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
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
  • C09K3/00—Materials not provided for elsewhere
  • C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
• • 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
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  • 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
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  • 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
  • C04B41/488—Other macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
  • C04B41/4884—Polyurethanes; Polyisocyanates
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  • 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
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/08—Processes
  • C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
  • C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
  • C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
• • 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
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/08—Processes
  • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• • 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
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/08—Processes
  • C08G18/16—Catalysts
  • C08G18/22—Catalysts containing metal compounds
  • C08G18/227—Catalysts containing metal compounds of antimony, bismuth or arsenic
• • 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
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/08—Processes
  • C08G18/16—Catalysts
  • C08G18/22—Catalysts containing metal compounds
  • C08G18/24—Catalysts containing metal compounds of tin
• • 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
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/2805—Compounds having only one group containing active hydrogen
• • 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
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/2805—Compounds having only one group containing active hydrogen
  • C08G18/288—Compounds containing at least one heteroatom other than oxygen or nitrogen
  • C08G18/289—Compounds containing at least one heteroatom other than oxygen or nitrogen containing silicon
• • 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
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/30—Low-molecular-weight compounds
  • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
  • C08G18/3225—Polyamines
  • C08G18/3253—Polyamines being in latent form
  • C08G18/3256—Reaction products of polyamines with aldehydes or ketones
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  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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• • C—CHEMISTRY; METALLURGY
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  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
  • C08G18/72—Polyisocyanates or polyisothiocyanates
  • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
  • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
  • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
  • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
• • 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
  • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
• • 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
  • C04B2111/20—Resistance against chemical, physical or biological attack
  • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials

Definitions

• the present invention relates to waterproofing composi ⁇ tions based on polyurethanes , which are particularly useful for the waterproofing of concrete structures.
• Concrete structures especially those which are im ⁇ mersed in the ground are subjected to a number of destructive factors, such as water, frost, carbon dioxide, hygroscopic salts.
• concrete structures are usually protected by covering them with waterproofing membranes. Besides preventing water infiltration, waterproofing membranes prevent structural damage to building components.
• liquid waterproofing coatings are based on two- component polyurethane systems, comprising a polyol component and a polyisocyanate component, which upon reaction with each other form polyurethane polymers.
• typical polyurethane-based waterproofing mem ⁇ branes require the utilization of a primer, such as a primer based on an epoxy resin, unsaturated acrylic resin, polyure- thanes, etc.
• a primer such as a primer based on an epoxy resin, unsaturated acrylic resin, polyure- thanes, etc.
• the use of primers is expensive and time consuming, especially due to installation cost, surface prepa ⁇ ration and sanding.
• there is a desire to avoid the use of primers in liquid polyurethane-based waterproofing mem ⁇ branes while still maintaining an acceptable adhesion of the waterproofing membrane to the concrete structure, and while avoiding the formation of pinholes caused by the reaction of humidity with the isocyanate component.
• a waterproofing composi ⁇ tion including:
• A is selected from the group consisting of al ⁇ kyl, cycloalkyl, aryl and alkylaryl, each Rl group is independently selected from the group consisting of hy ⁇ drogen, alkyl and aryl, and each R2 group is independently selected the group consisting of alkyl and aryl, and n is 1, 2, or 3 ;
• R8 and R9 are individually selected from the group consisting of hydrogen and alkyl
• RIO is an alkylidene group, an arylidene group or an arylalky- lidene group optionally comprising at least two ure- thane groups or at least one carbonate diester group, and n is 1, 2, 3, or 4
• R5 (III) wherein R3, is an alkoxy group having 1 to about 8 car ⁇ bon atoms; and R4, R5, R6, are each independently se- lected from the group consisting of -(R7) n -Z, wherein Z is selected from the group consisting of amino, epoxy, mercapto, isocyanate, ureido, and imidazole, R7 is an aliphatic, alicyclic or aromatic group, and n is 0 to about 20; an alkoxy group having 1 to about 8 carbon atoms; an alkyl group having 1 to about 8 carbon atoms.
• the at least one branched isocyanate component Upon application of the components of the waterproofing composition to the concrete structure, the at least one branched isocyanate component will react with the hydroxyl groups of the at least one polyol component, thereby causing the system to cure.
• moisture entrained in or present at the surface of the concrete structure will first react with the at least one latent amine component, whereby the aldimino or ketimino groups present in the latent amine component are hy- drolyzed to produce amino compounds and aldehyde or ketones.
• alkyl or “alkylidene” gener ⁇ ally refers to saturated hydrocarbon radicals, preferably hav ⁇ ing from one to twenty carbon atoms, more preferably, from one to eight carbon atoms in a straight or branched chain configu ⁇ ration, including methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl and the like.
