Invention Grant
US07973125B2 Method of evaluating polymide dissolution rate, method of producing polymide, and polymide obtained using same methods
有权
评价聚酰亚胺溶解速度的方法，使用相同方法得到的聚酰亚胺的制造方法和聚酰亚胺
- Patent Title: Method of evaluating polymide dissolution rate, method of producing polymide, and polymide obtained using same methods
- Patent Title (中): 评价聚酰亚胺溶解速度的方法，使用相同方法得到的聚酰亚胺的制造方法和聚酰亚胺
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Application No.: US11575779Application Date: 2006-03-31
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Publication No.: US07973125B2Publication Date: 2011-07-05
- Inventor: Gouki Ohtake , Kazuhiro Ishibashi , Keijirou Honda , Naoki Okuda , Nori Sasaki
- Applicant: Gouki Ohtake , Kazuhiro Ishibashi , Keijirou Honda , Naoki Okuda , Nori Sasaki
- Applicant Address: JP Tokyo
- Assignee: Hitachi Chemical Co., Ltd.
- Current Assignee: Hitachi Chemical Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2005-102245 20050331
- International Application: PCT/JP2006/306863 WO 20060331
- International Announcement: WO2006/106934 WO 20061012
- Main IPC: C08G69/26
- IPC: C08G69/26
Abstract:
A method of evaluating the dissolution rate of a polyimide by Raman spectroscopy, wherein the Raman spectral intensity I(a) of imide groups contained within the polyimide is measured, and I(a) is then compared with the Raman spectral intensity I(b) of imide groups contained within a polyimide with a known dissolution rate. The polyimides are preferably obtained using an aromatic tetracarboxylic dianhydride and/or an aromatic diamine.
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