Compared with cellulose and acrylic thickeners, it can provide the system better fluidity, excellent film-forming and leveling as well as water resistance and gloss. Its rolling coating has no splash and its use is not affected by the pH value of the system. It has strong resistance to biodegradation. This product has strong associative property with fast dissolution speed. It can improve the leveling and hiding power of the product and has good thickening effect. Meanwhile, it can improve scrub resistance without effect on product gloss. It can impart pseudoplastic rheological properties to the thickening system, and, it can get relatively high viscosity under low shear force, so it is not easy to sag and has good brushing performance, which made it especially suitable for systems with high requirements for leveling and thickening. This product has excellent pigment wettability and good UV stability and it is a environment friendly product with tin-free, toluene-free and non-toxic.