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US 6,197,234 B1Granted
Method for increasing the anti-wettability of a body
AssigneeConte
InventorsPierre Goudmand, Odile Dessaux, Jean-Denis Quensierre, Vincent Bedhome, Philippe Chavatte, José Duez
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Abstract
To increase the anti-wettability of a body vis a vis a fluid the body is subjected in a treatment enclosure to a post-discharge nitrogen plasma. A fluorinated vapor is fed into the plasma on the input side or on the output side of the discharge cavity.
Claims8
A method for increasing the anti-wettability of a porous body previously made with a sintered polymeric powder comprising:
- providing the porous body in a treatment enclosure,
- generating a non-ionic post-discharge nitrogen plasma by an electromagnetic wave discharge with a nitrogen-containing gas, wherein said non-ionic post-discharge nitrogen plasma further contains a fluorinated vapor,
- feeding said non-ionic post-discharge nitrogen plasma to said treatment enclosure, and
- exposing said porous body to said non-ionic post-discharge nitrogen plasma to form a porous body having an increased anti-wettability.
1 more element
A method for increasing the anti-wettability of a porous body made with a sintered polymeric powder comprising:
- providing the polymeric powder in a treatment enclosure,
- generating a non-ionic post-discharge nitrogen plasma by an electromagnetic wave discharge with a nitrogen-containing gas, wherein said non-ionic post-discharge nitrogen plasma further contains a fluorinated vapor,
- feeding said non-ionic post-discharge nitrogen plasma to said treatment enclosure,
- exposing said polymeric powder to said non-ionic post-discharge nitrogen plasma, and
- sintering said polymeric powder to form a porous body having an increased anti-wettability.
2 more elements
Dependencies are inferred from the claim text.