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:
Feb. 25, 2003
Filed:
Sep. 17, 1997
Applicant:
Inventors:
Kurt Hoffmann, Lautertal, DE;
Heinz Herbst, Lautertal-Reichenbach, DE;
Rudolf Pfaendner, Rimbach/Odenwald, DE;
Hans-Jürgen Sander, Lorsch, DE;
Franciszek Sitek, Therwil, CH;
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 1/104 ; C08K 3/22 ; C08K 5/105 ; C08K 5/524 ;
U.S. Cl.
CPC ...
C08J 1/104 ; C08K 3/22 ; C08K 5/105 ; C08K 5/524 ;
Abstract
Recycled mixtures of plastics, predominantly thermoplastics, as predominantly produced in the household, in commerce and also in industry and useful material collections, can be stabilized against thermooxidative degradation by adding a combination of a sterically hindered phenol with an organic phosphite or phosphonite and an inorganic compound from the series consisting of metal oxides, hydroxides and carbonates.