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:
Dec. 22, 2009
Filed:
Jan. 31, 2006
Rakesh Kumar Gupta, Kingsport, TN (US);
Allen Lynn Crain, Kingsport, TN (US);
Daniel William Klosiewicz, Kingsport, TN (US);
Scott Ellery George, Kingsport, TN (US);
Kab Sik Seo, Kingsport, TN (US);
Rakesh Kumar Gupta, Kingsport, TN (US);
Allen Lynn Crain, Kingsport, TN (US);
Daniel William Klosiewicz, Kingsport, TN (US);
Scott Ellery George, Kingsport, TN (US);
Kab Sik Seo, Kingsport, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
Processes for the recovery of a sulfopolyester polymer from an aqueous dispersion and a sulfopolyester concentrate are provided. Particularly, a sulfopolyester concentrate, from which the sulfopolyester may be recovered and reused, are formed by processes such as evaporation and/or nanofiltration. Final recovery of the sulfopolyester may be achieved by further evaporation of water and/or salt precipitation. In addition, the recovered sulfopolyester and articles manufactured from the recovered sulfopolyester are also provided.