Gloss emulsion paints require the use of thickening agents which give various properties such as water retention and rheological properties (film build, Brush-ability and levelling of the film). Usual thickeners in emulsion paints provide poor rheological properties, giving a bad film build and levelling or a poor compatibility with the various paint components, and a decrease of the gloss level due to the formation of a haze after drying. BR 100 P has been especially designed to solve these problems. It is suitable for the thickening of anionic and non-ionic emulsions and particularly with styrene-acrylics, vinyl-acrylics and other copolymers. Beside gloss emulsion paints, the main applications for BR 100 P are in semi-gloss, interior and exterior flat emulsion paints, in anti-corrosive paints, in adhesives.