Title:
脂環式スピロ酸二無水物の製造法
Document Type and Number:
Japanese Patent JP4328938
Kind Code:
B2
Abstract:
To provide an alicyclic tetracarboxylic dianhydride which can be used as a starting monomer of a polyimide having a high light transmittance without absorption in the ultraviolet region and having improved processability and excellent solubility in solvents.
The invention relates to 4-oxatetracyclo[5.4.0.0
COPYRIGHT: (C)2004,JPO
Inventors:
Hideo Suzuki
Application Number:
JP2002173488A
Publication Date:
September 09, 2009
Filing Date:
June 14, 2002
Export Citation:
Assignee:
Nissan Chemical Industry Co., Ltd.
International Classes:
C07D307/94; C07D493/10; C07B61/00; C07C51/09; C08G59/42; C08G73/10; C07C61/135; C07C61/29
Domestic Patent References:
JP10310640A | ||||
JP2003137843A | ||||
JP9249613A | ||||
JP9077721A | ||||
JP9291065A |
Foreign References:
US3423431 |