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:
Jul. 09, 2013
Filed:
Jun. 25, 2007
Abdel-ilah Basbas, Basel, CH;
Davide Alvisi, Bondeno, IT;
Robert Cordova, Madison, WI (US);
Michael Peter Difazio, Spanish Fort, AL (US);
Walter Fischer, Reinach, CH;
Joseph A. Kotrola, Mobile, AL (US);
Tiziano Nocentini, Pistoia, IT;
James Robbins, Satsuma, AL (US);
Kai-uwe Schöning, Oberwil, CH;
Abdel-Ilah Basbas, Basel, CH;
Davide Alvisi, Bondeno, IT;
Robert Cordova, Madison, WI (US);
Michael Peter Difazio, Spanish Fort, AL (US);
Walter Fischer, Reinach, CH;
Joseph A. Kotrola, Mobile, AL (US);
Tiziano Nocentini, Pistoia, IT;
James Robbins, Satsuma, AL (US);
Kai-Uwe Schöning, Oberwil, CH;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention relates to a novel process for the preparation of specific sterically hindered nitroxyl ethers from their corresponding sterically hindered nitroxyl radicals by reacting it with an aldehyde and a hydroperoxide. This nitroxyl ether formation may be carried out from different starting nitroxyl radicals, which are subsequently further reacted to the desired compounds. The compounds prepared by this process are effective as stabilizers for polymers against harmful effects of light, oxygen and/or heat and as flame-retardants for polymers.