Abstract: Compositions and mixtures along with processes for preparing and uses for the same.

Abstract: A composition crosslinkable by condensation reaction and producible using (A) organopolysiloxanes of the formula (R2O)3-aSiR1aO(SiR2O)nSiR1a(OR2)3-a (I), (B1) silanes of the formula R34-b(R4O)bSi (II), and optionally (B2) silicon compounds consisting of units of the formula R7c(R8O)dSiO(4-c-d)/2 (III). The composition contains organosilicon compounds having a molecular weight of less than or equal to 195 g/mol maximally in amounts of less than 0.5 wt%, based on organopolysiloxane (A).

Abstract: Crosslinkable compositions, processes for producing the same and products made therefrom. Where the crosslinkable compositions include a component (A) organosilicon compounds having at least two silanol groups and having a viscosity of 103 to 106 mPas at 25° C., mixtures (M) containing a component (B) of organosilicon compounds of the formula (I) and/or partial hydrolyzates thereof R6R7N—CR12SiRa(OR2)3-a??(I), a component (C), selected from (C2) compounds of the formula (III) R5OH??(III). The crosslinkable compositions may optionally also include a catalyst (D).

Abstract: Silicone-containing cartridges having a plunger at one end thereof are effectively sealed against moisture penetration by introducing a silicone oil composition having a viscosity of from 5000 mPa·s to 100,000 mPa·s between the walls of the plunger and the interior surface of the cartridge wall.

Abstract: A crosslinkable composition is based on organosilicon compounds that include (A) organopolysiloxanes of the formula (I), the formula (I) being (R7O)3-aSiR3aO(SiR42O)nSiR3a(OR7)3-a, and (B) siloxanes of the formula (II), the formular (II) being with the proviso that the sum of all x in formula (II) is greater than 0.

Abstract: Silicone-containing cartridges having a plunger at one end thereof are effectively sealed against moisture penetration by introducing a silicone oil composition having a viscosity of from 5000 mPa·s to 100,000 mPa·s between the walls of the plunger and the interior surface of the cartridge wall.

Abstract: Curable RTV-1 organopolysiloxane compositions which maintain the properties and adhesive strength even in hot moist conditions include a bis-hydroxyl-functional organopolysiloxane, an organosilicon compound comprising an ?-alkoxysilane bonded through a methylene group to a heteroatom of a heterocyclic compound, and a branched, non-resinous alkoxyfunctional organopolysiloxane containing at least 20 mol percent of R5SiO3/2 moieties where R5 is a hydrocarbyl radical.

Abstract: Curable RTV-1 organopolysiloxane compositions which maintain the properties and adhesive strength even in hot moist conditions include a bis-hydroxyl-functional organopolysiloxane, an organosilicon compound comprising an ?-alkoxysilane bonded through a methylene group to a heteroatom of a heterocyclic compound, and a branched, non-resinous alkoxyfunctional organopolysiloxane containing at least 20 mol percent of R5SiO3/2 moieties where R5 is a hydrocarbyl radical.

Abstract: Crosslinkable compositions based on organosilicon compounds, more particularly RTV-1 sealants, contain (A) at least one organosilicon compound having at least two condensable radicals, (B) at least one finely divided silicon dioxide having a BET surface area of 30 to 120 m2/g and a relative thickening effect ?rel of 1.4 to 10, and (C) at least one hydrocarbon component which has an initial boiling point above 150° C., a final boiling point below 350° C., each at a pressure of 1013 hPa, a kinematic viscosity of 1.5 to 6.0 mm2/s as measured at 40° C., a viscosity-density constant (VDC) of less than or equal to 0.820, a pour point of less than ?5° C., and an aromatic carbon atom (CA) content of less than 0.1% CA.

Abstract: Crosslinkable compositions based on organosilicon compounds, more particularly RTV-1 sealants, contain (A) at least one organosilicon compound having at least two condensable radicals, (B) at least one finely divided silicon dioxide having a BET surface area of 30 to 120 m2/g and a relative thickening effect ?rel of 1.4 to 10, and (C) at least one hydrocarbon component which has an initial boiling point above 150° C., a final boiling point below 350° C., each at a pressure of 1013 hPa, a kinematic viscosity of 1.5 to 6.0 mm2/s as measured at 40° C., a viscosity-density constant (VDC) of less than or equal to 0.820, a pour point of less than ?5° C., and an aromatic carbon atom (CA) content of less than 0.1% CA.

Abstract: Viscous compositions are metered discontinuously into storage vessels such as tubes, tubs, or cartridges, from a stable volume container free of dead space wherein the calculated volume, expressed as the mathematical product of adiabatic compressibility coefficients of the composition, the outlet pressure, and volume of the container exceed the metered volume.

Abstract: The present invention relates to a process for the continuous preparation of mixtures containing organosilicon compound (A) and solid (B) and optionally further components in a mixing unit comprising at least one rotating mixing shaft, wherein at least one mixing shaft makes an angle of inclination with the horizontal of more than 10 degrees and the inlet opening for the solid (B) is arranged higher than the outlet opening.

Abstract: Organosilicon compounds bearing silicon-bonded organyloxy groups are prepared by mixing and reacting silanol-functional organosilicon compounds with organosilicon compounds containing at least two organyloxy groups in a mixer with an energy input of at least 0.2 kW/Kg of mixture. At this level of energy input, reaction to form the organyloxy-functional product is rapid, and can be achieved without supplying external heat, and also without catalysts, if desired.

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 or multi-component condensation curing compositions can be cured in deep sections with low shrinkage, yet require no tin catalysts, or a significantly reduced tin catalyst level.

Abstract: Viscous compositions are metered discontinuously into storage vessels such as tubes, tubs, or cartridges, from a stable volume container free of dead space wherein the calculated volume, expressed as the mathematical product of adiabatic compressibility coefficients of the composition, the outlet pressure, and volume of the container exceed the metered volume.

Abstract: Two or multi-component condensation curing compositions can be cured in deep sections with low shrinkage, yet require no tin catalysts, or a significantly reduced tin catalyst level.

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: RTV-1 compositions are continuously produced from essentially linear organosilicon compounds having at least two condensable groups bound to silicon, filler and, optionally, further constituents, by mixing in one step in a single pass through the mixing zone of a rotor-stator mixer, wherein the pressure at the outlet of the mixing apparatus is at least 100 hPa greater than that at the inlet of the mixing apparatus.

Abstract: Crosslinkable organosilicon compositions with controllable modulus can be prepared using organosilicon compounds composed of units of the formula (HO)aRbSiO(4-a-b)/2??(I), where R is identical or different and is a monovalent, optionally substituted hydrocarbon radical optionally interrupted by heteroatoms, a is 0 or 1, and b is 0, 1, 2 or 3, with the proviso that the organosilicon compound has a single unit of the formula (I) where a=1, and has a viscosity of from 5 to 1000 mPas at 25° C.