Process for the preparation of organopolysiloxane foams

Details Process for the preparation of organopolysiloxane foams Process for the preparation of organopolysiloxane foams

1979-03-02

1980-10-28

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

260 37SB, 521 91, 521 96, 521 99, 521122, 521154, 528 24, 528 31, 528 33, 528901, 525474, C08J 900, C08J 902

Patent

active

042308208

ABSTRACT:
Organopolysiloxane foams are prepared by heating a mixture containing (A) a diorganopolysiloxane, (B) silicon dioxide having a surface area of at least 50 m.sup.2 /g, (C) a peroxide compound, (D) at least one organosilicon compound containing at least 2 weight percent of Si-bonded hydroxyl groups and (E) at least one organopolysiloxane having Si-bonded hydrogen, to a temperature between 280.degree. and 320.degree. C. at a pressure which does not exceed the pressure of the surrounding atmosphere.

REFERENCES:
patent: 3428580 (1969-02-01), Nitzche et al.
patent: 3677981 (1972-07-01), Wada
patent: 3923705 (1975-12-01), Smith
patent: 4024091 (1977-05-01), Lee et al.
patent: 4026843 (1977-05-01), Kittle
patent: 4108833 (1978-08-01), Hatanaka et al.

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