Process for the oxidation of di-, tri-, Oligo- and polysaccharides into polyhydroxycarboxylic acids, catalyst used and products thus obtained
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United States of America Patent
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Jan 15, 1991
Grant Date -
N/A
app pub date -
Jan 28, 1987
filing date -
Jan 30, 1986
priority date (Note) -
Expired
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Abstract
Process for the selective oxidation of di-, tri-, oligo- and polysaccharides comprising a reducing terminal function of the aldose type into polyhydroxycarboxylic acids, wherein the oxidation is carried out in an alkaline medium by means of an oxygen-containing gas, in the presence of a noble metal based catalyst selected from the group constituted by palladium, platinum, rhodium and osmium and fixed on an inert support, said catalyst being 'doped' with one or several metals, or promoters, of Groups IV, V or VI of the Periodic Table.
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