Coating composition for multiple hydrophilic applications

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 175/04 (2006.01) A61L 27/28 (2006.01) C08K 3/22 (2006.01) C09D 5/00 (2006.01) C09D 139/06 (2006.01)

Patent

CA 2476953

A coating composition is disclosed which comprises an aqueous polymeric matrix, a hydrophilic polymer, a colloidal metal oxide and a crosslinker. The coating composition when applied on medical devices is hydrophilic, shows improved lubricity, abrasion resistance and substrate adhesion on metallic or plastic substrates. The coating also shows improved water sheeting thus providing the coated substrates with anti-fog properties. The coating absorbs aqueous dye or stain solutions making the substrate suitable for printing.

L'invention concerne une composition de revêtement qui comprend une matrice polymère aqueuse, un polymère hydrophile, un oxyde métallique colloïdal et un agent de réticulation. Lorsqu'elle est appliquée sur des appareils médicaux, cette composition de revêtement est hydrophile, fait preuve d'un pouvoir lubrifiant accru, d'une meilleure résistance à l'abrasion et d'une meilleure adhérence aux substrats métalliques ou plastiques. Le revêtement présente également un meilleur pelliculage de l'eau, conférant ainsi des propriétés anti-voile aux substrats revêtus. De plus, le revêtement absorbe les solutions aqueuses de coloration ou de teinture, rendant ainsi le substrat propre à l'impression.

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