Classifications

• • 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
  • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
  • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
• • 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
  • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
  • C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
  • C04B40/0641—Mechanical separation of ingredients, e.g. accelerator in breakable microcapsules
  • C04B40/065—Two or more component mortars
• • 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
  • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
  • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
  • C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
  • C04B41/48—Macromolecular compounds
  • C04B41/4853—Epoxides
• • 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
  • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
  • C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
  • C04B41/61—Coating or impregnation
  • C04B41/62—Coating or impregnation with organic materials
  • C04B41/63—Macromolecular compounds
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
  • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
  • C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
  • C08G59/50—Amines
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
• • 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
• • 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
• • 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
  • C04B2111/72—Repairing or restoring existing buildings or building materials

Definitions

• the present invention relates to a
• Two-component coating agent based on epoxy resin which is particularly suitable for cement-bound substrates.
• the main focus here is on increasing chemical resistance to aggressive gaseous or liquid media, but also improving crack-bridging properties
• this set of rules for coating systems that are to be used in bearings in which water-polluting liquids are stored requires, among other things, a static crack-bridging ability of at least 0.2 mm with the highest possible chemical resistance.
• the overall stability of the coatings is checked with special test liquids over a period of 42 days and under a pressure of 1 bar.
• the standardized test liquids represent certain groups of possible storage chemicals, such as inorganic lyes or acids, organic acids, esters, ketones, alcohols or aromatic hydrocarbons.
• the simplest coating system consists of a primer and an elasticized top layer; however, this system has only very limited durability.
• epoxy resin-based coating systems which as components are usually epoxy resins with a molecular weight of ⁇ 700 g / mol, such as bisphenol A and / or F, reactive thinner and polyamine-based
• the hardeners can be pre-added to a certain degree and include amines such as 3-aminomethyl-3,5,5-trimethylcyclohexylamine (IPDA), diaminodiphenylmethane (DDM), bis-paraaminocyclohexylmethane (PACM), 1,3-bis (aminomethyl) -cyclohexane (BAC) or triethylene tetramine (TETA).
• IPDA 3-aminomethyl-3,5,5-trimethylcyclohexylamine
• DDM diaminodiphenylmethane
• PAM bis-paraaminocyclohexylmethane
• BAC 1,3-bis (aminomethyl) -cyclohexane
• TETA triethylene tetramine
• cracks ⁇ 0.2 mm (type A) or cracks> 0.2 mm can be bridged if a large number of test groups (including solvents) are covered at the same time only a small number of test groups (without solvents) is covered (type B).
• the coating agents for elasticization are usually extenders (liquid
• test groups 3, 8, 10 to 12 and 14 are sufficient, have only a low resistance; Medium requirements are met by those who meet test groups 1, 2 and 9, and high standards by those who meet requirements of test groups 4 to 7 and 13.
• accelerators or highly reactive amines in particular the m-
• MXDA Xylylenediamine
• a two-component coating agent based on epoxy resin with a resin component A and a hardener component B which is characterized in that the resin component A from 15 to 80 wt .-%, based on component A, an epoxy resin and at least a further component, selected from a reactive diluent, a filler, other additives such as pigments, additives and extenders, and the hardener component B consists of 20 to 50% by weight, based on component B, of m-xylylenediamine and at least one further component, selected from an adducting resin, an extender and an accelerator, and that components A and B are present in a molar ratio of 1: 0.8 to 1.2.
• epoxy resins of the bisphenol A and / or F type are preferably used for the resin component A.
• the amount of epoxy resin can be 15 to 80% by weight, preferably 20 to 60% by weight.
• epoxy resin and m-xylylenediamine in addition to the main constituents essential to the invention, epoxy resin and m-xylylenediamine, further constituents can be present in alternating proportions in both components A and B of the coating composition according to the invention.
• reactive diluents are added to the coating compositions, as a result of which the viscosity in component A in particular can be adjusted and the overall chemical resistance of the coating composition can be regulated.
• the use of reactive diluents for the preparation of component B has a positive effect on the viscosity of the entire hardener component.
• Typical reactive diluents according to the invention are epoxy group-containing mono-, di- or polyfunctional ethers, preferably of the hexane diol, neopentyl diglycol and trimethylol propane triglycidyl ether type.
• component A contains a reactive diluent, its amount is preferably up to 30% by weight, for example 3 to 20% by weight.
• the present invention provides for component A to be included
• Enrich fillers which preferably come from the range of barium sulfate, quartz powder, quartz sand and silicon carbide or can be other non-reactive, suitable substances. Of course, these can also be used in all possible mixtures with one another to increase the volume. If fillers are used, they are preferably used in component A in an amount of up to 70% by weight, particularly preferably from 50 to 70% by weight.
• the resin component A may contain other additives such as pigments, additives and extenders, which further increase the possible uses of the coating agent.
• the so-called extenders are liquid fillers, e.g. in the form of an alcohol such as benzyl alcohol, or to assist in film formation.
• carbon fibers or fabrics are also regarded as additives which
• Coating agents must be added as so-called drains if, for example, flammable liquids of hazard class AI, A2 and B are stored.
• the total amount of additives of this type is preferably up to 20% by weight, for example 12 to 18% by weight if such additives are used.
• the essential presence of m-xylylenediamine as a hardener, of which component B contains up to 50% by weight, preferably 20 to 40% by weight, is decisive for the special and high-quality properties of the coating composition according to the invention.
• component B according to the present invention can also contain further secondary constituents.
• Adducting resins should preferably be mentioned here, for which epoxy-containing compounds are particularly suitable, which, like the reactive diluents, permit a certain pre-reaction. Bisphenol A and / or F in particular have proven to be favorable, but the known reactive diluents can also be used for this.
• the amine compounds in component B according to the invention can have an adduct degree of at most 35%. The degree of adduct is a measure of the pre-reaction between epoxy resin and hardener.
• the use of adducting resins in an amount of up to 40% by weight, e.g. 10 to 40% by weight is preferred.
• Component B can also contain liquid fillers in the form of extenders, for which, as in component A, benzyl alcohol is particularly suitable; Components A and B may also include xylene-formaldehyde condensation products and coumarone-indene resins in general, and diisopropylnaphthalene. If such extenders are used, they are preferably present in an amount of 20 to 50% by weight, particularly preferably 30 to 45% by weight.
• an accelerator can also be added to component B, preferably in the form of tertiary amines; 2,4,6-Trimethylaminomethylphenol in particular has proven to be suitable for this purpose.
• tertiary amines 2,4,6-Trimethylaminomethylphenol in particular has proven to be suitable for this purpose.
• the mechanical properties and the reactivity of the The total mass can be set within wide limits without restricting the excellent properties of the coating agent with regard to crack bridging and resistance.
• the amount added depends on the tertiary amine added, but according to the invention it should not exceed 10% by weight. Usable results are achieved, for example, with accelerator quantities of 2 to 6% by weight.
• component B can also contain up to 50% by weight, preferably up to 30% by weight and particularly preferably up to 15% by weight, based on the total amine content Amines included.
• the invention preferably takes into account 3-aminomethyl-3, 5, 5-trimethylcyclohexylamine, 1,3-bis (aminomethyl) cyclohexane, 2,5- or 2,6-bis (aminomethyl) bicyclo (2.2.1) heptane and 1,2-diaminocyclohexane and bis-paraaminocyclohexylmethane, triethylenetetramine and diaminodiphenylmethane or mixtures thereof.
• Components A and B in a molar ratio of 1: 1 have proven to be particularly favorable.
• Mineral additives with a grain size of up to 3.0 mm can also be added to the actual coating composition consisting of components A and B, the amount of which can make up to 15 times the total of components A + B .
• pre-dried quartz sand but also all other granular and non-reactive sand and gravel-shaped Supplements are possible in order to enlarge the inner surface of the coating agent and to improve the "interlocking" of the coating agent with the substrate.
• the present invention provides for the use of the claimed coating composition, in particular for surface finishing of poured asphalt and cement-based substrates that are mechanically and / or highly chemically resistant.
• the respective layer thickness can be up to 50 mm, but thicknesses between 2 and 4 mm are preferred.
• the available epoxy resin-based coating agents are also suitable for a system structure in accordance with Section 19 g of the German Water Resources Act, especially as a system component in accordance with the requirements of the LAU (storage-filling-handling) - and HBV (manufacture-treat-use) - Areas.
• cracks with widths of up to 2 mm can be bridged permanently and elastically without problems, since the desired static crack bridging ability can be variably adjusted by choosing the appropriate layer thickness or by adding additional coarse-grained aggregates. Bridging wider cracks is also possible due to the great variability of the coating agent according to the invention.
• coating compositions were chosen whose component A had the following standard composition:
• Component A % by weight
• Liquid epoxy resin 30.0 bisphenol A
• Component B contained the components listed in the table below. Components A and B were each mixed in a molar ratio of 1: 1 at temperatures of 20 ° C using conventional mixing devices such as dissolvers and laboratory stirrers and the coating agent according to the building and testing principles of the German Institute for Building Technology (“Regulations”) u. a. on the parameters static
• Examples 1 to 6 are comparative examples; Examples 7 to 9 with MXDA as the sole amine (hardener) component are examples according to the invention.
• PACM bis-paraaminocyclohexlmethane DCH 99 1,2 diaminocyclohexane TETA triethylene tetramine IPDA 3-aminomethyl-3,5,5-trimethylcyclohexylamine

