Movie film cleaning solvent

Details Movie film cleaning solvent Movie film cleaning solvent

C - Chemistry, Metallurgy

11

D

C11D 7/50 (2006.01) G03C 11/06 (2006.01) C11D 7/28 (2006.01)

Patent

CA 2247613

This invention relates to a solvent system and process for cleaning photographic film, especially cellulose triacetate polymer movie film. The solvent system comprises n-propyl bromide and an alkyl bromide in which the alkyl group contains 4 to 7 carbon atoms.

L'invention porte sur un système de solvants et le procédé associé, utilisés pour le nettoyage des pellicules photographiques et en particulier des pellicules cinématographiques de polymère de triacétate de cellulose. Ce système de solvants comprend un bromure de n-propyle et un bromure d'alkyle, dans lequel le groupe alkyle contient 4 à 7 atomes de carbone.

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