized in that the macro flake structure is in any three-dimensional shape or layering and / or contour and / or distribution intensity of the micro flake structures and is used specifically for the generation of memory areas and distribution areas within any macro flake structure.
  • Production can be carried out in particular using the methods mentioned in the reference documents, such as casting, injection molding, extrusion, flocking, rolling.
  • the usual mixing devices but in particular a very simple mixing unit or a stirrer, preferably a horizontal mixer or a mortar mixer, can be used to mix the components of the absorption material.
  • the selection of the mixing tools of the mixer is adapted to the individual case. These are preferably used in a speed range from 200 to 1000 rpm.
  • Free-fall mixers or fluidized bed mixers are preferably used for proportions greater than 10% of components, particularly component Q, which have particle sizes of less than 100 ⁇ m, in particular less than 50 ⁇ m.
  • FIGS. 1 and 2 The basic process sequence for the production of micro and macro flakes as well as layers and molded parts thereof is shown in FIGS. 1 and 2.
  • Figure 3 gives an overview of the components used and created for the production of micro and macro flakes.
  • the process sequences described in FIGS. 6 and 7 for the production of micro and macro flakes were carried out on a pilot plant horizontal mixer / reactor with a maximum of 15 l. Reactor volume carried out.
  • the SAP Type A used corresponds to the Favor-Pac 230 product from Stockhausen.
  • the feed materials were added at appropriate times. So, by adding finely dispersed methylcellulose with the product Methylan TG can be used to produce free-flowing flakes from slightly sticky flakes.
  • the specified relative humidity of the flakes was in a range of approx. 46%. By adding this methyl cellulose, the gel blocking effect, which is superimposed for sealing purposes and delayed in time, is obtained during the swelling process.
  • the relative humidity was determined on the basis of a random sample by drying and weighing and determining the residual water content in the substrate using a drying scale from Sartorius
  • SAP powder Favor-Pac 230 of 25 g was placed in a 500 ml beaker, the total amount of water of 25 g was added and with a high-speed mixer at the highest possible stirring speed of 300 RPM of the Krups brand stirred for 15 seconds. The determination of the bulk volume was determined immediately afterwards. The measuring cylinder was then sealed with household foil with regard to the exclusion of air and the bulk volume was redetermined after 24 hours.
  • a first use is in securing the position of containers, such as tanks.
  • the absorption materials according to the invention are used to protect against buoyancy for above-ground and underground containers, the sealing, holding or weighting of heating oil tanks, gas tanks, chemical storage containers being achieved by attaching the absorption material inside and outside of tanks.
  • Another application is in securing the buoyancy of boats, for example to prevent a boat from sinking. In this application, too, the walls of the boats are simultaneously sealed by means of the absorption materials. Another application is the stabilization and positioning of ships and boats.
  • the absorption materials serve e.g. as a weight element or buoyancy element inside or outside a ship or boat with the aim of maintaining or changing or returning the center of gravity of a boat.
  • the return to the normal position after a boat capsizes may be mentioned as an example.
  • one or more floating or diving bodies in the form of one or more cantilevers can lead to a stabilization or calming of the position (less swaying).
  • Another use is a controlled lifting of boats in dry docks, whereby the position of the boats and / or their outer walls can be sealed at the same time.
  • Another use of the absorption materials according to the invention is the complete or partial sealing of two rooms or room sections.
  • the absorption materials can generally be used as a sealant. They can e.g. as molded parts already in an unswollen state against the body to be sealed or in a cavity enclosed by the body. The molded parts can form fit with the respective body. Alternatively, only after a period of time for the swelling process does the swollen swelling agent form a sealing layer.
  • the absorption materials can in particular be used as cable seals, these enclosing the cables to be sealed in an unswollen and / or swollen state.
  • the Absorbent materials in the form of intrinsically stable films or on carrier materials.
  • sealing elements can be formed from the absorption materials according to the invention and, if appropriate, additional envelopes or carrier materials. These sealing elements can be used for closing and sealing sewers, openings in pipelines and the like.
  • sealing by means of the absorption materials use is made of the fact that due to their viscous structure at the interfaces between the bodies and the absorption materials, strong frictional forces or even an adhesive effect is obtained, as a result of which an increased sealing effect is achieved in the area of the interface.
  • the sealing elements can consist entirely of homogeneously or heterogeneously structured absorption materials.
