The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 1997
Filed:
Jan. 25, 1996
William C Walsh, Archbold, OH (US);
Lawrence E James, Grosse Ile, MI (US);
BASF Corporation, Mt. Olive, NJ (US);
Abstract
Excess uncured paint is removed and reclaimed from a paint spray booth by bringing an air stream in which uncured paint particles are entrained into contact with a flowing aqueous flood sheet within the paint spray booth. A substantial portion of the uncured paint particles are solubilized within the flowing aqueous flood sheet and thereby removed from the stream of air. The flowing flood sheet most preferably includes (i) between about 10 to 45 percent by weight of an N-methyl pyrrolidone; (ii) between about 15 to about 40 percent by weight of at least one alkyl glycol ether having 1 to 4 carbon atoms in its alkyl moiety; and (iii) about 0.1 to about 2.0 percent by weight of a non-ionic linear alcohol ethoxylate surfactant sufficient to reduce the flood sheet vapor pressure. Thereafter, the solubilized uncured paint particles are separated and collected from the aqueous flood sheet and thereby reclaimed for future use.