Light-stable colored transparent composite films

• US 7,229,684 B2
• Filed: 09/06/2005
• Issued: 06/12/2007
• Est. Priority Date: 06/14/1999
• Status: Expired due to Term

• Current Assignee: Eastman Performance Films, LLC (Eastman Chemical Company)
• Original Assignee: CPFilms Inc. (Eastman Chemical Company)
• Inventors: Enniss, James P., Barth, Steven A., Port, Anthony B., Packer, Elizabeth J., Lawless, Mary E.
• Primary Examiner(s): Chen; Vivian
• Application Number:
  US11/219,930
• Publication Number:
  US 20060003158A1
• Time in Patent Office: 644 Days
• Field of Search: None
• US Class Current: 428/323
• CPC Class Codes: B32B 17/10018 comprising only one glass sheet
• CPC Class Codes: B32B 17/10339 Specific parts of the laminated safety glass or glazing being colored or tinted tinted glass sheet B32B17/1011; tinted interlayer B32B17/10651
• CPC Class Codes: B32B 17/10743 containing acrylate (co)polymers or salts thereof
• CPC Class Codes: B32B 2255/10 on synthetic resin layer or on natural or synthetic rubber layer
• CPC Class Codes: B32B 2255/205 Metallic coating
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 27/20 using fillers, pigments, thixotroping agents
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: B32B 7/06 permitting easy separation
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: C03C 17/007 containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
• CPC Class Codes: C03C 2217/485 Pigments
• CPC Class Codes: C08J 2367/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds; C08J2367/06 takes precedence
• CPC Class Codes: C08J 5/18 Manufacture of films or sheets
• 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 7/043 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 7/046 Forming abrasion-resistant coatings; Forming surface-hardening coatings
• CPC Class Codes: Y10T 156/1089 of discrete laminae to single face of additional lamina
• CPC Class Codes: Y10T 428/24942 including components having same physical characteristic in differing degree
• CPC Class Codes: Y10T 428/25 : Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/256 : Heavy metal or aluminum or compound thereof
• CPC Class Codes: Y10T 428/257 : Iron oxide or aluminum oxide
• CPC Class Codes: Y10T 428/26 : Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• CPC Class Codes: Y10T 428/266 : of base or substrate
• CPC Class Codes: Y10T 428/268 : Monolayer with structurally defined element
• CPC Class Codes: Y10T 428/269 : including synthetic resin or polymer layer or component
• CPC Class Codes: Y10T 428/28 : Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/2891 : including addition polymer from alpha-beta unsaturated carboxylic acid [e.g., acrylic acid, methacrylic acid, etc.] Or derivative thereof
• CPC Class Codes: Y10T 428/31616 : Next to polyester [e.g., alkyd]
• CPC Class Codes: Y10T 428/31678 : Of metal
• CPC Class Codes: Y10T 428/31681 : Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
• CPC Class Codes: Y10T 428/31692 : Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31725 : Of polyamide
• CPC Class Codes: Y10T 428/31728 : Next to second layer of polyamide
• CPC Class Codes: Y10T 428/31786 : Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31935 : Ester, halide or nitrile of addition polymer

Abstract

Composite film structures exhibit a predetermined finished color tone comprised of a transparent film layer which exhibits a color deficiency as compared to the finished color tone, and a pigment which is visually associated with, and satisfies the color deficiency of, the film layer. Most preferably, the pigment is provided as a homogenous dispersion in a transparent color-matching layer positioned adjacent to the film layer. Thus, when the film and color-matching layers are viewed collectively as a unit, the perceived color tone will be that of the finished predetermined color tone. That is, the color-matching layer provides visually an additive effect on the perceived color of the composite film structure.

Claims

1. A transparent film which exhibits a predetermined finished color tone comprising:

a color-deficient, dyed, polymer film layer which exhibits a color deficiency in at least one of hue, chroma, and value as compared to said predetermined finished color tone; and

,

a pigment having an average particle size of less than about 0.50 microns which is visually associated with said polymer film layer, wherein said pigment exhibits a matching color tone satisfying said color deficiency of said polymer film layer to thereby impart to said transparent film said predetermined finished color tone when said polymer film layer and said pigment are viewed collectively as a unit.

2. The transparent film of claim 1, wherein said pigment is dispersed throughout said transparent film.

3. The transparent film of claim 2, wherein said pigment comprises iron oxide, lead, chrome, ultramarine, iron blue, or cadmium.

4. The transparent film of claim 2, wherein said at least one pigment has an average particle size of less than about 0.10 microns.

5. The transparent film of claim 2, wherein said at least one pigment has an average particle size of less than about 0.05 microns.

6. The transparent film of claim 2, wherein said polymer film layer comprises a polymer selected from the group consisting of poly(ethylene terephthalate), polyacrylic, polyimide, polyamide, and polyolefin.

7. The transparent film of claim 2, wherein said polymer film layer comprises poly(ethylene terephthalate).

8. The transparent film of claim 2, wherein said transparent film has a thickness of 0.25 mils to 14 mils.

9. The transparent film of claim 2, wherein said transparent film has a thickness of 0.5 mils to 1.0 mils.

10. The transparent film of claim 2, wherein said transparent film has a thickness of 1.0 mils to 3.0 mils.

11. The transparent film of claim 2, wherein said transparent film further comprises an adhesive layer adjacent said polymer film layer.

12. The transparent film of claim 11, wherein said adhesive layer comprises an acrylic pressure sensitive adhesive.

13. The transparent film of claim 11, wherein said adhesive layer comprises a pigment having an average particle size of less than about 0.50 microns.

14. The transparent film of claim 2, wherein said transparent film further comprises a hardcoat adjacent said polymer film layer.

15. The transparent film of claim 2, wherein said transparent film further comprises a metallized layer on said polymer film layer.

16. The transparent film of claim 1, wherein said transparent film further comprises an additional layer laminated to said polymer film layer.

17. The transparent film of claim 2, wherein said transparent film further comprises an additional layer laminated to said polymer film layer.

18. A layer of glass having disposed thereon a transparent film which exhibits a predetermined finished color tone, wherein said transparent film comprises:

a color-deficient, dyed, polymer film layer which exhibits a color deficiency in at least one of hue, chroma, and value as compared to said predetermined finished color tone; and

,

a pigment having an average particle size of less than about 0.50 microns which is visually associated with said polymer film layer, wherein said pigment exhibits a matching color tone satisfying said color deficiency of said polymer film layer to thereby impart to said transparent film said predetermined finished color tone when said polymer film layer and said pigment are viewed collectively as a unit.