METHOD OF PREPARATION OF ADHESIVE PRIMING COMPOSITION Russian patent published in 1999 - IPC

FIELD: methods of preparation of adhesive priming composition based on butyl rubber. SUBSTANCE: method includes preparation of solid substance of composition from butyl rubber and filler in form of engineering carbon by their mixing in rubber mixer, dissolving of solid substance and additives imparting gluing and modifying properties in glue mixer in organic solvent. Method is distinguished by the fact that in preparation of solid substance of composition, aluminum is additionally introduced; with the following amounts of composition components, wt.%: butyl rubber 50-60; engineering carbon 10-20; aluminum hydroxide 20-40. Components are mixed at temperature of 210-220 C. EFFECT: high adhesive properties of composition with respect to steel surface, to steel surface after ageing in water and resistance to cathode exfoliation. 1 tbl