SU568926A1 - Method of sensitization of black-and-white and color photomaterial - Google Patents

Description

(54) METHOD FOR SENSITIZATION OF BLACK AND WHITE AND COLOR PHOTOGRAPHIC MATERIALS

- CH D.,

Calls

J CH CH-CH, J

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N

The use of dyes of structure I makes it possible to obtain highly sensitive orthochromatic film photographic materials with sensitization maxima at 570–580 nm and a sensing range of 600–610 nm.

The sensitizing effect of the dyes in the presence of conventional and masking non-diffusing II or protected component III is reduced by no more than 30% as a result of the influence of the filter effect of the maximized components.

OSbND

NHdO

T if

OK

t.H

g of GL-WE (10 (1 Nz5 B-Hj-N N-Ar / lg /

OSSN

-N N Photo layers, obtained after the introduction of the dyes of structure I, are superior in size to the corresponding layers containing a mixture of sensitizers known for this spectral range: 3,39 - triethyl-5,5-diphenyloxycarbocyanine ethyl sulfate and 1,1-diphenyl- 3,3-diethyl-5, 5-di (benzthiazolyl-2) imidarcbocyaniniodide.

In addition, the feasibility of using dyes of structure I for sensitization of a wide spectral region instead of two dyes, which may influence the process of their adsorption on silver halide, one dye, is obvious. The proposed dyes are introduced into the emulsion before being irrigated in an ethanol solution, the optimum concentration of dyes being 96-10 -128-10 mole of dye per 1 mole of silver halide.

The colored, non-diffusing components are introduced into the emulsion in the form of aqueous or hydroalcoholic alkaline solutions. The components to be protected are applied as a dispersion in a 4% gelatin solution in an amount of g per liter of emulsion. The results are shown in examples 1-3 and table.

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tsHj (jper)

Ill

djHj, (t)

Example 1. In 1 liter of molten ammonia negative bromide-silver emulsion, 225 ml of a 0.024% solution of the salt of 3.3-di-sulfopropyl-5.5-diphenyl-9-ethyloxacarbocyanine betaine and 1, G, 3,3-tetraethyl 5,5 dicarbethoxy - b, 6-dichloroimidecarbocyanine. After 30 minutes after standing in a mermostat at 40 ° C, 5 ml of the sensitized emulsion was poured over 9X12 glass plates (see table, experiment I). The second batch of sensitized emulsin after

A mixture of 1- (4-phenoxy-3-sulfophenyl) -3 - stearoylaminopyrazolone-5 with the corresponding arylase derivative (II, run 1a) was introduced for 30 minutes after standing.

In the third portion of sensitized

emulsion after 30 minutes after incubation, a mixture of 1-phenyl-3- {3 a-2 (2, 4-di-g / e-amylphenoxy) butyroylamino benzoylyamio} pnrazolone-5 with the corresponding 4-methoxyphenylase derivative (III, test 16) was introduced.

The result is a highly sensitive photographic material sensible to the spectral range of 500-600 nm with a maximum at 570 nm. Example 2. According to example 1 in 1 l of the emulsion

225 ml of 0,028% solution of 3,3di-7-sulfopropyl-5, 5-diphenyl-9 - ethyloxycarbocyaninebetaine and 1, G, 3,3-tetraethyl 5, 5 - dicarbethoxy-6,6 - diiodimidocarbocyanine were introduced, and Components II and III are introduced in the second and third portions (experiments 2, 2a.and 26). A photographic material is obtained, sensitized to the spectral zone of 500-600 nm with a maximum at 570 nm.

Example 3. According to Example 1, 225 ml of a 0.022% solution of the salt of 3.3-di-y-sulfopro-5-phenyl-5,9-dimethyloxy-thiacarbocaninebetaine and 1,1-diethyl-3,3-di-n- octyl-5, 5, 6,6-tetrabromimidarbocyanine (experiments 3, Za, 36).

Oa

., H (l - CH Li

), $ 0h

CGH;

(,,

where Y is O, S;

A is alkyl;

AI is alkyl, aryl,

B and Bi-C1, Br, I, F, CN;

B2 and Vs - C1, Br, carbalkoxy;

R and RI are alkyl.

A photographic material is obtained, sensitized to the spectral zone of 500-600 nm with a maximum at 570 nm.

Claims (1)

1. USSR author's certificate №430747, 15 cl. G OZS 1/18, 1974.