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1. WO2002024830 - STABLE PHASE CHANGE MATERIALS FOR USE IN TEMPERATURE REGULATING SYNTHETIC FIBERS, FABRICS AND TEXTILES

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[ EN ]

What is claimed is:

1. A stabilized phase change composition comprising:
a phase change material; and
a stabilizing agent selected from the group consisting of antioxidants and thermal stabilizers.

2. The phase change composition of claim 1, wherein the phase change material is selected from the group consisting of hydrocarbons, waxes, oils, fatty acids, fatty acid esters, dibasic acids, dibasic esters, 1-halides, primary alcohols, aromatic compounds, stearic anhydride, ethylene carbonate, polyhydric alcohols, polymers, and mixtures thereof.

3. The phase change composition of claim 1, wherein the stabilizing agent is an antioxidant selected from the group consisting of phenolic antioxidants and thioether antioxidants.

4. The phase change composition of claim 1, wherein the stabilizing agent is a thermal stabilizer selected from the group consisting of phosphites and phosphonites.

5. The phase change composition of claim 1, comprising from about 0.01 percent to about 10 percent by weight of the stabilizing agent.

6. The phase change composition of claim 1, comprising from about 0.02 percent to about 1 percent by weight of the stabilizing agent.

7. The phase change composition of claim 1, wherein the stabilizing agent is an antioxidant, and wherein the phase change composition further comprises a thermal stabilizer.

8. An encapsulated phase change material comprising:
a hollow shell defining an internal cavity; and
a phase change composition positioned in the internal cavity, wherein the phase change composition comprises a phase change material and a stabilizing agent selected from the group consisting of antioxidants and thermal stabilizers.

9. The encapsulated phase change material of claim 8, wherein the hollow shell has a maximum linear dimension less than 100 microns.

10. The encapsulated phase change material of claim 8, wherein the phase change material is a hydrocarbon or a mixture of hydrocarbons.

11. The encapsulated phase change material of claim 8, wherein the stabilizing agent is a sterically hindered phenolic antioxidant.

12. The encapsulated phase change material of claim 8, wherein the stabilizing agent is a phosphite.

13. An encapsulated phase change material comprising:
a hollow shell defining an internal cavity, wherein the hollow shell comprises a base material and a stabilizing agent dispersed within the base material, and wherein the stabilizing agent is selected from the group consisting of antioxidants and thermal stabilizers; and
a phase change material positioned in the internal cavity.

14. The encapsulated phase change material of claim 13, wherein the stabilizing agent is an antioxidant selected from the group consisting of phenolic antioxidants and thioether antioxidants.

15. The encapsulated phase change material of claim 13, wherem the stabilizing agent is a thermal stabilizer selected from the group consisting of phosphites and phosphonites.

16. The encapsulated phase change material of claim 13, wherein the hollow shell comprises from about 0.01 percent to about 10 percent by weight of the stabilizing agent.

17. The encapsulated phase change material of claim 13, wherein the stabilizing agent is an antioxidant, and wherein the hollow shell further comprises a thermal stabilizer dispersed within the base material.

18. The encapsulated phase change material of claim 13, wherein the base material is a polymeric material.

19. The encapsulated phase change material of claim 13 , wherein the phase change material is a hydrocarbon or a mixture of hydrocarbons.

20. The encapsulated phase change material of claim 13, wherein the stabilizing agent is a first stabilizing agent, wherein the encapsulated phase change material further comprises a second stabilizing agent positioned in the internal cavity, and wherein the second stabilizing agent is selected from the group consisting of antioxidants and thermal stabilizers.