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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 11802200 B1

PDFFull Text
Date of Patent:
Oct. 31, 2023

Filed:

Apr. 27, 2022

Isoporous self-assembled block copolymer films containing high molecular weight hydrophilic additives and methods of making the same

Applicant:

Terapore Technologies, Inc., South San Francisco, CA (US);

Inventors:

Jayraj K. Shethji, San Francisco, CA (US);

Rachel M. Dorin, San Francisco, CA (US);

Spencer Robbins, San Francisco, CA (US);

Assignee:

TeraPore Technologies, Inc., South San Francisco, CA (US);

Attorney:

Johnson, Marcou, Isaacs & Nix, LLC

Primary Examiner:

John Kim

Int. Cl.
CPC ...
C08L 53/00 (2006.01); C08L 39/06 (2006.01); C08J 9/00 (2006.01); B01D 67/00 (2006.01); B01D 71/80 (2006.01); B01D 69/06 (2006.01); B29C 39/00 (2006.01); C08J 9/28 (2006.01); C08J 9/10 (2006.01); C08L 101/00 (2006.01); C08J 9/26 (2006.01); C08J 5/18 (2006.01); B01D 71/26 (2006.01); B29D 7/01 (2006.01); B01D 71/28 (2006.01); B01D 71/40 (2006.01);
U.S. Cl.
CPC ...
C08L 53/005 (2013.01); B01D 67/0011 (2013.01); B01D 67/0016 (2013.01); B01D 71/26 (2013.01); B01D 71/80 (2013.01); B29C 39/003 (2013.01); B29D 7/01 (2013.01); C08J 5/18 (2013.01); C08J 9/00 (2013.01); C08J 9/10 (2013.01); C08J 9/26 (2013.01); C08J 9/28 (2013.01); C08L 39/06 (2013.01); C08L 53/00 (2013.01); C08L 101/00 (2013.01); B01D 69/06 (2013.01); B01D 71/28 (2013.01); B01D 71/40 (2013.01); B01D 2323/02 (2013.01); B01D 2325/021 (2013.01); B29K 2039/06 (2013.01); C08L 2203/16 (2013.01);
Abstract

The invention provides systems and methods for substantially improving the compaction resistance of isoporous block copolymer (BCP) film by adding a high molecular weight hydrophilic additive in the casting dope formulation. Systems and methods disclosed also disclose several other multifunctional enhancements to film properties including: low fouling propensity, improved permeability, improved permeability retention upon drying, and ability to tune the substructure and pore size of these novel BCP films. These porous BCP films are useful in filtration and separations applications and are amenable to standard manufacturing practices.

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