Loading patent…
AssigneeL'Air Liquide - Societe Anonyme a'Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsSudhir S. Kulkarni, David J. Hasse, David R. Corbin, Aspi N. Patel
Estimating the term…
A mixed matrix membrane for gas separations is provided with a nonporous continuous phase of a polymer and a dispersed phase of molecular sieve particles reacted with a monofunctional organosilicon compound. The monofunctional organosilicon compound is characterized by (a) at least one silicon substituent group which reacts or is compatible with the polymer, and (b) at most one displaceable radical that can react with the molecular sieve. A process for making a selectively gas permeable mixed matrix membrane involves reacting a molecular sieve with the monofunctional organosilicon compound, uniformly dispersing the reacted sieve with a polymer, and forming the resulting mixed matrix composition into a membrane structure. These mixed matrix membranes provide an improved combination of permeability and selectivity as compared to polymer-only membranes and mixed matrix membranes in which the molecular sieve is not reacted with a monofunctional organosilicon compound.
A process for separating component gases of a gas mixture comprising the steps of
A mixed matrix gas separation membrane comprising particles of a treated molecular sieve dispersed in a continuous phase consisting essentially of a matrix polymer, in which the treated molecular sieve comprises the reaction product of a molecular sieve and a monofunctional organosilicon compound having the formula Si(XYR1R2) in which X is a displaceable radical, Y is a linking group, and R1 and R2 are each independently any radical other than a displaceable radical.
A process for making a mixed matrix gas separation membrane having an active layer of particles of a treated molecular sieve dispersed in a continuous phase consisting essentially of a matrix polymer, comprising the steps of,
Dependencies are inferred from the claim text.