| US 7,537,814 B2 | ||
| Alloy blends of polyurethane and latex rubber | ||
| Edwin L. McInnis, Zachary, La. (US); Donald Allan Sandusky, Landenberg, Pa. (US); and Daniel Campos, Atglen, Pa. (US) | ||
| Assigned to Invista North America S.A.R.L., Wilmington, Del. (US) | ||
| Filed on Feb. 18, 2008, as Appl. No. 12/32,923. | ||
| Application 12/032923 is a division of application No. 10/949381, filed on Sep. 27, 2004, granted, now 7,361,707. | ||
| Prior Publication US 2008/0214339 A1, Sep. 04, 2008 | ||
| Int. Cl. A63B 41/02 (2006.01); C09D 7/02 (2006.01); C09D 175/14 (2006.01); C08L 75/14 (2006.01) | ||
| U.S. Cl. 428—36.8 [428/35.2; 428/35.7; 473/604; 152/511; 525/127; 525/130] | 27 Claims |
| 9. An inflatable article comprising a film made from a formulation comprising an aqueous dispersion; the aqueous dispersion
comprising
an unsaturated polyurethane, at least a portion of which comprises at least one anionic, cationic, allyl, or vinyl group;
and
latex comprising an elastomeric polymer; the unsaturated groups of the polyurethane being capable of chemically bonding with the latex; wherein the film has an air
permeability not greater than 3.5×10−5 cm3 cm/m2 hour Pa at 25° C. wherein said air permeability is calculated as:
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