This invention relates to amino hydroxy cyclohexenones of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each are alkyl, usually containing 1 to 20 carbon atoms. In another embodiment, the present invention is directed to the use of the above-denoted compounds as photographic silver halide developing agents and to photographic processes, products and compositions employing the same.
Amino hydroxy cyclo hexenones and their use as developing agents
申请人:POLAROID CORPORATION
公开号:EP0055900A1
公开(公告)日:1982-07-14
Novel amino hydroxy cyclohexenones have the formula
wherein R1, R2, R3 and R4 each are alkyl, usually containing 1 to 20 carbon atoms. They are useful as photographic silver halide developing agents in photographic processes and may be present in photographic products including a silver halide layer and in photographic processing compositions including aqueous alkali.