Abstract: Crosslinkable compositions based on organopolysiloxanes containing organyloxy groups may have low viscosities and self-leveling properties, and contain (A) organopolysiloxanes containing organyloxy groups of the formula (I) RaR1b(OR2)cSiO(4-a-b-c)/2??(I), (B) organosilicon compounds of the formula (II) (R4O)dSiR3(4-d)??(II), and/or their partial hydrolysates, (C) organosilicon compounds containing basic nitrogen of the formula (III) (R6O)eSiR5(4-e)??(III), and/or their partial hydrolysates, and (D) organosilicon compounds of the formula (IV) (R8O)hSiR7(4-h) and/or their partial hydrolysates.

Abstract: Crosslinkable compositions based on organopolysiloxanes containing organyloxy groups which have improved wetting behavior, and especially improved early stability, contain (A) organopolysiloxanes composed of units RaR1b(OR2)cSiO(4?a?b?c)/2??(I), (B) organosilicon compounds (R4O)dSiR3(4?d)??(II), and/or their partial hydrolysates, and (C) organosilicon compounds containing basic nitrogen (R6O)eSiR5(4?e)??(III), and/or their partial hydrolysates.

Abstract: Crosslinkable compositions based on organopolysiloxanes containing organyloxy groups may have low viscosities and self-leveling properties, and contain (A) organopolysiloxanes containing organyloxy groups of the formula (I) RaR1b(OR2)cSiO(4-a-b-c)/2??(I), (B) organosilicon compounds of the formula (II) (R4O)dSiR3(4-d)??(II), and/or their partial hydrolysates, (C) organosilicon compounds containing basic nitrogen of the formula (III) (R6O)eSiR5(4-e)??(III), and/or their partial hydrolysates, and (D) organosilicon compounds of the formula (IV) (R8O)hSiR7(4-h) and/or their partial hydrolysates.

Abstract: Crosslinkable compositions based on organopolysiloxanes containing organyloxy groups which have improved wetting behavior, and especially improved early stability, contain (A) organopolysiloxanes composed of units RaR1b(OR2)cSiO(4-a-b-c)/2??(I), (B) organosilicon compounds (R4O)dSiR3(4-d)??(II), and/or their partial hydrolysates, and (C) organosilicon compounds containing basic nitrogen (R6O)eSiR5(4-e)??(III), and/or their partial hydrolysates.

Abstract: A method for testing a container (11) having an interior volume (12) for tightness, comprising the following steps: providing the container (11) in a pressure chamber (10) and reducing pressure within the pressure chamber (10) or increasing pressure within the container (11) as far as a predefined test pressure, ascertaining a pressure profile (100) within the pressure chamber (10) over time, comparing the pressure profile (100) to a reference profile (200) in order to determine whether a leak is present within the container (11), wherein ambient conditions of the container (11) and/or the pressure chamber (10) are monitored and the reference profile (200) is adapted to changing ambient conditions.

Abstract: A method for testing a container (11) having an interior volume (12) for tightness, comprising the following steps: providing the container (11) in a pressure chamber (10) and reducing pressure within the pressure chamber (10) or increasing pressure within the container (11) as far as a predefined test pressure, ascertaining a pressure profile (100) within the pressure chamber (10) over time, comparing the pressure profile (100) to a reference profile (200) in order to determine whether a leak is present within the container (11), wherein ambient conditions of the container (11) and/or the pressure chamber (10) are monitored and the reference profile (200) is adapted to changing ambient conditions.

Abstract: Moisture curable silicone adhesives used for sealing joints and for the bonding of substrates such as PVC, concrete, mineral substrates, metals, glass, ceramic, wood, or painted surfaces are prepared from crosslinkable compositions containing both hydrophilic and hydrophobic fumed silicas in a mass ratio of 1:10 to 10:1.

Abstract: Moisture curable silicone adhesives used for sealing joints and for the bonding of substrates such as PVC, concrete, mineral substrates, metals, glass, ceramic, wood, or painted surfaces are prepared from crosslinkable compositions containing both hydrophilic and hydrophobic fumed silicas in a mass ratio of 1:10 to 10:1.

