SBR LATEX CORRESPONDING TO SILICATE ION AND SBR LATEX MATERIAL

摘要

PURPOSE:To obtain a cationic SBR latex suitable for prevention of collapse of earth and sand layers and of sand-scattering and a waterproofing primer by cationizing an anionic SBR latex having excellent connecting, film-forming and diluting properties for silicate ion existing in sand, etc. CONSTITUTION:An anionic SBR latex with a high molecular weight having excellent connecting, film-forming and diluting properties for silicate ion of sand or minerals containing elements similar to those in sand and containing no components hindering movement of rubber particles is adjusted to near 5//pH, e.g., using a dilute acid and cationized, e.g., by adding an alkylamine.ethylene oxide condensate thereto, thus obtaining a cationic SBR latex corresponding to silicate ion. In addition an economical latex material having an effect equal to that of the above-mentioned latex is provided by mixing the above-mentioned latex with a cationic asphalt emulsion or a petroleum resin emulsion.