摘要:
A method is provided for making silicone fluids having a high refractive index by effecting a hydrosilylation reaction between an arylacetylene such as phenylacetylene and a silicon hydride substrate, such as a cyclic or linear hyridosiloxane in the presence of a platinum catalyst.
摘要:
A method is provided for making platinum catalyzed heat curable organopolysiloxane compositions which have an enhanced rate of cure by using a silicon hydride siloxane in combination with a devolatilized mixture of a vinyl silicone fluid and a reaction product of a zero valent platinum complex and a vinylsilane.
摘要:
A method is provided for making a rigid spacer, containing a silicone bound desiccant which is useful for a multi-pane sealed window. An infrared radiation curable silicone is used as a binder for a desiccant such as a zeolite which is injected in a continuous manner into a U-shaped or V-shaped semi-rigid spacer such as a steel channel.
摘要:
Shelf stable heat curable mixtures of vinyl substituted organopolysiloxane fluid and siloxane hydride are provided. The one part polyorganosiloxane mixtures are catalyzed with an inclusion compound of a cyclodextrin and a complexing ligand such as, cyclopentadiene, 1,5-cyclooctadiene or norbornadiene and a platinum metal material, such as a C.sub.(1-4) alkyl substituted platinum.
摘要:
Flame retardant compression moldable aromatic thermoplastic polycarbonate compositions are provided capable of satisfying the UL-94 V-O requirements and substantially lowering the heat and smoke emitted during burning. The aromatic thermoplastic polycarbonates utilize an aromatic polycarbonate resin in combination with an effective amount of a silicate resin having condensed triorganosiloxy units such as trimethylsiloxy units and diorganosiloxy units such as methylvinylsiloxy units.
摘要:
A method of making a coated substrate which includes the steps of applying a layer of a coating composition, said coating composition comprising an alkenyl functional organopolysiloxane and a hydride functional organopolysiloxane, to the substrate, said substrate comprising a catalytically effective amount of a precious metal catalyst, and allowing the layer to cure, allows the use of a non-catalyzed coating bath having a very long useful life, while providing a highly reactive coating layer that may be rapidly cured at low temperature. A catalyst-containing article comprising a substrate selected from papers, polymer films, polymer coated papers, metal foils and combinations thereof, a precious metal catalyst disposed on at least one surface of the substrate, and an addition curable siloxane coating composition on said deposited precious metal catalyst, wherein said catalyst capable of catalyzing the cure of said addition curable siloxane coating composition.
摘要:
A method for silating unsaturated monomers by contacting a system having at least one SiH group, an unsaturated monomer, a transition metal catalyst and a free radical polymerization inhibitor is described.
摘要:
A method is provided for making a 4-hydroxy-tetraorganopiperidinyloxy, such as 4-OH TEMPO. These free radical spin-traps can be used as anaerobic inhibitors which have been found useful for polymerizing reactive acrylic monomers.
摘要:
The use of an effective amount of a cyclodextrin has been found to enhance the rate of addition between a silicon hydride and an olefinically unsaturated material in the presence of a platinum catalyst.
摘要:
Inclusion compounds of a cyclodextrin, such as .beta.-cyclodextrin, and a palladium halide-diene complex, such as a complex of PdCl.sub.2 and 1,5-cyclooctadiene have been found to be effective hydrosilylation catalysts. One part heat curable organopolysiloxane compositions are also provided.