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:
Feb. 01, 2022
Filed:
Feb. 24, 2020
Saudi Arabian Oil Company, Dhahran, SA;
Haleema Alamri, Thuwal, SA;
Aziz Fihri, Paris, FR;
Mohamed Bouhrara, El Jadida, MA;
Enrico Bovero, Dhahran, SA;
Bashayer Mishari, Dhahran, SA;
Saudi Arabian Oil Company, Dhahran, SA;
Abstract
A corrosion-indicating material and methods of producing and using the corrosion-indicating material are provided. The corrosion-indicating material comprises a cured product of reacting a bisphenol A diglycidyl ether epoxy (DGEBA) resin with a curing agent, the curing agent comprising a 1,10-phenanthroline derivative having formula (I): where: Rand Rare independently selected from —NH; —NH(CH)NH, where a is 1, 2, or 3; —OC(═O)(CH)NH, where b is 1, 2, or 3; and —H; Rand Rare either: non-joined monovalent radicals each independently chosen from —H, —NH, and (C-C)heterohydrocarbyls comprising at least one primary amine or at least one secondary amine; or joined as a single divalent radical, the single divalent radical being a (C-C)heterohydrocarbyl comprising at least one primary amine or at least one secondary amine; and at least one of R, R, R, and Ris not —H.