  • the sealing elements can be designed in particular in layer technology. Hydrophobic materials such as garden fleeces are used particularly advantageously as carrier materials.
  • the absorption materials, to which additives are optionally added, are fixed to the carrier material with binders and / or adhesives.
  • the binders and / or adhesives are neutral or hydrophobic and can e.g. be formed by aqueous or solvent-based adhesive adhesives, hot adhesives, foam adhesives, methyl cellulose or the like.
  • the sealing elements produced in layer technology can be used in unchanged form or in a further processed form for sealing windows, doors or the like.
  • the carrier material can preferably be wound up in different geometric shapes or. Pillow-like designs of such sealing elements are also possible.
  • the absorption materials can also be used as a component of devices for sealing a pipe.
  • the tube can, for example be formed by a drain pipe, which opens at the bottom of a basement in a building. In the event of a flood, water from the sewage system can be pushed through the pipe into the basement.
  • a support forming the wall element is fixed in the tube by means of a tensioning device in such a way that the support covers the central area of the tube at its installation position, but leaves the edge areas of the interior of the tube free.
  • the absorption materials are applied to the carrier in such a way that they swell on contact with rising water and seal the pipe at the installation site of the carrier, so that no water swells and seal the pipe at the installation site of the carrier, so that little or no water enters the basement penetrates.
  • Another embodiment provides a circumferential or full-surface sealing element with absorption materials attached to a plate element, which, by placing it on a sewer opening and adding any additional weight to the plate (e.g. buckets, sandbags, swollen absorption material, metal plates, stones), protects the sewage system against backflow in e.g. Heavy rainfall or flooding protects.
  • a plate element which, by placing it on a sewer opening and adding any additional weight to the plate (e.g. buckets, sandbags, swollen absorption material, metal plates, stones), protects the sewage system against backflow in e.g. Heavy rainfall or flooding protects.
  • the absorption materials can be used in the area of flood protection, these serving in particular for at least partially sealing barriers against flooding or even forming barriers against flooding.
  • barriers can be formed in particular from stacks of normal sandbags or the like and in particular as tandem flood bags in EP 0659653B1 and DE 29913813U1, or as endless bags e.g. be carried out on a roll.
  • the absorption materials can be at least partially swollen separately in a swelling process in order to also be able to use technical filling devices for sand filling.
  • swelling bodies which have absorption materials which are stored in coarse-pored envelopes are also particularly suitable.
  • the wrappings can be formed from jute sacks, nylon stockings or the like.
  • the unswollen or slightly swollen swelling agents come into contact with water, they swell, causing some of the absorption materials to escape through the pores and form a viscous layer surrounding the casing.
  • Multiple stacks of these swelling bodies, together with the viscous layers on top of each other, provide efficient protection against the ingress of flooding. These can also be used to seal and increase flood protection dikes / dams.
  • the absorption materials are used as flood protection systems for the sealing of buildings and building openings such as doors, windows, sewerage, and protection of facilities, such as Heating systems, air conditioning systems, control cabinets, electrical appliances, furniture, room furnishings. Protection of entire rooms by a large e.g. Air-balloon-like gas-filled or tent-like displacement bodies with absorption materials attached, e.g. in and / or on textiles or honeycomb structures is possible.
  • the wrapper e.g. Plastic bags
  • the wrapper be completely or largely liquid-tight, so that no or only an insignificant leakage of absorption materials or liquids is obtained.
  • absorption materials can be used in particular in dense casings to build up barriers / barriers in the event of extinguishing water when extinguishing fires.
  • absorption materials can be used to build barriers against oil spills on beaches.
  • Systems of this type can also be used in particular for sealing environmentally relevant systems.
  • condensation water escaping from systems can be collected with the absorption materials.
  • the absorption materials can be used in the field of cleaning technology, especially water and wastewater treatment.
  • water and wastewater treatment especially water and wastewater treatment.
  • buffering peak pollutant values and other wastewater parameters such as of temperature and pH.
  • Systems of this type can also be used to seal and or to prevent buoyancy of reservoirs with groundwater or drinking water.
  • Absorbent materials in flood retention basins and the like can also be used as water reservoirs for retaining rain and flood water.
  • the absorption materials can advantageously be used in rescue systems, in particular water rescue systems.
  • the absorption materials can advantageously be used in rescue systems, in particular water rescue systems.
  • the absorption materials can advantageously be used in rescue systems, in particular water rescue systems.
