Alma Mater Studiorum-Universitá Di Bologna

Hilti Aktiengesellschaft

Queen's University at Kingston

University of Ottawa

Universita Di Bologna

Luca Valgimigli

Derek Andrew Pratt

Armin Pfeil

Didier Gigmes

Denis Bertin

Jason J Hanthorn

Ronak Mayankbhai Shah

Evan Anthony Haidasz

Johannes Brinkhorst

Derek A Pratt

Derek Pratt

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.

Antioxidants and methods to maximize performance

A compound of Formula I, Formula IA, Formula IB, or Formula II, or an acid or base addition salt thereof, and use of these compounds as antioxidants. In one embodiment, a compound of Formula II, wherein each of X, Y, and Z are independently a carbon or nitrogen atom; Rand Rare each independently a hydrogen or an electron donating group, but are not both hydrogen, and wherein R, and Rare each bonded to a carbon atom in their own respective aryl ring.

Substituted diarylamines and use of same as antioxidants

The use of a mixture of 5-pyrimidinol derivatives with sterically hindered phenol derivatives for adjusting the reactivity and the gel time of resin mixtures and reactive resin mortars based on radically polymerizable compounds is described. Furthermore, a resin mixture containing the inhibitor combination, a reactive resin mortar containing this resin mixture and two-component mortar systems with the reactive resin mortar according to the invention and a hardener with improved stability in storage and good low-temperature hardening properties are also described. The resin mixture according to the invention is suitable in particular for chemical fastening of construction elements in boreholes in various substrates.

Inhibitor combination, resin mixture containing same and use of same

Growing community of inventors

Bologna, Italy

Luca Valgimigli