Fabric coating containing energy absorbing phase change material and method of manufacturing same
AssigneesOutlast Technologies, Inc., R. H. Wyner Associates, Inc.
InventorsJoseph L. Zuckerman, Robert J. Pushaw, Bernard T. Perry, Daniel M. Wyner
Life of this patent
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Abstract
A coating composition for fabrics includes wetted microspheres containing a phase change material dispersed throughout a polymer binder, a surfactant, a dispersant, an antifoam agent and a thickener. Preferred phase change materials include paraffinic hydrocarbons. The microspheres may be microencapsulated. To prepare the coating composition, microspheres containing phase change material are wetted and dispersed in a dispersion in a water solution containing a surfactant, a dispersant, an antifoam agent and a polymer mixture. The coating is then applied to a fabric.
Claims5
A method of manufacturing a coating composition for use in coating a fabric comprising the steps of:
- mixing water, a surfactant, a dispersant, microspheres containing a phase change material, and a thickener to produce a mixture;
- dispersing said microspheres throughout said mixture to produce a first dispersion;
- adding an antifoam agent to said first dispersion to dissipate foam from said first dispersion;
- mixing a polymer latex, a surfactant, a dispersant, a thickener and an antifoam agent to form a second dispersion;
- and
- mixing said second dispersion with said first dispersion to produce said coating composition.
A method of manufacturing a coating composition comprising the steps of:
- mixing a polymer latex, a surfactant and a dispersant to obtain a first mixture;
- adding wet microspheres that contain at least 25% by weight of water and a phase change material to the first mixture to obtain a second mixture;
- dispersing the wet microspheres throughout the second mixture to obtain a dispersion;
- mixing the dispersion with an antifoam agent and a thickener to form a third mixture that is defoamed and thickened;
- and
- adding a base to the third mixture to create said coating composition.
Dependencies are inferred from the claim text.