Back to results
US 2024/0299887 A1Published application
Thin-film composite membranes having improved adhesion between layers and uses thereof
AssigneeCompact Membrane Systems, Inc.
InventorsSudipto MAJUMDAR, Robert D. LOUSENBERG, Kenneth E. LOPRETE, Ning SHANGGUAN, Irene GONCHAROVSKY, Jacob A. WARGO
Life of this patent
Estimating the term…
Abstract
In an aspect, provided herein is an improved thin-film composite membrane and gas-separation processes using the composite membrane. The composite membrane incorporates a gutter layer from a polymer material selected from a substituted polyacetylene, an addition-polymerized and substituted polynorbornene, or an addition-polymerized and substituted polytricyclononene. The gutter layer provides improved adhesion with a gas-separation layer incorporating a fluorinated ionomer.
Claims21
A thin-film composite membrane comprising:
- a) a porous-layer support;
- b) a gas-separation layer comprising a fluorinated ionomer;
- and
- c) a gutter layer comprising a polymer material having a glass transition temperature greater than 100° C.;
- and
- wherein the polymer material is selected from a substituted polyacetylene comprising a repeating unit structure (I), an addition-polymerized and substituted polynorbornene comprising a repeating unit structure (II), or an addition-polymerized and substituted polytricyclononene comprising a repeating unit structure (III):
- wherein n is a number that defines the degree of polymerization;
- R1 comprises an alkyl or an aromatic group;
- R2 comprises an aromatic group or a silyl group;
- R3 is H or comprises an alkyl group, a silyl group, or an alkoxy-silyl group;
- R4 comprises a silyl group, or an alkoxy-silyl group;
- R5 is H or comprises a silyl group or an alkoxy-silyl group;
- R6 comprises a silyl group or an alkoxy-silyl group;
- R7 is H, or if R5 is H, then R7 comprises a silyl group or an alkoxy-silyl group.
11 more elements
Dependencies are inferred from the claim text.