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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8975365 B1

PDFFull Text
Date of Patent:
Mar. 10, 2015

Filed:

Dec. 31, 2013

Cage-shaped cyclopentanoic dianhydride, method for production thereof, and polyimide

Applicant:

Nissan Chemical Industries, Ltd., Tokyo, JP;

Inventors:

Hideo Suzuki, Funabashi, JP;

Takahiro Noda, Funabashi, JP;

Assignee:

Nissan Chemical Industries, Ltd., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Kristin Vajda

Int. Cl.
CPC ...
C08G 69/26 (2006.01); C08G 69/40 (2006.01); C08G 73/10 (2006.01); C07C 61/06 (2006.01); C07C 51/09 (2006.01); C07C 67/08 (2006.01); C07C 67/333 (2006.01); C07D 493/04 (2006.01); C07D 493/22 (2006.01);
U.S. Cl.
CPC ...
C07C 61/06 (2013.01); C07C 51/09 (2013.01); C07C 67/08 (2013.01); C07C 67/333 (2013.01); C07D 493/04 (2013.01); C07D 493/22 (2013.01); C08G 73/105 (2013.01); C08G 73/1075 (2013.01); C08G 73/1078 (2013.01); C08G 69/26 (2013.01); C08G 69/40 (2013.01); C07C 2101/08 (2013.01);
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], Rand Reach independently represents a hydrogen atom, a halogen atom, or a Calkyl.)

Find Patent Forward Citations

Suzuki, Hideo. (2015). Cage-shaped cyclopentanoic dianhydride, method for production thereof, and polyimide (U.S. Patent No. 8975365). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8975365

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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