IP Library › Granted Patent US 10,428,163
Granted Patent B2
US 10,428,163 · App. 15/562,047 · Granted Oct 1, 2019

Sulfonation process

Inventors: John C. Rohanna (Royersford, PA); Alfred K. Schultz (Maple Glen, PA)
Assignee: ROHM AND HAAS COMPANY
C08F8/36C01B17/905C08K3/04C08L33/20
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Quick Facts
Patent No.
US 10,428,163
App. No.
15/562,047
Granted
Oct 1, 2019
Kind
B2
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 m 2 /g to 5,000 m 2 /g.

Claims (5)

1. 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 m 2 /g to 5,000 m 2 /g, wherein said solid particles (B) comprise activated carbon particles.

2. The method of claim 1 , wherein said activated carbon particles are powdered carbon particles.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 19, 2019
From: ROHANNA, JOHN C.; SCHULTZ, ALFRED K.
To: ROHM AND HAAS COMPANY
Reel/Frame 049514/0773 →
Continuity (2)
Provisional Application 62140779 · Mar 31, 2015
Related Publication 20180086863A1 · Mar 29, 2018