  • Absorbent materials can be part of lifebuoys or the like.
  • a rescue system is a diving rescue system.
  • a mixture consisting of a gas generator such as sodium carbonate and absorption material is contained in the interior of a diving suit or an additional, possibly external, elastic cavity, for example a balloon.
  • the diver can flood his diving suit or the additional cavity under water so that the water comes into contact with the mixture.
  • the absorbent material swells.
  • the sodium carbonate then coming into contact with water releases CO 2 gas, especially in small bubbles within the absorption material. This creates buoyancy forces that lead the diver to the water surface.
  • the same principle can be used as an additional safety measure for swim rings or swim wings for children.
  • the small application amount of the mixture for example 1/100 of the final volume, is particularly advantageous.
  • a first example of this is a gel hydraulic component, such as a gel hydraulic cylinder.
  • the absorption material is stored inside the gel hydraulic cylinder. Depending on whether water is supplied or withdrawn from the absorption material, the volume of the absorption material increases or decreases, whereby the lifting movement is carried out.
  • AQUASTOPP Another embodiment against water damage in washing machines or dishwashers due to defective connection hoses is the well-known AQUASTOPP, which is usually triggered electromechanically.
  • the interruption of the further water flow leading to water damage is caused by a leak, by means of an absorption material, for. B. in the form of a gel hydraulic cylinder triggered closing of the inlet valve and / or sealing the leakage point.
  • the absorption materials can be used to fix components.
  • the absorption materials can be used as fillers for walls and wall elements made in sandwich construction.
  • the absorption materials also have a noise-preventing effect, so that such walls can also be used as noise barriers in or on buildings.
  • absorption materials used in this way can also serve as cold or heat storage for building air conditioning.
  • the absorption materials can also form components of components which serve to absorb radiation. This means that it can be used as a heat carrier / storage in solar hot water or air collectors.
  • the absorption materials can be used as components of components to increase their conductivity or to shield them against electrostatic charges. serve or electromagnetic fields.
  • such components can be formed from carpets and wallpapers and other textile-like substances. These can also contain other substances, in particular conductive substances such as metals such as gold, silver, aluminum, copper, in particular rough copper.
  • the absorption materials in the form of bulk material, molded bodies or flat structures can be used as packaging parts forming filling materials.
  • packaging parts can advantageously absorb liquids which penetrate from the outside or come from bottles, containers or damaged foods stored in the packaging, or from foods such as chilled meat and the like.
  • the absorption materials can also be used to manufacture components that are used to protect facilities against severe weather.
  • the components can be designed in the form of mats containing absorption materials.
  • the mats can be used as waterproofing for roofs on buildings.
  • the mats are preferably rolled up on devices provided for this purpose. In the event of a storm, the mats are rolled out and cover the roof tiles.
  • the swelling agents swell, bond to the roof tiles and protect them against detachment from the roof even in strong storms. This also prevents or reduces the lifting of roof tiles from the roof system, which provides protection against rainwater that otherwise penetrates into the building.
  • Such mats can also be used to protect glass parts against hail, particularly in motor vehicles or conservatories or roof windows.
  • the absorption materials continue to be used in facilities as secondary and / or buoyancy protection, in particular for use in LAU Plants (storage, filling, handling) and HBV plants (manufacture, treatment, use), or when dealing with water-polluting substances as well as with food and beverages.
  • the absorption materials according to the invention are suitable as components of hygiene articles, e.g. Diapers, pads for those in need of care (incontinence articles) and tampons.
  • the absorption materials are designed in particular in the form of layers or molded parts.
  • the absorption materials are also suitable for municipal and industrial wastewater treatment, e.g. as a pH value buffer, pollutant buffer in the event of damage, or for units working on the ion exchange principle
  • the absorption materials are also suitable as buffering agents for buffering and the slow or targeted release of active ingredients such as attractants, odorants, biocides, pesticides such as e.g. Pesticides for pests, snails.
  • absorption materials Another use of the absorption materials is the use as an odor absorption agent in technical and natural exhaust air systems for odor reduction e.g. in recycling plants (composting plants), in food processing, in breweries, kitchens, slaughterhouses or in butchers.
  • the absorption materials are suitable as air, water and waste water pollutant absorption agents or filters for analysis and binding of pollutants, in particular for wood preservatives.
