| 摘要 |
The present invention relates to a method of coating a surface of a solid polymer substrate, e.g. comprising silicone, thermoplast, thermoset and/or elastomers, with a coating comprising a coat polymer. By use of the method the polymer substrate can be provided with a desired surface character e.g. with respect to its hydrophilic and/or oleophilic character. The method is in particular useful in the production of items for use in contact with the human body and/or laboratory utensils. The method comprises the steps of k) providing a coat polymer, such as a polymer polymer comprises one or more polymer having metacrylate backbone, for the coating, and dissolving said coat polymer in a first solvent, such as water, carbon dioxide and/or organic solvents, l) placing said solid polymer substrate in a reaction chamber m) introducing said polymer coat solution into the reaction chamber, 20 n) introducing carbon dioxide into the reaction chamber, and o) depositing the coating onto the solid polymer substrate surface, wherein the carbon dioxide during at least a part of the deposition step is in its liquid state at a pressure of 7.4 Mpa or less. Optionally the carbon dioxide is subjected to turbulence, e.g. by mechanical stirring during at least a part of the deposition step. |
