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US 2013/0074875 A1Published application
Ware washing system containing cationic starch
AssigneeDiversey, Inc., part of Sealed Air
InventorsAntonius Maria Neplenbroek, Julie Jessica Beau, Florian Romain Marie Raphanel
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Abstract
The present invention discloses a method of washing ware, in particular in an automatic domestic or institutional ware washing machine, using a detergent composition containing a cationic starch. This eliminates the need for a surfactant in the rinse step. The cationic starch provides a layer of cationic starch on the ware so as to afford a sheeting action in an aqueous rinse step without any added rinse agent.
Claims20
1-14. (canceled)
A method of washing ware comprising:
- (a) contacting ware in a washing step with an aqueous cleaning composition in a ware washing machine, the aqueous cleaning composition comprising a major portion of an aqueous diluent and about 200 to 5000 parts by weight of a ware washing detergent per each one million parts of the aqueous diluent, wherein the ware washing detergent comprises a nonionic surfactant;
- and
- (b) contacting the washed ware in a rinse step with an aqueous rinse, the aqueous rinse being substantially free of an intentionally added rinse agent, characterized in that the aqueous cleaning composition contains a sufficient amount of a cationic starch to provide a layer of the cationic starch on the ware so as to afford sheeting action in the aqueous rinse step,
- wherein a weight ratio of the nonionic surfactant to the cationic starch in the aqueous cleaning composition is at most 0.25/1,
- further wherein the cationic starch contains a cationic group which is a quaternary ammonium group according to the formula
- wherein R1, R2, R3 and R4 each independently are a alkyl or a hydroxyalkyl group and further wherein the cationic group is connected to the starch via an ether or an ester linkage,
- further wherein the cationic starch is (3-Chloro-2-Hydroxypropyl)Trimethylammonium Chloride modified starch,
- and further wherein the ware washing detergent comprises a defoaming agent, a hydrotrope, or combinations thereof, wherein the defoaming agent, the hydrotrope and the nonionic surfactant are different compounds.
5 more elements
A method of washing ware comprising:
- (a) contacting ware in a washing step with an aqueous cleaning composition in a ware washing machine, the aqueous cleaning composition comprising a major portion of an aqueous diluent and about 200 to 5000 parts by weight of a ware washing detergent per each one million parts of the aqueous diluent, wherein the ware washing detergent comprises a nonionic surfactant;
- and
- (b) contacting the washed ware in a rinse step with an aqueous rinse, the aqueous rinse being substantially free of an intentionally added rinse agent, characterized in that the ware washing detergent further comprises a sufficient amount of a cationic starch to provide a layer of the cationic starch on the ware so as to afford sheeting action in the aqueous rinse step,
- wherein a weight ratio of the nonionic surfactant to the cationic starch in the ware washing detergent is at most 0.25/1,
- and further wherein the cationic starch provides a drying coefficient corresponding to a ratio of drying time using the ware washing detergent with the cationic starch to a drying time using the ware washing detergent without the cationic starch being at most 0.9, and/or corresponding to a ratio of a number of droplets after 5 minutes using the ware washing detergent with the cationic starch to a number of droplets after 5 minutes using the ware washing detergent without the cationic starch being at most 0.5,
- and further wherein the ware washing detergent comprises a defoaming agent, a hydrotrope, or combinations thereof, wherein the defoaming agent, the hydrotrope and the nonionic surfactant are different compounds.
3 more elements
A method of washing ware comprising:
- (a) contacting ware in a washing step with an aqueous cleaning composition in a ware washing machine, the aqueous cleaning composition comprising a major portion of an aqueous diluent and about 200 to 5000 parts by weight of a ware washing detergent per each one million parts of the aqueous diluent;
- and
- (b) contacting the washed ware in a rinse step with an aqueous rinse, the aqueous rinse being substantially free of an intentionally added rinse agent, characterized in that the aqueous cleaning composition contains a sufficient amount of a cationic starch to provide a layer of the cationic starch on the ware so as to afford sheeting action in the aqueous rinse step,
- wherein the aqueous cleaning composition does not contain a nonionic surfactant,
- and further wherein the ware washing detergent comprises a defoaming agent, a hydrotrope, or combinations thereof.
2 more elements
Dependencies are inferred from the claim text.