5-sulfoisophthalic acid salts and process for the preparation thereof
View Patent ↗This invention relates to methods for the production of sodium, potassium, rubidium, cesium, magnesium, manganese, cobalt, nickel, aluminum, copper (II) and zinc salts of 5-sulfoisophthalic acid. In addition, this disclosure describes new compositions of matter, specifically, the rubidium, manganese, cobalt, nickel, and copper (II) salts of 5-sulfoisophthalic acid. The method utilizes the addition of metals salts to a crude sulfonation solution of 5-sulfoisophthalic acid.
1. A composition of matter, said composition of matter comprising the reaction product of a sulfonation solution containing 5-sulfoisophthalic acid and a rubidium cation producing compound.
2. A composition of matter, said composition of matter comprising the reaction product of a sulfonation solution containing 5-sulfoisophthalic acid and a metal cation producing compound wherein said metal cation is selected from the group consisting of manganese, cobalt, nickel, and aluminum.
3. A composition of matter, said composition of matter comprising the reaction product of a sulfonation solution containing 5-sulfoisophthalic acid and a metal cation producing compound wherein said metal cation is copper (II).