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:
Apr. 28, 2015
Filed:
Jul. 15, 2010
Prasanna K. Jog, Midland, MI (US);
Robert D. Swindoll, Clute, TX (US);
Nile A. Mead, Lake Jackson, TX (US);
Pradeep Jain, Lake Jackson, TX (US);
Alec Y. Wang, Lake Jackson, TX (US);
Job D. Guzman, Houston, TX (US);
Prasanna K. Jog, Midland, MI (US);
Robert D. Swindoll, Clute, TX (US);
Nile A. Mead, Lake Jackson, TX (US);
Pradeep Jain, Lake Jackson, TX (US);
Alec Y. Wang, Lake Jackson, TX (US);
Job D. Guzman, Houston, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The invention provides a solution polymerization process comprising: A) polymerizing one or more monomers in the presence of a solvent that comprises a heavy hydrocarbon solvent and a light hydrocarbon solvent, to form a polymer solution; B) transferring the polymer solution to a Liquid-Liquid Separator, without adding heat to the solution, and wherein the pressure of the polymer solution is actively reduced in a controlled manner prior to, or within, the Liquid-Liquid Separator, to induce at least two liquid phases, a polymer-rich phase and a solvent-rich phase, and wherein the concentration of polymer in the polymer-rich phase is higher than that in the polymer solution transferred to the Liquid-Liquid Separator; and C) removing the solvent-rich phase.