Articles providing sustained release and method of making

Details Articles providing sustained release and method of making Articles providing sustained release and method of making

1975-03-20

1977-03-08

Spear, Jr., Frank A.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 27, 71 33, 71 64F, 424 19, 427407C, 427416, C05C 900, C05G 300

Patent

active

040110613

ABSTRACT:
Articles for providing sustained release of water-soluble components. The articles comprise agglomerate particles comprising an organophobic water-soluble nucleus particle surrounded by smaller, clinging organophilic particles. The agglomerate particles are bound into a coherent mass, such as a tablet, by an organic, water-insoluble binder. The release characteristics of the articles can be selectively controlled by controlling the type and relative amount of the organophilic particles employed. The articles can be made by dry-blending the solid ingredients and forming and fusing the blended mass.

REFERENCES:
patent: 3192031 (1965-06-01), Zaayenga
patent: 3223518 (1965-12-01), Hansen
patent: 3306730 (1967-02-01), Malmberg
patent: R27238 (1971-11-01), Stansbury

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