Process of producing an anti-reflection optical article

• US 4,940,602 A
• Filed: 08/25/1989
• Issued: 07/10/1990
• Est. Priority Date: 02/13/1987
• Status: Expired due to Term

• Current Assignee: Toray Industries Incorporated
• Original Assignee: Toray Industries Incorporated
• Inventors: Taniguchi, Takashi, Seki, Tetsuya
• Primary Examiner(s): Pianalto, Bernard
• Application Number:
  US07/398,473
• Time in Patent Office: 319 Days
• Field of Search: 427/38, 427/40, 427/41, 427/387, 427/393.5, 427/412.1
• US Class Current: 427/489
• CPC Class Codes: C08J 2333/00 Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
• CPC Class Codes: C08J 2483/02 Polysilicates
• CPC Class Codes: C08J 7/0427 with only one layer of a composition containing a polymer binder with more layers C08J7/042
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C08J 7/044 Forming conductive coatings; Forming coatings having anti-static properties
• CPC Class Codes: C08J 7/046 Forming abrasion-resistant coatings; Forming surface-hardening coatings
• CPC Class Codes: G02B 1/111 using layers comprising organic materials
• CPC Class Codes: Y10T 428/256 Heavy metal or aluminum or compound thereof
• CPC Class Codes: Y10T 428/2993 Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31511 Of epoxy ether
• CPC Class Codes: Y10T 428/31551 Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31565 Next to polyester [polyethylene terephthalate, etc.]
• CPC Class Codes: Y10T 428/31591 Next to cellulosic
• CPC Class Codes: Y10T 428/31598 Next to silicon-containing [silicone, cement, etc.] layer
• CPC Class Codes: Y10T 428/31609 Particulate metal or metal compound-containing
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane
• CPC Class Codes: Y10T 428/31667 Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31859 Next to an aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31942 Of aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31946 : Next to second aldehyde or ketone condensation product

Abstract

An anti-reflection optical article which has an excellent anti-reflection properties, scratch resistance, impact resistance, flexibility, anti-static properties and weatherability, and which is easy to dye is disclosed. 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.

Claims

1. A process for producing an anti-reflection optical article which comprises:

providing a transparent plastic substrate on which a 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 a fluorine-containing organopolysiloxane-based film with an index of refraction lower than that of the hard coat film by not less than 0.02.

2. The process of claim 1, wherein the fluorine-containing organic silicon compound has the formula:

space="preserve" listing-type="equation">(R.sup.1 Q)SiX.sub.a Y.sub.3-a (I)

wherein R¹ is a C₁ -C₂₀ flourine-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 a hydrogen or a C₁ -C₄ lower alkyl group); and

a is an integer of 0 or 1.

3. The process of claim 1, wherein the coating composition further comprises a silica sol of a high molecular weight silic acid in the form of a colloidal dispersion.

4. A process for producing an anti-reflection optical article which comprises:

providing a transparent plastic substrate on which a 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 a fluorine-containing organopolysiloxane-based film with an index of refraction lower than that of the hard coat film by not less than 0.02, 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 or the fluorine-containing organopolysiloxane-based film is less than 80% that of the entire fluorine-containing organopolysiloxane-based film; and

subjecting the surface of the thus formed fluorine-containing organopolysiloxane-based film to an activated gas treatment.

5. The process of claim 4, wherein the activated gas treatment is a plasma treatment or a corona discharge treatment.