GREASE FOR METAL MOULDS Russian patent published in 1999 - IPC

FIELD: industry of building materials, in particular, greases for moulds at production of concrete and reinforced-concrete products. SUBSTANCE: grease includes waste motor or machine oil, emulsifier - saponified tall pitch, additive-sulfuric acid and water, in addition, it contains as a mineral filler-milled chalk at the following relation of components, mass %: waste motor or machine oil - 20 to 30; saponified tall pitch - 2.0 to 3.0; sulfuric acid - 0.1 to 0.3, chalk - 1.0 to 2.0; water - the rest. EFFECT: enhanced quality of surface of products, prevented corrosion of metal moulds, reduced cost.