Method for coating carriers, emulsion used therein, resulting coated materials, and devices for producing and laying coated materials

摘要

PCT No. PCT/FR96/00010 Sec. 371 Date Sep. 2, 1997 Sec. 102(e) Date Sep. 2, 1997 PCT Filed Jan. 3, 1996 PCT Pub. No. WO96/21686 PCT Pub. Date Jul. 18, 1996A process for the bituminous coating of any supports by providing a cold coating of the supports by bituminous emulsions, comprising first obtaining a hydrophobic powder of positive electric charge by the conjoint action of a metallic salt soluble in water and a long chain organic acid, then introducing this powder, either into a mass of the supports to be coated, or into a bituminous anionic emulsion and then mixing the supports and bituminous emulsion in a mixer so as to effect cold coating. An anionic emulsion is mixed with a hydrophobic powder of positive electric charge so as to confer on the emulsion a cationic behavior and coating and covering properties.