Microwave cured silicone elastomeric foam

Details Microwave cured silicone elastomeric foam Microwave cured silicone elastomeric foam

1982-06-25

1983-07-05

Foelak, Morton

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 50, 521 65, 521 66, 521915, B29H 526

Patent

active

043917658

ABSTRACT:
A simplified method of manufacturing a silicone elastomeric foam comprises mechanically generating a stable froth of an aqueous emulsion, while adding surfactant and thickener, then exposing the stable froth to microwave energy to remove the water. The emulsion consists essentially of anionically stabilized hydroxyl endblocked polydiorganosiloxane, colloidal silica, an organic tin compound, and water, the emulsion having a pH in the range of 9 to 11.5 inclusive. The dried froth is an elastomeric, cellular structure possessing typical silicone elastomer heat stability and long-term aging stability.

REFERENCES:
patent: 2432353 (1947-12-01), Talalay
patent: 3491033 (1970-01-01), Dunn
patent: 3737399 (1973-06-01), Locke et al.
patent: 3737488 (1973-06-01), Porter et al.
patent: 4026844 (1977-05-01), Kittle et al.
Carl, "Neoprene Latex", E. I. DuPont de Nemours and Co. (Inc.), 1962.

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