Method for removing and reclaiming excess uncured paint from a p

Details Method for removing and reclaiming excess uncured paint from a p Method for removing and reclaiming excess uncured paint from a p

1996-01-25

1997-06-24

El-Arini, Zeinab

Cleaning and liquid contact with solids

Processes

Paints, varnishes, lacquers, or enamels, removal

134 10, B08B 500, B01D 4702, C09D 904, C11D 750

Patent

active

056413610

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.

REFERENCES:
patent: 4836950 (1989-06-01), Madsen et al.
patent: 5006279 (1991-04-01), Grobbel et al.
patent: 5015410 (1991-05-01), Sullivan
patent: 5024780 (1991-06-01), Leys
patent: 5035829 (1991-07-01), Suwala
patent: 5098450 (1992-03-01), Patzelt et al.
patent: 5124062 (1992-06-01), Stevens
patent: 5188675 (1993-02-01), Bradsford
patent: 5334255 (1994-08-01), James et al.
patent: 5466300 (1995-11-01), Walsh et al.
McCutcheon's Emulsifiers & Detergents, North American Edition 1982, p. 202.

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