Hydrated Mg(NO.sub.3).sub.2 /NH.sub.4 NO.sub.3 reversible phase change compositions
AssigneeThe Dow Chemical Company
InventorsGeorge A. Lane, Harold E. Rossow
Life of this patent
Estimating the term…
Abstract
A reversible liquid solid phase change composition comprising Mg(NO.sub.3).sub.2.6H.sub.2 O/NH.sub.4 NO.sub.3, and one of the group of MgO, CaO, Mg(OH).sub.2, and/or Ca(OH).sub.2, added to the composition in an effective amount to suppress supercooling of the Mg(NO.sub.3).sub.2.6H.sub.2 O/NH.sub.4 NO.sub.3 liquid phase.
Claims13
A reversible liquid/solid phase change composition comprising hydrated Mg(NO.sub.3).sub.2 /NH.sub.4 NO.sub.3, and as a nucleator, one or more of MgO, CaO, Mg(OH).sub.2, or Ca(OH).sub.2, added to the composition in an amount effective to suppress average supercooling of the hydrated Mg(NO.sub.3).sub.2 /NH.sub.4 NO.sub.3 liquid phase to about 2.degree. C. or less.
A method of preparing a hydrated Mg(NO.sub.3).sub.2 /NH.sub.4 NO.sub.3 liquid/solid phase change composition of suppressed supercooling properties, comprising admixing uniformly in such composition, one or more of MgO, CaO, Mg(OH).sub.2, or Ca(OH).sub.2, in an amount effective to suppress average supercooling of the hydrated Mg(NO.sub.3).sub.2 /NH.sub.4 NO.sub.3 liquid phase to about 2.degree. C. or less.
Dependencies are inferred from the claim text.