Aqueous rinse - aid composition comprising a two - component blend of alkoxylated nonionic surfactants
AssigneeBASF SE
InventorsMichael C. Welch, Kenneth L. Zack, Suzanne M. Gessner, Glenis Roberts
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AssigneeBASF SE
InventorsMichael C. Welch, Kenneth L. Zack, Suzanne M. Gessner, Glenis Roberts
Estimating the term…
An aqueous rinse-aid composition for kitchen utensils is provided wherein an anionic hydrotrope and a blend of two specifically defined nonionic surfactants are utilized which has been shown through empirical research to surprisingly yield improved results. One of the nonionic surfactants is an alcohol alkoxylate (as defined) and the other nonionic surfactant is a block copolymer of ethylene oxide and propylene oxide (as defined). The composition is suitable for use at a temperature of up to at least 180.degree. F. in the absence of excessive foaming, spotting and film formation. The components of the composition exhibit good compatibility during storage even if elevated temperatures are experienced thereby maintaining reliable performance upon usage. Rapid high velocity rinsing at a high temperature is made possible in the absence of deleterious foam generation to yield dishes and tableware that can be readily dried without the need for the time consuming hand removal of deleterious spots and/or film.
An aqueous rinse-aid composition suitable for use at a temperature of up to at least 180.degree. F. in the absence of excessive foaming, spotting and film formation consisting essentially of approximately 0.75 to 5 percent by weight of an anionic hydrotrope, and a blend of nonionic surfactants (i) and (ii) in a concentration of approximately 10 to 80 percent by weight, wherein (i) is an alcohol alkoxylate surfactant having a molecular weight of approximately 500 to 2,000 and the structural formula:
An aqueous rinse-aid composition suitable for use at a temperature of up to at least 180.degree. F. in the absence of excessive forming, spotting and film formation consisting essentially of approximately 2 to 3 percent by weight of sodium dihexyl sulfosuccinate hydrotrope, and a blend of nonionic surfactants (i) and (ii) in a concentration of approximately 20 percent by weight, wherein (i) is an alcohol alkoxylate surfactant having a cloud point of approximately 10.degree. to 20.degree. C., and a molecular weight of approximately 1,400 and the structural formula:
Dependencies are inferred from the claim text.