Process for hydrophilizing surfaces of fluidic components and systems
First Claim
1. A process for producing a film of a hydrophilic polymer on the inner surfaces of a fluidic component, the hydrophilic polymer having a surface wettability for aqueous solutions which is higher than the surface wettability of the inner surfaces of the fluidic component in the absence of a film of the hydrophilic polymer, comprising:
- a) subjecting the inner surfaces of the fluidic component to a physicochemical pre-treatment, b) contacting the inner surfaces of the fluidic component with a solution of the hydrophilic polymer, c) replacing the solution of the hydrophilic polymer with a gaseous medium in such a manner that firstly the inner surfaces of the fluidic component remain wetted with part of the solution of the hydrophilic polymer, and d) removing the solvent to produce a film of the hydrophilic polymer on the inner surfaces of the fluidic component.
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Abstract
A process for producing a film of a hydrophilic polymer on the inner surfaces of a fluidic component is provided comprising subjecting the inner surfaces of the fluidic component to a physicochemical pre-treatment, contacting the inner surfaces of the fluidic component with a solution of the hydrophilic polymer, replacing the solution of the hydrophilic polymer with a gaseous medium in such a manner that firstly the inner surfaces of the fluidic component remain wetted with part of the polymer solution, and removing the solvent to produce a film of the hydrophilic polymer on the inner surfaces of the fluidic component. The hydrophilic polymer used has a surface wettability for aqueous solutions which is higher than the surface wettability of the inner surfaces of the fluidic component itself.
33 Citations
24 Claims
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1. A process for producing a film of a hydrophilic polymer on the inner surfaces of a fluidic component, the hydrophilic polymer having a surface wettability for aqueous solutions which is higher than the surface wettability of the inner surfaces of the fluidic component in the absence of a film of the hydrophilic polymer, comprising:
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a) subjecting the inner surfaces of the fluidic component to a physicochemical pre-treatment, b) contacting the inner surfaces of the fluidic component with a solution of the hydrophilic polymer, c) replacing the solution of the hydrophilic polymer with a gaseous medium in such a manner that firstly the inner surfaces of the fluidic component remain wetted with part of the solution of the hydrophilic polymer, and d) removing the solvent to produce a film of the hydrophilic polymer on the inner surfaces of the fluidic component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification