Silicone foam compositions rapidly cross-linkable at ambient temperatures and methods of making and using same

A two-part, rapidly cross-linkable silicone foam composition, comprising:

• a catalyst fluid comprising
• a first low viscosity vinyl terminated polydimethylsiloxane present in an amount of from about 97 wt % to about 99.5 wt % based on the weight of the catalyst fluid and having a viscosity of from about 1 to about 150 cPs, and
• a platinum divinyl disiloxane complex comprising Pt[(CH2═CH)(CH3)2SiOSi(CH3)2(CH═CH2)]3 having a platinum content of from about 2 ppm to about 32 ppm based on the catalyst fluid,
• wherein the catalyst fluid has a viscosity of from about 1 to about 150;
• and
• a cross-linker suspension comprising
• a second low viscosity vinyl terminated polydimethylsiloxane present in an amount of from about 1 wt % to about 40 wt % based on the weight of the cross-linker suspension and having a viscosity of from about 1 to about 150 cPs,
• a low viscosity hydride terminated polydimethylsiloxane present in an amount of from about 60 wt % to about 90 wt % based on the weight of the cross-linker suspension and having a viscosity of from about 1 to about 150 cPs,
• a silicone cross-linker comprising polymethylhydrosiloxane polydimethylsiloxane copolymer present in an amount of from about 0.32 wt % to about 5.0 wt % based on the weight of the cross-linker suspension, and having a viscosity of from about 1 to about 150 cPs, and
• a sterile gas or a population of gas-filled microcapsules,
• wherein the cross-linker suspension has a viscosity of from about 1 to about 150 cPs, and
• wherein, post-preparation, the resultant rapidly cross-linkable silicone foam composition has a viscosity of ≤150 cPs for ≥1 min. post-preparation and ≤300 cPs≤5 min. post-preparation, at ambient temperature, and the resultant rapidly cross-linkable silicone foam composition has a platinum content of from about 1 ppm to about 16 ppm.