Layered body including inorganic substrate and polyamic acid cured product
AssigneeToyobo Co., Ltd.
InventorsKaya TOKUDA, Tetsuo OKUYAMA, Naoki WATANABE, Hiroyuki WAKUI, Harumi YONEMUSHI, Denichirou MIZUGUCHI
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Abstract
Provided is a layered body including glass and a polyamic acid heat-cured product that is readily releasable from an inorganic substrate after being heated at 250° C. A layered body including an inorganic substrate and a polyamic acid heat-cured product, the layered body being characterized by a weight average molecular weight of 30,000 or greater for the polyamic acid, and a peel strength of 0.3 N/cm or weaker between the polyamic acid heat-cured product layer and the inorganic substrate, after the layered body has been heated at 250° C.
Claims7
A layered body comprising an inorganic substrate and a polyamic acid heat-cured product, wherein
- a weight average molecular weight of the polyamic acid is 30,000 or more,
- a peel strength between the inorganic substrate and the polyamic acid heat-cured product layer is 0.3 N/cm or less after the layered body has been heated at 250° C., and
- the polyamic acid heat-cured product contains one or more structures selected from the group consisting of a structure represented by Formula 1
- and a structure represented by Formula 2
Dependencies are inferred from the claim text.