Artificial gelatins of high methionine content for photographic

Details Artificial gelatins of high methionine content for photographic Artificial gelatins of high methionine content for photographic

1980-03-11

1982-02-09

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430564, 430570, 430607, 430621, 430631, 430640, 106125, G03C 106, G03C 172, G03F 500

Patent

active

043150721

ABSTRACT:
Artificial gelatins containing higher proportions of methionine than are found in natural gelatin are made by thermal polymerization of methionine with various proportions of other .alpha.-amino acids, including some proportion of aspartic acid, glutamic acid or lysine. Artificial gelatins containing as much as 40 mole percent methionine can be obtained. Proportions in the polymer can be adjusted by control of proportions in the reaction mixture. Photographic silver halide emulsions containing these artificial gelatins and photographic films employing the emulsions are also disclosed.

REFERENCES:
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patent: 3076790 (1963-02-01), Fox
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patent: 4145455 (1979-03-01), Fujimaki et al.
Carroll et al., "The Photographic Emulsion; The Silver Ion-Gelatin Equilibrium", J. Res. Nat. Bur. Std., 7:811 (1931).
Lanza et al., J. Electroanalyt. Chem., 12:320 (1966).
Russell, J. Photogr. Sci., 15:151 (1967).

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