Coating composition for sealing surfaces

A moisture-curing coating composition comprising

• A) 100 parts by weight of at least one condensation curable polymer consisting of silane-terminated polymer(s) terminated at each polymer terminus by end groups of the formula (I)
• -A-Si(OR1)xR23-x (I),
• B) 30 to 200 parts by weight of at least one reactive plasticizer of the formula (V),
• R3—Si(OR1)yR23-x (V),
• C) 0 to 400 parts by weight of filler, and
• D) 0.01 to 20 parts by weight of curing catalyst,
• where
• A is a linear or branched alkylene group having 1 to 10 carbon atoms,
• R1 is a linear or branched, unsubstituted or halogen-substituted alkyl group having 1 to 10 carbon atoms,
• R2 is a linear or branched, unsubstituted or halogen-substituted alkyl group having 1 to 5 carbon atoms,
• R3 is an aryl group or a linear, branched or cyclic alkyl group or alkenyl group having 6 to 40 carbon atoms, in which individual hydrogen atoms may be substituted by organic radicals, and, if R3 is a linear, branched or cyclic alkyl group or alkenyl group, the carbon chain may be interrupted by oxygen atoms, and
• x and y are 1, 2 or 3, and
• wherein the silane-terminated polymers are polyesters, polyethers, polyalkylenes, and/or polyacrylates.

A moisture-curing coating composition comprising

• A) 100 parts by weight of at least one silane-terminated polymer having end groups of the formula (I)
• -A-Si(OR1)xR23-x (I),
• B) 7 to 200 parts by weight of at least one reactive plasticizer of the formula (II),
• R3—Si(OR4)yR53-y (II),
• C) 0 to 400 parts by weight of filler, and
• D) 0.01 to 20 parts by weight of curing catalyst,
• where
• A is a linear or branched alkylene group having 1 to 10 carbon atoms,
• R1 and R4 are each independently a linear or branched, unsubstituted or halogen-substituted alkyl group having 1 to 10 carbon atoms,
• R2 and R5 are each independently a linear or branched, unsubstituted or halogen-substituted alkyl group having 1 to 5 carbon atoms,
• R3 is an aryl group or a linear, branched or cyclic alkyl group or alkenyl group having 6 to 40 carbon atoms, in which individual hydrogen atoms may be substituted by organic radicals, and, if R3 is a linear, branched or cyclic alkyl group or alkenyl group, the carbon chain may be interrupted by oxygen atoms, and
• x and y are 1, 2 or 3,
• with the proviso that at least one reactive plasticizer (RW) is selected from the group consisting of decyltrimethoxysilane, decyltriethoxysilane, dodecyltrimethoxysilane, dodecyltriethoxysilane, tetradecyltrimethoxysilane, tetradecyltriethoxysilane, hexadecyltrimethoxsilane, hexadecyltriethoxysilane, and silanes having C16 alkyl groups,
• wherein the polymer(s) comprise end groups of the formula (IV)
• ˜O—C(═O)—NH-A-Si(OR1)xR23-x (IV).

A moisture-curing coating composition, comprising

• A) 100 parts by weight of at least one silane-terminated polymer having end groups of the formula (I)
• -A-Si(OR1)xR23-x (I),
• B) 30 to 200 parts by weight of at least one reactive plasticizer of the formula (II),
• R3—Si(OR4)yR53-y (II),
• C) 0 to 400 parts by weight of filler, and
• D) 0.01 to 20 parts by weight of curing catalyst,
• where
• A is a linear or branched alkylene group having 1 to 10 carbon atoms,
• R1 and R4 are each independently a linear or branched, unsubstituted or halogen-substituted alkyl group having 1 to 10 carbon atoms,
• R2 and R5 are each independently a linear or branched, unsubstituted or halogen-substituted alkyl group having 1 to 5 carbon atoms,
• R3 is an aryl group or a linear, branched or cyclic alkyl group or alkenyl group having 6 to 40 carbon atoms, in which individual hydrogen atoms may be substituted by organic radicals, and, if R3 is a linear, branched or cyclic alkyl group or alkenyl group, the carbon chain may be interrupted by oxygen atoms, and
• x and y are 1, 2 or 3, and
• wherein the silane-terminated polymers are polyesters, polyethers, polyalkylenes, and/or polyacrylates,
• wherein the reactive plasticizer of formula (II) is present in an amount of at least 15% by weight relative to the total weight of the coating composition, and wherein the coating composition further comprises at least one tetraalkylsilicate of the formula
• Si(OR6)4
• where R6 is a linear or branched, optionally halogenated alkyl group having 1-10 carbon atoms, or a partial hydrolysate thereof, or mixture thereof.

