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Abstract

Provided are a latent heat storage material that functions as a high-capacity heat storage material at a medium-to-low temperature region using a latent heat storage material composition including at least one kind of n-paraffin having 14 to 18 carbon atoms in a total amount of 100 parts by mass (hereinafter referred to as “n-paraffin-based latent heat storage material composition”) that contains, as a supercooling preventing agent, an n-alkyl alcohol and/or an n-alkyl amine having 20 to 24 carbon atoms (hereinafter referred to as “n-paraffin derivative”), and is obtained by the following a) step and b) step, a microcapsule heat storage material containing the latent heat storage material as a core material, and a method for producing the same.

a) A step of melting and homogenizing the n-paraffin derivative and the n-paraffin-based latent heat storage material composition at a temperature range of 50 to 100° C.b) A step of cooling the homogeneous solution obtained in the step to precipitate the n-paraffin derivative in the n-paraffin-based latent heat storage material.

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First Claim