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US 4,062,814 AGranted
Low-foaming cold-water glasswashing detergent
AssigneeBASF Wyandotte Corporation
InventorGregory Blair Hansen
Life of this patent
Estimating the term…
Abstract
A composition affording satisfactory performance in commercial glassware-cleaning equipment, operating with room-temperature water, is obtained with a composition containing not only a satisfactory proportion of caustic but also a very low-foaming nonionic surfactant and, as a solubilizer for such surfactant, a cycloaliphatic C.sub.21 dicarboxylic acid or one of its alkali-metal or ammonium salts.
Claims14
A composition consisting essentially of
- 1. a small amount, effective to promote detergency and sheeting action, of a hydrophobic nonionic surfactant, said nonionic surfactant being a block copolymer of ethylene diamine reacted first with propylene oxide to an average molecular weight of the oxypropylene hydrophobe of 5500 to 7000 and then with ethylene oxide to an extent such that oxyethylene units constitute about 8 to 12 percent of the weight of the average molecule of such copolymer,
- 2. an effectively solubility-promoting amount of a solubilizing compound having the formula ##STR3## wherein M is independently an ion selected from the group consisting of hydrogen, sodium, potassium, and ammonium,
- 3. 5 to 30 weight percent of alkali-metal hydroxide selected from the group consisting of sodium hydroxide, potassium hydroxide, and mixtures thereof but not more than 20 weight percent of sodium hydroxide, and
- 4. water.
1 more element
Dependencies are inferred from the claim text.