HIGH PERMEABILITY COPOLYIMIDE GAS SEPARATION MEMBRANES

摘要

The present invention generally relates to high permeability, UV cross-linkable copolyimide polymers and membranes for gas, vapor, and liquid separations, as well as methods for making and using these membranes. The invention provides a process for separating at least one gas from a mixture of gases using the high permeability copolyimide membrane or the UV cross-linked copolyimide membrane, the process comprising: (a) providing a high permeability copolyimide membrane or a UV cross-linked copolyimide membrane which is permeable to said at least one gas; (b) contacting the mixture on one side of the high permeability copolyimide membrane or the UV cross-linked copolyimide membrane to cause said at least one gas to permeate the membrane; and (c) removing from the opposite side of the membrane a permeate gas composition comprising a portion of said at least one gas which permeated said membrane.

主权项

1. A UV cross-linkable copolyimide polymer comprising a plurality of repeating units of formula (I):wherein Y1 is selected from the group consisting ofand mixtures thereof, and wherein Y2 is selected from the group consisting ofand mixtures thereof; wherein n and m are independent integers from 2 to 500.