Dupont Electronics, Inc.

Peggy Scott

Kostantinos Kourtakis

Gene M Rossi

Christopher Dennis Simone

Joseph Casey Johnson

Delanie J Losey

In a first aspect, a polymer film includes a polyimide. The polyimide includes one or more dianhydrides and one or more diamines. Each of the dianhydrides and diamines is selected from the group consisting of crankshaft monomers, flexible monomers, rigid rotational monomers, rigid non-rotational monomers, and rotational inhibitor monomers. The polymer film has a Dof 0.005 or less, a water absorption of 2.0% or less and a water vapor transport rate of 50 (g&#xd7;mil)/(m&#xd7;day) or less. In a second aspect, a metal-clad laminate includes the polymer film of first aspect and a first metal layer adhered to a first outer surface of the polymer film. In a third aspect, an electronic device includes the polymer film of the first aspect.

Polymer films and electronic devices

In a first aspect, a low haze polyimide film includes, a dianhydride, a diamine, and a color-tuning compound. The low haze polyimide film has a thickness in a range of from 1 to 150 um, an a* closer to zero with a |&#x394;a*| greater than 0.2 and a b* that is at most 0.2 further away from zero, or a b* closer to zero with a |&#x394;b*| greater than 0.2 and an a* that is at most 0.2 further away from zero, when compared to a low haze polyimide film of the same dianhydride and diamine composition, but without the color-tuning compound, and a haze of less than 4%. In a second aspect, an electronic device includes the low haze polyimide film of the first aspect.

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Circleville, OH, United States of America

Peggy Scott