Non-ultraviolet-absorbing peptizer for silver halide emulsions

Details Non-ultraviolet-absorbing peptizer for silver halide emulsions Non-ultraviolet-absorbing peptizer for silver halide emulsions

1992-08-27

1994-02-08

Baxter, Janet C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430639, 430641, G03C 1015

Patent

active

052847446

ABSTRACT:
Silver halide emulsions can be prepared by precipitating the silver halide grains in the presence of a peptizer comprising a water-soluble starch, said peptizer exhibiting an absorbance of less than 1.0 in the wavelength region 200 to 400 nm when measured at a concentration of 2 g/L through a 1 cm transmission path. A useful water-soluble starch having this property is potato starch. Silver halide elements sensitive in the short ultraviolet spectral region can be prepared with these emulsions.

REFERENCES:
patent: 2343650 (1944-03-01), Fallesen
patent: 4717650 (1988-01-01), Ikeda et al.
patent: 4798775 (1989-01-01), Yagi et al.
Encyclopedia of Polymer Science and Engineering, vol. 7, John Wiley & Sons, Inc., 1987, pp. 602-610.
Research Disclosure, vol. 308, Dec. 1989, Item 308119, Section IX, Vehicles and vehicle extenders.

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