C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
99/1, 6/222, 400
C08L 71/02 (2006.01) A23L 1/307 (2006.01) C08G 65/30 (2006.01)
Patent
CA 2017716
ABSTRACT The present invention concerns high purity polyether polyol compositions and, preferably, polyethylene glycol (PEG) compositions which are useful to provide low calorie food for those who wish to control their tendency to be overweight. A process for the purification of polyethylene glycol through cation and anion ion exchange resins is known. However, this process does not remove the PEG oligomers. The present process comprises subjecting the polyether polyol compositions to membrane filtration to remove substantially all of the impurities, leaving only less than about 10 parts per million of the low molecular weight oligomers in the polyether polyol composition. 37,537-F
Grierson Jeff G.
Jernigan Robert T.
Murphy Frank H.
Wessels Wayne G.
Grierson Jeff G.
Jernigan Robert T.
Murphy Frank H.
Smart & Biggar
The Dow Chemical Company
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