Encapsulated active material system

Details Encapsulated active material system Encapsulated active material system

1985-09-18

1988-06-07

Lovering, Richard D.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

264 41, 264 43, 424 93, 424455, 424460, 424461, 424491, 424493, 514963, A61K 962, A61K 966, A61K 3700, B01J 1302

Patent

active

047496207

ABSTRACT:
Capsules are formed herein a liquified core while avoiding capsule core gelation by adding drops of a solution of either an anionic polymer composition or a cationic polymer composition to a solution of an ionic polymer of opposite charge. The drops contain an active ingredient such as a cell or microorganism capable of producing a biologically active product or can contain a biological or chemical composition. The interface of the ionic polymers form a permeable membrane surrounding the liquid drops.

REFERENCES:
patent: 3994827 (1976-11-01), Sakai et al.
patent: 4407957 (1983-10-01), Lim

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