Abstract: The present invention provides a phase change material composition comprising an ester of a linear alcohol which has at least 4 carbon atoms and a linear carboxylic acid which has at least 4 carbon atoms, wherein the total number of carbon atoms in the ester is in the range from 13 to 31. The invention also provides products including the phase change material composition and methods of regulating temperature.

Abstract: The present invention relates to microcapsules comprising a core within a polymeric shell, wherein the polymeric shell comprises a copolymer formed from 50 to 99.9%, by weight of the polymeric shell, of a first shell monomer which is ethylenically unsaturated and which has more than one ethylenic double bond; 0.01 to 50%, by weight of the polymeric shell, of a second shell monomer which is ethylenically unsaturated and which has one ethylenic double bond; and optionally, 0 to 30%, by weight of the polymeric shell, of one or more other shell monomers. The core of the microcapsules comprises an active substance, particularly a phase change material (PCM). The polymeric shell forms less than 8 wt % of the total weight of the microcapsules.

Abstract: The present invention provides a phase change material composition comprising an ester of a linear alcohol which has at least 4 carbon atoms and a linear carboxylic acid which has at least 4 carbon atoms, wherein the total number of carbon atoms in the ester is in the range from 13 to 31. The invention also provides products including the phase change material composition and methods of regulating temperature.