公开(公告)号：US11700687B2

公开(公告)日：2023-07-11

申请号：US16899504

申请日：2020-06-11

Applicant: DUPONT ELECTRONICS, INC.

Inventor： Joseph Casey Johnson ,  Delanie J Losey ,  Peggy Scott ,  Christopher Dennis Simone

IPC: H05K1/03 ,  B32B15/08 ,  B32B27/28 ,  C08L79/08

CPC classification number: H05K1/036 ,  B32B15/08 ,  B32B27/281 ,  H05K1/0393 ,  C08J2479/08 ,  C08L79/08 ,  H05K2201/0154 ,  Y10T428/31681 ,  Y10T428/31721

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.

公开(公告)号：US11104801B2

公开(公告)日：2021-08-31

申请号：US16277081

申请日：2019-02-15

Applicant: DUPONT ELECTRONICS, INC.

Inventor： Kostantinos Kourtakis ,  Gene M Rossi ,  Peggy Scott

IPC: C08L79/08 ,  C08K5/00 ,  C08K5/357 ,  C08K5/3437 ,  C08G73/10 ,  C09D179/08

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 |Δa*| 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 |Δb*| 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.