Process for the fluorination of synthetic resin articles
AssigneeLinde Aktiengesellschaft
InventorsDieter Rebhan, Reinhard Strigl
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Abstract
For the fluorination of synthetic resin articles, e.g., containers, the article to be fluorinated is positioned in a gastight chamber, and a fluorinating treatment gas is produced from a fluorine precursor in situ, e.g., with the aid of a plasma torch from a basic gas mixture comprising a fluorine-containing compound, e.g., CF.sub.4 or SiF.sub.6.
Claims8
A process of fluorinating a synthetic resin article of manufacture in order to reduce permeability with respect to gases and vapors, said process comprising inserting said article into a treatment chamber that can be sealed gastight, passing into the treatment chamber a basic gas mixture comprising an inert gas and a fluorine-containing chemical compound capable of being converted to elemental fluorine, splitting the fluorine-containing compound with an electric arc of a plasma torch to produce a gas containing elemental fluorine, and fluorinating said article.
A fluorination process providing an article of manufacture made of a synthetic resin capable of being fluorinated;
- providing a gas comprising a fluorine-containing chemical compound capable of being converted into elemental fluorine;
- introducing said article and said gas into a substantially gastight zone;
- forming elemental fluorine in said zone with a plasma torch;
- and
- effecting therein fluorination of said article.
Dependencies are inferred from the claim text.