Process for production of motion picture film with sound track c

Details Process for production of motion picture film with sound track c Process for production of motion picture film with sound track c

1975-05-19

1977-01-18

Klein, David

Gas separation: apparatus

Apparatus for selective diffusion of gases

96 39, 427131, G03C 724, G03C 514, G03G 1900

Patent

active

040037436

ABSTRACT:
A magnetic sound track layer can be formed with good adherence on the emulsion layer of a photographic material for motion picture film by coating from a liquid composition comprising ferromagnetic powders, a binder, and at least 1% by weight, based on the weight of said ferromagnetic powders, of p-toluenesulfonic acid and at least 3% by weight, based on the weight of said powder of glacial acetic acid. A motion picture film where the magnetic sound track contains p-toluenesulfonic acid and glacial acetic acid.

REFERENCES:
patent: 3713887 (1973-01-01), Stimson

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