Claims
- 1. In a photopolymerizable film composition containing a binder, a monomer, and a photoinitiator, for use in the preparation of refractive index images, the improvement wherein said binder is a copolymer comprising the formula:
- (M).sub.w (VAc).sub.x (VOH).sub.y (CTFE).sub.z
- wherein M is a fluoromonomer, VAc is vinyl acetate, VOH is vinyl alcohol and CTFE is a chlorofluoromonomer; w, x, y and z are weight percents and w is 5 to 22%, x is 50 to 75%, y is 3 to 8%, and z is 15 to 30%; with the proviso that said copolymer contains about 3 to 35% fluorine by weight; and
- wherein said film composition comprises by weight, 25 to 90% binder, 5 to 60% monomer, and 0.1 to 10% photoinitiator system.
- 2. The composition of claim 1 wherein said fluoromonomer M is selected from the group consisting of tetrafluoroethylene and hexafluoropropylene.
- 3. The composition of claim 1 or 2 wherein said chlorofluoromonomer CTFE is chlorotrifluoroethylene.
- 4. The composition of claim 1 imaged to contain a reflection hologram.
- 5. The composition of claim 4 laminated to a glass substrate.
- 6. A laminated structure comprising, in order:
- (a) a first ply;
- (b) a photopolymerizable film imaged to contain a refractive index image, said film comprising, by weight, 25 to 90% binder, 5 to 60% monomer, and 0.1 to 10% photoinitiator system, said binder comprising a copolymer having the formula
- (M).sub.w (VAc).sub.x (VOH).sub.y (CTFE).sub.z
- wherein M is a fluoromonomer, VAc is vinyl acetate, VOH is vinyl alcohol, CTFE is a chlorofluoromonomer; w, x, y, and z are weight percents and w is 5 to 22%, x is 50 to 75%, y is 3 to 8%, and z is 15 to 30%; with the proviso that said copolymer contains about 3 to 35% fluorine by weight;
- (c) and a second ply.
- 7. The laminate of claim 6 wherein said first and second plies are glass.
- 8. The laminate of claim 6 or 7 wherein a polyvinyl butyral sheet is between said imaged photopolymerizable film and said second ply.
- 9. The laminate of claim 6 wherein said fluoromonomer M is selected from the group consisting of tetrafluoroethylene and hexafluoropropylene, and said chlorofluoromonomer CTFE is chlorotrifluoroethylene.
- 10. The laminate of claim 9 wherein said first and second plies are glass and wherein a polyvinyl butyral sheet is between said imaged photopolymerizable film and said second ply.
- 11. The laminate of claim 10 wherein a barrier layer is between said imaged photopolymerizable film and said polyvinyl butyral sheet.
- 12. The laminate of claim 11 wherein said barrier layer is a polyvinyl alcohol film.
- 13. The laminate of claim 6 wherein the refractive index image is a reflection hologram.
Parent Case Info
This is a continuation of application Ser. No. 08/146,816 filed Nov. 4, 1993, now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (1)
Number |
Date |
Country |
61-243850 |
Oct 1986 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
146816 |
Nov 1993 |
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