Back to results
US 5,208,074 AGranted
Soluble alkali metal stearate solution compositions
AssigneeDow Corning Corporation
InventorJeffrey A. Kosal
Life of this patent
Estimating the term…
Abstract
This invention relates to solutions of alkali metal stearates which remain soluble and stable at room temperature. In particular, the invention relates to an aqueous solution which includes an alkali metal stearate selected from the group consisting of sodium stearate and potassium stearate, and a water soluble nonionic surfactant. More particularly, the invention relates to a solution which when deposited on a substrate forms a stearate-surfactant lubricant layer upon removal of water. The solutions may be used in neat form or delivered as part of an emulsion.
Claims5
An aqueous alkali metal stearate solution comprising:
- 0.01-10.0 weight percent of an alkali metal stearate selected from the group consisting of sodium stearate, potassium stearate, and mixtures thereof;
- 0.01-20.0 weight percent of a water soluble nonionic surfactant having the formula C.sub.a H.sub.b (OCH.sub.2 CH.sub.2).sub.n OH in which a has a value of 11-15, b has a value of 23-31, and n has an average value of 4-10;
- and 70.0-99.98 weight percent of water;
- the surfactant being present in at least a 1:1 weight ratio with the alkali metal stearate;
- and an effective buffering amount of an electrolyte selected from the group consisting of sodium hydroxide, potassium hydroxide, and sodium borate;
- the pH of the solution being 6.5 or above.
3 more elements
Dependencies are inferred from the claim text.