XL-600 has big molecular weight and appropriate molecular weight distribution. The purity of polymer membrane is high and weather resistance is also very good. Because of grafting organosilicon monomer, it has excellent water resistance, wall surface alkali burnout resistance and adhesion. Besides, the emulsion has good chemical stability, storage stability, freeze-thaw stability and good compatibility with different additives especially pigment which is beneficial to compound emulsion paint and match color.