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Title:
METHOD FOR PRODUCING MULTILAYERED CO-EXTRUDED POLYIMIDE FILM
Document Type and Number:
WIPO Patent Application WO/2012/081479
Kind Code:
A1
Abstract:
Provided is a method for producing multilayered co-extruded polyimide film, with which the partial sticking of a polyimide layer onto a substrate that occurs when a polyamide acid solution is cast by multilayered co-extrusion onto the substrate in order to produce a multilayered polyimide film by multilayered co-extrusion is prevented by adding an imidation catalyst to only the polyamide acid solution that comes into direct contact with the substrate.

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Inventors:
MATSUTANI TERUO
KONDO YASUTAKA
Application Number:
PCT/JP2011/078343
Publication Date:
June 21, 2012
Filing Date:
December 07, 2011
Export Citation:
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Assignee:
KANEKA CORP (JP)
MATSUTANI TERUO
KONDO YASUTAKA
International Classes:
B29C41/32; C08G73/10; B29C48/08; B29C48/21; B29K79/00; B29L9/00; H05K1/03
Domestic Patent References:
WO2007099801A12007-09-07
Foreign References:
JP2007290256A2007-11-08
JP2008188843A2008-08-21
JP2008188778A2008-08-21
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
Patent business corporation Hara [Kenzo] international patent firm (JP)
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