Back to results
US 10,428,163 B2Granted
Sulfonation process
AssigneeRohm and Haas Company
InventorsJohn C. Rohanna, Alfred K. Schultz
Life of this patent
Estimating the term…
Abstract
Provided is a method for reacting a resin with sulfuric acid comprising the step of heating a reaction mixture to a temperature of 80° C. or higher, wherein said reaction mixture comprises (a) a collection of copolymer particles (A), (b) sulfuric acid, and (c) a collection of solid particles (B) different from said copolymer particles (A), wherein said solid particles (B) have BET surface area of 50 m2/g to 5,000 m2/g.
Claims2
A method for reacting a resin with sulfuric acid comprising the step of heating a reaction mixture to a temperature of 80° C. or higher, wherein said reaction mixture comprises
- (a) a collection of copolymer particles (A),
- (b) sulfuric acid, and
- (c) a collection of solid particles (B) different from said copolymer particles (A), wherein said solid particles (B) have BET surface area of 50 m2/g to 5,000 m2/g, wherein said solid particles (B) comprise activated carbon particles.
Dependencies are inferred from the claim text.