 Polyvinyl butyral ink formulation |
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| Intaglio printing ink and method of employing the same |
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| Photosensitive material |
| In the present invention, there is employed as a monomer (a) a compound of the following general ... |
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| Apparatus for the reduction of image intensity variations in a continuously variable reducing copier |
| Having thus described our invention, what we claim as new and desire to secure by Letters Patent is:... |
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| Non-impact single and multi-ply printing method and apparatus |
| Accordingly, it is an object of the present invention to provide a non-impact single and multi-ply ... |
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| Sensitization of glyoxylate photoinitiators |
| OF THE PRESENT INVENTION The compositions curable by actinic radiation according to the invention ... |
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| Immersible oxygen absorbing capsule for ink jet fluid supply |
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| Aromatic-aliphatic ketones useful as photoinitiators |
| What is claimed is: 1. A compound of the formula ##STR13## wherein A is --CO-- or --CO--CO--; X is -... |
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| Aqueous ink for ink-jet printing |
| OF THE PREFERRED EMBODIMENTS An embodiment of an aqueous ink for ink-jet printing according to the ... |
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Photopolymerizable compositions
| Details |
Inventors: Kondoh, Syunichi; Matsufuji, Akihiro; Umehara, Akira;
Assignee: Fuji Photo Film Co., Ltd. (Minami-ashigara, JP)
Primary Examiner: Briggs, Sr.; Wilbert J.
Assistant Examiner:
Attorney, Agent or Firm: Sughrue, Rothwell, Mion, Zinn and Macpeak
A photopolymerizable composition comprising (1) an addition-polymerizable compound having at least one ethylenically unsaturated double bond and (2) a photopolymerization initiator as essential components, the improvement which comprises the photopolymerization initiator comprising a combination of (a) a 5-isoxazolone represented by the general formula (1) and (b) an aromatic carbonyl compound, a dialkylamino aromatic carbonyl compound represented by any of formulae (2) to (5), a compound represented by the formula (6) or 2-(.alpha.-thioxophenetylidene)-3-methylnaphtho[1,2-d][1,3]-thiazoline: ##STR1## wherein in the formula (1), A.sup.1 and A.sup.2 each represent an alkyl group, an alkylcarbonyl group, an alkoxycarbonyl group, an aryl group, an arylcarbonyl group or a hydrogen atom and may be the same or different; in the formulae (2) to (5) R.sup.1 and R.sup.2 each represent an alkyl group and may be the same or different, R.sup.3 represents an alkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group or a 5- or 6-membered hetero-aromatic ring, and X represents a substituent having a Hammett's .sigma. value in the range of about -0.9 to +0.7; and in the formula (6) R.sup.4 represents an alkyl group, or an alkenyl group, R.sup.5 represents an alkyl group, an aryl group, a thienyl group or a furyl group, and Z represents an atomic group necessaary to form a nitrogen-containing heterocyclic ring; is disclosed. |
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DETAILED DESCRIPTION OF THE INVENTION The addition-polymerizable compound having at least one ethylenically unsaturated double bond (hereafter "ethylenic compound") converts into a high molecular polymer having a linear or cross-linked structure by addition-polymerization as a function of the light decomposition products of the photopolymerization initiator when the photopolymerizable composition is exposed to actinic radiation whereby the hardness of the photopolymerizable composition increases and the solubility thereof in organic and/or inorganic solvents decreases or it is rendered completely insoluble.
Representative examples of the ethylenic compound include monomers and as well as prepolymers, i.
e.
, dimers, trimers, tetramers and oligomers thereof with other compounds (i.
e.
, polymers or polycondensates having a molecular weight of about 10,000 or less), mixtures thereof, copolymers thereof having a low degree of polymerization, etc.
Examples of the ethylenic compound include unsaturated carboxylic acids and salts thereof, esters of unsaturated carboxylic acids and aliphatic polyhydroxy compounds (hereafter "aliphatic polyols", e.
g.
, having 2 to 20, preferably 2 to 10 carbon atoms, and 2 to 8, preferably 2 to 6 hydroxy groups) or aromatic polyhydroxy compounds (hereafter "polyhydric phenols"), and oligoesters obtained by esterification reactions of di- or polybasic carboxylic acids, di- or polyhydroxy compounds and unsaturated carboxylic acids.
A suitable range for the number of carbon atoms in the esters of the ethylenically unsaturated double bond-containing organic acids is 3 to about 20, preferably 3 to 6.
When the photopolymerizable composition is a substantially non-fluid composition at a room temperature (about 10.
degree.
C.
to about 40.
degree.
C.
), it is possible to use ethylenic compounds having a boiling point of about 100.
degree.
C.
or more at atmospheric pressure.
When the photopolymerizable composition is a fluid composition at a room temperature, it is possible to use ethylenic compounds having a boiling point of about 30
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