Dry water

Details Dry water Dry water

1975-11-28

1977-02-15

Lovering, Richard D.

Compositions

Humidostatic, water removive, bindive, or emissive

252 2, 252 69, 252449, C09K 300

Patent

active

040081702

ABSTRACT:
A submicroscopic particulate silica having a particle size range from about 5-20 m.mu. that is prepared in a hot gaseous environment at about 1100.degree. C by the vapor phase hydrolysis of a silicon compound is reacted with liquid water in a ratio in weight percent of about 1 part water to about 9 parts water to 1 part of the particulate silica to yield a powdered product which remains flowable over a wide temperature range -- even when cooled to an extremely low temperature of -196.degree. C. The adsorbed water is liberated on heating the powdered product. The powdered product with adsorbed water up to about 90 weight percent has utility as a coolant by liberating water on heating. The powdered product is useful as moisture source for miscellaneous purposes over a wide temperature range.

REFERENCES:
patent: 2990249 (1961-06-01), Wagner
patent: 3103495 (1963-09-01), Wagner et al.
patent: 3393155 (1968-07-01), Schutte et al.
patent: 3607777 (1971-09-01), Winyall et al.

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