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US 2003/0215652 A1Published application
Transmission barrier layer for polymers and containers
OwnerPaul J. O'Connorinventor
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Abstract
A barrier to diffusion of gas through polymers by means of plasma generated coating on polymeric substrates. The coating is suitable for application on planar polymeric substrates such a sheet or film. The coating is suitable for application on three-dimensional polymeric substrates, such as polymeric containers, or bottles.
Claims12
A polymeric substrate having a barrier coating comprising
- a. a polymeric substrate;
- b. a first condensed plasma zone of SiOxCyHz, wherein x is from 1.0 to 2.4, y is from 0.2 to 2.4, and z is from zero to 4, on the polymeric substrate wherein the plasma is generated from an organosilane compound in an oxidizing atmosphere;
- and
- c. a further condensed plasma zone of SiOx on the polymeric substrate wherein the plasma is generated from an organosilane in an oxidizing atmosphere sufficient to form the SiOx.
1 more element
A polymeric substrate having a barrier coating comprising
- a. a plasma deposited zone of an organosilicon compound on the substrate wherein the plasma is generated in a substantially non-oxidizing atmosphere;
- and
- b. a further condensed plasma zone of SiOx on the polymeric substrate wherein the plasma is generated from an organosilane in an oxidizing atmosphere sufficient to form the SiOx.
Dependencies are inferred from the claim text.