Microencapsulation process

Details Microencapsulation process Microencapsulation process

1974-03-06

1981-06-16

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

71 64F, 282 275, 424 32, 424 33, 424 34, 424 35, 424 37, 426 98, 428307, 428914, B01J 1302

Patent

active

042736722

ABSTRACT:
Microcapsules are formed in the absence of coacervation by providing an oil-in-water emulsion containing a polymeric, emulsifying agent having cross-linkable groups or complexing sites and admixing with the emulsion a cross-linking agent or a complexing agent which forms an impermeable coating around the dispersed oil droplets. The emulsifying agent may be non-proteinaceous or the protein, gelatin. Impermeable capsule walls are formed solely by the addition of the cross-linking or complexing agent and extraneous hardening agents are obviated. Moreover, the emulsifying agent may be a preformed, polymeric, cross-linking agent which eliminates the need for any separate cross-linking agent.

REFERENCES:
patent: 3137631 (1964-06-01), Soloway
patent: 3201353 (1965-08-01), Corben
patent: 3594328 (1971-07-01), Schibler
patent: 3886084 (1975-05-01), Vassiliades

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