Coating processes – Foraminous product produced – Microporous coating
Patent
1987-10-14
1989-08-29
Konopka, Paul E.
Coating processes
Foraminous product produced
Microporous coating
208308, 210490, 21050039, 210651, 264 41, 264 464, 26433119, 264DIG18, 502 4, 502402, 585819, B05D 500, B01J 2026, C07C 7144
Patent
active
048616281
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.
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Allocca Joseph J.
Exxon Research and Engineering Company
Konopka Paul E.
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