Patent · US Active

Surface modified membranes for gas separation, and a method for preparing thereof

US11679356B2 · kind B2 · utility

0Cited by

5References

13Claims

0Family size

Assignee

SINTEFF TTO AS · NO

Inventors

Marius Sandru · Trondheim, NO
Eugenia Mariana Sandru · Trondheim, NO
Per Stenstad · Trondheim, NO

Key dates

Filing date	Apr 30, 2019
Grant date	Jun 20, 2023
Priority date	—
Expiry date	Apr 30, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a CO2 selective gas separation membrane and a method for preparing the gas separation membrane and the use thereof. The CO2 selective gas separation membrane comprises a gas permeable or porous support layer; and at least one gas permeable polymer layer, which is surface modified with polymer chains having CO2 philic groups, wherein the gas permeable polymer layer has a spatially controlled distribution of the CO2 philic groups on the surface thereof. The method of preparing the CO2 selective gas separation membrane, comprises the steps of: depositing at least one gas permeable polymer layer on a porous or gas permeable support layer to form a dense membrane, and surface modifying the dense membrane with polymer chains having CO2 philic groups, to obtain spatially controlled distribution of the CO2 philic groups on the surface thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.