IP Library › Granted Patent US 10,610,859
Granted Patent B2
US 10,610,859 · App. 15/757,045 · Granted Apr 7, 2020

Method of purifying water

Inventors: J. Marcus Slagt (Nisse, NL); Alfred K. Schultz (Maple Glen, PA)
Assignees: DOW GLOBAL TECHNOLOGIES LLC; ROHM AND HAAS COMPANY
B01J49/50B01J47/028B01J49/08B01J49/57C02F1/42C02F2001/422C02F2001/425C02F2101/30C02F2303/16
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Quick Facts
Patent No.
US 10,610,859
App. No.
15/757,045
Granted
Apr 7, 2020
Kind
B2
Abstract

Provided is a method of regenerating an acrylic resin (B2), comprising (A) providing a collection of particles of acrylic resin (B2) that has calculated Hansch parameter of −1.0 to 2.5, wherein one or more humic acid, one or more fulvic acid, or a mixture thereof, is adsorbed onto said acrylic resin (B2), and (B) bringing said collection of particles of acrylic resin (B2) into contact with an aqueous solution (RA) having pH of 4 or lower, to form a mixture B2RA, (C) then separating acrylic resin (B3) from said mixture B2RA.

Claims (5)

1. A method of regenerating an acrylic resin (B2), comprising

(A) providing a collection of particles of acrylic resin (B2) that has calculated Hansch parameter of −0.2 to 0.5, wherein one or more humic acid, one or more fulvic acid, or a mixture thereof, is adsorbed onto said acrylic resin (B2), and

(B) bringing said collection of particles of acrylic resin (B2) into contact with an aqueous solution (RA) having pH of 4 or lower, to form a mixture B2RA,

(C) then separating acrylic resin (B3) from said mixture B2RA.

2. The method of claim 1 , wherein said aqueous solution (RA) has pH of 1 or lower.

Assignments (7)
CHANGE OF LEGAL ENTITY Recorded Sep 10, 2024
From: DDP SPECIALTY ELECTRONIC MATERIALS US, INC
To: DDP SPECIALTY ELECTRONIC MATERIALS US, LLC
Reel/Frame 068907/0881 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 12, 2020
From: SLAGT, J. MARC
To: DOW BENELUX B.V.
Reel/Frame 051800/0556 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 12, 2020
From: DOW BENELUX B.V.
To: DOW GLOBAL TECHNOLOGIES LLC
Reel/Frame 051800/0683 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 12, 2020
From: SCHULTZ, ALFRED K.
To: ROHM AND HAAS COMPANY
Reel/Frame 051801/0286 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 12, 2020
From: DOW GLOBAL TECHNOLOGIES LLC
To: THE DOW CHEMICAL COMPANY
Reel/Frame 051911/0333 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 12, 2020
From: THE DOW CHEMICAL COMPANY
To: DDP SPECIALTY ELECTRONIC MATERIALS US, INC,
Reel/Frame 051912/0063 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 12, 2020
From: ROHM AND HAAS COMPANY
To: DDP SPECIALTY ELECTRONIC MATERIALS US 8, LLC
Reel/Frame 051912/0486 →