The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2025
Filed:
Feb. 23, 2023
Applicant:
Solenis Technologies, L.p., Wilmington, DE (US);
Inventors:
Cecil Coutinho, Wilmington, DE (US);
Sachin Borkar, Wilmington, DE (US);
Shantanu Nikam, Wilmington, DE (US);
Assignee:
SOLENIS TECHNOLOGIES, L.P., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/07 (2006.01); B01D 61/02 (2006.01); B01D 61/14 (2006.01); B01D 61/58 (2006.01); B01D 69/02 (2006.01); C07C 209/86 (2006.01); C08F 26/02 (2006.01); D21H 21/10 (2006.01);
U.S. Cl.
CPC ...
D21H 17/07 (2013.01); B01D 61/027 (2013.01); B01D 61/145 (2013.01); B01D 61/58 (2013.01); B01D 69/02 (2013.01); C07C 209/86 (2013.01); C08F 26/02 (2013.01); D21H 21/10 (2013.01); B01D 2311/08 (2013.01); B01D 2325/20 (2013.01);
Abstract
Provided is a method for the removal of salts and by-products from vinylamine-containing polymers. In particular, the method allows the removal of unwanted salts, by-products, spent initiators and short chain vinylamine-containing polymers while retaining the functional, higher molecular weight polymers that provide for desired product performance.