Method of forming a photographic coupler capable of forming a wa

Details Method of forming a photographic coupler capable of forming a wa Method of forming a photographic coupler capable of forming a wa

1992-06-24

1993-11-23

Springer, David B.

Chemistry: fischer-tropsch processes; or purification or recover

Group viii metal containing catalyst utilized for the...

Iron containing catalyst

430382, 430542, 430543, 430544, 518251, 518252, 5182676, C07D25702, G03C 726

Patent

active

052645827

ABSTRACT:
A method of preparing a washout photographic coupler comprising a coupler moiety (COUP) containing a substituted or unsubstituted ballasted releasing group (A) selected from aryloxy, thioaryloxy, heterocyclicoxy, and thioheterocyclicoxy releasing groups having attached thereto a phenoxy timing group containing a photographically useful group (PUG), the releasing group capable of elimination electron transfer to release the timing group, the method comprising:

REFERENCES:
patent: 4248962 (1981-02-01), Lau
patent: 4409323 (1983-10-01), Sato et al.
patent: 4482629 (1984-11-01), Nakagawa et al.
patent: 4861701 (1989-08-01), Burns et al.
patent: 4959299 (1990-09-01), Sakanoue et al.

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