Quaternary polymers

Details Quaternary polymers Quaternary polymers

2006-08-31

2010-11-23

Jiang, Shaojia Anna (Department: 1623)

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

Organic compounds

Carbohydrates or derivatives

Reexamination Certificate

active

07838643

ABSTRACT:
The present invention relates to novel quaternized polymers, especially of chitin/chitosan type, and to carbohydrate polymers carrying quaternized ammonium groups, especially piperazinium groups. Such polymers are characterized i.a. by improved solubility characteristics.

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Li, H. et al., Colloids and Surfaces A: Physiochem. Eng. Aspects “Effect of molecular weight and degree of substitution of quaternary chitosan on its adsorption and flocculation properties for potential retention-aids in alkaline papermaking”, vol. 242, pp. 1-8 (2004).
Holappa et al., “N-chloroacyl-6-O-triphenylmethylchitosans: Useful Intermediates for Synthetic Modifications of Chitosan”, Biomacromolecules 2005, 6(2) 858-863, whole document.
Chun-Ho Kim et al., “Synthesis and Antibacterial Activity of Water-soluble Chitin Derivatives”, Polymers for Advanced Technologies vol. 8 (1997), pp. 319-325.

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