C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 7/50 (2006.01) G03C 11/06 (2006.01) C11D 7/24 (2006.01) C11D 7/28 (2006.01)
Patent
CA 2247614
This invention relates to a solvent system and process for cleaning cellulose triacetate polymer camera film. The solvent system comprises n-propyl bromide and a mix of an alkyl bromide in which the alkyl group contains 4 to 7 carbon atoms and an alkane containing 6 to 7 carbon atoms.
L'invention porte sur un système de solvants et le procédé associé utilisés pour le nettoyage des films cinématographiques de polymère de triacétate de cellulose. Ledit système de solvants comprend du bromure de n-propyle et un mélange de bromure d'alkyle dans lequel le groupe alkyle comporte de 4 à 7 atomes de carbone, et d'un alcane contenant de 6 à 7 atomes de carbone.
Azarnia Farah D.
Lee Burnell
Albemarle Corporation
Macrae & Co.
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