Gravity-driven chitosan-enhanced melamine sponge for stable ultrafast filtration
US-2021268447-A1 · Sep 2, 2021 · US
CO2-philic crosslinked polyethylene glycol-based membranes for acid and sour gas separations
US11718805B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11718805-B2 |
| Application number | US-202117140386-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 4, 2021 |
| Priority date | Jan 4, 2021 |
| Publication date | Aug 8, 2023 |
| Grant date | Aug 8, 2023 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
This disclosure relates to CO2-philic crosslinked polyethylene glycol membranes useful for natural gas purification processes. Also provided are methods of using the membranes to remove CO2 and H2S from natural gas.
First claim
Opening claim text (preview).
What is claimed is: 1. A CO 2 -philic polyethylene glycol (PEG) compound of Formula (Ia): wherein: each n is independently an integer between 1 and 100. 2. The compound of claim 1 , wherein each n is independently an integer between 4 and 50. 3. The compound of claim 1 , wherein each n is independently an integer between 4 and 20. 4. A CO 2 -philic polyethylene glycol (PEG) compound of Formula (Ib): wherein each m is independently an integer between 1 and 25. 5. The compound of claim 4 , wherein each m is independently an integer between 4 and 20. 6. A CO 2 -philic membrane, comprising a crosslinked CO 2 -philic polyethylene glycol (PEG) compound of Formula (I): wherein: R is selected from: each n is independently an integer between 1 and 100; and each m is independently an integer between 1 and 100. 7. The membrane of claim 6 , wherein the compound of Formula (I) is a compound of Formula (Ia): wherein each n is independently an integer between 1 and 100. 8. The compound of claim 7 , wherein each n is independently an integer between 4 and 50. 9. The compound of claim 7 , wherein each n is independently an integer between 4 and 20. 10. The membrane of claim 6 , wherein the compound of Formula (I) is a compound of Formula (Ib): wherein each m is independently an integer between 1 and 100. 11. The compound of claim 10 , wherein each m is independently an integer between 4 and 50. 12. The compound of claim 10 , wherein each m is independently an integer between 4 and 20. 13. The membrane of claim 6 , wherein the membrane demonstrates enhanced gas separation performance in a sequestration of CO 2 and H 2 S from natural gas as compared to a membrane that does not contain the CO 2 -philic PEG compound. 14. The membrane of claim 13 , wherein the membrane exhibits a CO 2 -permeability increase of about 2,000% to about 4,000% as compared to a membrane that does not contain the CO 2 -philic PEG compound. 15. The membrane of claim 13 , wherein the membrane exhibits a H 2 S-permeability increase of about 2,000% to about 4,000% as compared to a membrane that does not contain the CO 2 -philic PEG compound. 16. The membrane of claim 13 , wherein the membrane exhibits a H 2 S/CH 4 selectivity increase of about 30% to about 60% as compared to a membrane that does not contain the CO 2 -philic PEG compound.
Assignees
Inventors
Classifications
Polyethylene glycol or polyethyleneoxide · CPC title
Amines · CPC title
- C10L3/104Primary
Carbon dioxide · CPC title
characterised by specific membranes · CPC title
by chemical reactions (in-situ polymerisation, polycondensation, cross-linking or reaction for manufacturing composite membranes B01D69/125) · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11718805B2 cover?
- This disclosure relates to CO2-philic crosslinked polyethylene glycol membranes useful for natural gas purification processes. Also provided are methods of using the membranes to remove CO2 and H2S from natural gas.
- Who is the assignee on this patent?
- Saudi Arabian Oil Co
- What technology area does this patent fall under?
- Primary CPC classification C10L3/104. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 08 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).