Polyester film for capacitors

Details Polyester film for capacitors Polyester film for capacitors

2006-04-04

2006-04-04

Chen, Vivian (Department: 1773)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

C428S323000, C428S328000, C428S329000, C428S330000, C428S331000, C428S480000, C428S910000, C264S288400, C264S290200

Reexamination Certificate

active

07022407

ABSTRACT:
A film which is a biaxially oriented film comprising polyethylene-2,6-naphthalenedicaboxylate as a principal component, having a thermal strain ratio RMD (150) in the machine direction of the film at a temperature of 150° C. is −1.5%≦RMD (150)≦0.0% when the thermal strain ratio RMD (T) in the machine direction of the film at a temperature T° C. based on the length LMD (t) in the machine direction (MD) of the film at a temperature t° C. is defined byin-line-formulae description="In-line Formulae" end="lead"?RMD(T)={[LMD(T)−LMD(35)]/LMD(35)}×100(%),in-line-formulae description="In-line Formulae" end="tail"?excellent in insulation characteristics without lowering processing characteristics, especially the characteristics during hot-pressing and suitable as a dielectric for capacitors.

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