Plastic and nonmetallic article shaping or treating: processes – Encapsulating normally liquid material – Liquid encapsulation utilizing an emulsion or dispersion to...
Patent
1985-08-16
1988-05-17
Lovering, Richard D.
Plastic and nonmetallic article shaping or treating: processes
Encapsulating normally liquid material
Liquid encapsulation utilizing an emulsion or dispersion to...
264 41, 424 93, 424455, 424460, 424461, 4284022, 514963, A61K 962, A61K 964, A61K 3700, B01J 1302
Patent
active
047449330
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.
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Rha ChoKyun
Rodriguez-Sanchez Dolores
Cook Paul J.
Lovering Richard D.
Massachusetts Institute of Technology
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