Process for producing a fine pored silicone foam

Details Process for producing a fine pored silicone foam Process for producing a fine pored silicone foam

1996-12-26

1998-04-14

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 72, 521 82, 521154, C08J 902

Patent

active

RE0357715

ABSTRACT:
A process for producing a high quality silicone foam by free foaming, in which a two-component addition crosslinking system is used, comprised of a component A which contains a silicone polymer having at least two double bonds per molecule, preferably vinyl groups, a complexed organo-platinum for example with butanol, fumed silica, and water, as well as further additives, if appropriate, and a component B which contains a silicone polymer having at least two double bonds per molecule, preferably vinyl groups, fumed silica, and polydimethyl hydrogen siloxane as SiH crosslinking; agent. The two components A and B are mixed, and the reaction mixture is subsequently pressurized, preferably using compressed air or nitrogen, in a storage vessel over several hours so that the gas is present in the mixture in a dissolved form. Subsequently, the reaction mixture is heated and made to react, preferably by applying it over an area and with a desired thickness, which results in the formation of a fine pored homogenous silicone foam.

REFERENCES:
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CA 105(14):116363m CA, Abstract of JP61078866 A Date Unknown.
79-86639B, PCT/JPO, Abstract of JP54134774 Date Unknown.
79-86639B(48) Derwent, Abstract of JP54134774, Date Unknown.
G. Steinbichler et al, "Spritzgieben von Flussigsiliconkautschuk", Kunststoffee vol. 81(1991) 7, pp. 579-581.
L. Merkt, Loiburg, "Spritzgieben von Flussigsiliconkautschuk", Kunststoffee vol. 81(1991) 7, pp. 579-581.
"Verarbeitung von Festem und Flussigem Siliconkautschuk", GAK Jahrgang 40, (Sep. 1987), pp. 506-508.
Advertisement Brochure of Argurg Maschinenfabrik Heal & Sohne, Mar. 1984.
G. Steinbichler et al, "Spritzgiessen von Flussigsiliconkautschuk", Kunststoffe vol. 77 (1987); pp. 931-935.

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