Responsive polymer networks and methods of their use
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United States of America Patent
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Aug 17, 1999
Grant Date -
N/A
app pub date -
Jan 3, 1996
filing date -
Jun 19, 1995
priority date (Note) -
Expired
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Abstract
A responsive polymer network exhibiting the property of reversible gelation in response to a change in an environmental stimulus is provided. The aqueous solution of the network polymer, comprises about 0.01 to 20 wt % by weight of a responsive component and about 0.01 to 20 wt % by weight of a structural component capable of supporting and interacting with the responsive component. The aqueous composition exhibits at least a five-fold increase in viscosity upon gelation. The gelation may be triggered by a change in an environmental stimulus, such as temperature, pH and ionic strength.
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