Production of novel condensates comprising bisphenols and aromatic aminosulfonic acids, condensates and dispersant, additive and water- reducing agent based thereon

摘要

Novel condensates comprising bisphenols and aromatic aminosulfonic acids, in particular, novel 4-aminobenzenesulfonic acid-2,2- bis (hydroxyphenyl)propaneformaldehyde condensates, and methods for their production are disclosed. The novel condensates are useful as a dispersant for disperse dyes, an additive for carbonaceous fine powder- water slurries and as a water reducing agent for cement.