Primer for electrochromic device with plastic substrate

• US 5,471,554 A
• Filed: 11/12/1993
• Issued: 11/28/1995
• Est. Priority Date: 11/12/1993
• Status: Expired due to Term

• Current Assignee: PPG Industries Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Incorporated (Nouryon BV)
• Inventors: Rukavina, Thomas G., Slobodnik, John B.
• Primary Examiner(s): Healy, Brian
• Application Number:
  US08/152,337
• Time in Patent Office: 746 Days
• Field of Search: 359/265, 359/267, 359/269, 359/270, 359/273, 359/274, 359/275, 385/131, 385/130, 385/129, 385/141, 385/143, 385/145, 385/147
• US Class Current: 385/131
• CPC Class Codes: C08J 2433/00 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 7/0423 with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
• 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: C23C 14/024 Deposition of sublayers, e.g. to promote adhesion of the coating C23C14/027 takes precedence
• CPC Class Codes: C23C 14/083 of refractory metals or yttrium
• CPC Class Codes: G02B 6/1221 made from organic materials
• CPC Class Codes: G02F 1/155 Electrodes

Abstract

Novel acrylic acid copolymer primer compositions are disclosed for bonding electroconductive metal oxide films to plastic substrates for electrochromic articles.

Claims

1. An article of manufacture comprising:

a. A transparent polymeric substrate;

b. a primary layer comprising a copolymer of acrylic acid and a substituted acrylate disposed on a surface of said substrate;

c. an electroconductive metal oxide film deposited on said primer layer; and

d. an electrochromic film deposited on said electroconductive metal oxide.

2. An article according to claim 1, wherein said polymeric substrate is selected from the group consisting of polycarbonates, polymer prepared from diethylene glycol bis(allyl carbonate) and acrylics.

3. An article according to claim 1, wherein said substrate is a polymer prepared from a monomer selected from the group consisting of diethylene glycol bis(allylcarbonate), bisphenol A and methyl methacrylate.

4. An article according to claim 1, wherein said primer comprises a copolymer of acrylic acid and a comonomer selected from the group consisting of hydroxyethylacrylate, cyanoethylacrylate methyl methacrylate, and mixtures of such acrylates.

5. An article according to claim 4, wherein said primer is a copolymer of acrylic acid and methyl methacrylate in a molar ratio of from about 3:

1 to about 1;

3.

6. An article according to claim 1, wherein said electroconductive metal oxide film is selected from the group consisting of tin oxide and indium/tin oxide.

7. An article according to claim 6, wherein said electroconductive metal oxide film is indium/tin oxide in a weight ratio of about 90:

10 indium;

tin.

8. An article of manufacture comprising:

a. a transparent substrate consisting of the polymerization product of diethylene glycol bis(allyl carbonate);

b. a primer layer of a copolymer of acrylic acid and a substituted acrylate monomer disposed on a surface of said substrate; and

c. an electroconductive metal oxide film deposited on said primer layer.

9. An article according to claim 8, wherein said primer layer is a copolymer of acrylic acid and methyl methacrylate.

10. An article according to claim 8, wherein said electroconductive film is indium/tin oxide.