Abstract: The invention relates to the use of alkoxyhydroxy fatty acids and the salts thereof having the general formula (I) ##STR1## wherein R.sup.1 represents a straight chain alkyl radical or a straight chain alkenyl radical having from 6 to 8 carbon atoms,R.sup.2 represents a straight chain or branched chain alkyl radical having from 1 to 18 carbon atoms, or a straight chain or branched chain alkenyl radical having from 2 to 18 carbon atoms,M represents hydrogen or an organic ammonium radical having one or more alkyl radicals or hydroxy alkyl radical attached to the nitrogen atom, andm represents an integer having a value of from 3 to 13,in an amount of from 0.01 to 10% by weight, based on the weight of oil, as corrosion inhibitors in oils and oil-containing emulsions.

Abstract: A method for corrosion inhibition in oil or oil emulsions comprising adding thereto a corrosion-inhibition-effective amount of at least one salt corresponding to the general formula ##STR1## in which R.sup.1 is a linear or branched C.sub.8-36 alkyl or C.sub.8-36 alkenyl or a mono- or polyethoxylated C.sub.8-18 alkyl containing from 1 to 10 ethoxy groups,R.sup.2 is a linear or branched C.sub.10-20 alkyl andM is half an equivalent of a divalent metal which is magnesium, calcium, barium, or zinc.

Abstract: Stable oil-in-water emulsions containing more than 60% by weight of non-aqueous phase may be prepared using water-soluble salts of monoacyl cyanamides, of which the acyl radical contains from 10 to 20 carbon atoms, as emulsifiers. The monoacyl cyanamides of C.sub.12 -C.sub.18 fatty acids are preferably used in the form of their sodium salts. The oil-in-water emulsions preferably contain from 70 to 95% by weight of non-aqueous phase and from 0.1 to 3% by weight of emulsifier.

Abstract: Novel ethercarboxylic acids and their salts containing at least two carboxylic acids and at least one glycolic acid ether, useful as sequestering agents for alkaline earth metal ions, as well as a process for their preparation.

Abstract: Skin-care and skin-protection agents contain at least one polyethercarboxylic acid as a skin moisture-containing agent, and a process for treating skin comprises applying an effective amount of these agents to the skin.

Abstract: The present invention relates to a process for producing novel hydroxyether carboxylic acids and their salts containing at least one glycolic acid ether and at least two carboxylic acids as well as to these compounds per se.