초록 ▼

Extended period cooling packs are provided by employing reaction mixtures of coated particulate matter and a liquid reactant, where the liquid reactant reacts with the particulate matter in an endothermic reaction. The coating acts to slow the rate of reaction between the reactants, so as to extend

Extended period cooling packs are provided by employing reaction mixtures of coated particulate matter and a liquid reactant, where the liquid reactant reacts with the particulate matter in an endothermic reaction. The coating acts to slow the rate of reaction between the reactants, so as to extend the period of cooling.

대표청구항 ▼

An extended lifetime cold pack comprising: a container having first and second compartments separated by a barrier capable of being opened to provide communication between said first and second compartments: said first compartment containing solid reactant particles coated with a reaction delaying p

An extended lifetime cold pack comprising: a container having first and second compartments separated by a barrier capable of being opened to provide communication between said first and second compartments: said first compartment containing solid reactant particles coated with a reaction delaying penetrable coating, said coating being at least partially soluble or swellable in a liquid reactant; and said second compartment containing said liquid reactant which reacts with said solid reactant in an endothermic reaction.