Production of thin film composite hollow fiber membranes
US11253819B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 2020 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Aug 20, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B21/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
System, devices, and method for the production of thin film composite hollow fiber membranes on a hollow fiber support structure. The system includes a comb and roller device, or comb and dual roller device, which can be used to define a submerged travel path in a first solution bath for a hollow fiber. The combs and rollers control the amount of time the hollow fiber spends in the first solution. The first solution contains a first monomer, and the hollow fiber is impregnated with the first monomer. The amount of impregnation depends on the time spent in the first solution. Subsequent immersion in a second solution containing a second monomer results in the formation of a thin film composite hollow fiber membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.