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. 07, 2004
Filed:
Aug. 22, 2002
Applicant:
Inventors:
Harald Koch, Burgheim, DE;
Christoph Kröhnke, Breisach-Oberrimsingen, DE;
Alexander Lichtblau, Augsburg, DE;
Matthias Zäh, Gersthofen, DE;
Assignee:
Clariant Finance (BVI) Limited, Tortola, VG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K 5/34 ; C08K 5/3452 ; C08K 5/09 ; C08K 5/10 ; C08K 5/12 ;
U.S. Cl.
CPC ...
C08K 5/34 ; C08K 5/3452 ; C08K 5/09 ; C08K 5/10 ; C08K 5/12 ;
Abstract
The invention relates to synergistic stabilizer compositions comprising Hindered Amine Stabilizers (HAS), phenolic antioxidants, and, if appropriate, UV-absorbers, for thermoplastic polymers, especially for polyolefin pipes and other polyolefin molding materials, which are in prolonged contact with water. These mixtures show superior long term performance as measured by standard test methods such as oxidation induction time (OIT).