Abrasion Resistant Coatings by Plasma Enhanced Chemical Vapor Diposition
First Claim
1. A process for preparing a multiple layer coating on a surface of an organic polymeric substrate having a first and a second surface by means of atmospheric pressure glow discharge deposition, the steps of the process comprising depositing a layer (first layer) of a plasma polymerized, optically clear, organosilicon compound onto the surface of the organic polymeric substrate by atmospheric pressure glow discharge deposition of a gaseous mixture comprising a silicon-containing reagent and optionally an oxidant in a first step and thereafter in a second step depositing a substantially uniform layer (second layer) of a polymeric siloxane or silicon oxide compound onto the exposed surface of said first layer by atmospheric pressure glow discharge deposition of a gaseous mixture comprising an oxidant and a silicon-containing reagent, wherein the multiple layer coating has a thickness of at least 2.0 μ
- m, and an abrasion resistance demonstrating a change of less than or equal to 20 delta haze units after 500 Tabor cycles, measured according to ASTM D1044, CS10F wheels, 500 g weight.
0 Assignments
0 Petitions
Accused Products
Abstract
A process for preparing a multiple layer coating on the surface of an organic polymeric substrate by means of atmospheric pressure glow discharge deposition, the steps of the process comprising depositing a layer (first layer) of a plasma polymerized, optically clear, organosilicon compound and thereafter in a second step depositing a substantially uniform layer (second layer) of a polymeric siloxane or silicon oxide compound onto the exposed surface of said first layer, wherein the multiple layer coating has a thickness of at least 2.0 μm and an abrasion resistance demonstrating a change of 20 delta haze units or less after 500 Tabor cycles, measured according to ASTM D1044, CS10F wheels, 500 g weight.
-
Citations
24 Claims
-
1. A process for preparing a multiple layer coating on a surface of an organic polymeric substrate having a first and a second surface by means of atmospheric pressure glow discharge deposition, the steps of the process comprising depositing a layer (first layer) of a plasma polymerized, optically clear, organosilicon compound onto the surface of the organic polymeric substrate by atmospheric pressure glow discharge deposition of a gaseous mixture comprising a silicon-containing reagent and optionally an oxidant in a first step and thereafter in a second step depositing a substantially uniform layer (second layer) of a polymeric siloxane or silicon oxide compound onto the exposed surface of said first layer by atmospheric pressure glow discharge deposition of a gaseous mixture comprising an oxidant and a silicon-containing reagent, wherein the multiple layer coating has a thickness of at least 2.0 μ
- m, and an abrasion resistance demonstrating a change of less than or equal to 20 delta haze units after 500 Tabor cycles, measured according to ASTM D1044, CS10F wheels, 500 g weight.
- View Dependent Claims (7, 21)
-
2. A process for preparing a multiple layer coating on a surface of an organic polymeric substrate having a first and a second surface by means of atmospheric pressure glow discharge deposition, the steps of the process comprising 1) depositing a layer (first layer) of a plasma polymerized, highly adherent organosilicon compound onto the surface of the organic polymeric substrate by atmospheric pressure glow discharge deposition of a gaseous mixture comprising a silicon-containing reagent and optionally an oxidant and thereafter 2) depositing a uniform layer (second layer) of a polymeric siloxane or silicon oxide compound onto the exposed surface of said first layer by atmospheric pressure glow discharge deposition of a gaseous mixture comprising an oxidant and a silicon-containing reagent, and thereafter repeating steps 1) and 2) at least once more to prepare a monolithic, multilayer, abrasion resistant coating.
-
3. A process for preparing a multiple layer coating on a surface of an organic polymeric substrate having a first and a second surface by means of atmospheric pressure glow discharge deposition, the steps of the process comprising 1) depositing a layer (first layer) of a plasma polymerized, highly adherent organosilicon compound of the formula SiNwCxOyHz onto the surface of the organic polymeric substrate by atmospheric pressure glow discharge deposition of a gaseous mixture comprising a silicon-containing reagent and optionally an oxidant and thereafter 2) depositing a uniform layer (second layer) of a polymeric siloxane or silicon oxide compound of the formula SiNw′
- Cx′
Oy′
Hz′
onto the exposed surface of said first layer by atmospheric pressure plasma deposition of a gaseous mixture comprising an oxidant and a silicon-containing reagent, wherein;
w is a number from 0 to 1.0 x is a number from 0.1 to 3.0, y is a number from 0.5 to 5.0, z is a number from 0.1 to 5.0, w′
is a number from 0 to 1.0,x′
is a number from 0 to 1.0y′
is a number from 1.0 to 5.0,z′
is a number from 0.1 to 10.0,wherein the multiple layer coating has a thickness of at least 2.0 μ
m, improved adhesion to the substrate, and an abrasion resistance less than or equal to 20 delta haze units after 500 Tabor cycles, measured according to ASTM D1044, CS10F wheels, 500 g weight. - View Dependent Claims (4)
- Cx′
- 5. A process for preparing a coating on a surface of an organic polymeric substrate having a first and a second surface by means of atmospheric pressure glow discharge deposition, the steps of the process comprising depositing a layer of a plasma polymerized, optically clear, highly adherent, organosilicon compound onto the surface of the organic polymeric substrate by atmospheric pressure glow discharge deposition of a gaseous mixture comprising a silicon-containing reagent and optionally an oxidant, wherein the conditions of the deposition are such that the layer of organosilicon compound deposited has an average thickness of at least 2.0 μ
-
8. A composite structure comprising a polymeric substrate having a first and a second surface, wherein the first and/or second surface has one or more layers of deposited organosilicon compound and one or more layers of polymeric siloxane or silicon oxide compound, said deposited organosilicon and polymeric siloxane or silicon oxide layers exceeding 2 μ
- m in total thickness.
- View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 23, 24)
Specification