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AssigneeDow Corning Corporation
InventorsRobert D. Johnson, John C. Saam, Christine M. Schmidt
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A silicone emulsion having a dispersed phase of an anionically stabilized hydroxylated polydiorganosiloxane and a colloidal silica and a continuous phase of water in which the pH is 9 to 11.5 provides an elastomeric product, such as a film or coating, upon removal of the water at ambient conditions. The silicone emulsion can be prepared by adding the colloidal silica to the hydroxylated polydiorganosiloxane in an emulsified state and thereafter adjusting the pH within the range of 9 to 11.5 inclusive with such materials as an organic amine or sodium hydroxide. These emulsions are stable during storage over extended periods of time and will provide elastomeric products. A silicone emulsion can also be prepared as described except the pH is adjusted above 11.5.
A silicone emulsion suitable to provide an elastomeric product upon removal of the water under ambient conditions comprising a continuous aqueous phase and a dispersed phase, the dispersed phase consists essentially of an anionically stabilized hydroxylated polydiorganosiloxane which contains about 2 silicon-bonded hydroxyls per molecule an organic tin compound and a colloidal silica, said silicone emulsion having a pH in a range of 9 to 11.5 inclusive.
A method of preparing a silicone emulsion suitable to provide an elastomeric product upon removal of the water under ambient conditions consisting essentially
A method of preparing a silicone emulsion suitable to provide an elastomeric product upon removal of the water under ambient conditions consisting essentially of
Dependencies are inferred from the claim text.