Absorbent with stability against salts and process for productio

Details Absorbent with stability against salts and process for productio Absorbent with stability against salts and process for productio

1995-05-09

1998-09-22

Nutter, Nathan M.

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

Organic compounds

Carbohydrates or derivatives

536 2, 536 3, 536 21, 536114, B01J 2024, B01J 2026, B01J 2028, B01J 2030

Patent

active

058115315

ABSTRACT:
Absorbents of the present invention can be obtained by reacting the vicinity of the surface of (A) polysaccharide particles with a (B) crosslinking agent having at least two functional groups which can react with the polysaccharides such as polyglycidyl ether compounds, polyhydric alcohol compounds or polyamine compounds by means of treating the (A) polysaccharide particles with the (B) crosslinking agent and an aqueous solution of a (C) water soluble compound while heated. The obtained absorbents exhibit excellent absorbing ability even to a high concentrated salt solution and also are well biodegradable.

REFERENCES:
patent: 4051086 (1977-09-01), Reid
patent: 4076663 (1978-02-01), Masuda et al.
patent: 4734478 (1988-03-01), Tsubakimoto et al.
patent: 5470964 (1995-11-01), Qin
European Search Report for Application No. PCT/JP93/01526 dated Jan. 10, 1994.
Copy of Supplementary European search Report dated Jan. 8, 1996.

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