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Ceramic Engineering (AREA)
• Organic Chemistry (AREA)
• Structural Engineering (AREA)
• Materials Engineering (AREA)
• Architecture (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Civil Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Analytical Chemistry (AREA)
• Paints Or Removers (AREA)
• Epoxy Resins (AREA)
• Aftertreatments Of Artificial And Natural Stones (AREA)
• Curing Cements, Concrete, And Artificial Stone (AREA)
• Sealing Material Composition (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

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Cited By (2)

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Citations (5)

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• 1997
  • 1997-06-20 DE DE19726263A patent/DE19726263C2/de not_active Expired - Fee Related
• 1998
  • 1998-06-18 EP EP98934971A patent/EP0991688B1/de not_active Expired - Lifetime
  • 1998-06-18 AT AT98934971T patent/ATE306509T1/de active
  • 1998-06-18 JP JP50375199A patent/JP2002504951A/ja not_active Ceased
  • 1998-06-18 ES ES98934971T patent/ES2247705T3/es not_active Expired - Lifetime
  • 1998-06-18 DE DE59813103T patent/DE59813103D1/de not_active Expired - Lifetime
  • 1998-06-18 WO PCT/EP1998/003684 patent/WO1998058981A1/de not_active Ceased
• 1999
  • 1999-12-17 US US09/466,058 patent/US6316529B1/en not_active Expired - Lifetime

Patent Citations (5)

Non-Patent Citations (2)

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