Release agents for hydraulic binders

A release agent for hydraulic binders, comprising:

• from 85 to 45% by weight of water,
• a component consisting essentially of at least one water-immiscible monohydric alcohol, liquid at temperatures of 5.degree. to 15.degree. C., selected from the group consisting of unsaturated fatty alcohols containing 12 to 22 carbon atoms and having an iodine value of 40 to 170, Guerbet alcohols containing 16 to 28 carbon atoms, oxoalcohols containing 8 to 15 carbon atoms, and saturated alcohols containing 6 to 10 carbon atoms,
• 0.5 to 5% by weight of an emulsifier, based on the component, and
• a rustproofing agent selected from the group consisting of amines, alkanolamines, fatty acid salts, salts or acidic phosphoric acid esters, phosphoric acid salts and amides of fatty acids in a quantity of 0.01 to 2% by weight based on the component.