METHOD FOR PRODUCTION OF POLYMER COMPOSITION FOR PROTECTIVE COATING OF CONCRETE STRUCTURES Russian patent published in 1995 - IPC

FIELD: protection and repair of moistened concrete and reinforced concrete building structures. SUBSTANCE: method for production of polymer composition for protective coating of concrete structures includes mixing of 70 p. of product of condensation of still bottoms of furfural production and acetone in ratio of 2:1 with 30 p. of epoxy diane resin, thoroughly stirring and adding 50-70 p. of liquid butadiene-nitrile rubber; heating of mixture at 60-80 C for 2-4 h; cooling and, prior to application, introduction into mixture of polyethylene-polyamine in the amount of 25-30 p. of component mixture mass. Characteristics: adhesion strength to wet concrete 1.4 MPa; bending elasticity 10 mm. EFFECT: higher efficiency. 2 tbl