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US 2021/0230425 A1Published application
Polyamide resin film and resin laminate using the same
AssigneeLG Chem, Ltd.
InventorsIl Hwan CHOI, Soonyong PARK, Young Ji TAE, Youngseok PARK, Bi Oh RYU
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Abstract
The present invention relates to a polyamide resin film having improved light resistance by minimizing color difference variation rate due to long-term ultraviolet irradiation, and a resin laminate using the same.
Claims20
A polyamide resin film in which a color difference variation rate (Eab1) value on the 1st day (n=1) of ultraviolet irradiation according to the following Mathematical Formula 1 is 2.5 or less:
- Eabn={(Ln−Ln−1)2+(an−an−1)2+(bn−bn−1)2}1/2 [Mathematical Formula 1]
- wherein,
- Ln−1 is a lightness index of the polyamide resin film on the (n−1)th day of ultraviolet irradiation,
- an−1 and bn−1 are color coordinates of the polyamide resin film on the (n−1)th day of ultraviolet irradiation,
- Ln is a lightness index of the polyamide resin film on the n-th day of ultraviolet irradiation, and
- an and bn are color coordinates of the polyamide resin film on the n-th day of ultraviolet irradiation.
3 more elements
Dependencies are inferred from the claim text.