Invention Grant
- Patent Title: Cage-shaped cyclopentanoic dianhydride, method for production thereof, and polyimide
- Patent Title (中): 笼形环戊酸二酐,其制备方法和聚酰亚胺
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Application No.: US14144934Application Date: 2013-12-31
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Publication No.: US08975365B2Publication Date: 2015-03-10
- Inventor: Hideo Suzuki , Takahiro Noda
- Applicant: Nissan Chemical Industries, Ltd.
- Applicant Address: JP Tokyo
- Assignee: Nissan Chemical Industries, Ltd.
- Current Assignee: Nissan Chemical Industries, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2009-095953 20090410
- Main IPC: C08G69/26
- IPC: C08G69/26 ; C08G69/40 ; C08G73/10 ; C07C61/06 ; C07C51/09 ; C07C67/08 ; C07C67/333 ; C07D493/04 ; C07D493/22

Abstract:
A cage 1,2,3,4-cyclopentanetetracarboxylic acid (1,3:2,4)-dianhydride compound represented by formula [1], and a polyimide obtained by condensing the compound with a diamine. With the compound, it is possible to provide a polyimide which shows no absorption in the ultraviolet region and is highly transparent to light, has high insulating properties, has improved heat resistance and processability, and has excellent solubility in organic solvents. (In formula [1], R1 and R2 each independently represents a hydrogen atom, a halogen atom, or a C1-10 alkyl.)
Public/Granted literature
- US20140114027A1 CAGE-SHAPED CYCLOPENTANOIC DIANHYDRIDE, METHOD FOR PRODUCTION THEREOF, AND POLYIMIDE Public/Granted day:2014-04-24
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