| US 7,521,502 B2 | ||
| Low foaming PVOH aerosol spray coatings | ||
| Georgia Lynn Lambert, La Porte, Tex. (US); Darin Michael Palmer, Lewisville, Tex. (US); Eduardo Nochebuena-Romero, Pearland, Tex. (US); Richard Vicari, Pearland, Tex. (US); and Arnold Ybarra, League City, Tex. (US) | ||
| Assigned to Celanese International Corporation, Dallas, Tex. (US) | ||
| Filed on Feb. 21, 2006, as Appl. No. 11/358,255. | ||
| Prior Publication US 2007/0208120 A1, Sep. 06, 2007 | ||
| Int. Cl. C08L 29/04 (2006.01) | ||
| U.S. Cl. 524—503 [524/287; 524/379] | 17 Claims |
| 1. In an aerosol composition suitable for coating automobile exteriors, where the aerosol composition is pressurized in a
container with a propellant, the improvement being that said aerosol composition includes water, an organic solvent, and a
polyvinyl alcohol composition, the polyvinyl alcohol composition comprising:
(a) from 50 to 99 wt % based on the total amount of polyvinyl alcohol resin present, of a partially hydrolyzed first polyvinyl
alcohol resin having a degree of hydrolysis in the range of from about 80 to about 90 percent; and
(b) from 1 to 50 wt % based on the total amount of polyvinyl alcohol resin present, of a second polyvinyl alcohol resin selected
from the group consisting of a polyvinyl alcohol resin having a degree of hydrolysis in the range from 91 percent to 95 percent,
and a polyvinyl alcohol resin having a degree of hydrolysis in the range from 95 to 99.5 percent;
wherein the organic solvent is miscible with water, and wherein the organic solvent has a boiling point in the range from
60° C. to 100° C.
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