Rohm and Haas Company

Glenn H Beasley

James Watson Neely

Warren T Ford

Berni P Chong

Peter G Cartier

Macroporous styrene polymer particles which have been partially pyrolyzed at temperatures between 300.degree. and 800.degree. C. to form non-functionalized, carbonaceous adsorbents, are functionalized according to this invention to produce weak base, strong base, weak acid or strong acid, dense ion exchange particles, or precursors thereof, using such reactions as halogenation, sulfonation, chloromethylation, chlorosulfonation and oxidation, alone or followed by aminolysis or other conventional functionalization reactions.

Ion exchange material prepared from partially pyrolyzed macroporous

Novel anion exchange resins containing a crosslinked aromatic backbone resin with sulfonamide functional ion exchange groups on the aromatic rings and a process for producing the same.

Anion exchange resins prepared from crosslinked

Sulfur dioxide and sulfur trioxide may be removed from gases over a broad range of temperature and moisture conditions by utilizing a class of resinous adsorbents which retain their capacity at low moisture levels. Preferred embodiments are those resins which may be thermally regenerated to recover the sulfur.

Growing community of inventors

Cheltenham, PA, United States of America

Glenn H Beasley