Starch derivatives and a method for their preparation
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United States of America Patent
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Feb 21, 2012
Grant Date -
May 19, 2005
app pub date -
Feb 17, 2003
filing date -
Feb 15, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to novel transglycosylation products and their preparation. The transglycosylation products according to the invention are prepared from starch derivatives, such as esters or ethers of starch. The products are obtained by reacting a starch derivative with an alcohol in the presence of an acid catalyst. The forming product is separated by precipitation or by removing any unreacted alcohol by evaporation. In the products according to the invention the good properties of starch derivatives, such as the excellent water resistance of esters, are combined with the versatility of transglycoside products. The products can be used as adhesives, in which case they are formulated, for example as hot-melt adhesives, and as comonomers, prepolymers or macroinitiators in the preparation of polymers.
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