• alkyl includes Ci_galkyl, Ci_ 4 alkyl and the like.
• a Ci-salkyl radical may be optionally substituted where allowed by available valences.
• An "alky ⁇ lidene” group is distinguished from an “alkyl” group in that the former is divalent, whereas the latter is monovalent.
• alkoxy generally refers to saturated hydrocarbon radicals, preferably having from one to twenty, more preferably from one to eight carbon atoms, in a straight or branched chain configuration of the formula: -0-alkyl, including methoxy, ethoxy, n-propoxy, isopropoxy, n- butoxy, isobutoxy, sec-butoxy, tert-butoxy, n-pentoxy, n- hexoxy and the like.
• alkoxy includes Ci_salkoxy, Ci_ 4 alkoxy and the like.
• a Ci_salkoxy radical may be optionally substituted, where allowed, by available valences.
• aryl or “arylidene” gener ⁇ ally refers to a monocyclic, bicyclic or polycyclic aromatic carbon atom ring structure radical, including phenyl, naphthyl, anthracenyl, fluorenyl, azulenyl, phenanthrenyl and the like.
• An aryl radical may be optionally substituted where allowed by available valences.
• the aryl group con ⁇ tains 6 to 14, more preferably 6 to 10 carbon atoms.
• An "arylidene” group is distinguished from an “aryl” group in that the former is divalent, whereas the latter is monovalent.
• subst ituent means positional variables on the atoms of a core molecule that are substituted at a designated atom position, replacing one or more hydrogens on the designated atom, provided that the designated atom's normal valency is not exceeded, and that the substitution re ⁇ sults in a stable compound. Combinations of substituents and/or variables are permissible only if such combinations re ⁇ sult in stable compounds. It should also be noted that any carbon as well as heteroatom with valences that appear to be unsatisfied as described or shown herein is assumed to have a sufficient number of hydrogen atom(s) to satisfy the valences described or shown.
• the isocyanate component comprises on average at least 2.3, preferably at least 2.5, most preferably at least 2.8 isocyanate groups per molecule.
• the isocyanate component comprises on av ⁇ erage up to 100, more preferably up to 50, and even more pref ⁇ erably up to 10, such as up to 3.5 isocyanate groups per mole- cule.
• the isocyanate component is added in an amount such that the ratio of isocyanate groups to hydrogen donors (known in the polyurethane industry as the "index") is from 0.9 to 1.4.
• the isocyanate component may, for example, be the reaction product of a diisocyanate and a multifunctional alcohol.
• the diisocyanate is selected from the group consisting of 4-methyl-l , 3-phenylene diisocyanate, 2- methyl-1 , 3-phenylene diisocyanate, 4 , 4 ' -diphenylmethane diiso ⁇ cyanate, 2 , 4 ' -diphenylmethane diisocyanate, 1 , 3-phenylene diisocyanate, 1 , 4-phenylene diisocyanate, 1 , 6-hexamethylene diisocyanate, 2 , 2 , 4-trimethyl-l , 6-hexamethylene diisocyanate, 2 , 4 , 4-trimethyl-l , 6-hexamethylene diisocyanate, 1,12- dodecamethylene diisocyanate, cyclohexane-1 , 3-diisocyanate, cyclohexane-1 , 4-diisocyanate, l-isocyanato-3 , 3, 5-trimethyl-5- isocyanato-
• the multifunctional alcohol has two, three or four hydroxyl groups, and is more preferably selected from the group consisting of polyalkylene glycols, neopentyl gly ⁇ cols, glycerol, trimethylol propane, hexane triol, alkyd resin, and mixtures of the afore-mentioned multifunctional al ⁇ cohols.
• the ratio of diisocyanate to multifunctional alcohol depends on the number of hydroxyl groups present in the multi ⁇ functional alcohol. An excess of isocyanate groups in relation to alcohol groups should be appropriate to insure that the branched isocyanate component comprises on average at least 2.3, preferably at least 2.5, most preferably least 2.8 isocy ⁇ anate groups per molecule.
• the isocyanate component may be the reac ⁇ tion product of 2- (hydroxymethyl ) -2-ethylpropane-l , 3-diol and a commercial grade methylene diphenyl disocyanate (MDI), such as branded Desmodur ® LS2424 (available from Bayer AG) contain- ing approximately 55 wt . % 2 , 4 ' -diphenylmethane diisocyanate and 45 wt . % 4 , 4 ' -diphenylmethane didisocyanate.
