Abstract: A composition comprising peroxidically crosslinking condensation-crosslinking, or addition-crosslinking silicone rubber; metal compounds selected from metal oxides such as magnesium oxide, aluminum oxide, tin oxide, calcium oxide and barium oxide and precursors thereof which produce oxides on heating, boric acid, and zinc borate; platinum complexes having at least one unsaturated group; and hollow beads. The compositions form a coherent ceramic insulation upon heating which still enables the conductors to carry high voltage electrical signals.

Abstract: A composition comprising peroxidically crosslinking condensation-crosslinking, or addition-crosslinking silicone rubber; metal compounds selected from metal oxides such as magnesium oxide, aluminum oxide, tin oxide, calcium oxide and barium oxide and precursors thereof which produce oxides on heating, boric acid, and zinc borate; platinum complexes having at least one unsaturated group; and hollow beads. The compositions form a coherent ceramic insulation upon heating which still enables the conductors to carry high voltage electrical signals.

Abstract: The invention relates to compositions which can be prepared from at least one polyorganosiloxane, boric acid and water, and which may serve as a pelletizing additive for crosslinkable silicone rubber formulations. A small proportion of the pelletizing additive, when added to a ore component crosslinkable silicone rubber, or to individual components of a two or more component silicone rubber formulation, allow production of free flowing pellets which retain storage stability for extended periods of time.

Abstract: A composition which is useful for producing profiles and cable insulation which retain their function in the event of fire, comprise peroxidically crosslinking or condensation-crosslinking silicone rubber, metal oxides selected from magnesium oxide, aluminum oxide, tin oxide, calcium oxide and barium oxide and metal compounds of this class which produce oxides on heating, boric acid, zinc borate, and a platinum complex having at least one unsaturated group.

Abstract: Compositions which can be crosslinked to form flame retardant and/or tracking resistant and arc resistant organopolysiloxane elastomers which comprises adding to a cross-linkable organopolysiloxane an additive which is obtained by mixing(A) 60 to 80 percent by weight of diorganopolysiloxane having 75 to 85 mol percent of dimethylsiloxane units and 15 to 25 mol percent of vinylmethylsiloxane units,(B) 20 to 35 percent by weight of a metal oxide selected from the group consisting of titanium dioxide, zirconium dioxide, zinc oxide, Ce(III) oxide and Ce(IV) oxide,(C) 0.05 to 0.25 percent by weight of platinum, calculated as the element,(D) 1 to 5 percent by weight of an organosilicon compound having basic nitrogen bonded via carbon to siliconin which the sum of the percentages (A) to (D) adds up to 100 percent by weight based on the total weight of the additive.

Abstract: Organopolysiloxane compositions which can be cured to form elastomers and contain:(a) An organopolysiloxane containing Si-bonded vinyl groups;(b) an organopolysiloxane containing Si-bonded hydrogen;(c) a platinum catalyst which promotes the addition of Si-bonded hydrogen to vinyl groups;(d) an inhibitor which delays the addition reaction of Si-bonded hydrogen with vinyl groups at room temperature, with the proviso that inhibitors containing a hydroperoxy radical are excluded; and(e) an organic peroxide, with the proviso that acyl peroxides are excluded;are used as adhesives.These adhesives are used to bond similar or dissimilar organopolysiloxane elastomers to each other and to bond organopolysiloxane elastomers to optionally primed substrates.

Abstract: A process for preparing moldings or coatings by compression molding, transfer molding or injection molding from materials which contain free-radical generators and an organopolysiloxane which can be crosslinked to form organopolysiloxane elastomers, in which the free-radical generators comprise at least one free-radical generator having a half-life in benzene of 1 minute at 60.degree. C. to 149.degree. C. and at least one free-radical generator having a half-life in benzene of 1 minute at 150.degree. C. to 200.degree. C. Other materials which may be molded are those which can be crosslinked by the addition reaction of Si-bonded hydrogen with SiC-bonded vinyl groups and also contain at least one free-radical generator.

Abstract: An electrically conductive composition containing a cross-linked organopolysiloxane and an electrically conductive lamp black in which the electrically conductive lamp black comprises from 15 to 60 percent by weight based on the weight of the organopolysiloxane of furnace black having a surface area of from 40 to 100 m.sup.2 /g and from 5 to 25 percent by weight of acetylene black based on the weight of the organopolysiloxane.

Abstract: The invention relates to adhesive compositions comprising vinyl containing organopolysiloxanes, organopolysiloxanes having Si-bonded hydrogen atoms and catalysts which promote the addition of the Si-bonded hydrogen atoms to the vinyl groups.These adhesives may be combined with other electrically conductive materials and used in connecting flexible heating resistors to electrodes.

Abstract: The invention relates to adhesive compositions comprising vinyl containing organopolysiloxanes, organopolysiloxanes having Si-bonded hydrogen atoms and catalysts which promote the addition of the Si-bonded hydrogen atoms to the vinyl groups.These adhesives may be combined with other electrically conductive materials and used in connecting flexible heating resistors to electrodes.