Method for stabilizing organic base material to light

Details Method for stabilizing organic base material to light Method for stabilizing organic base material to light

1988-02-12

1990-02-27

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Stabilizing

430 17, 430216, 430270, 430495, 430517, 430551, 430559, 406 22, 524 84, C09D 1100

Patent

active

049045741

ABSTRACT:
A method of stabilizing organic base materials to light by allowing an organic base material to coexist with at least one type of metal complex which can be represented by the following general formula: ##STR1## wherein R.sup.1 to R.sup.4 are each independently hydrogen atoms, halogen atoms, cyano groups, hydroxyl groups or alkyl groups, aryl groups, cycloalkyl groups or heterocyclic groups which are bonded directly or indirectly via a divalent linking group to a carbon atom on the benzene ring. The R.sup.1 to R.sup.4 substituents may be the same or different, and moreover, two adjacent substituents from among the R.sup.1 to R.sup.4 substituents may be joined together to form a ring. Furthermore, the two R.sup.4 substituents may also be joined together to form a ring.
The R.sup.5 and R.sup.6 substituents are independently hydrogen atoms, alkyl groups, alkylthio groups, aryl groups, arylthio groups, heterocyclicthio groups or cyano groups and they may be the same or different. In addition, the R.sup.5 and R.sup.6 substituents may be joined together to form a ring.

REFERENCES:
patent: 4246329 (1981-01-01), Hara et al.
patent: 4713314 (1987-12-01), Namba et al.
Gerhard N. Schrauzer and Horst Kisch, Stabilization of 1,3-Dipoles by II. Complex Formation, Journal of the American Chemical Society, Apr. 18, 1973, p. 2502.

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