초록 ▼

Composite dense membranes are described comprising (1) a dense ultrathin selective film of a silicon-free polymerizate, (2) a dense, highly permeable intermediate layer formed by conventional polymerization fluids, e.g., gases may be selectively separated using such a composite dense membrane and (3

Composite dense membranes are described comprising (1) a dense ultrathin selective film of a silicon-free polymerizate, (2) a dense, highly permeable intermediate layer formed by conventional polymerization fluids, e.g., gases may be selectively separated using such a composite dense membrane and (3) a microporous substrate supporting the plasma polymerizate film and the intermediate layer.

대표청구항 ▼

A composite dense membrane comprising (1) a dense ultrathin selective film of a silicon-free plasma polymerizate, (2) a dense, highly permeable intermediate layer and (3) a microporous substrate supporting the plasma polymerizate film and the intermediate layer. In a process for the separation of fl

A composite dense membrane comprising (1) a dense ultrathin selective film of a silicon-free plasma polymerizate, (2) a dense, highly permeable intermediate layer and (3) a microporous substrate supporting the plasma polymerizate film and the intermediate layer. In a process for the separation of fluids from a mixture containing at least two component fluids into two fractions, one fraction being enriched with at least one of said component fluids and the other fraction being depleted in same, the process comprising contacting the fluids mixture with a composite dense membrane wherein a pressure differential is maintained between the upstream and downstream surface of said composite dense membrane such that a portion of the mixture selectively passes through the membrane resulting in the enriched fraction being on one side of the membrane and the depleted fraction being on the other side of the membrane, the improvement comprising the use of a composite dense membrane formed from (1) a dense ultrathin selective film of a silicon-free plasma polymerizate, (2) a dense highly permeable intermediate layer and (3) a microporous substrate supporting the plasma polymerizate film and the intermediate layer.