High strength capsules, process of preparing and using the same
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United States of America Patent
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Dec 26, 2000
Grant Date -
N/A
app pub date -
Jul 1, 1998
filing date -
Jul 7, 1997
priority date (Note) -
Expired
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Abstract
In the formation of capsules having a polyanionic polysaccharide core and a polycationic polysaccharide membrane layer, improved binding of the polycationic polysaccharide is achieved by including polyvalent ions, especially calcium ions, at the membrane forming step.
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