US 9,809,786 B2
Rinse aid composition comprising a terpolmer of maleic, vinyl acetate and ethyl acrylate
Erik C. Olson, Savage, MN (US); and Carter M. Sivernail, Burnsville, MN (US)
Assigned to ECOLAB USE INC., Saint Paul, MN (US)
Filed by Ecolab USA Inc., St. Paul, MN (US)
Filed on Jan. 6, 2016, as Appl. No. 14/989,339.
Claims priority of provisional application 62/100,517, filed on Jan. 7, 2015.
Prior Publication US 2016/0194582 A1, Jul. 7, 2016
Int. Cl. C11D 1/72 (2006.01); C11D 1/722 (2006.01); C11D 1/825 (2006.01); C11D 3/37 (2006.01); B08B 3/04 (2006.01); C11D 1/00 (2006.01)
CPC C11D 3/3757 (2013.01) [C11D 1/72 (2013.01); C11D 1/825 (2013.01); C11D 3/3707 (2013.01); C11D 1/008 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rinse aid composition comprising:
a sheeting agent comprising one or more alcohol ethoxylates;
a defoamer component comprising a polymer compound including one or more ethylene oxide groups; and
a terpolymer of maleic, vinyl acetate, and ethyl acrylate monomers or alkali metal salts thereof, wherein the alcohol ethoxylate has a structure by the formula, R—O—(CH2CH2O)n—H, R is linear
or branched C8-C15 alkyl group, and n is 1 to 25;
the defoamer is a block copolymer having the formula (EO)x(PO)y(EO)x or (PO)y(EO)x(PO)y, wherein x is 1 to 130, and y is 5 to 70; and
the composition is a rinse aid composition, not a detergent or cleaning composition.