TECHNOLOGY FOCUS - POLYMERS - Preferred Method: The method-I further comprises forming one or more chemical bonds between the oxidized fatty component and the linker component, and providing one or more additives and combining the additives with the oxidized fatty component and the linker component. The (a) step comprises forming a chemical bond between the phase change material and the first linker component, and forming a gel. The method-II further comprises (g) providing a catalyst, (h) providing a blowing agent, and (i) providing an aqueous polymeric material. The (e) step comprises adding the catalyst to the first mixture and/or the second mixture, and adding a catalyst to the combination of the first and second mixtures. The (h) step comprises adding the blowing agent to the combination of the first and second mixtures. The (i) step comprises adding the aqueous polymeric material to the combination of the first and second mixtures. Preferred Composition: The composition: further comprises an ionic liquid, an aerogel, a polymeric material, and an additive dispersed in the latent heat storage material; is free of water; and has a solid-gel latent heat of at least 100 J/g. Preferred Components: The latent heat storage material: comprises the oxidized fatty component chemically bonded to a linker component, one or more A-B1-A trimers of two oxidized fatty components chemically bonded to a linker component, and a phase change material; and is free of water. The oxidized fatty component or phase change material: comprises fatty acid, fatty alcohol and/or alkyl ester of fatty acid; and is chemically bonded to the linker component through a urethane bond. The linker component comprises a diisocyanate. The first linker component or the second linker component comprises a polyfunctional isocyanate. The first linker component comprises a first polyfunctional isocyanate. The second linker component comprises a second polyfunctional isocyanate. The polyfunctional monomer comprises a polyol. The blowing agent comprises water. The latent heat storage capacity of the phase change material is fully or substantially fully utilized before combining the first and second mixtures. The one or more linker components are present in the mixture in an excess amount. The additive comprises one or more of an ionic liquid, aerogel and polymeric material. The foam comprises a polyurethane foam. EXAMPLE - Stearic acid (8 kg) and lauryl alcohol (1.6 kg) were added to a 10 gallon tank equipped with a mixer and heated at 75 degrees C. After 30 minutes of mixing, methylene diphenyl diisocyanate (0.4 kg) was added gradually, and mixing was continued for another 10 minutes to obtain a composition.