Inorganic salt in hydrogel with cross-linked acidic polymer...

C - Chemistry – Metallurgy – 09 – K

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C09K 5/00 (2006.01) C09K 5/06 (2006.01)

Patent

CA 1103454

\ Thermal energy storage materials Abstract of the Disclosure A thermal energy storage material comprising at least one hydrated inorganic salt having a transition temperature to the anhydrous or a less hydrated form in the range 10° to 100° C (for example, sodium sulphate decahydrate), the salt being dispersed and suspended in a water-insoluble hydrogel formed from a water-soluble synthetic polymer having pendant carboxylic or sulphonic acid groups cross-linked with cations of a polyvalent metal (for example, aluminium or magnesium).

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