Hydrophilic coating and substrates, particularly medical devices

Details Hydrophilic coating and substrates, particularly medical devices Hydrophilic coating and substrates, particularly medical devices

1997-09-15

2000-04-11

Dixon, Merrick

Stock material or miscellaneous articles

Composite

Of polyamidoester

4284237, 4284242, 4284241, 4274121, 4274125, 427 2, B32B 2700

Patent

active

060486201

ABSTRACT:
A substrate such as a catheter or a guide wire is provided with a lubricous, hydrophilic abrasion-resistant coating by:
a) coating said substrate with a first aqueous coating composition comprising an aqueous dispersion or emulsion of a polymer having organic acid functional groups and a polyfunctional crosslinking agent having functional groups being capable of reacting with organic acid groups, and drying the coating to obtain a substantially water-insoluble coating layer still including functional groups being reactive with organic acid groups, and
b) contacting the dried coating layer obtained in a) with a second aqueous coating composition comprising an aqueous solution or dispersion of a hydrophilic polymer having organic acid functional groups, and drying the combined coating, the hydrophilic polymer thereby becoming bonded to the polymer of the first coating composition through the crosslinking agent.
The drying can be carried out at ambient (room) temperature.

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PEBAX.RTM. 3533 SA 00 Base Polymer for Structural Hot Melt Adhesives.

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