Articles containing precisely branched functional polymeric phase change materials
First Claim
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1. A temperature regulating article comprising:
- a substrate; and
a 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.
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Abstract
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.
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Citations
25 Claims
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1. A temperature regulating article comprising:
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a substrate; and a 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A temperature regulating composition, comprising:
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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. - View Dependent Claims (17, 18, 19, 20)
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21. A temperature regulating composition, comprising:
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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. - View Dependent Claims (22, 23, 24, 25)
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Specification