Patent ID: 6462142
Filing Date: 2002-10-08
Classification: B01J,C08J

Abstract:
A method for modifying the surface chemistry of at least one article, said article having at least one surface region including at least one polymer, comprising the steps of:a. placing at least one article in a closed reaction chamber; b. evacuating the reaction chamber to a negative pressure; c. rapidly injecting a treatment gas into the reaction chamber, the treatment gas having an essentially predetermined composition comprising one or more components which are reactive with the at least one article within the reaction chamber, said step of rapidly injecting including pressurizing the reaction chamber at a rate of pressurization no less than 50 millibars per second; d. allowing the treatment gas to react with the at least one article within the closed reaction chamber; e. removing the treatment gas from within the reaction chamber; and, f. removing the at least one article from the reaction chamber.