• MDI methylene diphenyl disocyanate
• the isocyanate component is selected from oligomeric isocyanates having more than two isocyanate groups per molecule.
• n 1, 2, 3 or 4.
• the latter isocyanates are commercially available as polymeric MDI's (PMDI) .
• PMDI polymeric MDI's
• Examples of suit ⁇ able PMDI's or mixtures of MDI's and PMDI's are Desmodur ® VKS10 (available from Bayer AG) containing 4 , 4 ' -diphenyl-methane diisocyanate (MDI) in admixture with isomers and higher func ⁇ tional homologues (PMDI), and Desmodur ® E-21 (available from Bayer AG) containing aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate (functionality of 2.8, NCO 16%) .
• MDI 4 , 4 ' -diphenyl-methane diisocyanate
• PMDI Desmodur ® E-21
• the hy- droxyl groups of the polyol component may be attached to poly- ether, polyester or polybutadiene oligomers.
• the polyol comprises a combination of high and low molecular weight polyols, such as those comprising on average from about 2 to about 4 hydroxyl groups per molecule.
• the polyol component is a polyetherol or a polyesterol component.
• the polyol component is a polybu- tadiene-based polyol.
• the poly- etherpolyol or polyesterol component has a number average mo ⁇ lecular weight of from 300 to 6000.
• the polyether- polyol or polyesterol component comprises on average from about 2 to about 3 hydroxyl groups per molecule.
• Suitable polyol components are for example castor oil derived polyol such as Albodur ® Lv 43008 (available from Al- berdingk Boley) , polybutadiene backbone polyol such as Poly bd R 45HTLO (available from Cray Valley) , Desmophene ® 2060 Bd or a linear polypropylene polyether polyol such as Desmophene ® 1262 (both available from Bayer AG, Germany) .
• castor oil derived polyol such as Albodur ® Lv 43008 (available from Al- berdingk Boley)
• polybutadiene backbone polyol such as Poly bd R 45HTLO (available from Cray Valley)
• Desmophene ® 2060 Bd or a linear polypropylene polyether polyol such as Desmophene ® 1262 (both available from Bayer AG, Germany) .
• the amount of polyol component is selected such that it makes up about of 50-80% of the total equivalent of hydrogen donors in the total composition .
• A is selected from the group consisting of alkyl, cycloalkyl, aryl and alkylaryl, each Rl group is independently selected from the group consisting of hydrogen, alkyl and aryl, each R2 group is independently selected the group con ⁇ sisting of alkyl and aryl, and n is an integer from 1 to 3, is preferably the condensation product of a diamine, triamine, or tetraamine compound with aldehydes and/or ketones.
• the aldehyde is selected from the group consisting of aliphatic and cycloaliphatic al ⁇ dehydes.
• aldehydes examples include propanal, trimethylacetaldehyde, isobutyraldehyde, hexanal, 2- ethylhexanal , 2-methylbutanal , 2-ethylbutanal , octylaldehyde, valeraldehyde, isovaleraldehyde, 2-methylvaleraldehyde, 2,3- dimethylvaler-aldehyde, 2-methylundecanal , cyclohexylcarboxal- dehyde, methoxyacetaldehyde, 2-alkoxy-2-methylpropanals such as 2-methoxy-2-methylpropanal , 2-hydroxy-2-methylpropanal , es ⁇ ters of organic carboxylic acids and 2-hydroxy-2- methylpropanal , such as 2-acetoxyisobutyraldehyde, 3-alkoxy- 2 , 2-dimethylpropanals such as 3-n-butoxy-2 , 2-
• Suitable ketones includes acetone, methyl ethyl ketone, diethyl ketone, methyl propyl ketone, methyl isopropyl ketone, methyl isobutyl ketone, diisopropyl ketone, phenyl methyl ketone, methyl n-butyl ketone, methyl sec-butyl ketone, methamyl ketone, diphenyl ketone, pinacolone, methyl- hexanone, isobutylheptyl ketone, methylcyclohexanone, cyclopentanone, cycloheptanone, acetophenone, phenyl ethyl ke ⁇ tone, and 3 , 3 , 5-trimethylocyclohexanone .
• Suitable amines are compounds of formula (VI) :
• Suitable amines are, for example ethylene diamine, ethylene glycol diamine, propylene glycol diamine, and cycloaliphatic diamines.
• Suitable latent amine components are, for example, described in European Patent 0 531 249, the disclosure of which is incorporated herein by reference.
• latent amine component is Vestamin ® A139 (available from Evonik Industries, Germany) or a difunc- tional polyetheramine having oxyropylene units in the backbone and a molecular weight of about 2000 such as Jeffamine ® D2000 (available from Huntsman Corporation, U.S.A.).
