SK107496A3 - Coating system for cement-grouted floors - Google Patents

Coating system for cement-grouted floors Download PDF

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Publication number
SK107496A3
SK107496A3 SK1074-96A SK107496A SK107496A3 SK 107496 A3 SK107496 A3 SK 107496A3 SK 107496 A SK107496 A SK 107496A SK 107496 A3 SK107496 A3 SK 107496A3
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Slovakia
Prior art keywords
cement
inorganic
layer
floors
organic
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SK1074-96A
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Slovak (sk)
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Dieter Stutz
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Heidelberger Baustofftech Gmbh
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
    • E01C7/14—Concrete paving
    • E01C7/147—Repairing concrete pavings, e.g. joining cracked road sections by dowels, applying a new concrete covering
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0285—Repairing or restoring flooring
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/60—Flooring materials
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Floor Finish (AREA)
  • Glass Compositions (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Paints Or Removers (AREA)
  • Road Paving Structures (AREA)

Abstract

A coating system for cement-grouted floors consists of an elastic floating layer that lies on the floor and is made of one or several inorganic binders, an organic cement-compatible polymer and optionally organic or inorganic fillers, and of a covering layer made of one or several inorganic binders and optionally cement-compatible polymers and inorganic aggregates.

Description

Oblasť technikyTechnical field

Vynález sa týka poterového systému pre cementom viazané podlahy, ktorým sa prekrývajú vady a rysky v povrchu a po ktorom môžu prechádzať hlavne vozidlá.The present invention relates to a screed system for cement-bonded floors, which overlap defects and lines in the surface and which can be passed mainly by vehicles.

Doterajší stav technikyBACKGROUND OF THE INVENTION

Z praxe sú známe poterové systémy, ktoré prekrývajú vady a rysky na povrchu betónového muriva alebo podláh viazaných cementom, ktoré jednak bránia tomu, aby sa vady nemohli ďalej šíriť, jednak zabezpečujú hladký a beztryskový povrch, čím sa bráni prenikaniu špiny, soli proti námrazám, rozpúšťadiel a nečistôt z ovzdušia. Povrch takých potiahnutých plôch má byt hlavne mechanicky dobre zaťažovaný a hlavne má umožňovať prejazd.In practice, screed systems are known which overlap defects and lines on the surface of concrete masonry or cement-bonded floors, which both prevent the defects from spreading further, and ensure a smooth and jet-free surface, preventing the penetration of dirt, anti-icing salts, solvents and air pollutants. In particular, the surface of such coated surfaces should be mechanically well loaded and, in particular, should allow passage.

V prípade známych poterových systémov sa spravidla na betónový podklad nanáša základ z organických spojív, poprípade ž plastu a z prísad kompatabilných s cementom, poprípade nasleduje ešte vyrovnávanie nerovností. Na tento základ sa potom nanáša vrstva plastu, do ktorej sa ako prídavok môže vnášať pevnosť zvyšujúca tkanina alebo rúno zo sklenených alebo zo syntetických vlákien. Na túto vrstvu plastu sa potom nanáša ešte krycia vrstva z chemicky a mechanicky stáleho materiálu s vysokým modulom pružnosti, spravidla 3000 až 10000 n/mn/ . Táto krycia vrstva pozostáva spravidla z organického spojiva a anorganického plnidla, ktoré podmieňuje tvrdosť.In the case of known screed systems, a base of organic binders, possibly of plastic and of cement-compatible additives is usually applied to the concrete substrate, or even unevenness is followed. A layer of plastic is then applied to the base to which a strength-enhancing fabric or web of glass or synthetic fibers can be added as an addition. A covering layer of chemically and mechanically stable material with a high modulus of elasticity, typically 3000 to 10,000 n / mn, is then applied to this plastic layer. This coating generally consists of an organic binder and an inorganic filler which determines the hardness.

Ako organické spojivá sa s výhodou používajú dvojzložkové reaktívne plasty (napríklad EP, EP-PU, PU, PMH, spontánne vulkanizujúci kaučuk a polyester). Ako plnidlá pre kryciu vrstvu sa používa kremenný piesok alebo korund s vhodnou veľkosťou zŕn, čím sa dosahuje tvrdosť a nekízavosť krycej vrstvy (európsky patentový spis č. EP 0475000 - Al, britský patentový spis č. GB 045409 A, švajčiarsky patentový spis č. CH 659813 A5 a nemecký patentový spis č. DE 38 38 320 Al).Two-component reactive plastics (e.g. EP, EP-PU, PU, PMH, spontaneously vulcanizing rubber and polyester) are preferably used as organic binders. Quartz sand or corundum of suitable grain size is used as the filler for the coating, thereby achieving hardness and non-slipiness of the coating (European Patent Specification No. EP 0475000-A1, British Patent Specification No. GB 045409 A, Swiss Patent Specification No. CH No. 659813 A5 and German Patent Specification No. DE 38 38 320 A1).

