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Class Information
Number: 568/870
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Hydroxy containing (h of -oh may be replaced by a group ia or iia light metal) > Acyclic > Polyhydroxy > Purification or recovery > Of glycerol > Ion exchange or sorbent material utilized
Description: Processes which include utilizing an ion exchange material or a material capable of absorbing or adsorbing impurities or undesired components from glycerol.

Patents under this class:

Patent Number Title Of Patent Date Issued
8648219 Method for purifying glycerin and products obtained therefrom Feb. 11, 2014
8569548 Process for the preparation of alkylene glycols Oct. 29, 2013
8445733 1,3 butylene glycol with reduced odor May. 21, 2013
7951980 Process and apparatus for the recovery of ethylene glycol in the production of polyethylene terephthalate May. 31, 2011
7667081 Method for purification of glycerol Feb. 23, 2010
7534923 Method for purification of glycerol from biodiesel production May. 19, 2009
6909022 Process of removing organic halogen-containing compounds Jun. 21, 2005
6603048 Process to separate 1,3-propanediol or glycerol, or a mixture thereof from a biological mixture Aug. 5, 2003
6187973 Glycol purification Feb. 13, 2001
5710350 Process for the production of diglycerol Jan. 20, 1998
5105029 Process for recovering a lower alcohol from a catechol-lower alcohol reaction product solution Apr. 14, 1992
4960953 Process for preparing polyglycerols Oct. 2, 1990
4554390 Method for harvesting algae Nov. 19, 1985
4105701 Purification of materials containing carbonyl contaminants Aug. 8, 1978

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