Oxidized polymeric carbohydrates and products made thereof

Details Oxidized polymeric carbohydrates and products made thereof Oxidized polymeric carbohydrates and products made thereof

2006-01-17

2006-01-17

Wilson, James O. (Department: 1623)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

C536S018700, C536S030000, C536S045000, C536S047000, C536S055100

Reexamination Certificate

active

06987181

ABSTRACT:
The present invention relates to a polysaccharide having functional groups, wherein said groups are aldehyde groups formed at positions C2and/or C3as well as at position C6of the anhydroglucose units of the polysaccharide chain. Preferably the polysaccharide is a cellulosic fibrous material whose primary and secondary hydroxyl groups of the cellulose are oxidized into aldehyde groups at least in part by means of TEMPO oxidation and periodate oxidation.The invention also concerns a paper or nonwoven comprising the above polysacaride. According to the invention a relative wet strength of more than 10% can be achieved.

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