Process for preparation of thin film composite membrane
OwnerUlhas Kharul, Manojkumar Achalpurkar +1inventors
InventorsUlhas Kharul, Manojkumar Achalpurkar, Harshada Lohokare
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Abstract
Thin Film Composite (TFC) membranes are prepared by coating a thin layer of aminated silicon rubber on the surface of highly porous substrate like ultrafiltration membrane, followed by crosslinking with reactive, aliphatic dialdehyde and curing at high temperature. The TFC membranes so prepared have amine functionality making them suitable for varied separation applications in gas separation, vapor permeation, pervaporation and other membrane separation processes.
Claims16
A process for preparation of a thin film composite membrane based on aminated polysiloxanes, the process comprising coating a pretreated porous support membrane with a solution of aminated polysiloxane in an organic water immiscible solvent, partially drying the coated membrane and crosslinking the partially dried coated membrane with an aqueous solution of aliphaticdialdehyde to obtain a crosslinked membrane, heating the crosslinked membrane in controlled manner to obtain the thin film composite membrane.
Dependencies are inferred from the claim text.