Easily slidable polyimide film and substrate employing it

Details Easily slidable polyimide film and substrate employing it Easily slidable polyimide film and substrate employing it

2007-03-06

2007-03-06

Jackson, Monique R. (Department: 1773)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

C428S327000, C428S332000, C428S339000, C428S457000, C428S458000, C428S473500

Reexamination Certificate

active

10952219

ABSTRACT:
An easily slidable polyimide film having a polyimide surface layer comprising a polyimide which is thermoplastic and has a glass transition temperature of 190–450° C., wherein there are dispersed in the polyimide of the polyimide surface layer, in a proportion of approximately 0.5–10 mass % based on the polyimide of the polyimide surface layer, wholly aromatic polyimide particles made of a polyimide comprising at least 80 mass % of a pyromellitic acid component and a p-phenylenediamine component, and having a median size of 0.3–0.8 μm and a maximum size of no greater than 2 μm, in at least about 1 μm of the polyimide surface layer.

REFERENCES:
patent: 5972474 (1999-10-01), Tsuzuki et al.
patent: 06-100714 (1994-04-01), None
patent: 06-192446 (1994-07-01), None
patent: 2004-217907 (2004-08-01), None

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