Invention Grant
- Patent Title: Method for producing polyimide film
- Patent Title (中): 聚酰亚胺薄膜的制造方法
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Application No.: US13211538Application Date: 2011-08-17
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Publication No.: US08273851B2Publication Date: 2012-09-25
- Inventor: Katsunori Yabuta
- Applicant: Katsunori Yabuta
- Applicant Address: JP Osaka
- Assignee: Kaneka Corporation
- Current Assignee: Kaneka Corporation
- Current Assignee Address: JP Osaka
- Agency: Kagan Binder, PLLC
- Priority: JP2005-053861 20050228; JP2005-229933 20050808
- Main IPC: C08G73/10
- IPC: C08G73/10

Abstract:
A method for producing a polyimide film comprises the steps of: preparing a polar organic solvent solution of a polyimide precursor obtained by mixing a tetracarboxylic acid dianhydride compound and a diamine compound; adding a dehydrating agent and an imidization catalyst to the polar organic solvent solution so as to prepare a resin solution composition; and drying the resin solution composition by heating so as to imidize the resin solution composition after flowing the resin solution composition onto a support in a casting manner, wherein diethyl pyridine is used as the imidization catalyst. According to the production method, it is possible to obtain a polyimide film which is highly productive and is excellent in the film quality such as the mechanical property, the adhesive strength, and the like.
Public/Granted literature
- US20120001367A1 METHOD FOR PRODUCING POLYIMIDE FILM Public/Granted day:2012-01-05
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