Microencapsulation process by coacervation

Details Microencapsulation process by coacervation Microencapsulation process by coacervation

1995-04-12

1996-07-30

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Biocides; animal or insect repellents or attractants

424456, A01M 2508

Patent

active

055409270

ABSTRACT:
There is disclosed a process for microencapsulation of materials by means of complex coacervation employeing gelatin and polyaspartic acid. Material to be encapsulated is emulsified in an aqueous solution of gelatin. Polyaspartic acid or a salt thereof is employed to provide a counter ion to the gelatin which, when induced to precipitate from solution by cooling and/or pH change forms a wall around the material. The wall is hardened by crosslinking to form a stable microcapsule containing the material.

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