Cross-linked polymeric membranes for carbon dioxide separation
US9873094B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 14, 2015 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Jan 1, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A membrane useful in gas separation, the membrane comprising a cross-linked polysiloxane structure having a cross-link density of about 0.1×10−5 mol/cm3 to about 6×10−5 mol/cm3, where, in particular embodiments, the cross-linked polysiloxane structure has the following general structure:wherein R1, R2, R3, R4, R5, and R6 are independently selected from hydrocarbon groups having at least 1 and up to 6 carbon atoms; A1 and A2 are independently selected from cyclic hydrocarbon groups; L1 and L2 are linking groups or covalent bonds; n is an integer of at least 1; r and s are independently selected from integers of at least 1; and p is an integer of at least 10. The invention also includes methods for making and using the above-described membranes for gas separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.