Surface modification of hydrophobic polymer substrate

Details Surface modification of hydrophobic polymer substrate Surface modification of hydrophobic polymer substrate

1996-06-05

1998-03-31

Cameron, Erma

Coating processes

With post-treatment of coating or coating material

Chemical agent applied to treat coating

427341, 427342, 427352, 4273899, 4273935, 427394, B05D 310

Patent

active

057336032

ABSTRACT:
A method for coating the surface of a substrate composed of a hydrophobic polymer with a hydrophobic vinyl polymer. The method includes preparing a solution of the hydrophobic vinyl polymer in a polar nonaqueous solvent, such as 1-methyl-1-pyrrolidinone, in which the hydrophobic vinyl polymer is surface-active. The substrate then is treated with the solution under conditions sufficient to deposit the hydrophobic vinyl polymer on the substrate. The hydrophobic vinyl polymer may have readily hydrolyzable pendant groups which, upon hydrolysis thereof in an aqueous medium, will result in the formation of a hydrophilic vinyl polymer coating on the substrate. For example, the hydrophobic vinyl polymer may be poly(vinyl trifluoroacetate). Also provided are coated substrates, in which the substrate is a shaped article composed of a hydrophobic polymer. The shaped article may be, for example, a film, fiber, or nonwoven web.

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