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. 13, 2018
Filed:
Sep. 23, 2015
Applicant:
Oxxynova Gmbh, Steyerberg, DE;
Inventors:
Assignee:
OXXYNOVA GMBH, Steyerberg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 11/08 (2006.01); C08J 11/24 (2006.01);
U.S. Cl.
CPC ...
C08J 11/08 (2013.01); C08J 11/24 (2013.01); C08J 2367/02 (2013.01); Y02W 30/701 (2015.05); Y02W 30/706 (2015.05);
Abstract
Organic colorants incorporated in colored PET-flake, as being obtained by shredding PET bottles, can be extracted from the PET-flake by extracting the PET-flake with ethylene glycol (EG) at ambient pressure and at the boiling temperature of EG. Pre-treating of PET-flake in EG or other suitable organic compounds prior to extraction enhances the discoloration.