C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/7210
C08L 83/06 (2006.01)
Patent
CA 1130487
ABSTRACT OF THE DISCLOSURE 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.
383360
Johnson Robert D.
Saam John C.
Schmidt Christine M.
Dow Corning Corporation
Gowling Lafleur Henderson Llp
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