Photosensitive composition, hologram recording medium, hologram optical element, optical device, and electronic device

Patent metadata

Field	Value
Publication number	US-2025370407-A1
Application number	US-202318875018-A
Country	US
Kind code	A1
Filing date	May 19, 2023
Priority date	Jun 21, 2022
Publication date	Dec 4, 2025
Grant date	—

Abstract

Provided is a photosensitive composition that can achieve suppression of decoloring of a sensitizing dye during unexposed storage.A photosensitive composition contains a polymerizable compound, an electron-donating initiator, a dye whose decoloring reaction is promoted in the presence of an epoxy group, and a cationic polymerizable compound having at least one structure selected from the group consisting of a cyclic ester structure and a 3-membered ring ether structure adjacent to a cyclic aliphatic skeleton in a molecule.

First claim

1 . A photosensitive composition comprising:
a polymerizable compound; an electron-donating initiator; a dye whose decoloring reaction is promoted in the presence of an epoxy group; and a cationic polymerizable compound having at least one structure selected from the group consisting of a cyclic ester structure and a 3-membered ring ether structure adjacent to a cyclic aliphatic skeleton in a molecule.

2 . The photosensitive composition according to claim 1 ,
wherein the cationic polymerizable compound contains at least one selected from the group consisting of a cationic polymerizable compound represented by the following General Formula (13), a cationic polymerizable compound represented by the following General Formula (14), a cationic polymerizable compound represented by the following General Formula (15-1), a cationic polymerizable compound represented by the following General Formula (15-2), a cationic polymerizable compound represented by the following General Formula (16-1), a cationic polymerizable compound represented by the following General Formula (16-2), a cationic polymerizable compound represented by the following General Formula (17), and a cationic polymerizable compound represented by the following General Formula (17-2):

where R 51 is a monovalent group, e is an integer of any one of 0 to 8, and in a case where e is an integer of any one of 2 to 8, R 51 may be the same as or different from each other,

where R 61 is a monovalent group, f is an integer of any one of 0 to 10, and in a case where f is an integer of any one of 2 to 10, R 61 may be the same as or different from each other,

where R 71 is a monovalent group, g1 is an integer of any one of 0 to 8, and in a case where g1 is an integer of any one of 2 to 8, R 71 may be the same as or different from each other,

where R 73 and R 74 are each a monovalent group, R 72 is a single bond or a linking group, g2 and g3 are each independently an integer of any one of 0 to 7, in a case where g2 is an integer of any one of 2 to 7, R 73 may be the same as or different from each other, and in a case where g3 is an integer of any one of 2 to 7, R 74 may be the same as or different from each other,

where R 81 is a monovalent group, h1 is an integer of any one of 0 to 10, and in a case where h1 is an integer of any one of 2 to 10, R 81 may be the same as or different from each other,

where R 83 and R 84 are each a monovalent group, R 82 is a single bond or a linking group, h2 and h3 are each independently an integer of any one of 0 to 9, in a case where h2 is an integer of any one of 2 to 9, R 83 may be the same as or different from each other, and in a case where h3 is an integer of any one of 2 to 9, R 84 may be the same as or different from each other,

where R 91 , R 92 , R 93 , and R 94 are each a monovalent group, i1 is an integer of any one of 0 to 6, i2 is an integer of any one of 0 to 4, in a case where i1 is an integer of any one of 2 to 6, R 93 may be the same as or different from each other, and in a case where i2 is an integer of any one of 2 to 4, R 94 may be the same as or different from each other, and

where R 9a , R 9b , R 9c , R 9d , R 9e , R 9f , R 9g , R 9h , R 9i , R 9j , R 9k , R 9l , R 9m , R 9n , R 9o , and R 9p are each a monovalent group, A and B are each a divalent group having one or more atoms, n is 0 or 1, in a case where n is 0, m1 and m2 are each 1, and in a case where n is 1, m1 and m2 are each 0.

3 . The photosensitive composition according to claim 1 ,
wherein the cyclic aliphatic skeleton has a 5- or 6-membered ring.

4 . The photosensitive composition according to claim 1 ,
wherein the cationic polymerizable compound having a cyclic ester structure in a molecule contains at least one of a cationic polymerizable compound having a 6-membered cyclic ester structure in a molecule or a cationic polymerizable compound having a 7-membered cyclic ester structure.

5 . The photosensitive composition according to claim 1 ,
wherein the dye does not have a primary amine or a secondary amine in a coloring state, and is capable of having a primary amine or a secondary amine in a decoloring state.

6 . The photosensitive composition according to claim 1 , further comprising
an electron-accepting initiator.

7 . The photosensitive composition according to claim 1 ,
wherein the electron-donating initiator contains an organic boron salt-based initiator.

8 . The photosensitive composition according to claim 1 ,
wherein the cationic polymerizable compound contains a cationic polymerizable plasticizer having the cyclic ester structure.

9 . The photosensitive composition according to claim 1 ,
wherein the polymerizable composition contains a radically polymerizable aliphatic photopolymerizable compound.

10 . The photosensitive composition according to claim 1 ,
wherein the polymerizable compound contains a polymerizable compound having dibenzocarbazole as a mother skeleton and having one or two or more (meth)acrylic groups.

11 . The photosensitive composition according to claim 1 ,
wherein the cationic polymerizable compound includes a plasticizer.

12 . A photosensitive composition comprising:
a polymerizable compound; an electron-donating initiator; a dye whose decoloring reaction is promoted in the presence of an epoxy group; and a cationic polymerizable compound having at least one structure selected from the group consisting of a 4-membered cyclic ether structure, a cyclic ester structure, and a 3-membered ring ether structure adjacent to a cyclic aliphatic skeleton in a molecule.

13 . A hologram recording medium comprising:
a base material; and a photosensitive layer containing the photosensitive composition according to claim 1 .

14 . A hologram optical element comprising
the hologram recording medium according to claim 13 , wherein the polymerizable compound and the cationic polymerizable compound are polymerized.

15 . An optical device comprising the hologram optical element according to claim 14 .

16 . An electronic device comprising the hologram optical element according to claim 14 .

Assignees

• Sony Group Corp

Inventors

• Yamaguchi Shuhei
• Ohe Takahiro

Classifications

• G03H2001/0264

  Organic recording material · CPC title

• G03H2250/39

  Protective layer · CPC title

• G03H2001/0088

  for video-holography, i.e. integrating hologram acquisition, transmission and display · CPC title

• G03H2260/12

  Photopolymer · CPC title

• C09B21/00

  Thiazine dyes · CPC title