Pretože plastové vrstvy prilínajú na povrch viazaného cementom pomerne zle, navrhuje sa zdrsňovat povrch kartáčovaním, prúdom piesku alebo navrtávaním a nanášať špeciálne prilínajúce základy (primery), čo tento postup zdražuje. Okrem toho sú pomerne drahé i vlastné povrstvovacie pre svoju malú mechanickú pevnosť pre pomerne hrubej vrstve. Zapracovanie zvýšenie zaťažiteľnosti je tiež priaznivé.Since the plastic layers adhere relatively poorly to the cement-bonded surface, it is proposed to roughen the surface by brushing, sanding or drilling and to apply special adhering bases, which makes the process more expensive. In addition, the coatings themselves are relatively expensive because of their low mechanical strength for the relatively thick layer. The incorporation of increased load capacity is also favorable.

Je preto úlohou vynálezu vyvinúť povrstvovací systém, ktorý by bol hodnotný, jednoducho nanesiteľný a predovšetkým dodával dostatočnú pevnosť, aby sa po ňom dalo prechádzať. Vynález túto úlohu rieši.It is therefore an object of the invention to provide a coating system that is valuable, easy to apply and, above all, provides sufficient strength to be passed through. The invention solves this problem.

systémy, pričom sa musia zakrytie rysiek nanášať v tkaniny alebo rúna nasystems whereby the liner cover must be applied to the fabric or fleece

Podstata vynálezuSUMMARY OF THE INVENTION

Poterový systém pre cementom viazané podlahy spočíva podľa vynálezu v tom, že obsahujeAccording to the invention, the screed system for cement-bonded floors consists of:

a) elastickú plávajúcu vrstvu položenú na podlahu z aspoň jedného anorganického spojiva a z polyméru kompatibilného s cementom a poprípade z organického alebo anorganického plnidla , b, krycia vrstva z aspoň jedného anorganického spojiva a poprípade z polyméru z polyméru kompatibilného s cementom ako aj tiež z anorganickej prísady.(a) an elastic floating layer laid on the floor of at least one inorganic binder and of a cement-compatible polymer and, optionally, of an organic or inorganic filler; b, a covering layer of at least one inorganic binder and optionally of a polymer of cement-compatible polymer and also an inorganic additive .

S prekvapením sa totiž zistilo, že pomerne tvrdá vrstva z prevažne anorganického spojiva, ako je napríklad cement a Efa-plnidlo, ktorá obsahuje len pomerne nepatrné množstvo organického polyméru, kompatibilného s cementom ako prídavné spojivo a poprípade anorganické alebo organické plnidlo, vykazuje i pri vysokom zaťažení dostatočnú pevnosť, neláme sa ani sa netrhá, tak že také vrstvy zakrývajú i trhlinky a nerozrušujú sa pri prechádzaní.It has surprisingly been found that a relatively hard layer of predominantly inorganic binder, such as cement and Efa-filler, which contains only a relatively small amount of a cement-compatible organic polymer as an additional binder and possibly an inorganic or organic filler, even at high sufficient strength, does not break or tear, so that such layers cover cracks and do not break when passing.

Vrstva označovaná ako základová alebo plávajúca, pozostáva spravidla hmotnostné z 5 až 50% anorganického spojiva, z 5 až 60% organického polyméru a z 0 až 80% plnidla. Ako anorganické spojivo sa tiež používa napríklad cement alebo Efa-plnidlá. Ako organické plnivo sa používa zvlášť vhodná vodná disperzia akrylátov. Ako plnivo sa môže používať piesok, drobné častice kameňa, strusková múčka, popolček a prípadne tiež jemne práškové organické materiály.The layer referred to as a primer or a float generally consists of 5 to 50% by weight of inorganic binder, 5 to 60% of organic polymer and 0 to 80% of filler. For example, cement or Efa-fillers are also used as inorganic binders. A particularly suitable aqueous dispersion of acrylates is used as the organic filler. As filler, sand, small stone particles, slag meal, fly ash and optionally finely powdered organic materials can be used.

Krycia vrstva je v podstate z rovnakých produktov ako vrstva základová, na zvýšenie pevnosti je však podiel anorganického spojiva zvýšený na hmotnostné 5 až 70% a podiel organických polymérov zodpovedajúcim spôsobom znížený na 3 až 50%. Okrem toho obsahuje ako plnidlo hmotnostné 10 až 70% tvrdého anorganického prášku, ako je napríklad kremenný piesok, korund a struková múčka. Aby bol povrch zvlášť tvrdý a odolný, posypáva sa dodatočne hrubozrnným plnidlovým materiálom, čím sa vedľa zvláštnej tvrdosti dosahuje tiež zvýšenej nekízavosti takýchto podláh.The cover layer is essentially of the same products as the base layer, but to increase the strength, the proportion of inorganic binder is increased to 5 to 70% by weight and the proportion of organic polymers correspondingly reduced to 3 to 50%. In addition, it contains 10 to 70% by weight of a hard inorganic powder, such as quartz sand, corundum and teat flour, as a filler. In order to make the surface particularly hard and durable, it is additionally sprinkled with coarse filler material, which in addition to the particular hardness also results in an increased non-slipiness of such floors.

