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Dry powder mixes comprising phase change materials

  • US 5,477,917 A
  • Filed: 09/29/1994
  • Issued: 12/26/1995
  • Est. Priority Date: 01/09/1990
  • Status: Expired due to Term
First Claim
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1. An enclosure for thermally protecting a heat sensitive item from high temperatures, said enclosure comprising:

  • a housing including an inner cavity for containing said heat sensitive item;

    an outer casing enclosing at least a portion of said housing, said outer casing and said portion of said housing defining a chamber therebetween; and

    a mixture of a phase change material and finely divided silica particles disposed within said chamber adjacent to said portion of said housing providing significant thermal protection for said heat sensitive item said phase change material selected from the group consisting of polar organic compounds that undergo a liquid-to-gas transition with high heat of vaporization and condensation, combinations thereof, and combinations of water and polar organic compounds that undergo a liquid-to-gas transition with high heat of vaporization and condensation.

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