Antioxidants and Methods to Maximize Performance
AssigneesUniversity of Ottawa, Alma Mater Studiorum - Università di Bologna
InventorsDerek A. Pratt, Ronak Mayankbhai Shah, Evan Anthony Haidasz, Luca Valgimigli
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Abstract
A method of preventing or reducing the level of degradation of an organic substrate is described, wherein a composition is formed that includes the organic substrate together with an effective amount of a sacrificial base and a diarylamine antioxidant.
Claims23
A method of preventing or reducing the level of degradation of an organic substrate, the method comprising:
- adding to a composition that comprises an organic substrate, effective amounts of a base and an antioxidant, wherein the antioxidant is a diaryl amine comprising at least one N-heteroaryl moiety, and having at least one electron donating group as a substituent on an aryl ring carbon.
A composition comprising a base and an antioxidant, wherein the antioxidant is a diaryl amine comprising at least one N-heteroaryl moiety, and having at least one electron donating group as a substituent on an aryl ring carbon.
A kit comprising a base and an antioxidant of Formula I, IA, ID, or II, or any salt thereof,
- wherein each of X, Y and Z are Independently a carbon or nitrogen atom;
- and wherein R1 and R2 are each independently a hydrogen or an electron donating group, but are not both hydrogen, and wherein R1 and R2 are each bonded to a carbon atom within their respective aryl ring, and
- instructions for use to scavenge at least one free radical species from within a composition containing or used to synthesize an organic substrate, thus improving the stability and/or yield of the organic substrate.
Dependencies are inferred from the claim text.