Encapsulation by entrapment

Details Encapsulation by entrapment Encapsulation by entrapment

1976-10-19

1981-07-07

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

71 3, 71 64F, 71 66, 71100, 71117, 424 19, 424 22, 424 35, 424213, 424354, 427214, B01J 1302, A01N 2526

Patent

active

042773644

ABSTRACT:
Water-soluble and water-insoluble solid and liquid core materials are encapsulated by the same method. Core materials are simply entrapped in a matrix of water-insoluble polyhydroxy polymers which are insolubilized from their corresponding water-soluble xanthates in the presence of the core materials. Encapsulation of biologically active compositions provides a shield against hostile environments, improves safety in handling, and slows the release of such compounds to the surrounding medium. Highly volatile liquids are protected against losses by evaporation. Encapsulation also provides protection against decomposition from exposure to ultraviolet light.

REFERENCES:
patent: 3160552 (1964-12-01), Russell et al.
patent: 3247066 (1966-04-01), Milosovich, Jr.
patent: 3576660 (1971-04-01), Bayless et al.
patent: 3576760 (1971-04-01), Gould et al.
patent: 3669722 (1972-06-01), Bishop
patent: 3778383 (1973-12-01), Schibler et al.
R. E. Grim: Clay Mineralogy, 2nd Ed., (1968), pp. 185-186,212,213.
E. G. Hallsworth: 3rd International Symposium on Soil Conditioning, (1975), pp. 3-11.

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