Rinse aid formulation for cleaning automotive parts
AssigneeEcolab USA Inc.
InventorsAlissa Ellingson, Janel Marie Kieffer
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Abstract
Hard surface rinse aid compositions incorporating surfactant systems compatible with plastics and plastics containing metals, such as aluminum, are disclosed. The hard surface rinse aid compositions are particularly well suited for use in high concentrations at low temperatures without causing foaming and/or debris or film on the treated surface. In particular, the plastic and aluminum-compatible hard surface rinse aid compositions containing a surfactant system combining nonionic alcohol alkoxylates and a polymer surfactant can be used in treating hard surfaces requiring good sheeting, wetting and drying properties. The methods are particularly well suited for rinsing automotive parts, including those needing painting.
Claims20
A hard surface rinse aid composition comprising:
- (A) a nonionic alcohol alkoxylate surfactant according to the formula (I):
- R1—O-(EO)x1(PO)y1—H (I)
- wherein R1 is a straight-chain C10-C16 alkyl, wherein x1 is from 4 to 8, and wherein y1 is from 2 to 5;
- (B) a nonionic alcohol alkoxylate surfactant according to the formula (II):
- R2—O-(EO)x2—H (II)
- wherein R2 is C10-C14 alkyl with an average of at least 2 branches per residue, and wherein x2 is from 5 to 10;
- (C) a reverse block co-polymer surfactant according to the formula (III):
- wherein x is from 15-25, y is from 10 to 25, and z is from 15 to 25;
- (D) an acidic preservative composition comprising an anionic hydrotrope and an aluminum compatible preservative;
- and
- (E) water, wherein the ratio (on a weight percent basis) of the anionic hydrotrope to water is from about 0.1:1 to about 0.5:1, wherein a use solution of the composition comprises at least 1 wt-% of the composition and has a pH between about 4 to about 7 and is free of a detergent alkalinity source.
A hard surface rinse aid composition comprising:
- (A) from about 0.5 wt-% to about 5 wt-% of a nonionic alcohol alkoxylate surfactant according to the formula (I):
- R1—O-(EO)x1(PO)y1—H (I)
- wherein R1 is a straight-chain C10-C16 alkyl, wherein x1 is from 4 to 8, and wherein y1 is from 2 to 5;
- (B) from about 0.5 wt-% to about 5 wt-% of a nonionic alcohol alkoxylate surfactant according to the formula (II):
- R2—O-(EO)x2—H (II)
- wherein R2 is C10-C14 alkyl with an average of at least 2 branches per residue, and wherein x2 is from 5 to 10;
- (C) from about 5 wt-% to about 25 wt-% of a polymer surfactant according to the formula (III):
- wherein x is from 15-25, y is from 10 to 25, and z is from 15 to 25;
- (D) an acidic preservative composition comprising from about 10 wt-% to about 40 wt-% of an anionic hydrotrope and from about 0.01 wt-% to about 5 wt-% of an acid preservative and an optional additional aluminum compatible preservative;
- and
- (E) water, wherein the ratio (on a weight percent basis) of the anionic hydrotrope to water is from about 0.1:1 to about 0.5:1, wherein a use solution of the composition comprises between about 1-3 wt-% of the composition and has a pH between about 4 to about 7 and is free of a detergent alkalinity source.
Dependencies are inferred from the claim text.