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:
Jun. 05, 1990
Filed:
Feb. 22, 1989
Regis Mercier, Lyon, FR;
Bernard Sillion, Lyon, FR;
Centre d'Etude des Materiaux Organiques pour Technologies Avancees, Solaize-Vernaison, FR;
Abstract
Thermosetting quinazolone resins, their preparation and their applications re described. These thermosetting quinazolone resins can be defined as having the following general formula: ##STR1## in which Ar.sup.1 is a bivalent mono- or polycyclic aromatic radical and Ar.sup.2 is a bivalent aromatic radical of several simple aromatic rings bound two by two by atoms or bivalent groups. These Ar.sup.1 and Ar.sup.2 radicals are chosen so that the melting or emollescence temperature is between 80.degree. C. and 170.degree. C. The resins can be prepared from condensation of an ethynylarylbenzoxazinone with an aromatic diamine containing flexibilizing groups. These quinazolone resins can be polymerized in bulk in order to prepare adhesives or composite matrices in particular.