Polysaccharide aldehydes prepared by oxidation method and...

Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives

Reexamination Certificate

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C536S063000, C536S084000, C536S095000, C536S099000, C536S102000, C536S104000, C536S105000, C536S110000

Reexamination Certificate

active

10421973

ABSTRACT:
Polysaccharide aldehydes are prepared using selective oxidation involving the use of nitroxyl radical mediated aqueous oxidation with a limited amount of oxidant and defined reaction conditions. These polysaccharide aldehyde derivatives having maximum effective aldehyde and minimal carboxylic acid levels making them especially useful as wet, temporary wet and dry strength additives for paper.

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