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EP0528540A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Thin-film coatings made by means of plasma-activated chemical vapor deposition of fluorinated cyclic siloxanes

Assignee: Dow Silicones Corp
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Filing: 1992-07-16
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Granted: —
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Expires: 2012-07-16
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Abstract

Abstract Coatings produced by means of the deposition of thin films formed by plasma-activated chemical vapor deposition of volatile fluorinated cyclic siloxanes having the structure [RR′SiO] x , where R is an alkyl group with 1-6 carbon atoms, R′ is a fluorinated alkyl group with 3-10 carbon atoms, the carbon in the alpha and beta positions with respect to the silicon atom is hydrogenated and x is 3 or 4. The process consists of introducing vaporized siloxane into a deposition chamber containing the substrate to be coated; the reaction of the vapor is then induced by means of a plasma that has been excited by radio-frequency (RF) [electric field]. The particular coatings thus produced have useful physical properties.

Inventors

  • 👤 Riccardo D'agostino
  • 👤 Gerardo Caporiccio
  • 👤 Pietro Favia

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 02:24
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C23C16/401

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 107 words
A method for the formation of a coating over a substrate consisting of: the introduction of a sufficient quantity of vapor into a removal chamber containing the substrate; the vapor is comprised of a fluorinated cyclic siloxane with the structure [RR′SiO] x , in which R is a hydrocarbon radical with 1-6 carbon atoms, R′ is a fluorinated hydrocarbon radical with 3-10 carbon atoms, the carbon in the alpha and beta positions with respect to the silicon atom is hydrogenated and x is 3 or 4; and induction of the reaction of the vapor in the chamber by the effect of a plasma discharge by radio frequency.
Claim 2
Dependent Claim 9 words
A substrate coated with the method of claim 1.

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