Silicone rubber sponge composition, method of making the sponge

Details Silicone rubber sponge composition, method of making the sponge Silicone rubber sponge composition, method of making the sponge

1975-07-03

1977-05-31

Foelak, Morton

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 37SB, C08J 910

Patent

active

040268462

ABSTRACT:
A sponge prepared from silicone rubber using 4,4'-oxybis(benzenesulfonhydrazide) as a blowing agent has improved heat stability when calcium oxide, magnesium oxide or a mixture of these two oxides is present in the composition. The sponge prepared using these oxides has a lower compression deflection after heat aging than the compositions which do not contain the oxides.

REFERENCES:
patent: 3271332 (1966-09-01), Bond et al.
patent: 3284485 (1966-11-01), Goossens
patent: 3395775 (1968-08-01), Smith
patent: 3565858 (1971-02-01), Kuiege
patent: 3770662 (1973-11-01), Hennessy et al.
patent: 3791998 (1974-02-01), Burns

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