Abstract: In a first aspect, a polymer film includes a polyimide, wherein the polyimide includes two or more dianhydrides, including a first monomer that is a crankshaft monomer and a second monomer that is a rigid non-rotational monomer, and one or more diamines including a third monomer that is a flexible monomer. The crankshaft monomer and the flexible monomer include a combined 65 to 99 mol % of the total of all three monomers. The rigid non-rotational monomer includes 1 to 35 mol % of the total of all three monomers. The polymer film has a dielectric dissipation loss factor, Df, of 0.005 or less, a water absorption of 2.0% or less and a water vapor transport rate of 50 (g×mil)/(m2×day) or less.

Abstract: In a first aspect, a polymer film includes a polyimide, wherein the polyimide includes two or more dianhydrides, including 15 to 35 mol % of a first monomer that is a crankshaft monomer and 15 to 35 mol % of a second monomer that is a flexible monomer, and two or more diamines, including 1 to 35 mol % of a third monomer that is a rotational inhibitor monomer and 15 to 49 mol % a fourth monomer that is a rigid rotational monomer, wherein the mol % of each monomer is based on the total of all four monomers. The polymer film has a dielectric dissipation loss factor, Df, of 0.005 or less, a water absorption of 2.0% or less and a water vapor transport rate of 50 (g×mil)/(m2×day) or less.

Abstract: 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 Df of 0.005 or less, a water absorption of 2.0% or less and a water vapor transport rate of 50 (g×mil)/(m2×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.

Abstract: 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 |?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 |?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.

Abstract: 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 Df of 0.005 or less, a water absorption of 2.0% or less and a water vapor transport rate of 50 (g×mil)/(m2×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.

Abstract: 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 |?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 |?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.