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:
Sep. 21, 2010
Filed:
Oct. 02, 2006
Michèle Gerster, Binningen, CH;
Hans-rudolf Meier, Riehen, CH;
Gerrit Knobloch, Magden, CH;
Pierre Rota-graziosi, Mulhouse, FR;
Michèle Gerster, Binningen, CH;
Hans-Rudolf Meier, Riehen, CH;
Gerrit Knobloch, Magden, CH;
Pierre Rota-Graziosi, Mulhouse, FR;
Ciba Corporation, Tarrytown, NY (US);
Abstract
The instant invention discloses a process for preventing contact discoloration of substrates coming into contact with elastomers and stabilizing elastomers to prevent oxidative, thermal, dynamic, light-induced and/or ozone-induced degradation, which comprises incorporating into the elastomers, or applying to these, at least a compound of the formula (I) wherein Ris C-Calkyl, Ris C-Calkyl, or Rand Rtogether with the carbon atom to which they are attached form an unsubstituted or with C-Calkyl substituted C-Ccycloalkyl ring; Ris hydrogen or —CH—S(O)—R, Rand Rindependently of each other are unsubstituted or with cyano substituted C-C-alkyl; C-Cphenylalkyl, unsubstituted or with halogen, hydroxyl, cyano or C-Calkyl substituted phenyl or naphthyl; benzothiazolyl or —R—CO—R, Ris C-Calkylene, Ris C-Calkyl, and m is 0, 1 or 2. The instant invention discloses also novel compounds of the formula (I), new mixtures of compounds of the formula (I) and compositions thereof in elastomers.