Method of making ester-crosslinked chitosan support materials an

Details Method of making ester-crosslinked chitosan support materials an Method of making ester-crosslinked chitosan support materials an

1996-05-29

1999-02-23

Nutter, Nathan M.

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

Organic compounds

Carbohydrates or derivatives

525 5421, C08B 3708, C08G 6348, C08G 6391

Patent

active

058745513

ABSTRACT:
Chitosan support material is crosslinked using a heat-induced, amidification reaction in non-aqueous solvent. Crosslinking is achieved by the use of dicarboxylic acids which form amide bonds with chitosan. The type and degree of crosslinking can be controlled to tailor mechanical strength, solubility, and functionality, of the resulting chitosan support material. Quaternization and/or cyclodextrin-modification functionalization of the chitosan beads can also be effected in addition to the crosslinking to produce separation materials with great versatility and utility. The invention is applicable to chitosan support materials of various solids contents and geometrical shapes such as beads, fibers, films, and adhesive coatings.

REFERENCES:
patent: 2217823 (1940-10-01), Thor
patent: 3948823 (1976-04-01), Lee et al.
patent: 3962158 (1976-06-01), Mima et al.
patent: 4029727 (1977-06-01), Austin et al.
patent: 4309534 (1982-01-01), Austin
patent: 4879340 (1989-11-01), Moriguchi et al.
patent: 5021207 (1991-06-01), De Lucca et al.
patent: 5114788 (1992-05-01), Nakagawa et al.
patent: 5283064 (1994-02-01), Suzuki et al.
patent: 5306550 (1994-04-01), Nishiyama et al.
Hosokawa et al., Ind. Eng. Chem. Res., 29:800-805 1990.
Hosokawa et al., Ind. Eng. Chem. Res., 30:788-792 1991.
Isogai et al., Carbohydrate Polymers, 19:25-28 1992.
Hasegawa et al., J. Appl. Poly. Sci., 45:1873-1879 1992.
Hirano et al., Science News, vol. 44, pp. 74.
A. Toffey et al., "Heat Induced Conversion of Chitosan to Chitin," presented at ACS Chem. Soc. Div. of Cellulose, Paper and Textile, No. 066, 209th ACS National Meeting, Anaheim, CA Apr. 2-6, 1995.

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