Process of making abrasion wear resistant coated substrate product

• US 5,635,245 A
• Filed: 01/18/1996
• Issued: 06/03/1997
• Est. Priority Date: 09/27/1990
• Status: Expired due to Term

• Current Assignee: Morgan Chemical Products, Inc.
• Original Assignee: Monsanto Company (Bayer AG)
• Inventors: Finke, Steven J., Kimock, Fred M., Knapp, Bradley J.
• Primary Examiner(s): King, Roy V.
• Application Number:
  US08/588,530
• Time in Patent Office: 502 Days
• Field of Search: 427/249, 427/255.7, 427/419.3, 427/167, 427/109, 427/166, 428/913, 428/428, 428/408, 65/60.2, 65/60.5
• US Class Current: 427/249.7
• CPC Class Codes: B32B 17/06 comprising glass as the main or only constituent of a layer, next to another layer of a specific material
• CPC Class Codes: C03C 17/06 with metals C03C17/34, C03C17/44 take precedence
• CPC Class Codes: C03C 17/3417 all coatings being oxide coatings
• CPC Class Codes: C03C 17/3435 comprising a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 17/3441 comprising carbon, a carbide or oxycarbide
• CPC Class Codes: C03C 17/3452 comprising a fluoride
• CPC Class Codes: C03C 17/347 comprising a sulfide or oxysulfide
• CPC Class Codes: C03C 17/3476 comprising a selenide or telluride
• CPC Class Codes: C03C 17/36 at least one coating being a metal
• CPC Class Codes: C03C 17/3613 Coatings of type glass/inorganic compound/metal/inorganic compound/metal/other
• CPC Class Codes: C03C 17/3618 Coatings of type glass/inorganic compound/other inorganic layers, at least one layer being metallic
• CPC Class Codes: C03C 17/3621 one layer at least containing a fluoride
• CPC Class Codes: C03C 17/3626 one layer at least containing a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 17/3628 one layer at least containing a sulfide
• CPC Class Codes: C03C 17/3634 one layer at least containing carbon, a carbide or oxycarbide
• CPC Class Codes: C03C 17/3642 the multilayer coating containing a metal layer
• CPC Class Codes: C03C 2217/734 comprising an alternation of high and low refractive indexes
• CPC Class Codes: C03C 2217/78 Coatings specially designed to be durable, e.g. scratch-resistant
• CPC Class Codes: C23C 14/02 Pretreatment of the material to be coated C23C14/04 takes precedence
• CPC Class Codes: C23C 14/021 Cleaning or etching treatments
• CPC Class Codes: C23C 14/024 : Deposition of sublayers, e.g. to promote adhesion of the coating C23C14/027 takes precedence
• CPC Class Codes: C23C 14/025 : Metallic sublayers
• CPC Class Codes: C23C 14/06 : characterised by the coating material C23C14/0021 , C23C14/04 take precedence
• CPC Class Codes: C23C 14/0605 : Carbon
• CPC Class Codes: C23C 14/0629 : of zinc, cadmium or mercury
• CPC Class Codes: C23C 14/0635 : Carbides
• CPC Class Codes: C23C 14/0641 : Nitrides C23C14/0617 takes precedence
• CPC Class Codes: C23C 14/0647 : Boron nitride
• CPC Class Codes: C23C 14/0676 : Oxynitrides
• CPC Class Codes: C23C 14/08 : Oxides C23C14/10 takes precedence
• CPC Class Codes: C23C 14/081 : of aluminium, magnesium or beryllium
• CPC Class Codes: C23C 14/082 : of alkaline earth metals
• CPC Class Codes: C23C 14/083 : of refractory metals or yttrium
• CPC Class Codes: C23C 14/086 : of zinc, germanium, cadmium, indium, tin, thallium or bismuth
• CPC Class Codes: C23C 14/10 : Glass or silica
• CPC Class Codes: C23C 14/18 : on other inorganic substrates
• CPC Class Codes: C23C 16/0227 : by cleaning or etching
• CPC Class Codes: C23C 16/0272 : Deposition of sub-layers, e.g. to promote the adhesion of the main coating
• CPC Class Codes: C23C 16/0281 : of metallic sub-layers C23C16/029 takes precedence
• CPC Class Codes: C23C 16/26 : Deposition of carbon only
• CPC Class Codes: G02B 1/105 : Protective coatings
• CPC Class Codes: G02B 1/14 : Protective coatings, e.g. hard coatings
• CPC Class Codes: Y10S 427/103 : Diamond-like carbon coating, i.e. DLC
• CPC Class Codes: Y10S 428/913 : Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10T 428/24975 : No layer or component greater than 5 mils thick
• CPC Class Codes: Y10T 428/265 : 1 mil or less
• CPC Class Codes: Y10T 428/30 : Self-sustaining carbon mass or layer with impregnant or other layer

Abstract

The coated substrate product finds particular application in eyeglass and sunglass lenses, architectural glass, analytical instrument windows, automotive windshields and laser bar code scanners for use in retail stores and supermarkets. The product has greatly improved wear resistance for severe abrasive environments and comprises a substantially optically transparent substrate, one or more chemically vapor deposited interlayers bonded to the substrate and a chemically vapor deposited outer layer of optically transparent or substantially optically transparent hard and low friction material bonded to the interlayer and away from the substrate.

Claims

1. A method for producing a coated substrate product comprising:

(a) chemical vapor depositing over a glass substrate a substantially optically transparent interlayer devoid of alkali metal atoms and fluorine, said first interlayer being transparent to light in the visible region of 350 to approximately 750 nanometers, and adapted to form a strong chemical bond to said glass substrate; and

(b) chemical vapor depositing onto said interlayer an outer layer of substantially optically transparent diamond-like carbon which is transparent to light in the visible region of 350 to approximately 750 nanometers, said interlayer further adapted to form a strong chemical bond to the diamond-like carbon layer.

2. A method as recited in claim 1 that further comprises depositing prior to said interlayer a first layer of silicon oxide and then depositing said interlayer.

3. A method as recited in claim 1 that further comprises depositing prior to said interlayer a first layer of aluminum oxide and then depositing said interlayer.

4. A method as recited in claim 1, wherein said interlayer is formed by depositing silicon oxynitride.

5. A method as recited in claim 4, that further comprises depositing prior to said silicon oxynitride interlayer a first layer of silicon oxide and then depositing said silicon oxynitride interlayer.

6. A method as recited in claim 4, that further comprises depositing prior to said silicon oxynitride interlayer a first layer of aluminum oxide and then depositing said silicon oxynitride interlayer.