Modified dense star polymers
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United States of America Patent
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Aug 15, 1989
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N/A
app pub date -
Feb 8, 1988
filing date -
Feb 8, 1988
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Expired
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Abstract
Dense star polymers on immobilized cores are very useful as ion-exchange resins and chelation resins. For example, an aminated form of chloromethylated styrene/divinyl benzene copolymer can be employed as an immobilized core compound and reacted successively with methyl acrylate via a Michael addition reaction and then with ethylenediamine to form a first generation dense star polymer or dendrimer. These reactions can then be repeated to form second and third generation dendrimers.
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