A temperature regulating article comprises a substrate and a polymeric phase change material bound to the substrate, wherein the polymeric phase change material is characterized by including a precisely branched polymer with substantially equally spaced repeating sidechains. In other embodiments the
A temperature regulating article comprises a substrate and a polymeric phase change material bound to the substrate, wherein the polymeric phase change material is characterized by including a precisely branched polymer with substantially equally spaced repeating sidechains. In other embodiments the polymeric phase change material includes between 20 and 200 branches per 1000 carbon units, has a latent heat of at least 5 Joules per gram, and a transition temperature between 0° C. and 40° C.
대표청구항▼
1. A temperature regulating article comprising: a substrate; anda temperature regulating composition bound to the substrate; wherein the temperature regulating composition comprisesa polymeric phase change material bound to the substrate, wherein the polymeric phase change material includes a branch
1. A temperature regulating article comprising: a substrate; anda temperature regulating composition bound to the substrate; wherein the temperature regulating composition comprisesa polymeric phase change material bound to the substrate, wherein the polymeric phase change material includes a branched polymer with equally spaced repeating sidechains each separated by at least three carbon backbone atoms, wherein the number of carbon backbone atoms between sidechains controls a degree of crystallization of the polymeric phase change material at a given transition temperature, wherein the polymeric phase change material includes between 20 and 200 branches per 1000 carbon atoms,wherein the polymeric phase change material has a latent heat of at least 5 Joules per gram and a transition temperature between 0° C. and 40° C. dependent upon the number of carbon backbone atoms between sidechains, andwherein the sidechains are selected from the group consisting of CH3, C2H5, CnH2n+1, OCH3, and OC2H5. 2. The temperature regulating article of claim 1, wherein the polymeric phase change material includes a mole percentage of the branches of between 4% and 50%. 3. The temperature regulating article of claim 1, wherein the polymeric phase change material includes a weight percentage of the branches of between 5% and 50%. 4. The temperature regulating article of claim 1, wherein the polymeric phase change material includes between 20 and 45 branch units per 1000 carbon atoms. 5. The temperature regulating article of claim 1, wherein the branches are methyl branches derived from propylene as the comonomer. 6. The temperature regulating article of claim 5, wherein the propylene is 20-30 mole percentage of the polymer. 7. The temperature regulating article of claim 5, wherein propylene is between 27-39 weight percentage of the polymer. 8. The temperature regulating article of claim 1, wherein at least one of the branches are selected from the group consisting of CH3 and a functional group. 9. The temperature regulating article of claim 1, wherein at least one of the branches are selected from the group consisting of a functional group, a polar group, a halogen group, a salt, a metal, a catalyst end, and a crosslinking group. 10. The temperature regulating article of claim 1, wherein at least one of the branches have a degree of stereocontrol associated with them. 11. The temperature regulating article of claim 1, wherein at least one of the branches is controlled for chirality to yield L-chiral homo and copolymers. 12. The temperature regulating article of claim 1, wherein the polymer has a degree of unsaturation. 13. The temperature regulating article of claim 12, wherein the unsaturation is between 1-99 mole percentage. 14. The temperature regulating article of claim 1, wherein the polymer includes double bonded atoms. 15. The temperature regulating article of claim 1, wherein the substrate is selected from the group consisting of a fiber composition, a film composition, a laminated film composition and a coating composition. 16. A temperature regulating composition, comprising: a polymeric phase change material, wherein the polymeric phase change material includes a branched polymer with equally spaced repeating sidechains each separated by at least three carbon backbone atoms, wherein the number of carbon backbone atoms between sidechains controls a degree of crystallization of the polymeric phase change material at a given transition temperature, wherein the polymeric phase change material includes between 20 and 200 branches per 1000 carbon atoms,wherein the polymeric phase change material has a latent heat of at least 5 Joules per gram and a transition temperature between 0° C. and 40° C. dependent upon the number of carbon backbone atoms between sidechains, andwherein the sidechains are selected from the group consisting of CH3, C2H5, CnH2n+1, OCH3, and OC2H5. 17. The temperature regulating article of claim 16, wherein the polymeric phase change material includes a mole percentage of the branches of between 4% and 50%. 18. The temperature regulating article of claim 16, wherein the polymeric phase change material includes a weight percentage of the branches of between 5% and 50%. 19. The temperature regulating article of claim 16, wherein the polymeric phase change material includes between 20 and 45 branch units per 1000 carbon atoms. 20. The temperature regulating article of claim 16, wherein the branches are methyl branches derived from propylene as a comonomer. 21. A temperature regulating composition, comprising: a polymeric phase change material, wherein the polymeric phase change material includes a branched polymer with equally spaced repeating sidechains each separated by at least three carbon backbone atoms, wherein the number of carbon backbone atoms between sidechains controls a degree of crystallization of the polymeric phase change material at a given transition temperature, wherein the polymeric phase change material includes between 20 and 200 branches per 1000 carbon atoms,wherein the polymeric phase change material has a latent heat of at least 5 Joules per gram and a transition temperature between 0° C. and 100° C. dependent upon the number of carbon backbone atoms between sidechains, andwherein the sidechains are selected from the group consisting of CH3, C2H5, CnH2n+1, OCH3, and OC2H5. 22. The temperature regulating article of claim 21, wherein the polymeric phase change material includes a mole percentage of the branches of between 4% and 50%. 23. The temperature regulating article of claim 21, wherein the polymeric phase change material includes a weight percentage of the branches of between 5% and 50%. 24. The temperature regulating article of claim 21, wherein the polymeric phase change material includes between 20 and 45 branch units per 1000 carbon atoms. 25. The temperature regulating article of claim 21, wherein the branches are methyl branches derived from propylene as a comonomer.
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