Patents
US 12741265 B2: Ammonium-functionalized polysulfone copolymers for moisture-swing CO2 capture
- Granted
- 2026-09-22
- Filed
- 2021-02-01 application 17793925
- Type
- Utility · 14 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A quaternary ammonium-functionalized poly(arylene ether sulfone) copolymer for moisture-swing CO2 capture, and a method for producing the same, is disclosed. The copolymer includes a polysulfone copolymer having a copolymerization unit based on diallyl bisphenal A (DABA) and has quaternary ammonium functionalities. The method for preparation of a quaternary ammonium-functionalized poly(arylene ether sulfone) copolymer includes reacting diallyl bisphenol A (DABA) with bisphenol A (BPA) and 4,4′-difluorodiphenyl sulfone (DFDPS) to form an allyl-modified poly(arylene ether sulfone) (PAES-co-APAES) copolymer, then modifying the PAES-co-APAES copolymer to convert the allyl functionalities to tertiary amines, forming tertiary amine-modified PAES (PAES-co-TAPAES) copolymer. The method also includes converting the tertiary amine of the PAES-co-TAPAES copolymer to quaternary ammonium, forming quaternary ammonium-modified PAES. These quaternary ammonium-modified PAES may be processed into membranes, films, and hollow fibers.
Source: PTBLXML, file of 2026-09-22 (ipgb20260922.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY 1,571 patents | US company or organization | Scottsdale, AZ | PTBLXML, file of 2026-09-22 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Matthew Green | Phoenix, AZ | PTBLXML, file of 2026-09-22 | ||
| Hoda Shokrollahzadeh Behbahani | Tempe, AZ | PTBLXML, file of 2026-09-22 | ||
| Yi Yang | Mesa, AZ | PTBLXML, file of 2026-09-22 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01J | Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus | B01J20/265 | PTBLXML, file of 2026-09-22 |
| B01D | Separation | B01D53/62 | PTBLXML, file of 2026-09-22 |
| C08G | Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds | C08G75/23 | PTBLXML, file of 2026-09-22 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.