Coated polyurethane foams
AssigneesDow Global Technologies LLC, Rohm and Haas Company
InventorsYasmin N. Srivastava, Thomas C. Fitzgibbons, Praveenkumar Boopalachandran, Daniel G. Abebe, Tian Lan, Yu Xindi
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Abstract
Articles useful for bedding and other comfort applications include a coated polyurethane foam. The coating includes an elastomeric polymer, a phase change material, a non-encapsulated wax and optionally a hydrophilic polymer. The coating provides desirable haptic properties, including a “cool touch” feature that creates a sensation of coolness when touched, and a highly smooth surface.
Claims10
An article comprising a flexible polyurethane foam and a cured coating adhered to at least one surface of the flexible polyurethane foam, the cured coating comprising, by total weight of the cured coating (i) 33 to 60 weight percent of a solid, water-insoluble elastomeric polymer, (ii) 38 to 50 weight percent of embedded particles of an encapsulated phase change material, wherein the phase change materials has a melting or glass transition temperature of 25 to 37° C., (iii) 0.5 to 5 weight percent of a non-encapsulated wax that has a melting temperature of at least 45° C., and (iv) 0 to 15 weight percent of a hydrophilic polymer that is a liquid at 23° C. and has a weight average molecular weight of 350 to 8000 g/mol.
Dependencies are inferred from the claim text.