Abstract: Condensation crosslinkable compositions based on organosilicon compounds contain at least one heterocyclic compound A[CR12SiRa(OR2)3-a]x which contains at least one heteroatom from main groups 3 or 5 and is bonded to CR12 through one of these heteroatoms.

Abstract: Two-component adhesive or sealing compounds (K), comprising a first component (K1), containing silane-terminated prepolymers (A), which have end groups of the general formula (II) —O—CO—NH—(CH2)y—SiR23-x(OR1)x (II), where R1 and R2 independently from each other are hydrocarbon groups having 1-18 carbon atoms or ?-oxaalkyl-alkyl groups having in total 2-20 carbon atoms, x is 2 or 3, and y is a number from 1 to 10, and a second component (K2), containing water, provided that at least 50% of all prepolymer molecules (A) do not have any additional urethane or urea units in the backbone of the prepolymer chain.

Abstract: Functional polymers having silyl end groups are prepared in a continuous process by polymer analogous reaction of a reactive polymer and inter-reactive silane. The polymer products are surprisingly uniform in properties and exhibit higher physicochemical properties as well.

Abstract: Room temperature, moisture curable, transparent, and non-yellowing polymer blends contain at least one alkoxysilyl-terminated polymer bearing an end group -A-(CH2)m—SiR1a—(OR2)3-a where A is a divalent linker group, contain a silica filler of high surface area as the sole filler, and is catalyzed by a catalyst which is free or substantially free of amine groups.

Abstract: Condensation crosslinkable compositions based on organosilicon compounds contain at least one heterocyclic compound A[CR12SiRa(OR2)3-a]x which contains at least one heteroatom from main groups 3 or 5 and is bonded to CR12 through one of these heteroatoms.

Abstract: Isocyanate-free foamable mixtures suitable for filling construction voids and for other uses, comprise isocyanate-free, alkoxysilane-terminated prepolymers (A) which have a silane end group of the formula [1], where X and Y are each an oxygen atom, an N—R3 group or a sulfur atom, R1 is an alkyl, cycloalkyl, alkenyl or aryl radical having 1-10 carbon atoms, R2 is an alkyl radical having 1-2 carbon atoms or an ?-oxyalkylalkyl radical having a total of 2-10 carbon atoms, R3 is a hydrogen atom, an alkyl, alkenyl or aryl radical having 1-10 carbon atoms or a —CH2—SiR1z(OR2)3-z group, and z is 0 or 1, with the proviso that at least one of the two groups X and Y is an NH function, and (B) blowing agents.

Abstract: Functional polymers having silyl end groups are prepared in a continuous process by polymer analogous reaction of a reactive polymer and inter-reactive silane. The polymer products are surprisingly uniform in properties and exhibit higher physicochemical properties as well.

Abstract: Room temperature, moisture curable, transparent, and non-yellowing polymer blends contain at least one alkoxysilyl-terminated polymer bearing an end group -A-(CH2)m—SiR1a—(OR2)3-a where A is a divalent linker group, contain a silica filler of high surface area as the sole filler, and is catalyzed by a catalyst which is free or substantially free of amine groups.

Abstract: Moisture curable alkoxysilyl-functional polymers crosslinkable to elastomers having improved recovery properties are prepared by incorporating in the curable composition, both an aminoalkylalkoxysilane and an epoxyalkylalkoxysilane.

Abstract: Condensation curable systems employ ordinarily highly reactive polymers bearing methylene-linked alkoxysilyl groups. By limiting the amounts of activating compounds during the preparation of such polymers, the reactivity is sharply decreased, yet can be increased by addition of suitable catalysts. As a result, the polymers may be easily processed, yet the moisture curing times may be adjusted readily.

Abstract: The present invention relates to a process for preparing organyloxysilyl-terminated polymers which have increased stability toward atmospheric moisture, by reacting hydroxy-terminated organic polymers with isocyanato-functional silanes in the presence of at least one catalyst selected from the group consisting of bismuth and zinc compounds, and to crosslinkable compositions comprising such polymers.

Abstract: Alkoxysilane-terminated prepolymers prepared by reaction of a methylene-spaced isocyanate-reactive group-containing alkoxysilane in molar excess with an isocyanate-reactive prepolymer have high reactivity towards atmospheric moisture while preparing elastomers of high tensile strength and elongation.