A moisture-curing coating composition, comprising

• A) 100 parts by weight of at least one silane-terminated polymer having end groups of the formula (I)
• -A-Si(OR1)xR23-x (I),
• B) 30 to 200 parts by weight of at least one reactive plasticizer of the formula (II),
• R3—Si(OR4)yR53-y (II),
• C) 0 to 400 parts by weight of filler, and
• D) 0.01 to 20 parts by weight of curing catalyst,
• where
• A is a linear or branched alkylene group having 1 to 10 carbon atoms,
• R1 and R4 are each independently a linear or branched, unsubstituted or halogen-substituted alkyl group having 1 to 10 carbon atoms,
• R2 and R5 are each independently a linear or branched, unsubstituted or halogen-substituted alkyl group having 1 to 5 carbon atoms,
• R3 is an aryl group or a linear, branched or cyclic alkyl group or alkenyl group having 6 to 40 carbon atoms, in which individual hydrogen atoms may be substituted by organic radicals, and, if R3 is a linear, branched or cyclic alkyl group or alkenyl group, the carbon chain may be interrupted by oxygen atoms, and
• x and y are 1, 2 or 3, and
• wherein the silane-terminated polymers are polyesters, polyethers, polyalkylenes, and/or polyacrylates,
• wherein the reactive plasticizer of formula (II) is present in an amount of more than 10% by weight relative to the total weight of the coating composition, and
• wherein a filler is present, and the filler comprises aluminum trihydrate and/or talc.

A moisture-curing coating composition, comprising

• A) 100 parts by weight of at least one silane-terminated polymer having end groups of the formula (I)
• -A-Si(OR1)xR23-x (I),
• B) 30 to 200 parts by weight of at least one reactive plasticizer of the formula (II),
• R3—Si(OR4)xR53-y (II),
• C) 0 to 400 parts by weight of filler, and
• D) 0.01 to 20 parts by weight of curing catalyst,
• where
• A is a linear or branched alkylene group having 1 to 10 carbon atoms,
• R1 and R4 are each independently a linear or branched, unsubstituted or halogen-substituted alkyl group having 1 to 10 carbon atoms,
• R2 and R5 are each independently a linear or branched, unsubstituted or halogen-substituted alkyl group having 1 to 5 carbon atoms,
• R3 is an aryl group or a linear, branched or cyclic alkyl group or alkenyl group having 6 to 40 carbon atoms, in which individual hydrogen atoms may be substituted by organic radicals, and, if R3 is a linear, branched or cyclic alkyl group or alkenyl group, the carbon chain may be interrupted by oxygen atoms, and
• x and y are 1, 2 or 3, and
• wherein the silane-terminated polymers are polyesters, polyethers, polyalkylenes, and/or polyacrylates,
• wherein the reactive plasticizer of formula (II) is present in an amount of at least 15% by weight relative to the total weight of the coating composition, and wherein in at least one first silane-terminated polymer of formula (I), A is a methylene group, and in least one second silane-terminated polymer of the formula (I), A is a propylene group, wherein at least 40 mol percent of the total of first and second silane-terminated polymers are first silane-terminated polymers.