Time-delayed activation of zeolite heating
AssigneeHoneywell International Inc.
InventorsMark R. Wheeler, Milton E. McDonnell, Maria M. Higuera, Michael Jablon, Richard B. Heath, Lee R. Mores
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Abstract
The invention relates to zeolite particles which are at least partially coated with a coating that is capable of delaying the release of heat from the zeolite particles upon contact with water over time. The coating effectively at least partially blocks the pore structure of the zeolite particle from contact with water, thereby delaying contact between water and the zeolite, and prolonging the warming effect caused by such contact.
Claims20
A time-delayed heat-release coated zeolite particle comprising a zeolite particle at least partially coated with a coating comprising a mixture of:
- a) at least one water-soluble component which is at least partially soluble in water at temperatures of from about 15° C. to about 25° C.;
- and
- b) at least one water-insoluble component which is substantially insoluble in water at temperatures of from about 15° C. to about 25° C.;
- wherein the coating has a melting temperature of from about 45° C. to about 120° C., and wherein the coating is capable of dissolving in water at temperatures of from about 15° C. and 25° C. in an amount sufficient to at least partially expose the zeolite particle to the water.
Dependencies are inferred from the claim text.