 Disperse dyeing of polyvinyl chloride-acetelized polyvinyl alcohol fibers |
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| Photosensitive compositions |
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| UV Stabilizers, coating compositions and composite structures obtained therefrom |
| What I claim as new and desire to secure by Letters Patent of the United States is: 1. 2,4-... |
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| Photopolymerizable compositions |
| OF THE INVENTION The addition-polymerizable compound having at least one ethylenically unsaturated ... |
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| Use of aromatic-aliphatic ketones as photo sensitizers |
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Method of stabilizing organic substrates against the action of light
| Details |
Inventors: Hara, Hiroshi; Suzuki, Yoshiaki;
Assignee: Fuji Photo Film Co., Ltd. (Minami-ashigara, JP)
Primary Examiner: Brown; Travis
Assistant Examiner:
Attorney, Agent or Firm: Sughrue, Rothwell, Mion, Zinn and Macpeak
The stability of organic substrates having an absorption maximum between 300 and 800 nm in wavelength can be improved by at least one compound represented by the formula (I); ##STR1## wherein M represents Cu, Co, Ni, Pd or Pt; X.sub.1, X.sub.2, X.sub.3 and X.sub.4 eachrepresents an oxygen or sulfur atom, R.sub.1 and R.sub.2 each represents an alkyl, an aryl, a cycloalkyl, an oxocyclalkyl or a heterocyclic group attached to the carbon atom on the chelate ring directly or through a divalent connecting group, R.sub.3 represents a hydrogen atom, an alkyl, an aryl, a cycloalkyl, an oxocycloalkyl or a heterocyclic group attached to the carbon atom on the chelate ring directly or through a connecting group whereby R.sub.1, R.sub.2 and R.sub.3 may be the same or different and R.sub.1 and R.sub.3 or R.sub.2 and R.sub.3 may combine with each other to form a 5-, 6- or 7- member ring structure. |
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DETAILED DESCRIPTION OF THE INVENTION The above mentioned and other objects of the present invention are achieved using at least one compound represented by the following general formula (I), which compound co-exists with the organic substrate.
##STR2## In the formula, M represents a metal atom selected from the group consisting of Cu, Co, Ni, Pd and Pt.
X.
sub.
1, X.
sub.
2, X.
sub.
3 and X.
sub.
4 each represents an oxygen or a sulfur atom.
R.
sub.
1 and R.
sub.
2 each represents an alkyl, an aryl, a cycloalkyl, an oxo-cycloalkyl or a heterocyclic group, each of which may be substituted or unsubstituted and attached to the carbon atom on the ring directly or through a divalent connecting group; R.
sub.
3 represents a hydrogen atom, an alkyl, an aryl, a cycloalkyl, an oxo-cycloalkyl or a heterocyclic group, each of which may be substituted or unsubstituted and attached to the carbon atom on the ring directly or through a divalent connecting group.
R.
sub.
1, R.
sub.
2 and R.
sub.
3 may be the same or different; R.
sub.
1 and R.
sub.
3, or R.
sub.
2 and R.
sub.
3 may combine with each other to form a substituted or unsubstituted, 5-, 6- or 7-membered nucleus wherein R.
sub.
1 and R.
sub.
3, or R.
sub.
2 and R.
sub.
3 each represents a group of non-metallic atoms necessary to complete such a ring.
The terms "in the presence of" or "coexistant with" as used in the specification refer not only to co-existence of the substrate material and the compound of the formula (I) in the same solution, dispersion, emulsion or layer but also to the existence of the organic substrate and the complex in adjacent layers of a multi-layered photographic material.
As long as the complex compound is associated with the organic substrate material such that it improves the light fastness of the organic substrate it is used "in the presence of" or "coexists" with the substrate for purposes of the present invention.
The alkyl group represented by R.
sub.
1, R.
sub.
2 or R.
sub.
3 is preferably a straight- or branched-chained alkyl group having 1 to 19 carbon atoms and may be substituted or unsubstituted including, for example, methyl, ethyl, propyl, butyl, hexyl, octyl, decyl, dodecyl, tetradecyl, hexadecyl and octadecyl
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