Back to results
US 9,630,384 B2Granted
Durable extruded dyed polyester films
Assignee3M Innovative Properties Company
InventorsChristopher A. Haak, Joseph M. Zoborowski
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to dyed polyester films whose color remains stable after prolonged exposure to UV radiation and to methods of making such dyed polyester films.
Claims10
An optically clear window film comprising
- a clear first outer layer comprising polyethylene terephthalate (PET),
- a core layer comprising PET and one or more dyes chosen from Pigment Yellow 147, Pigment Red 177, Pigment Blue 60, Pigment Black 31, Pigment Red 149, and Pigment Red 122, and
- a clear second outer layer comprising PET,
- wherein the one or more dyes are dissolved in the PET of the core layer,
- wherein the window film is fade-resistant after more than 300 MJ/m2 of total irradiance integrated over the band 295 nm to 385 nm and time.
2 more elements
Dependencies are inferred from the claim text.