Polysaccharide-based superabsorbent film

Details Polysaccharide-based superabsorbent film Polysaccharide-based superabsorbent film

2006-07-04

2006-07-04

Jiang, Shaojia A. (Department: 1623)

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

Organic compounds

Carbohydrates or derivatives

C536S105000, C536S056000, C536S106000, C536S114000, C536S119000, C536S123100, C536S126000, C536S118000, C524S557000, C604S374000, C568S029000

Reexamination Certificate

active

07071327

ABSTRACT:
A superabsorbent polysaccharide can be obtained by crosslinking a polysaccharide or derivative thereof with at least 1% by weight of a flexible spacer having a chain length of at least 9 chain atoms and having terminal activated coupling groups. The flexible spacer may comprise a polyalkyleneglycol with a molecular weight from about 400 to 10,000. The coupling groups may be provided by divinyl sulphone units.

REFERENCES:
patent: 5414135 (1995-05-01), Snow et al.
patent: 6143821 (2000-11-01), Houben
patent: WO 95/31500 (1995-11-01), None
patent: WO9531500 (1995-11-01), None
patent: 97/18890 (1997-05-01), None
patent: WO 97/18890 (1997-05-01), None

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