Methyl pyrrolidinone chitosan, production process and uses thereof

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United States of America Patent

PATENT NO 5378472
SERIAL NO

07910159

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Abstract

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Modified chitins and chitosans with recurring units of the formula ##STR1## wherein R denotes --NH.sub.2, --NHCOCH.sub.3 and R', with R' being present in at least 30% of the recurring units, characterized in that R' represents a group of the formula ##STR2## in a proportion of at least 90%. Due to their favourable biological properties, these materials are advantageously useful in medical and cosmetical applications.

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Patent Owner(s)

Patent OwnerAddress
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGFRANKFURTER STRASSE 250 DARMSTADT 64293

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Muzzarelli, Ricardo Ancona, IT 1 30

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