• the amine is of a polyoxazolidyne type of Formula (II) .
• Such compounds can prepared by condensation of a N-hydroxyalkyl- ethanolamine, preferably diethanolamine, with a corresponding ketone or aldehyde, in a first step, according to the follow ⁇ ing reaction scheme:
• R8 and R9 are defined as previously, and Rll is an al- kylidene group, preferably having from 1 to 20 carbon atoms, more preferably from 1 to 5 carbon atoms.
• Suitable ketones and aldehydes are exemplified above with regard to the latent amine component of formula (I) .
• said condensation product containing oxa- zolidyne and hydroxyl groups, is reacted, in a second step with multifunctional compounds, which are able to react with hydroxyl groups to yield a compound of Formula (II) .
• multifunctional compounds are multifunctional alkyl isocy- anates, aryl isocyanates and alkylaryl isocyanates and their derivatives as described with regard to the isocyanate compo ⁇ nent.
• R8, R9 and Rll are defined as previously, and R13 is an alkyl group, an aryl group or an alkylaryl group.
• the oxazolidyne hydroxyl groups may be transesterified with carbonates of low molecular weight alco ⁇ hols to yield compounds of Formula (II) wherein RIO is an al ⁇ kylidene group comprising at least one carbonate group accord ⁇ ing to the following reaction scheme:
• R8, R9 and Rll are defined as previously, and R12 is an alkyl group, preferably having form 1 to 12 carbon atoms, more preferably from 1 to 6 carbon atoms, and most preferably from 1 to 2 carbon atoms.
• a preferred amine of Formula (II) is oxazolidineethanol , 2- ( 1-methylethyl ) -3 , 3 ' carbonate or the re ⁇ action product of hexamethylene diisocyanate diurethane with 2-isopropyl-3- (2-hydroxyethyl ) oxadolidine .
• the preferred latent amines of Formula (II) mentioned above are commercially available as Hardener VP LS 2959 and Hardener OZ (both available from Bayer, Germany) , Incozol ® LV and Incozol ® 4 (available from Incorez, Lancashire, UK)
• the amount of latent amine component is selected such that it makes up about 10-40% of the total equivalent of hydrogen do ⁇ nors in the total composition.
• the composition comprises a silane-based compound of formula (III)
• R5 (III) wherein R3, is an alkoxy group having 1 to about 8 carbon at ⁇ oms; and R4, R5, R6, are each independently selected from the group consisting of: -(R7) n -Z, wherein Z is selected from the group consisting of amino, epoxy, mercapto, isocyanate, ureido, and imidazole, R7 is an aliphatic, alicyclic or aro ⁇ matic group, and n is 0 to about 20; an alkoxy group having 1 to about 8 carbon atoms; an alkyl group having 1 to about 8 carbon atoms.
• the alkoxy groups R3, R4, R5 and/or R6 are selected from the group consisting of methoxy, ethoxy, pro- poxy, and methoxyethoxy .
• Preferred organosilanes are aminosi- lanes, epoxysilanes , mercaptosilanes , vinylsilanes , ureidosi- lanes, imidazolsilanes and isocyanatosilanes .
• Preferred si- lanes are selected from the group consisting of (3-amino- propyl ) trietoxysilane, 2 , 3-glycidoxypropyltrimethoxysilane and 3-mercaptopropyltri-methoxy-silane .
• a hydroxycarboxylic acid component may be used alternatively or, preferably, in addition to the silane-based adhesion promoter.
• the hydroxycarboxylic acid component has the formula (IV) :
• X is an or ⁇ ganic radical that comprises between 1 and 22 carbon atoms.
• X is an aliphatic, cycloaliphatic, or aromatic moiety.
• Particularly preferred hydroxycarboxylic acids are hy- droxy-group-containing fatty acids having 10 to 23 carbon atoms.
• Particularly preferred are 12-hydroxy-9-cis-octadecenoic acid and 12-hydroxy-octadecanoic acid.
• hy ⁇ droxycarboxylic acids are fatty acids obtained by hydroxyla- tion of unsaturated fatty acids such as oleic acid or linoleic acid, or hydroxylated plant-derived oil fatty acids such as a hydroxylated soyabean oil fatty acid isolated after hydroxy- lating soybean oil.
• the amount of hydroxycarboxylic acid component is selected such that it makes up about 0.1-10% of the total equivalent of hy ⁇ drogen donors in the total composition.
