Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1978-04-28
1980-09-09
Ziegler, J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 296PM, 260 4226, 260 4254, 525119, 528 18, C08L 8304
Patent
active
042216885
ABSTRACT:
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.
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Johnson Robert D.
Saam John C.
Schmidt Christine M.
Bittell James E.
Borrousch Roger H.
Dow Corning Corporation
Ziegler J.
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