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 α-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:
Compounds of the formula where R1 each individually is identical or different and is a hydrocarbon radical, R2 each individually is hydrogen or a methyl radical, n is an integer from 6 to 11, and m is 0 or 1, with the proviso that the sum of the number of carbon atoms in the three radicals R1 in the compound of the formula (I) is 6 to 24, can be admixed with curable polymer compositions to form products with hydrophilic surfaces, or can be applied to surfaces to render them hydrophilic.
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 α-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:
Moisture curable RTV-1 silicone elastomers with hydrophilic surfaces are produced from crosslinkable compositions containing a polyoxyethylene ether glycol terminated with both a C6-22 hydrocarbon group and an alkoxysilyl group.
Abstract:
Organosilicon compounds used for production of hydrophilic surfaces are prepared via an addition reaction of epoxy-functional silanes onto polyethylene glycols, cross-linked via a condensation reaction, and used for modification of substrate surfaces such as hardened silicone elastomers, glass surfaces, surfaces of silicatic construction materials, metals, and plastics.
Abstract:
The invention relates to cross-linkable compositions comprising (A) organosiloxanes consisting of units RcSiO4-c/2 (I) and R5(OR4)mSiO3-m/2 (II), (B) silanes R5Si(OR4)3 (II) and/or partial hydrolysates thereof in amounts of 5 to 20 parts by weight, based on 100 parts by weight of component (A), (C) organosiloxanes consisting of units R6a(R7O)bSiO(4-a-b)/2 (IV) in amounts of 1 to 30 parts by weight, (D) organosilicon compounds comprising units of the formula DfSi(OR9)eR8dO(4-d-e-f)/2 (V), in amounts of 0.1 to 2 parts by weight. The compositions are particularly useful as anti-graffiti coating.
Abstract:
Artificial stone which exhibits minimal visual change when exposed to weathering, UV light, and heat, is prepared by shaping and curing a crosslinkable composition based on crosslinkable organopolysiloxanes as a binder, at least 85% by weight of a filler component, the filler component containing at least 20% by weight of coarse grain mineral filler having grain sizes of 0.2 mm to 10 mm.
Abstract:
An artificial stone can be prepared by binding a suitable stone filler with a binder which contains a silicon bonded, hydroxyl-functional silicone resin also optionally bearing silicon bonded alkoxy groups, and an organosilicon compound which is a silane or siloxane bearing silicon bonded alkoxy groups. The artificial stone is resistant to the effects of UV light as well as heat.
Abstract:
Compounds of the formula where R1 each individually is identical or different and is a hydrocarbon radical, R2 each individually is hydrogen or a methyl radical, n is an integer from 6 to 11, and m is 0 or 1, with the proviso that the sum of the number of carbon atoms in the three radicals R1 in the compound of the formula (I) is 6 to 24, can be admixed with curable polymer compositions to form products with hydrophilic surfaces, or can be applied to surfaces to render them hydrophilic.
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 ηrel 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.