Method for preparation of a shaped chitin body containing a phys

Details Method for preparation of a shaped chitin body containing a phys Method for preparation of a shaped chitin body containing a phys

1992-10-19

1994-03-01

Raymond, Richard L.

Plant protecting and regulating compositions

Plant growth regulating compositions

424408, 424488, 514777, A01N 2510

Patent

active

052907520

ABSTRACT:
A shaped chitin body containing a high content of a physiologically active substance, such as a drug to be used for the cure or prevention of disease, is prepared by incorporating said physiologically active substance into a dope comprising (a) a water-insoluble chitin, (b) lithium chloride, and (c) N-methylpyrrolidone and/or dimethylacetamide, with the amount of said physiologically active substance incorporated being 0.5 wt. % or more with respect to the amount of the chitin contained in said dope, and thereafter coagulating the resulting mixture with a coagulant to obtain a shaped body.
The high content of the physiologically active substance thus incorporated in the shaped chitin can be slowly released therefrom over a long period of time. The shaped-chitin of the present invention is characterized by long duration of the physiological activity of the active substance contained therein.

REFERENCES:
patent: 3911098 (1975-10-01), Capozza
patent: 4007258 (1977-02-01), Cohen et al.
patent: 4059457 (1977-11-01), Austin
patent: 4267280 (1981-05-01), McCormick, II
patent: 4267281 (1981-05-01), McCormick, III
patent: 4282209 (1981-08-01), Tocker
patent: 4376199 (1983-03-01), Koshugi
patent: 4378017 (1983-03-01), Koshugi et al.
patent: 4389331 (1983-06-01), Samejima et al.
patent: 4536207 (1985-08-01), McCandliss et al.
patent: 4704268 (1987-11-01), Kifune
Chemical Abstracts, vol. 101, No. 14, Oct. 1, 1984, p. 66 No. 112325v.
Patent Abstracts of Japan, vol. 3, No. 55 (C-45), May 11, 1979, p. 141 C 45 and JP-A-54 31 458 of Mar. 8, 1979.
McCormick I. CAS 96:81186x, 1980.
McCormick, C. L. IV et al (1984) CA 101:186132b.
McCormick et al V, "Homogenous Solution, etc" J. Polymer Science 17 494 (1979).
Unitika, "Chitin dopes." (1984) CA 101:112326w (1984).
Miyazaki et al, "The use of chitin, etc;" (1981) Chem. Pharm. Bull., vol. 29, pp. 3067-3069 (1981).
Teijin, "Solubilizing drugs by size, etc.," (1984) CA 100:126927j (1984).
Chang et al, "Effects of water removal, etc;" (1980) CA 94:152614g (1981).

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