Basf Wyandotte Corporation

Clyde G Inks

John W Compton

Lee H Bergman

Edward T Parker

Kathryn M Ellerman

The strength of ice is reduced by dissolving in water prior to freezing a composition of (A) a water-soluble polyhydroxy compound or monoalkylether thereof and (B) an alkali metal carbonate in an amount to provide an effective amount of (A) plus (B). The method is especially useful for application to particulate solids, such as coal and mineral ores, which are shipped and stored in masses exposed to freezing temperatures. Any ice that is formed is physically weak and will not deter the unloading of the thusly conditioned particulate solids.

Freeze modification agent

The output of an oil well is improved by supplying thereto an acidizing-gel composition which consists essentially of, for example, about 15 weight percent of hydrochloric acid, about 20 weight percent of a suitable nonionic gel-forming surfactant containing oxyethylene and oxypropylene units, a corrosion inhibitor to the extent needed, and the balance water. The polymer is of high molecular weight, and though the composition containing such polymer is fluid at the temperature prevailing at the surface, nevertheless it forms a gel at the relatively higher temperatures present in the oil-bearing rock formation under the ground. This makes it possible to exert increased pressure on the oil-bearing rock formation, and it contributes to the effectiveness of the acidizing treatment.

Acidizing-gel composition

Printed waste cellulosic stock can be efficiently deinked by pulping the stock in the presence of based on the weight of the stock from 0.5 to 2% by weight of an alkali metal hydroxide and from 0.3 to 0.7% by weight of certain phosphate mono and diesters anionic surfactants.

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Taylor, MI, United States of America

Clyde G Inks