Thin film composite membrane prepared by suspension deposition

Details Thin film composite membrane prepared by suspension deposition Thin film composite membrane prepared by suspension deposition

1989-06-27

1991-07-09

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

21050037, B01D 6136

Patent

active

050303554

ABSTRACT:
Thin film membranes of polyurea, polyureapolyurethane alloy, polyurea-polyurea/urethane alloy or polyurea/urethane are prepared by deposition of a thin film of suspension of the selected polymer on a thick permeable support layer by the technique of preparing a suspension of the selected polymer in a solvent which does not dissolve the thick permeable support layer and permitting the solvent to evaporate and/or permeate through the thick-permeable layer.

REFERENCES:
patent: 4879044 (1989-11-01), Feimer et al.

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