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1. (WO2017040127) CHROMATOGRAPHY OF POLYMERS WITH REDUCED CO-CRYSTALLIZATION

Pub. No.:    WO/2017/040127    International Application No.:    PCT/US2016/048268
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Thu Aug 25 01:59:59 CEST 2016
IPC: G01N 30/54
G01N 30/88
Applicants: DOW GLOBAL TECHNOLOGIES LLC
Inventors: CONG, Rongjuan
PARROTT, Albert
HOLLIS, Cherry
CHEATHAM, Charles Michael
Title: CHROMATOGRAPHY OF POLYMERS WITH REDUCED CO-CRYSTALLIZATION
Abstract:
A temperature gradient chromatography, and apparatus for the same, said method comprising the following: a) dissolving a composition comprising at least one polymer in at least one solvent, to form a polymer solution; b) injecting at least a portion of the polymer solution onto a support material and wherein the support material has a CI from 0.70 to 1.50; c) cooling the support material at a rate greater than, or equal to, 0.2°C/min; d) increasing the temperature of the support material to elute at least some of the polymer; e) generating the chromatogram.