Azetidinium-functional polysaccharides and uses thereof
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United States of America Patent
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Aug 28, 2012
Grant Date -
Nov 25, 2010
app pub date -
Oct 17, 2008
filing date -
Oct 19, 2007
priority date (Note) -
Expired
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Abstract
The present invention relates to polysaccharides that have been modified by providing azetidinium functionality thereto. Such functionality can be provided by crosslinking a polysaccharide with a resin having azetidinium functional groups. In one or more aspects, the polysaccharide can comprise one or more of starch, guar gum, alginate or derivatives thereof. Polysaccharides having azetidinium functionality according to the present invention are suitable for multiple uses. Such uses include, but are not limited to, removal of one or more solid materials from a liquid, beneficiation of an ore, removal of metallic ions from a liquid; providing oil from bitumen; and removal of mercury from synthetic gypsum. Other uses of the functionalized polysaccharides of the present invention include hydroseeding, dust control and erosion control.
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