• the multi-component waterproofing composi ⁇ tion according to the present invention may contain further ingredients common for polyurethane art such as organic or in ⁇ organic fillers, catalysts, defoamers, dyes, pigments, plasti- cizers, oils, drying agents, rheological additives etc.
• Fillers which are useful in the present waterproofing compositions include silica, bentonites, chalk, talc, calcium silicate, wollastonite, asbestine, barium sulfate, graphite, hydrated alumina, chrysotile, serpentine, pearlite, vermicu- lite, mica, crocidolite, zirconium silicate, barium zirconate, calcium zirconium silicate, magnesium zirconium silicate, glass beads, fiberglass, titanium dioxide, PMF mineral fiber, nylon fiber, polyester fiber, cellulose fiber, polypropylene fiber could be used, various calcium carbonates, such as whiting, calcite, precipitated calcium carbonate, dolomite or the like, alumino silicates, such as kaolin, silica fillers, such as HiSil ® , Min U Sil ® , Cab-0 Sil ® or the like, fibrous talcs, reinforcing and nonreinforcing carbon blacks, natural organic fill
• Catalysts which are useful in the present waterproofing compositions include organometallic compounds containing bis ⁇ muth, tin, mercury, zinc or lead or salts of these metals with organic acids. Amine catalysts can also be used in the present waterproofing compositions.
• Plasticizers which are useful in the present water ⁇ proofing compositions include esters of organic carboxylic ac ⁇ ids or their anhydrides, phthalates, such as dioctyl phthalate or diisodecyl phthalate, adipates, such as dioctyl adipate, organic sulfonic esters, polybutenes, coumarone-indene liquid resin and other compounds which do not react with isocyanates.
• the water proofing compositions according to the pre ⁇ sent invention are applied as a liquid onto the concrete structure, which upon mixing the different components will start to cure.
• the multi-component is delivered as a multi-component composition, wherein the isocyanate compo ⁇ nent is separate from the polyol component; from the latent amine component; and, if present in the composition, from the hydroxyacid component.
• the multi-component composi ⁇ tion is present as a two-component composition, wherein the indiviual components are present in liquid form, wherein a first component comprises (a) the at least one a branched iso ⁇ cyanate component; and wherein a second component comprises (b) the at least one polyol component; (c) the at least one latent amine component having formula (I) or (II); and (d) the at least one silane-based compound of formula (III) and/or the at least one hydroxyacid component, wherein the individual components are as described above.
• a first component comprises (a) the at least one a branched iso ⁇ cyanate component
• a second component comprises (b) the at least one polyol component; (c) the at least one latent amine component having formula (I) or (II); and (d) the at least one silane-based compound of formula (III) and/or the at least one hydroxyacid component, wherein the individual components are as
• the multi- component multi-component composition is present as a three- component composition, wherein the individual components are present in liquid form, wherein a first component comprises (a) the at least one a branched isocyanate component; wherein a second component comprises (b) the at least one polyol com ⁇ ponent; (c) the at least one latent amine component having formula (I) or (II); and wherein a third component comprises (d) the at least one silane-based compound of formula (III) and/or the at least one hydroxyacid component, wherein the in ⁇ dividual components are as described above.
• the multiple-component waterproofing compositions can be applied in very different ways to a concrete structure.
• the individual liquid components mentioned above are kept in closed, separated drums from where they are pumped through hoses to a spraying gun.
• the individual components are mixed, and the mixed composition is sprayed onto the concrete structure.
• Such way of application is useful for large areas.
• the individual liq ⁇ uid components are combined and mixed together in one vessel. After mixing is completed, it will usually take some time un ⁇ til the mixed composition is completely cured.
• the mixed com ⁇ position is then manually applied onto the surface of the con ⁇ crete structure.
• the mixed composition will be applied with rollers onto a horizontal surface, and with trowels or spatulas onto a vertical surface.
• the mixed composition is applied to a thick ⁇ ness of from 2 to 5 mm onto the concrete wall.
• a thickness of 2 mm of the coating is commonly approved as waterproofing standard.
• the membrane could be used as self independent wa ⁇ terproofing membrane, but also as accessory to sheet applied membranes to fill the gap in places where sheets could not be applied due to complicated shape of the substrate.
• the polyol mixture is referred-to hereinafter al Polyol 1.
• Polyol 1 can e.g. be cured with 44.5 parts of Suprasec ® 2237 or with 32.1 parts of Desmodur ® VKS 10 or 64.5 parts of Curative 1 described above.
• Example 4 Preparation of a waterproofing composition
• Desmodur ® E-21 MDI isocyanate prepolymer available from Bayer AG, having a functionality of 2.8; 16% NCO .
• Second Component [0048]

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• 2012
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