Grupo RB’s saponified rosins are disproportionated gum rosins formed via catalytic processes that provide resistance to oxidation. These rosins are used as additives in building and construction applications to decrease concrete density. They are also used as emulsifiers in the emulsion polymerization of polymers such as styrene–butadiene, nitrile, polychloroprene, and acrylonitrile–butadiene–styrene.