The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 1983
Filed:
Sep. 13, 1982
George A Lane, Midland, MI (US);
Harold E Rossow, Midland, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
A reversible liquid/solid phase change composition comprising a mixture of hydrated CaCl.sub.2 and a potassium salt whose anion forms a substantially less soluble salt with calcium and in which the potassium salt modifies the semi-congruently melting behavior of CaCl.sub.2.6H.sub.2 O to the extent that the mixture approaches congruent melting behavior. Preferred examples of such compositions are CaCl.sub.2 admixed with potassium sulfate, potassium carbonate or potassium phosphate. The composition preferably includes nucleating additives to modify and suppress the supercooling properties of the liquid phase of the composition. The composition is adapted to be incorporated into an encapsulating means for use as a heat storage device.