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.:
Date of Patent:
Aug. 09, 2016
Filed:
Apr. 04, 2012
Eiichi Honda, Kanagawa, JP;
Eiichi Honda, Kanagawa, JP;
MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo, JP;
Abstract
The present invention provides a polybenzoxazole resin containing a repeating unit represented by the following general formula (1): wherein Ris a tetravalent aromatic group; N atoms and O atoms which are bonded to Rare present in the form of pairs each consisting of an N atom and an O atom such that the N atom and the O atom in each pair are respectively bonded to adjacent two carbon atoms constituting the same aromatic ring in R; Ris an alkanediyl group having 1 to 6 carbon atoms; and n is an integer of 2 to 10000, which is excellent in electrical insulating properties, heat resistance, mechanical properties, physical properties, dimensional stability and the like, as well as a polybenzoxazole precursor capable of producing the polybenzoxazole resin which is excellent in solubility in solvents and storage stability.