Patent EP0252870A2 successfully refreshed from Google Patents.
EP0252870A2
Expired / Lapsed
EP
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Abrasion-resistant plasma coatings
Assignee: Battelle Memorial Institute Inc
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Filing: 1987-07-02
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Granted: —
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Expires: 2007-07-02
Abstract
Abstract Disclosed are improved abrasion-resistant plasma coatings adapted to be coated onto substrates including polymeric substrates, glass, and metal. The method for plasma coating the substrates comprises restricting the monomer to be a silane, disiloxane, silazane, or disilazane which is substituted with at least one alkoxy group per silicon atom wherein the alkoxy group is selected from methoxy groups, ethoxy groups, and mixtures thereof. The plasma coating is applied under plasma coating conditions for a time adequate to form an abrasion-resistant coating having sufficient thickness so as to possess a Taber abrasion resistance of less than 10% haze development after 100 cycles. Abrasion resistance of some disclosed coatings is less than about 5% development after 1,000 cycles.
Inventors
- 👤 Francis A. Sliemers
- 👤 Uma S. Nandi
- 👤 Philip C. Behrer
- 👤 George P. Nance
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 03:16
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/62; C; C03; C03C; C03C17/00; C03C17/28; C03C17/30; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663; Y10T428/31678
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
101 words
In a method for plasma coating a substrate with a polymerizable silicon-containing monomer under plasma coating conditions to form an abrasion-resistant coating on said substrate, the improvement which comprises: (a) restricting said monomer to be a silane, disiloxane, silazane, or disilazane which is substituted with at least one alkoxy group per silicon atom and selected from methoxy groups, ethoxy groups, and mixtures thereof; and (b) conducting said plasma coating under conditions and for a time adequate to form an abrasion-resistant coating having sufficient thickness so as to possess a Taber abrasion resistance of less than 10% haze development after 100 cycles.
Claim 2
Dependent Claim
101 words
In a method for plasma coating a substrate with a polymerizable silicon-containing monomer under plasma coating conditions to form an abrasion-resistant coating on said substrate, the improvement which comprises: (a) restricting said monomer to be a silane, disiloxane, silazane, or disilazane which is substituted with at least one alkoxy group per silicon atom and selected from methoxy groups, ethoxy groups, and mixtures thereof; and (b) conducting said plasma coating under conditions and for a time adequate to form an abrasion-resistant coating having sufficient thickness so as to possess a Taber abrasion resistance of less than 10% haze development after 100 cycles.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein said coating has a sufficient thickness so as to possess an abrasion resistance of less than 10% haze development after 200 cycles.
Claim 4
Dependent Claim
28 words
The method of claim 1 wherein said coating has a sufficient thickness so as to possess an abrasion resistance of less than 10% haze development after 500 cycles.
Claim 5
Dependent Claim
25 words
The method of claim 1 wherein said monomer is selected from the group consisting of tetramethoxysilane, methyltrimethoxysilane, dimethyldimethoxysilane, trimethylmethoxysilane, tetraethoxysilane, dimethyltetramethoxydisilazane, 1,1,3,3-tretamethyl-1,3-diethoxydisiloxane, and mixtures thereof.
Claim 6
Dependent Claim
12 words
The method of claim 1 wherein said substrate is flexible or rigid.
Claim 7
Dependent Claim
23 words
The method of claim 1 wherein said substrate is selected from the group consisting of a polymeric substrate, a metal substrate, or glass.
Claim 8
Dependent Claim
30 words
The method of claim 6 wherein said substrate is a polymeric substrate selected from the group consisting of polycarbonate, acrylic, polystyrene, styrene-acrylonitrile copolymers, polymethylpentene, vinyl, allyl diglycol carbonate, and polysulfone.
Claim 9
Dependent Claim
12 words
The method of claim 1 wherein oxygen is utilized as a comonomer.
Claim 10
Dependent Claim
23 words
The method of claim 8 wherein said oxygen comonomer is present in a proportion ranging from between about 5 and 30 volume percent.
Claim 11
Dependent Claim
30 words
The method of claim 1 wherein said plasma coating is conducted for a time adequate to form a coating having a thickness ranging from between about 0.7 and 5 microns.
Claim 12
Dependent Claim
17 words
The method of claim 10 wherein said coating thickness ranges from between about 1 and 5 microns.
Claim 13
Dependent Claim
10 words
A substrate prepared according to the process of claim 1.
Claim 14
Dependent Claim
23 words
The substrate of claim 12 wherein said substrate is selected from the group consisting of a polymeric substrate, a metal substrate, and glass.
Claim 15
Dependent Claim
10 words
The substrate of claim 13 which comprises a polymeric substrate.
Claim 16
Dependent Claim
10 words
The substrate of claim 14 which is flexible or rigid.
Claim 17
Dependent Claim
30 words
The substrate of claim 14 wherein said plasma coating is made from a monomer selected from the group consisting of tetramethoxysilane, methyltrimethoxysilane, dimethyldimethoxysilane, trimethylmethoxysilane, tetraethoxysilane, dimethyltetramethoxydisilazane, 1,1,3,3-tretamethyl-1,3-diethoxydisiloxane, and mixtures thereof.
Claim 18
Dependent Claim
16 words
The substrate of claim 14 which is formed from said monomer and oxygen as a comonomer.
Claim 19
Dependent Claim
18 words
The substrate of claim 14 wherein said oxygen comonomer is present between about 5 and 300 volume percent.
Claim 20
Dependent Claim
17 words
The substrate of claim 12 wherein said coating thickness ranges from between about 0.7 and 5 microns.
Claim 21
Dependent Claim
17 words
The substrate of claim 14 wherein said coating thickness ranges from between about 0.7 and 5 microns.
References Cited (Backward Citations)
No citation records indexed.
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