Claims
- 1. A photosensitive composition for volume hologram recording used for recording an interference fringe produced by the interference of laser beams or lights having excellent coherence as a fringe with a different refractive index, said composition comprising the components as follows:
- (a) a radical polymerizable compound represented by the formula: ##STR4## wherein R.sub.1 and R.sub.2 is a terminal radical polymerizable group bonded to the phenyl ring of the diarylfluorene skeleton through at least one oxyethylene chain, oxypropylene chain, urethane group or amide group, and X.sub.1 to X.sub.4, respectively, indicate H, (C.sub.1 -C.sub.4) alkyl group, (C.sub.1 -C.sub.4) alkoxy group, amino group, dialkylamino group, hydroxyl group, carboxyl group or halogen atom:
- (b) a cationic polymerizable compound having compatibility with component (a);
- (c) a radical photopolymerization initiator which is sensitized to a laser beam having a specific wavelength or light having a specific wavelength and excellent coherence to polymerize the component (a);
- wherein an average refractive index of the component (a) is larger than that of the component (b); and
- (d) a cationic photopolymerization initiator having low photosensitivity to light having a specific wavelength, which is sensitive to light having a different wavelength to polymerize the component (b).
- 2. The composition according to claim 1, wherein a sensitizer contained in the radical photopolymerization initiator (c) is a cyanine dye.
- 3. The composition according to claim 1, wherein an active radical-generating compound contained in the radical photopolymerization initiator (c) is a diaryl iodonium salt.
- 4. The composition according to claim 1 which further comprises a polymer binder.
- 5. The composition according to claim 1, wherein the component (b) is a liquid compound at ambient temperature.
- 6. The composition according to claim 5, wherein a sensitizer contained in the radical photopolymerization initiator (c) is a cyanine dye.
- 7. The composition according to claim 5, wherein an active radical-generating compound contained in the radical photopolymerization initiator (c) is a diaryl iodonium salt.
- 8. The composition according to claim 5, which further comprises a polymer binder.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-084521 |
Apr 1993 |
JPX |
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CROSS REFERENCE TO A RELATED APPLICATION
This is a file wrapper continuation application of copending application Ser. No. 08/226,583, filed Apr. 12, 1994, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (13)
Number |
Date |
Country |
0335629 |
Oct 1989 |
EPX |
0487086 |
May 1992 |
EPX |
A0509512 |
Oct 1992 |
EPX |
0509512 |
Oct 1992 |
EPX |
1-244680 |
May 1991 |
JPX |
3-259176 |
Nov 1991 |
JPX |
4-181944 |
Jun 1992 |
JPX |
4-325508 |
Nov 1992 |
JPX |
5-32807 |
Feb 1993 |
JPX |
5-070528 |
Mar 1993 |
JPX |
A05070528 |
Mar 1993 |
JPX |
5-94014 |
Apr 1993 |
JPX |
93-01526 |
Jan 1993 |
WOX |
Non-Patent Literature Citations (1)
Entry |
Webster's New International Dictionary of the English Language, Second Ed. (.COPYRGT. 1959) p. 81. |
Continuations (1)
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Number |
Date |
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Parent |
226583 |
Apr 1994 |
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