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:
Mar. 17, 2026
Filed:
Jul. 06, 2021
Dow Global Technologies Llc, Midland, MI (US);
Craig F. Gorin, Midland, MI (US);
David L. Malotky, Midland, MI (US);
Daniel L. Dermody, Midland, MI (US);
Christopher J. Tucker, Midland, MI (US);
Jin Wang, Midland, MI (US);
Anurima Singh, Lake Jackson, TX (US);
Jill M. Martin, Freeport, TX (US);
Thomas Tomczak, Midland, MI (US);
Hari Katepalli, Midland, MI (US);
DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US);
Abstract
A method for reducing an amount of a contaminant in a thermoplastic polymer comprising shearing a combination comprising a contaminated thermoplastic polymer in melt form, water, and a dispersing agent where the shearing causes a portion of the contaminant to be removed from the contaminated thermoplastic polymer (e.g. moved into an aqueous phase with the water or into another separate phase from the water and the polymer), and after shearing, separating the thermoplastic from the aqueous phase to recover thermoplastic polymer.