Encapsulation process
Abstract
Abstract IN A PROCESS FOR ENCAPSULATION BY INTERFACIAL CONDENSATION OF A PAIR OF COMPLEMENTARY, DIRECT-ACTING, ORGANIC, POLYCONDENSATE-FORMING INTERMEDIATES IN SEPARATE FIRST AND SECOND LIQUIDS WHICH ARE SUBSTANTIALLY IMMISCIBLE, THEREBY ENCAPSULATING DROPLETS OF THE FIRST LIQUID WITHIN A SKIN OF THE PRODUCED POLYCONDENSATE, THE CHARACTER OF THE TWO LIQUIDS BEING SUCH THAT THE POLYCONDENSATE SKIN GROWS AWAY FROM THE FIRST LIQUID AND INTO THE SECOND LIQUID AT ANY INTERFACE THEREBETWEEN, THE IMPROVEMENT FOR PREVENTING COALESCENCE AND AGGLOMERATION OF THE CAPSULES BOTH DURING AND AFTER THE TERMINATION OF POLYCONDENSATE SKIN GROWTH, CHARACTERIZED BY THE PRESENCE OF A SOLID FINELY DIVIDED DISPERING AGENT IN THE SECOND LIQUID WHILE THE POLYCONDENSATE SKIN IS GROWING, THE AGBENT BEING SUBSTANTIALLY INSOLUBLE IN THE FIRST AND SECOND LIQUIDS, AND BEING OF SUFFICIENT PARTICLE SIZE TO BE RETAINED ON THE POLYCONDENSATE SKIN SURFACE.
Inventors
- 👤 Jan E Vandegaer
- 👤 Frank G Meier
Bibliographic Details
Claims Analysis
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