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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.:

US 12496555 B1

PDFFull Text
Date of Patent:
Dec. 16, 2025

Filed:

Feb. 01, 2022

Block copolymer templated crazing for membrane separation

Applicants:

Xiaodan Gu, Hattiesburg, MS (US);

Daniel Weller, Liberty Lake, WA (US);

Inventors:

Xiaodan Gu, Hattiesburg, MS (US);

Daniel Weller, Liberty Lake, WA (US);

Assignee:

THE UNIVERSITY OF SOUTHERN MISSISSIPPI;

Attorneys:

MENDELSOHN DUNLEAVY P.C.

Kevin J. Dunleavy

Kristina I. Sanchez

Primary Examiner:

Magali P Slawski

Assistant Examiner:

Eric J Mccullough

Int. Cl.
CPC ...
B01D 69/12 (2006.01); B01D 61/14 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 71/28 (2006.01); B01D 71/52 (2006.01); B01D 71/80 (2006.01); C08J 5/18 (2006.01); C08L 53/00 (2006.01);
U.S. Cl.
CPC ...
B01D 69/12 (2013.01); B01D 61/145 (2013.01); B01D 67/0027 (2013.01); B01D 69/02 (2013.01); B01D 71/281 (2022.08); B01D 71/283 (2022.08); B01D 71/5211 (2022.08); B01D 71/5222 (2022.08); B01D 71/80 (2013.01); C08J 5/18 (2013.01); C08L 53/00 (2013.01); B01D 2325/02833 (2022.08); B01D 2325/04 (2013.01); B01D 2325/24 (2013.01); B01D 2325/34 (2013.01); C08J 2353/00 (2013.01); C08J 2481/06 (2013.01); C08L 2203/16 (2013.01);
Abstract

A porous composite ultrafiltration membrane including a block copolymer layer having (a) one or more soft block polymer(s) having an elongation at break of greater than about 50%, as measured by ASTM D638 and an elastic modulus of between 10 MPa to 3 GPa as measured by the ASTM D638 tensile test; and (b) one or more hard block polymer(s) having an elongation at break of less than about 65%, as measured by ASTM D638, and an elastic modulus of higher than 1 GPa as measured by the ASTM D638 tensile test, and a macroporous support layer having a pore size larger than a pore size of the block copolymer layer. Also described is a method for making the porous composite membrane.

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