Method for providing an inner-skinned functionalized coating on

Details Method for providing an inner-skinned functionalized coating on Method for providing an inner-skinned functionalized coating on

1991-03-11

1993-05-18

Lusignan, Michael

Stock material or miscellaneous articles

Hollow or container type article

Glass, ceramic, or sintered, fused, fired, or calcined metal...

428 359, 428 3691, 427 2, 427235, 427238, 427294, 427496, B05D 722

Patent

active

052120007

ABSTRACT:
This invention provides a method for providing a functionalized inner skin on the lumen-defining surface of a hollow tube using either a Newtonian coating fluid used in combination with a relatively non-Newtonian plug fluid, or a non-Newtonian coating fluid (optionally in combination with a more non-Newtonian plug fluid). This invention enables the facile provision of a functionalized inner skin on the lumen-defining surface of tubes previously deemed difficult to coat, e.g., tubes wherein the inner diameter varies along the length of the tubes, tubes having elliptical or irregular cross-sectional configurations, branched tubes, and tubes having lumens of small diameter, e.g. tubes useful in membrane applications. Preferably, the coating will be dried or crosslinked to promote sustained adhesion and/or to increase the functionality of the coating. In one embodiment, this invention provides a method for imparting a permselective layer upon the lumen-defining surface of a tubular membrane, and/or protective layer therefor.

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