Composition featuring enhanced adhesion to porous substrates

Claim 2

Composition comprising (a) at least one silane-functional polymer P, wherein the silane-functional polymer P is selected from: (i) a silane-functional polyurethane P1 obtained by the reaction of a silane containing at least one group that is reactive towards isocyanate groups with a polyurethane polymer having isocyanate groups, and (ii) a silane-functional organic polymer P3 obtained by a hydrosilation reaction of polymers having terminal double bonds, such polymers being poly(meth)acrylate polymers; (b) at least one organosilane which contains at least one sulphur atom; and (c) at least one organotitanate having at least one multidentate ligand, wherein the composition comprises no additional catalysts other than organotin compounds, organobismuth compounds, bismuth complexes, 1,4-diazabicyclo[2.2.2]octane, 2,2′-dimorpholinodiethyl ether, aminosilanes, and mixtures of such additional catalysts.

Claim 3

Composition according to claim 1 , wherein the silane-functional polymer P contains end groups of the formula (I) where R 1 stands for an alkyl group having 1 to 8 C atoms; R 2 stands for an acyl or alkyl group having 1 to 5 C atoms; R 3 stands for a linear or branched, optionally cyclic, alkylene group having 1 to 12 C atoms, optionally with aromatic fractions, and optionally with one or more heteroatoms; and a stands for a value of 0 or 1 or 2.

Claim 4

Composition according to claim 1 , wherein the organosilane which contains at least one sulphur atom is an organosilane of the formula (II) where the radical R 4 stands for an alkyl group having 1 to 8 C atoms; the radical R 5 stands for a methyl or for an ethyl group; the radical R 6 stands for a linear alkylene group having 1 to 10 C atoms; and b stands for a value of 0.

Claim 5

Composition according to claim 1 , wherein the organotitanate is an organotitanate of the formula (V) where the radical R 7 stands for a hydrogen atom or for a linear or branched alkyl group having 1 to 8 C atoms; the radical R 8 stands for a hydrogen atom or for a linear or branched alkyl group having 1 to 8 C atoms which optionally contains heteroatoms; the radical R 9 stands for a hydrogen atom or for an alkyl group having 1 to 8 C atoms or for a linear or branched alkoxy group having 1 to 8 C atoms; the radical R 10 stands for a linear or branched alkyl radical having 1 to 20 C atoms; and n stands for a value of 1 or 2.

Claim 6

Composition according to claim 1 , wherein the fraction of the organosilane is 0.1% to 7% by weight, of the overall composition.

Claim 7

Composition according to claim 1 , wherein the fraction of the organotitanate is 0.1% to 10% by weight, of the overall composition.

Claim 8

Composition according to claim 1 , wherein the composition further comprises at least one filler.

Claim 9

Composition according to claim 7 , wherein the fraction of the filler is 10% to 70% by weight, of the overall composition.

Claim 10

An adhesive, sealant, or coating composition comprising the composition according to claim 1 .

Claim 11

An adhesive or sealant composition for primerless bonding or scaling of porous substrates comprising the composition according to claim 1 .

Claim 12

Method of adhesively bonding two substrates, S1 and S2, comprising the steps of applying a composition according to claim 1 to a substrate S1 and/or a substrate S2; contacting the substrates S1 and S2 via the applied composition within an open time of the composition; curing the composition with water; the substrates S1 and S2 being alike or different from one another.

Claim 13

Method of scaling or coating, comprising the steps of i′) applying a composition according to claim 1 to a substrate S1 and/or between two substrates S1 and S2; ii′) curing the composition with water; the substrates S1 and S2 being alike or different from one another.

Claim 14

Method according to claim 11 , wherein at least one of the substrates, S1 or S2, is selected from the group consisting of concrete, mortar, brick, tile, plaster, natural stone, glass, glass ceramic, metal, metal alloy, wood, plastic and lacquer.

Claim 15

Article bonded, sealed or coated by a method according to claim 11 .

Claim 16

Article according to claim 14 , wherein the article is a built structure.

Claim 17

The method of claim 11 , wherein the method does not utilize a primer.

Claim 18

Composition according to claim 1 , wherein the at least one ligand is an acetylacetonate group.

Claim 19

Composition according to claim 1 , wherein the composition comprises no additional catalysts.

Claim 20

Composition comprising (a) at least one silane-functional polymer P, wherein the silane-functional polymer P is selected from: (i) a silane-functional polyurethane P1 obtained by the reaction of a silane containing at least one group that is reactive towards isocyanate groups with a polyurethane polymer having isocyanate groups, (ii) a silane-functional polyurethane P2 obtained by the reaction of an isocyanatosilane with a polymer having functional end groups that are reactive towards isocyanate groups, and (iii) a silane-functional organic polymer P3 obtained by a hydrosilation re action of polymers having terminal double bonds; (b) at least one organosilane which contains at least one sulphur atom; and (c) at least one organotitanate; wherein the organosilane which contains at least one sulphur atom is an organosilane of the formula (IV) where the radical R 4 stands for an alkyl group having 1 to 8 C atoms; the radical R 5 stands for an alkyl group having 1 to 5 C atoms, or for an acyl group; the radical R 6 stands for a linear or branched, optionally cyclic, alkylene group having 1 to 20 C atoms, optionally with aromatic fractions, and optionally with one or more heteroatoms; and b stands for a value of 0 or 1 or 2.

