Photopolymerizable composition and photosensitive thermal recording material
AssigneeFuji Photo Film Co., Ltd.
InventorsKozo Nagata, Shintaro Washizu
Life of this patent
Estimating the term…
Abstract
The invention discloses a photopolymerizable composition comprising at least one, ethylenic unsaturated bond-containing compound, a hexaaryl-biimidazole compound, and an organoboron compound represented by a specific general formula; and discloses a photosensitive thermal recording material having a recording layer that contains the photopolymerizable composition. The photopolymerizable composition and the photosensitive thermal recording material of the invention are highly sensitive to UV rays and visible to IR rays falling within a wavelength range that includes wavelengths not longer than 450 nm, and are effective for decoloring a dye component that absorbs the rays falling within the wavelength range.
Claims18
A photopolymerizable composition comprising at least one ethylenic unsaturated bond-containing compound, a hexaaryl-biimidazole compound, and an organoboron compound of the following general formula (1):
- wherein R1, R2, R3 and R4 each independently represents an aliphatic group, an aromatic group, a heterocyclic group, or a group represented by the following general formula (2);
- and M+represents a group capable of forming a cation;
- wherein R5, R6 and R7 each independently represents an aliphatic group or an aromatic group.
A photosensitive thermal recording material having recording layers on a support, in which at least one recording layer contains the following:
- (a) a color-forming component A encapsulated in thermo-responsive microcapsules,
- (b) a substantially colorless compound B which has a site which reacts with the color-forming component A to form a color and which exists outside the thermo-responsive microcapsules, and
- (c) a photopolymerizable composition;
- and in which the photopolymerizable composition (c) comprises the following:
- (i) at least one, ethylenic unsaturated bond-containing compound,
- (ii) a hexaaryl-biimidazole compound, and
- (iii) an organoboron compound of the following general formula (1):
- wherein R1, R2, R3 and R4 each independently represents an aliphatic group, an aromatic group, a heterocyclic group, or a group of the following general formula (2);
- and M+ represents a group capable of forming a cation;
- wherein R5, R6 and R7 each independently represents an aliphatic group or an aromatic group.
Dependencies are inferred from the claim text.