Universal scalable and cost-effective surface modifications

Patent metadata

Field	Value
Publication number	US-10315169-B2
Application number	US-201715581783-A
Country	US
Kind code	B2
Filing date	Apr 28, 2017
Priority date	Feb 21, 2013
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

Disclosed are fouling resistant filtration membranes comprising a polymeric thin-film membrane comprising a surface. Also disclosed are methods of modifying thin-film filtration membranes, thereby improving, for example, the anti-fouling properties of the membranes. Also disclosed are methods of purifying water using the disclosed membranes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

First claim

What is claimed is:

1. A compound having a structure represented by a formula:

wherein A is —(SO 2 )— and L is —OQ or -NR 3 Q;
wherein Q is hydrogen, a hydrophilic polymer, or a structure represented by a formula:

wherein Z is —CR 6a R 6b , —C(═O)—, —C(═NH)—, or —C(═NH)NR 7 —;
wherein m is 0, 1, 2, 3, 4, 5, 6, 7, or 8;
wherein each of R 1a and R 1b is independently hydrogen or halogen;
wherein each of R 2a and R 2b is halogen;
wherein R 3 , when present, is hydrogen or C1-C4 alkyl;
wherein each of R 4a and R 4b , when present, is independently selected from the group consisting of hydrogen, halogen, —CN, —OH, —NR 8a R 8b , —NR 8a R 8b H + , C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, —SO 3 − , —SO 3 R 9 , —CO 2 —, and —CO 2 R 9 ;
wherein each of R 5a , R 5b , and R 5c is independently selected from the group consisting of hydrogen, halogen, —CN, —OH, —NR 10a R 10b , —NR 10a R 10b H + , C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, —SO 3 − , —SO 3 R 11 , —CO 2 − , and —CO 2 R 11 ;
wherein each of R 6a and R 6b , when present, is independently selected from the group consisting of hydrogen, halogen, —CN, —OH, —NR 12a R 12b , —NR 12a R 12b H + , C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, —SO 3 − , —SO 3 R 13 , —CO 2 − , and —CO 2 R 13 ;
wherein R 7 , when present, is hydrogen or C1-C4 alkyl;
wherein each of R 8a and R 8b , when present, is independently hydrogen or C1-C4 alkyl;
wherein R 9 , when present, is hydrogen or C1-C4 alkyl;
wherein each of R 10a and R 10b , when present, is independently hydrogen or C1-C4 alkyl;
wherein R 11 , when present, is hydrogen or C1-C4 alkyl;
wherein each of R 12a and R 12b , when present, is independently hydrogen or C1-C4 alkyl; and
wherein R 13 , when present, is hydrogen or C1-C4 alkyl.

2. The compound of claim 1 , wherein m is 0.

3. The compound of claim 1 , wherein Z is —CH 2 or —C(═NH)NH—.

4. The compound of claim 1 , wherein the halogen is —F or —Cl.

5. The compound of claim 1 , wherein the halogen is —F.

6. The compound of claim 1 , wherein R 5a is —CO 2 − , R 5b is NH 3 + , and R 5c is hydrogen.

7. The compound of claim 1 , wherein R 5a is —CO 2 − , and each of R 5b and R 5c is hydrogen.

8. The compound of claim 1 , wherein R 5a is —NH 3 + , and each of R 5b and R 5c is hydrogen.

9. The compound of claim 1 , wherein the compound has a structure selected from:

10. The compound of claim 1 , wherein the compound has a structure selected from:

11. The compound of claim 1 , wherein the compound has a structure selected from:

Assignees

• Univ California

Inventors

• Hoek Eric M V
• Kaner Richard B
• Mcverry Brian T

Classifications

• B01D2323/345

  UV-treatment · CPC title

• B01D69/02

  characterised by their properties · CPC title

• B01D61/025

  Reverse osmosis; Hyperfiltration · CPC title

• B01D67/0088

  Physical treatment with compounds, e.g. swelling, coating or impregnation · CPC title

• C07C247/18

  being further substituted by carboxyl groups · CPC title