Phillips Petroleum Company

Albert G Holba

William B Hughes

Jimmie J Straw

Melvin D Herd

Jim J Straw

Mel D Herd

Susanne B Doe

This invention relates to the synthesis of bis(haloarylsulfonyl) aromatic compounds and more specifically, bis(chlorophenylsulfonyl) aromatic compounds. Bis(chlorophenylsulfonyl) aromatic compounds and particularly 4,4'-bis(4-chlorophenylsulfonyl)biphenyl are frequently used as monomers and comonomers in making high temperature polymers which possess glass transition temperatures greater than 260.degree. C. A process has been developed wherein product of high purity and minimal iron contamination is produced by reacting haloarylsulfonyl halide with an aromatic compound in the presence of an appropriate catalyst with and without solvent.

Synthesis of bis(haloarylsulfonyl) aromatics

A process for purifying a halogenated aromatic sulfone or ketone compound comprising contacting the compound with a solvent having a normal boiling point less than about 225.degree. C. to form a mixture, heating the mixture to a temperature above the normal boiling point of the solvent in a closed system to form a solution, cooling the solution to recrystallize the compound, and recovering the compound. A second embodiment of the invention comprises repeating the purification process steps at least once to further purify the halogenated aromatic sulfone or ketone compound.

Purification of halogenated aromatic sulfones or ketones

A method and apparatus are provided for analysis of a sample of matter for multiple organic constituents and elemental sulfur in a single process. The method involves passage of a fluid sample through a first separations zone for retention of a first organic constituent, passage through a second separations zone for separation of the remaining organic constituents and sulfur, and quantitative determination of each constituent of interest including elemental sulfur.

Growing community of inventors

Plano, TX, United States of America

Albert G Holba