EP0278060A2
Expired / Lapsed
EP
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Anti-reflection optical article and process of producing the same
Assignee: Toray Industries Inc
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Filing: 1987-10-27
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Granted: —
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Expires: 2007-10-27
Abstract
Abstract Disclosed is an anti-reflection optical article which has an excellent anti-reflection property, scratch resistance, impact resistance, flexibility, anti-static property and weatherability, and which is easy to dye. The anti-reflection optical article of the present invention comprises a transparent plastic substrate; a hard coat film formed on a surface of the substrate, the film having an index of refraction of not less than 1.52; and a fluorine-containing organopolysiloxane-based film with a thickness of 10 nm to 500 nm, which has an index of refraction lower than that of the hard coat film by not less than 0.02, and which is formed on the hard coat film.
Inventors
- 👤 Takashi Taniguchi
- 👤 Tetsuya G-317 Yamashina-Minami Danchi 25-1 Seki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 18:37
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/10; G02B1/11; G02B1/111; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/044; C08J7/046; C08J2333/00; C08J2483/00; C08J2483/02; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/31504; Y10T428/31507; Y10T428/31511; Y10T428/31551; Y10T428/31565; Y10T428/31591; Y10T428/31598; Y10T428/31609; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31855; Y10T428/31859; Y10T428/31942; Y10T428/31946
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
74 words
An anti-reflection optical article comprising: a transparent plastic substrate; a hard coat film formed on a surface of the substrate, the film having an index of refraction of not less than 1.52; and a fluorine-containing organopolysiloxane-based film with a thickness of 10 nm to 500 nm, which has an index of refraction lower than that of the hard coat film by not less than 0.02, and which is formed on the hard coat film.
Claim 2
Dependent Claim
74 words
An anti-reflection optical article comprising: a transparent plastic substrate; a hard coat film formed on a surface of the substrate, the film having an index of refraction of not less than 1.52; and a fluorine-containing organopolysiloxane-based film with a thickness of 10 nm to 500 nm, which has an index of refraction lower than that of the hard coat film by not less than 0.02, and which is formed on the hard coat film.
Claim 3
Dependent Claim
98 words
The anti-reflection optical article of claim 1, characterized in that the fluorine-containing organopolysiloxane is a polymer of a fluorine-containing organic silicon compound of the formula (I) and/or a hydrolysate thereof: (R¹Q)SiX a Y 3-a (I) wherein R¹ is a C₁ - C₂₀ fluorine-containing alkyl group which may contain one or more ether bonds and/or ester bonds; Q is a divalent organic group; X is a C₁ - C₄ alkyl group; Y is a halogen, alkoxy or RCOO⁻ group (wherein R is hydrogen or a C₁ - C₄ alkyl group); and a is an integer of 0 or 1.
Claim 4
Dependent Claim
30 words
The anti-reflection optical article of claim 1 or 2, characterized in that the content of the fluorine-containing organopolysiloxane in the fluorine-containing organopolysiloxane-based film is not less than 10% by weight.
Claim 5
Dependent Claim
22 words
The anti-reflection optical article of any one of the preceding claims, characterized in that the hard coat film comprises inorganic oxide microparticles.
Claim 6
Dependent Claim
31 words
The anti-reflection optical article of claim 4, characterized in that the inorganic oxide microparticles comprise an oxide of a metal selected from the group consisting of antimony, titanium, zirconium and tantalum.
Claim 7
Dependent Claim
54 words
The anti-reflection optical article of any one of the preceding claims, characterized in that the silicon to fluorine ratio by weight in the entire fluorine-containing organopolysiloxane-based film is 0.02 to 10, and the ratio in the uppermost region of the fluorine-containing organopolysiloxane-based film is less than 80% that of the entire fluorine-containing organopolysiloxane-based film.
Claim 8
Dependent Claim
55 words
The anti-reflection optical article of any one of the preceding claims, further comprising a second fluorine-containing organopolysiloxane-based film with a thickness of 1 nm to 30 nm on the fluorine-containing organopolysiloxane-based film, the second fluorine-containing organopolysiloxane-based film having a fluorine to silicon ratio by weight of less than 80% that of the fluorine-containing organopolysiloxane-based film.
Claim 9
Dependent Claim
87 words
A process of producing the anti-reflection optical article of claim 1, comprising the steps of: providing the transparent plastic substrate on which the hard coat film having an index of refraction of not less than 1.52 is formed; applying a liquid coating composition comprising a fluorine-containing organic silicon compound and/or a hydrolysate thereof, on the hard coat film; and curing the applied composition to form the fluorine-containing organopolysiloxane-based film with an index of refraction lower than that of the hard coat film by not less than 0.02.
Claim 10
Dependent Claim
85 words
The process of claim 8, characterized in that the fluorine-containing organic silicon compound has the formula: (R¹Q)SiX a Y 3-a (I) wherein R¹ is a C₁ - C₂₀ fluorine-containing alkyl group which may contain one or more ether bonds and/or ester bonds; Q is a divalent organic group; X is a C₁ - C₄ alkyl group; Y is a halogen, alkoxy or RCOO⁻ group (wherein R is hydrogen or a C₁ - C₄ lower alkyl group); and a is an integer of 0 or 1.
Claim 11
Dependent Claim
32 words
The process of claim 8 or 9, characterized in that the coating composition further comprises a silica sol of a high molecular weight silic acid in the form of a colloidal dispersion.
Claim 12
Dependent Claim
102 words
A process of producing the anti-reflection optical article of claim 6, comprising the steps of: providing the transparent plastic substrate on which the hard coat film having an index of refraction of not less than 1.52 is formed; applying a liquid coating composition comprising a fluorine-containing organic silicon compound and/or a hydrolysate thereof, on the hard coat film; heating the applied composition to form the fluorine-containing organopolysiloxane-based film with an index of refraction lower than that of the hard coat film by not less than 0.02; and subjecting the surface of the thus formed fluorine-containing organopolysiloxane-based film to an activated gas treatment.
Claim 13
Dependent Claim
21 words
The process of claim 11, characterized in that the activated gas treatment is a plasma treatment or a corona discharge treatment.
References Cited (Backward Citations)
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