Light-stable colored transparent composite films

• US 6,699,578 B2
• Filed: 04/18/2002
• Issued: 03/02/2004
• 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): RICKMAN, HOLLY C
• Application Number:
  US10/124,779
• Publication Number:
  US 20020114942A1
• Time in Patent Office: 684 Days
• Field of Search: 428/323,328,329,457,426,430,435,436,441,458,460,461
• 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 composite transparent structure comprising a glass substrate, and a transparent film transparent film which exhibits a predetermined finished color tone, wherein said transparent film comprises:

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

at least one pigment having an average particle size of less than about 0.50 μ

m which is visually associated with the film layer and exhibits a matching color tone satisfying the color deficiency of said film layer to thereby impart to the transparent film the predetermined finished color tone when the color-deficient dyed film layer and the at least one pigment are viewed collectively as a unit.

2. The composite transparent structure of claim 1, wherein said at least one pigment is homogeneously dispersed as a blend throughout the transparent film layer.

3. The composite transparent structure of claim 2, wherein the film layer has a yellow color deficiency, and wherein the at least one pigment includes a yellow-colored pigment homogeneously dispersed as a blend through the transparent film layer.

4. The composite transparent structure of claim 3, wherein the pigment is an iron oxide.

5. The composite transparent structure of claim 1, further comprising a protective coating layer on the film layer.

6. The composite transparent structure of claim 1, wherein said film layer includes first and second film layers laminated to one another.

7. The composite transparent structure of claim 6, further comprising a protective coating layer on the film layer.

8. The composite transparent structure of claim 1 or 6, wherein said at least one pigment has an average particle size of less than about 0.10 μ

m.

9. The composite transparent structure of claim 1 or 6, wherein said at least one pigment has an average particle size of less than about 0.05 μ

m.

10. A process for making a composite transparent structure comprised of a glass substrate and a transparent film which exhibits a predetermined finished color tone, said process comprising the steps of:

(a) providing a color-deficient dyed transparent film layer which exhibits a color deficiency in at least one of hue, chroma and value as compared to the predetermined finished color tone;

(b) visually associating with said film layer at least one pigment having an average particle size of less than about 0.50 μ

m and exhibiting a matching color tone satisfying the color deficiency of said film layer to thereby impart to the transparent film the predetermined finished color tone when the color-deficient dyed film layer and the at least one pigment are viewed collectively as a unit; and

(c) adhering the transparent film to a glass substrate to form said composite transparent structure.

11. The process of claim 10, wherein step (b) includes dispersing the pigment throughout the film layer.

12. The process of claim 10, wherein the at least one pigment has an average particle size of less than about 0.10 μ

m.

13. The process of claim 10, wherein the at least one pigment has an average particle size of less than about 0.05 μ

m.

14. A composite transparent structure comprising a glass substrate, and a transparent film which exhibits a predetermined finished color tone, wherein said transparent film comprises:

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

at least one pigment having an average particle size of less than about 0.50 μ

m which is visually associated with the film layer and exhibits a matching color tone satisfying the color deficiency of said film layer to thereby impart to the transparent film the predetermined finished color tone when the color-deficient dyed film layer and the at least one pigment are viewed collectively as a unit, wherein

said film layer includes a metallized layer.

15. The composite transparent structure of claim 14, wherein said at least one pigment is homogeneously dispersed as a blend throughout the transparent film layer.

16. The composite transparent structure of claim 15, wherein the film layer has a yellow color deficiency, and wherein the at least one pigment includes a yellow-colored pigment homogeneously dispersed as a blend through the transparent film layer.

17. The composite transparent structure of claim 16, wherein the pigment is an iron oxide.

18. The composite transparent structure of claim 14, further comprising a protective coating layer on the film layer.

19. The composite transparent structure of claim 14, wherein said film layer includes first and second film layers laminated to one another.

20. The composite transparent structure of claim 19, further comprising a protective coating layer on the film layer.

21. The composite transparent structure of claim 14, 15 or 20, wherein said at least one pigment has an average particle size of less than about 0.10 μ

m.

22. The composite transparent structure of claim 14, 19 or 20, wherein said at least one pigment has an average particle size of less than about 0.05 μ

m.

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

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

at least one pigment homogeneously dispersed as a blend throughout the transparent film layer and having an average particle size of less than about 0.50 μ

m, said at least one pigment being is visually associated with the film layer and exhibiting a matching color tone satisfying the color deficiency of said film layer to thereby impart to the transparent film the predetermined finished color tone when the color-deficient dyed film layer and the at least one pigment are viewed collectively as a unit, wherein

said film layer includes a metallized layer.

24. The transparent film of claim 23, wherein the film layer has a yellow color deficiency, and wherein the at least one pigment includes a yellow-colored pigment homogeneously dispersed as a blend through the transparent film layer.

25. The transparent film of claim 24, wherein the pigment is an iron oxide.

26. The transparent film of claim 23, further comprising a protective coating layer on the film layer.

27. The transparent film of claim 23, wherein said film layer includes first and second film layers laminated to one another.

28. The transparent film of claim 27, further comprising a protective coating layer on the film layer.

29. The transparent film of claim 23, 27 or 28, wherein said at least one pigment has an average particle size of less than about 0.10 μ

m.

30. The transparent film of claim 23, 27 or 28, wherein said at least one pigment has an average particle size of less than about 0.05 μ

m.