Foamable organosiloxane compositions

Details Foamable organosiloxane compositions Foamable organosiloxane compositions

1984-10-26

1985-05-21

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 78, 521 86, 521 98, 521 99, 521111, 521132, 521134, 521154, 524858, 524859, 524860, 524861, 528 33, 528 34, 528901, 525477, C08J 908, C08J 912, C08J 914

Patent

active

045187169

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, SiO.sub.4/2 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.

REFERENCES:
patent: 4026845 (1977-05-01), Kim et al.
patent: 4229548 (1980-10-01), Sattlegger et al.
patent: 4418157 (1983-11-01), Modie

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