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:
Jan. 07, 2014
Filed:
Mar. 15, 2012
Theo Smit, Heidelberg, DE;
Laurence Pottie, Köln, DE;
Simone Schillo, Ludwigshafen, DE;
Volker Frenz, Altleiningen, DE;
Roelof Van Der Meer, Halsteren, NL;
Theo Smit, Heidelberg, DE;
Laurence Pottie, Köln, DE;
Simone Schillo, Ludwigshafen, DE;
Volker Frenz, Altleiningen, DE;
Roelof van der Meer, Halsteren, NL;
BASF SE, Ludwigshafen, DE;
Abstract
This invention relates to a process for stabilizing polymers with oligomeric carbodiimides containing at least one heterocyclic end group and stabilizers. The oligomeric carbodiimides may be compounds of the general formula (I): where A, Aare each independently, identically or differently, hydrocarbon groups having 2 to 20 carbon atoms, B, Bare each independently, identically or differently, heterocycles, C-C-alcohols, polyetherols, polyesterols, amines, polyether amines, polyester amines, thioalcohols, polyether thiols, polyester thiols; R, Rare each independently, identically or differently: n is an integer from 2 to 100, and A, A, Band Bmay each be substituted at any desired position by C-C-alkyl, C-C-alkenyl, C-C-alkynyl, C-C-alkoxy, carbonyl oxygen (═O) or halogen, with the proviso that at least one Bor Bsubstituent is a heterocyclic end group. The invention also relates to compositions of the oligomeric carbodiimides and mixtures.