Na nanášanie povlakového systému podľa vynálezu sa ošetrovaný povrch zbaví nečistôt, ako sú napríklad piesok, prach, zvyšky oleja a tukov a povlakov alebo drobivých kúskov, ako aj povlakov náterových hmôt rotujúcimi oceľo\/ými kartáčmi a podobnými spôsobmi. Potom sa podlaha zvlhčí, pričom je potreba zabrániť usadeniu cudzích častíc. V prípade veľmi suchých alebo silne savých podkladov je možné základovanie, ktoré zabraňuje odsávanie vlhkosti z plávajúcej vrstvy.To apply the coating system of the present invention, the surface to be treated is free of impurities such as sand, dust, oil and grease residues and coatings or friable pieces, as well as coatings by rotating steel brushes and the like. The floor is then moistened, avoiding the build-up of foreign particles. In the case of very dry or highly absorbent substrates, priming is possible to prevent moisture from being drawn from the floating layer.

Cement, polymérne dispenzie a prísady sa miešajú v potrebných podieloch a miešajú sa s vodou až do získania spracovateľnej hmoty, ktorá sa potom nastrieka na povrch podlahy, nanesie sa stierkou alebo natretím. Cement tvrdne pri nízkych teplotách pomaly a pri teplote 4 C prakticky netvrdne, takže pri spracovaní sa musí dodržať teplota aspoň 8 až 10 C, s výhodou teplota miestnosti. Pri mimoriadnych poveternostných podmienkach (silný prievan, priame žiarenie slnka) môže byť vhodné hotovú vrstvu až do vytvrdnutia zakryť fóliou, aby sa zabránilo predčasnému vyschnutiu alebo vymytiu vodou.The cement, polymer dispersions and additives are mixed in the necessary proportions and mixed with water until a workable mass is obtained, which is then sprayed onto the floor surface, applied with a spatula or brush. The cement hardens slowly at low temperatures and practically does not harden at 4 ° C, so that at least 8 to 10 ° C, preferably room temperature, must be maintained during processing. In extreme weather conditions (strong drafts, direct sunlight), it may be appropriate to cover the finished layer with a foil until it cures to prevent premature drying or washing with water.

Po vytvrdnutí plávajúcej vrstvy sa rovnakým spôsobom nanesie tiež krycia vrstva a poprípade sa ešte vo vlhkom stave posype zodpovedajúcim pieskom alebo korundom.After the floating layer has hardened, the covering layer is applied in the same way and, if necessary, still sprinkled with the corresponding sand or corundum while it is still wet.

Poterové systémy podľa vynálezu húževnaté, takže pri obvyklom namáhaní nich tiež prechádzať. Poprípade sa základovej tak tiež do krycej vrstvy na zosilnenie ešte vkladať tkaniny alebo rúna, pričom sa potom najprv obvyklým spôsobom nanáša len približne polovica hrúbky príslušnej vrstvy, položí sa tkanina alebo rúno a nanesie sa zvyšok povrstvovacej hmoty. Hmota sa spravidla pripravuje tak, aby bola do tej miery pastovitá, že preniká tkaninou alebo rúnom pri dosiahnutí pevného priľnutia celej upravovacej vrsty.The screed systems according to the invention are resilient, so that they can also pass under normal stress. Optionally, the fabric or nonwoven is also inserted into the base layer for reinforcement, whereupon only approximately half the thickness of the respective layer is first applied in the usual manner, the fabric or nonwoven is laid and the rest of the coating mass is applied. As a rule, the composition is prepared so that it is pasty to the point of penetrating the fabric or fleece while achieving a firm adhesion of the entire treatment layer.

sú tvrdé a dostatočne sú odolné a môže sa po prídavné môžu ako dothey are hard and sufficiently durable and can be after additional can as well

Priemyselná využiteľnosťIndustrial usability

Poterový systém na cementom viazané podlahy obsahujú na podlahe uloženú elastickú plávajúcu vrstvu položenú na podlahu z aspoň jedného anorganického spojiva a z polyméru kompatibilného s cementom a poprípade z organického alebo z anorganického plnidla a kryciu vrstvu z aspoň jedného anorganického spojiva a poprípade z polymérov kompatibilných s cementom ako tiež z anorganickej prísady.The screed system for cement-bound floors comprises an elastic floating floor layer laid on the floor of at least one inorganic binder and a polymer compatible with cement and optionally an organic or inorganic filler and a cover layer of at least one inorganic binder and optionally a polymer compatible with cement as also from an inorganic additive.

