Dry powder mixes comprising phase change materials

Details Dry powder mixes comprising phase change materials Dry powder mixes comprising phase change materials

1990-01-09

1992-04-21

Lilling, Herbert J.

Compositions

Frost-preventing, ice-thawing, thermostatic, thermophoric,...

252 69, 428402, 428403, 524 5, 524 8, 524493, C08K 501, C09K 318, C09K 506

Patent

active

051065207

ABSTRACT:
Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7.times.10.sup.-3 to about 7.times.10.sup.-2 microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

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