Process for the production of microgranulates
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF SOLID, FREE-FLOWING SPHERICAL MICROGRANULATES FROM A POLYMER MATRIX CONTAINING SOLID OR LIQUID PARTICLES OF A CORE MATERIAL EMBEDDED THEREIN, WHEREIN IN A SOLVENT SOLUBLE TO AT MOST 15% BY WEIGHT IN WATER AT 20*C., (2) A SOLID OR LIQUID CORE MATERIAL IS DISSOLVED OR DISPERSED IN THIS SOLUTION, (3) THE RESULTING SOLUTION OR DISPERSION ("ORGANIC PHASE A") IS SUSPENDED IN AN AQUEOUS LIQUID (AQUEOUS PHASE B) THAT IS IMMISCIBLE WITH THE ORGANIC SOLVENT, (4) THE ORGANIC SOLENT IS ALLOWED TO MIGRATE SLOWLY AND UNDER CONTROL OUT OF THE ORGANIC PHASE A SO THAT THE DISSOLVED POLYMER IS DEPOSITED ONTO THE SURFACE OF THE PRTICLES DISPERSED IN AQUEOUS PHASE B, AND (5) THE SOLIDIFIED PARTICLES, I.E. THE MICROGRANULATE, ARE SEPARATED OFF.
Inventors
- 👤 H Schnoring
- 👤 G Pampus
- 👤 N Schon
- 👤 J Witte
Bibliographic Details
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