Claim 21

Composition comprising (a) at least one silane-functional polymer P, wherein the silane-functional polymer P is selected from: (i) a silane-functional polyurethane P1 obtained by the reaction of a silane containing at least one group that is reactive towards isocyanate groups with a polyurethane polymer having isocyanate groups, (ii) a silane-functional polyurethane P2 obtained by the reaction of an isocyanatosilane with a polymer having functional end groups that are reactive towards isocyanate groups, and (iii) a silane-functional organic polymer P3 obtained by a hydrosilation re action of polymers having terminal double bonds; (b) at least one organosilane which contains at least one sulphur atom; and (c) at least one organotitanate; wherein the organosilane which contains at least one sulphur atom is an organosilane of the formula (IV) where the radical R 4 stands for an alkyl group having 1 to 8 C atoms; the radical R 5 stands for an alkyl group having 1 to 5 C atoms, or for an acyl group; the radical R 6 stands for a linear or branched, optionally cyclic, alkylene group having 1 to 20 C atoms, optionally with aromatic fractions, and optionally with one or more heteroatoms; and b stands for a value of 0 or 1 or 2.

Claim 22

A composition comprising (a) at least one silane-functional polymer P, wherein the silane-functional polymer P is a silane-functional polyurethane obtained by the reaction of a silane containing at least one group that is reactive towards isocyanate groups with a polyurethane polymer having isocyanate groups; (b) at least one organosilane which contains at least one sulphur atom; and (c) at least one organotitanate, wherein the organotitanate is an organotitanate of the formula (V) where the radical R 7 stands for a hydrogen atom or for a linear or branched alkyl group having 1 to 8 C atoms; the radical R 8 stands for a hydrogen atom or for a linear or branched alkyl group having 1 to 8 C atoms which optionally contains heteroatoms; the radical R 9 stands for a hydrogen atom or for an alkyl group having 1 to 8 C atoms or for a linear or branched alkoxy group having 1 to 8 C atoms; the radical R 10 stands for a linear or branched alkyl radical having 1 to 20 C atoms; and n stands for a value of 1 or 2; wherein the composition comprises no additional catalysts other than organotin compounds, organobismuth compounds, bismuth complexes, 1,4-diazabicyclo[2.2.2]octane, 2,2′-dimorpholinodiethyl ether, aminosilanes, and mixtures of such additional catalysts.

Claim 23

A composition comprising (a) at least one silane-functional polymer P, wherein the silane-functional polymer P is a silane-functional polyurethane obtained by the reaction of a silane containing at least one group that is reactive towards isocyanate groups with a polyurethane polymer having isocyanate groups; (b) at least one organosilane which contains at least one sulphur atom; and (c) at least one organotitanate, wherein the organotitanate is an organotitanate of the formula (V) where the radical R 7 stands for a hydrogen atom or for a linear or branched alkyl group having 1 to 8 C atoms; the radical R 8 stands for a hydrogen atom or for a linear or branched alkyl group having 1 to 8 C atoms which optionally contains heteroatoms; the radical R 9 stands for a hydrogen atom or for an alkyl group having 1 to 8 C atoms or for a linear or branched alkoxy group having 1 to 8 C atoms; the radical R 10 stands for a linear or branched alkyl radical having 1 to 20 C atoms; and n stands for a value of 1 or 2; wherein the composition comprises no additional catalysts other than organotin compounds, organobismuth compounds, bismuth complexes, 1,4-diazabicyclo[2.2.2]octane, 2,2′-dimorpholinodiethyl ether, aminosilanes, and mixtures of such additional catalysts.

Claim 24

Composition comprising (a) at least one silane-functional polymer obtained by the reaction of an isocyanatosilane with a polyurethane polymer containing hydroxyl groups; (b) at least one organosilane which contains at least one sulphur atom; and (c) at least one organotitanate having at least one multidentate ligand, wherein the composition comprises no additional catalysts other than organotin compounds, organobismuth compounds, bismuth complexes, 1,4-diazabicyclo[2.2.2]octane, 2,2′-dimorpholinodiethyl ether, aminosilanes, and mixtures of such additional catalysts.

Claim 25

Composition comprising (a) at least one silane-functional polymer obtained by the reaction of an isocyanatosilane with a polyurethane polymer containing hydroxyl groups; (b) at least one organosilane which contains at least one sulphur atom; and (c) at least one organotitanate having at least one multidentate ligand, wherein the composition comprises no additional catalysts other than organotin compounds, organobismuth compounds, bismuth complexes, 1,4-diazabicyclo[2.2.2]octane, 2,2′-dimorpholinodiethyl ether, aminosilanes, and mixtures of such additional catalysts.

Claim 26

Composition comprising (a) at least one silane-functional polymer obtained by the reaction of an isocyanatosilane with a polymer having functional end groups that are reactive towards isocyanate groups, in an amount of 10-60 percent by weight of the composition; (b) at least one organosilane which contains at least one sulphur atom, in an amount of 0.4 to 7 percent by weight of the composition; and (c) at least one organotitanate having at least one multidentate ligand, wherein the composition comprises no additional catalysts other than organotin compounds, organobismuth compounds, bismuth complexes, 1,4-diazabicyclo[2.2.2]octane, 2,2′-dimorpholinodiethyl ether, aminosilanes, and mixtures of such additional catalysts.

Claim 27

Composition comprising (a) at least one silane-functional polymer obtained by the reaction of an isocyanatosilane with a polymer having functional end groups that are reactive towards isocyanate groups, in an amount of 10-60 percent by weight of the composition; (b) at least one organosilane which contains at least one sulphur atom, in an amount of 0.4 to 7 percent by weight of the composition; and (c) at least one organotitanate having at least one multidentate ligand, wherein the composition comprises no additional catalysts other than organotin compounds, organobismuth compounds, bismuth complexes, 1,4-diazabicyclo[2.2.2]octane, 2,2′-dimorpholinodiethyl ether, aminosilanes, and mixtures of such additional catalysts.