Claims (7)

PATENTOVÉPATENT NÁROKY 1. Poterový systém pre cementom viazané podlahy vyznačujúci sa tým, že obsahuje:1. A screed system for cement-bonded floors, comprising: a) elastickú plávajúcu vrstvu položenú na podlahu z aspoň jedného anorganického spojiva a z polyméru kompatibilného s cementom a poprípade z organického alebo anorganického plnidla,(a) an elastic floating layer laid on the floor of at least one inorganic binder and a cement-compatible polymer and, where appropriate, an organic or inorganic filler; b) krycia vrstvu z aspoň jedného anorganického spojiva a poprípade z polyméru kompatibilných s cementom ako aj z anorganickej prísady(b) a covering layer of at least one inorganic binder and, where appropriate, of a cement-compatible polymer as well as an inorganic additive 2. Poterový systém na cementom viazané podlahy podľa nároku 1, vyznačujúci sa tým, že obsahuje plávajúcu vrstvu s vloženou tkaninou alebo rúnom s organickým alebo anorganickým vlákenným materiálom.A screed system for cement-bonded floors according to claim 1, characterized in that it comprises a floating layer with an embedded fabric or web with an organic or inorganic fiber material. 3. Poterový systém na cementom viazané podlahy podľa nároku 1 aA screed system for cement-bound floors according to claim 1 a 2, vyznačujúci sa tým, že obsahuje medzi podlahou a plávajúcou vrstvou prídavnú základovú vrstvu.2, characterized in that it comprises an additional base layer between the floor and the floating layer. 4. Poterový systém na cementom viazané podlahy podľa nároku 1 ažA screed system for cement-bonded floors according to claim 1 to 3, vyznačujúci sa tým, že obsahuje kryciu vrstvu posypanú anorganickým materiálom.3, characterized in that it comprises a covering layer sprinkled with inorganic material. 5. Poterový systém na cementom viazané podlahy podľa nároku 1 ažA screed system for cement-bound floors according to claim 1 to 4, vyznačujúci sa tým, že obsahuje ako anorganické spojivo cement alebo Efa-plnidlo.4, characterized in that it contains cement or an Efa-filler as inorganic binder. 6. Poterový systém na cementom viazané podlahy podľa nároku 1 ažA screed system for cement-bonded floors according to claim 1 to 5, vyznačujúci sa tým, že obsahuje ako polymér vodnú disperziu akrylátov.5, characterized in that it contains an aqueous acrylate dispersion as polymer. 7. Poterový systém na cementom viazané podlahy podľa nároku 1 až 6,vyznačujúci sa tým, že plávajúca vrstva ma hrúbku 1 až 10, s výhodou 2 až 6 mm a krycia vrstva 3 až 20, s výhodou 5 až 10 mm.A cementitious screed screed system according to claim 1 to 6, characterized in that the floating layer has a thickness of 1 to 10, preferably 2 to 6 mm and a covering layer of 3 to 20, preferably 5 to 10 mm.
SK1074-96A 1994-08-23 1995-08-09 Coating system for cement-grouted floors SK107496A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4429785A DE4429785C1 (en) 1994-08-23 1994-08-23 Coating system for cement-bound floors
PCT/EP1995/003161 WO1996006249A1 (en) 1994-08-23 1995-08-09 Coating system for cement-grouted floors

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SK107496A3 true SK107496A3 (en) 1997-04-09

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EP (1) EP0777802B1 (en)
AT (1) ATE180533T1 (en)
CA (1) CA2184162A1 (en)
CZ (1) CZ289704B6 (en)
DE (2) DE4429785C1 (en)
DK (1) DK0777802T3 (en)
ES (1) ES2132702T3 (en)
GR (1) GR3030280T3 (en)
HU (1) HU220397B (en)
MX (1) MX9604441A (en)
PL (1) PL180119B1 (en)
SK (1) SK107496A3 (en)
WO (1) WO1996006249A1 (en)

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EP0777802A1 (en) 1997-06-11
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CZ289704B6 (en) 2002-03-13
DE59506046D1 (en) 1999-07-01
HU9602701D0 (en) 1996-11-28
DK0777802T3 (en) 1999-11-08
DE4429785C1 (en) 1996-01-25
PL180119B1 (en) 2000-12-29
HU220397B (en) 2002-01-28
GR3030280T3 (en) 1999-08-31
WO1996006249A1 (en) 1996-02-29
CA2184162A1 (en) 1996-02-29
ATE180533T1 (en) 1999-06-15
PL316206A1 (en) 1996-12-23
HUT77891A (en) 1998-09-28
EP0777802B1 (en) 1999-05-26

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