CPC C08J 5/18 (2013.01) [B32B 7/023 (2019.01); B32B 27/08 (2013.01); B32B 27/281 (2013.01); B32B 27/34 (2013.01); B32B 2250/02 (2013.01); B32B 2250/24 (2013.01); B32B 2255/10 (2013.01); B32B 2270/00 (2013.01); B32B 2307/418 (2013.01); C08J 2379/08 (2013.01)] | 20 Claims |
1. A laminated film comprising a first layer, and a second layer laminated to at least one surface of the first layer,
the first layer comprising a poly(amide-imide) copolymer having a weight average molecular weight of about 50,000 grams/mole to about 100,000 grams/mole, and
the second layer comprising a poly(amide-imide) copolymer, polyimide, or a combination thereof having a weight average molecular weight of about 10,000 grams/mole to about 45,000 grams/mole, wherein an amide content of the poly(amide-imide) copolymer included in the second layer is less than or equal to about 30 mol % based on a total number of moles of structural units of the poly(amide-imide) copolymer.
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