  • the absorption materials can also be used in chemical toilets to absorb human and animal faeces and to reduce their odor. Furthermore, the absorption materials are used as packaging or inlays for absorbing liquids / vapors and odors, especially of food, plants, animals and with the possibility of being used simultaneously as temperature storage (energy storage) for cooling or keeping warm, for example, like in cooled fish transport on an airplane.
  • temperature storage energy storage
  • the absorption materials are use as a water, nutrient and active ingredient storage for plants, possibly with targeted release of active ingredient, in particular in and / or on synthetic fiber textiles, natural materials and textiles in the form of fabrics, nonwovens, or fiber bundles such as e.g. Jute, coconut, hemp, sisal, cotton, animal hair, wool, cardboard, cellulose, cellulose, reeds.
  • the absorption materials form pillows in particular as water reservoirs for window boxes and office plants.
  • the absorption materials are components of source elements, e.g. Can be used in tablet or pot form for the germination and rearing of plants, especially young plants.
  • the absorption materials form molded parts of any shape and size, which are covered with any seeds and / or vegetation and are used for room design or as gifts.
  • the absorption materials can also be used as scattering material or as a constituent thereof and serve as an animal base to absorb evaporation and faeces, in particular urine and odor reduction.
  • the absorption materials for water evaporation / humidification e.g. suitable for humidifying the room air, especially on heating elements / bodies.
  • the absorption materials also serve to absorb water for dehumidification of the room, for example to reduce, in particular, high room air humidity such as in damp rooms, bathing establishments or in tropical regions. Due to the flake-like structure of the absorption materials, they are also suitable for use as artificial snow. Here, these very elastic flakes can be used especially at plus temperatures. Due to the high cold / heat storage capacity, these can also be used well at minus temperatures. The coefficient of friction is significantly lower than that at plus temperatures. Additives, in particular also for snow consolidation according to the prior art, can be used here. Furthermore, buildings such as igloos, in particular, can be created from mechanically created molded parts made of absorption materials. These molded parts / cladding can also be attached directly to the building and, if necessary, removed after completion.
  • Biodegradable swelling agents / polymers and crosslinking monomer
  • BM poly (diallyldimemylammonium chloride)
  • CM sodium 2- (2-carboxylbenzoyloxy) ethyl methacrylate sodium
  • Vinyl-terminated-polymethysiloxane BM N- (2-ethoxyethyl) acrylamide
  • BM N-n-propylacrylamide
  • BM N- (Tefr - hydrofurfucyl) acrylamide
  • Methyacrylamidopropyltrimethylammonium chloride n-sutyl methacrylate poly (tetrafluoroethylene)
  • Vinyl-terminated polymethysiloxane BM N, N'-diethylacrylamide
  • Poly (oxytetramethylene dimethacrylate) BM poly (2-hydroxyethyl methacrylate)
  • BM acrylic acid, partially neutralized acrylic acid (neutralizing agent KOH or NaOH)
  • CM Methac-7l --- midopropyllrimethyl - ammonium chloride
  • BM poly-4,6-detadiene-1.10-diol-bis (n-butoxycarbonylmethyl urethane)
  • BM poly-bis (aminoethoxy) ethoxyphosphazene
  • BM poly bis (methoxyethoxy) ethoxyphosphazene
  • BM poly (ethylene-dimethylsiloxane-ethylene oxide)
  • BM polymethacrylic acid
  • BM polyvinyl methyl ether
  • CM M-deinimide modified poly (n-acetylethyleneimine)
  • Substance list C2 binder / adhesive / surface crosslinking agent
  • Cation of a polyvalent metal salt with a valence of 2 or 3 as they e.g. can occur as sulfates, acetates, chlorides, nitrates, phosphates, hydroxides, isopropoxides, ethylates, tert-butoxides.
  • subsequent metals aluminum
  • Calcium e.g. as calcium chloride magnesium e.g. as magnesium sulfate strontium
  • Pasting components in starch (approx. 20% in starch), water-soluble, thixotropic, biodegradable. food contact.
  • Carboxymethyl cellulose also CMC or abbreviated as sodium salt NaCMC: Water-soluble polyelectrolyte from the general group of cellulose ethers can be flocculated with copper and aluminum salts, with copper presumably at the same time providing protection against microbial attack. Probably only partially biodegradable, but biocompatible.
