FIELD: process engineering.
SUBSTANCE: invention relates to interlayer film for sandwiched glass. Proposed film is based on polyvinyl acetate resin, plasticiser and indole compound. Indole compound features the following chemical formula:
(1), wherein R1 is alkyl group containing 1-3 carbon atoms, while R2 is hydrogen atom, alkyl group containing 1-10 carbon atoms, or aralkyl group containing 7-10 carbon atoms.
EFFECT: lower UV beams transmission with wavelength of 380-400 nm, high transmission of visible light and higher resistance to light effects.
9 cl, 12 tbl, 91 ex
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