Foamable organosiloxane compositions

Details Foamable organosiloxane compositions Foamable organosiloxane compositions

C - Chemistry, Metallurgy

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C08L 83/04 (2006.01) C08J 9/00 (2006.01) C08J 9/04 (2006.01) C08J 9/12 (2006.01) C08J 9/14 (2006.01) C08L 83/10 (2006.01)

Patent

CA 1247799

FOAMABLE ORGANOSILOXANE COMPOSITIONS Abstract Polyorganosiloxane foams exhibiting a desirable combination of low density, an average cell size between 0.2 and 4 mm and a cell concentration of at least 4 per linear centimeter are obtained by dispensing and curing moisture curable organosiloxane compositions containing a dispersed liquid or gaseous blowing agent and, as a foam stabilizer, a resinous organosiloxane copolymer comprising trimethylsiloxy units, SiO4/2 units and fluorine-containing organosiloxane units. The polymer portion of the organosiloxane compositions can be a polydimethylsiloxane or a graft copolymer comprising at least 20 mole percent of dimethylsiloxane units in combination with organic units.

491063

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