FIELD: chemical industry, particularly, technology of organic compounds in manufacture of artificial fibrous and film materials. SUBSTANCE: composition comprises 8-10 % of cellulose triacetate with acetyl number of 61.8%, 0.05-0.30% of organosilicon block copolymer in which ratio of arylate and siloxane links in units is 20:40, and up to 100% of methylene chloride-ethanol mixture at volume ratio of 9:1. Invention makes it possible to increase light resistance of film: number of ruptures of triacetate macromolecules after radiation is decreased by several times. EFFECT: improved consumer and service characteristics of film. 12 ex, 1 tbl
