Stock material or miscellaneous articles – Composite – Of polyamidoester
Patent
1995-02-01
1999-07-06
Dawson, Robert
Stock material or miscellaneous articles
Composite
Of polyamidoester
4284231, 4284233, 4284235, 4284237, 525452, 525453, 604 96, B32B 2700
Patent
active
059195703
ABSTRACT:
Slippery, hydrophilic coating compositions of a polyurethane/urea prepolymer adduct intermediate commingled with at least one dissimilar hydrogel polymer precursor, and materials composed of a polymeric plastic or rubber substrate or a metallic substrate with a slippery hydrogel coating of a polyurethane/urea prepolymer adduct intermediate and at least one dissimilar hydrogel thereon, such that the coating composition tenaciously adheres to the substrate, are disclosed. The coating compositions and coated materials are non-toxic and biocompatible, and are ideally suited for use on medical devices, particularly, catheters, catheter balloons and stents. The coating compositions, coated materials and coated devices demonstrate low coefficients of friction in contact with body fluids, especially blood, as well as a high degree of wear permanence over prolonged use of the device. The hydrogel coatings are capable of being dried to facilitate storage of the devices to which they have been applied, and can be instantly reactivated for later use by exposure to water.
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Ding Ni
Forman Michael R.
Helmus Michael N.
Hostettler Fritz
Rhum David
Aylward D.
Dawson Robert
Schneider Inc.
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