  • Cellulose ethers for example low-etherified, still water-soluble methyl cellulose and hydroxypropyl cellulose with a degree of etherification of around 1.5 ... possibly in combination with polyvinyl acetate, e.g. like Methylan TG
  • Gal ⁇ ktomanane / guar cellulose-like polymers, readily water-soluble, organic. Degradable, common for thickening food, commercial form, for example locust bean gum or guar flour
  • Resin soaps for example, saponified rosin, as Na. and K-salt water-soluble, sticky, viscous solutions (water-insoluble as calcium salt, was previously used to glue the knots of fish nets to improve the sliding resistance).
  • Methyl cellulose possibly in combination with synthetic resin, e.g. like Methylan TT Instant
  • Gel waxes also based on medical white oil
  • Polyolefins Polyamides, polyesters, poly (meth) acrylates, poly (- nrth) acrynitriles,
  • Polyalkylene oxides polyvinyl chloride, polystyrene, polycarbonates, polyurethanes
  • Substance list C3 aggregation inhibitor
  • Water glass e.g. Sodium and potassium water glass carboxymethyl cellulose, possibly hydrophobic
  • Titanium oxide (20 - 300 nm)
  • Foamed silica e.g. type Cabosil EH-5 (8 nm)
  • Mineral substances e.g. Sand, clay, expanded clay, clay, perlite, pumice, concrete, incineration ash, glass particles such as Aerosil (glass spheres), glass fibers, barite, silica, spar, basalt, chalk, talc, lime, magnesium oxide, titanium oxide, dolomite, calcium carbonate, soot , Zinc white, plaster, kaolin, mica, diatomaceous earth
  • Vegetable substances e.g. Plant fibers made from coconut, hemp, flax, cotton, linen, cellulose
  • 2.Fleece / textiles / particles with high capillary action e.g. Holophile fibers (hollow fibers), Dunova textiles, microfibers, flax fibers, coconut fibers, hemp fibers, cotton fibers, wool fibers, paper, cardboard, wood fibers, cellulose, Lohfah cucumber (skeleton)
  • Holophile fibers high fibers
  • Dunova textiles microfibers, flax fibers, coconut fibers, hemp fibers, cotton fibers, wool fibers, paper, cardboard, wood fibers, cellulose, Lohfah cucumber (skeleton)
  • Rubber e.g. Tire rubber, fine rubber flour
  • Soft PV C eg as when using anti-slip mats "Black-Cat"

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

L'invention concerne un procédé pour la production d'une matière absorbante pour l'eau, des solutions aqueuses et des liquides organiques. La matière absorbante selon l'invention est composée d'au moins deux constituants Q et B, à savoir du constituant Q avec 100 parties en poids de particules et du constituant B avec 2 à 250 parties en poids d'eau. On obtient, par un mélange homogène des constituants, une matière absorbante en forme de floc formant des vides en raison de l'adhésion réciproque des particules entre elles ou d'une liaison covalente ou ionique. Immédiatement après le mélange, on observe une augmentation du volume apparent ou du volume des vides d'au moins 1 % en volume par rapport à la somme des volumes individuels des constituants utilisés, correspondant à 100 % en volume.
EP01992542A 2000-11-06 2001-11-06 Matiere absorbante et son procede de production Withdrawn EP1404267A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10054734 2000-11-06
DE10054734 2000-11-06
PCT/EP2001/012840 WO2002036053A2 (fr) 2000-11-06 2001-11-06 Matiere absorbante et son procede de production

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EP1404267A2 true EP1404267A2 (fr) 2004-04-07

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ITTV20040013U1 (it) * 2004-03-10 2004-06-10 Co Ri Sac Srl Metodo di confezionamento di sacco per utilizzo in caso di esondazione
AT504342B8 (de) * 2006-11-21 2008-09-15 Thomas K Stelzl Kugelförmiger hohler füllkörper zum ausfüllen von behältern
EP2397811B1 (fr) * 2007-01-19 2017-01-04 Environmental Defence Systems Limited Système de défense
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US10400105B2 (en) 2015-06-19 2019-09-03 The Research Foundation For The State University Of New York Extruded starch-lignin foams
CN107759022A (zh) * 2017-11-15 2018-03-06 武汉文科生态环境有限公司 一种含重金属的生活污水处理系统
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CN113213632B (zh) * 2021-06-15 2022-11-25 萍乡学院 一种纳米羟基磷灰石丝瓜络复合填料及其制备方法和应用
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WO2002036053A2 (fr) 2002-05-10
WO2002036053A3 (fr) 2004-01-08

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