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:
May. 02, 2000
Filed:
Feb. 18, 1998
Applicant:
Inventors:
Luciano Pallini, Milan, IT;
Silvestro Costanzi, Lodi, IT;
Carlo Neri, Milan, IT;
Francesco Groppelli, Lodi, IT;
Assignee:
Great Lakes Chemical (Europe) GmbH, Fraunfeld, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C08J / ; C08J / ; C08J / ; C08J / ;
U.S. Cl.
CPC ...
252399 ; 524110 ; 524448 ; 524430 ; 524492 ;
Abstract
Solid form of a stabilizer for organic polymers consisting of one or more tocopherols, as such or in formulation, absorbed on porous polypropylene with a high crystallinity, in a quantity ranging from 30% to 85% by weight. The above tocopherols, as such or in formulation, can also be used in a mixture with other stabilizers such as, for example, secondary antioxidants containing phosphorous or sulfur, sterically hindered phenols and sterically hindered amines.