Encapsulating particles and process for making same
Abstract
Abstract ANISOTROPIC POLYMER PARTICLES COMPRISING A THIN SKIN WHICH FORMS EITHER A MIXROPOROUS OR DIFFUSIVE BARRIER LAYER AND A SUBSTANTIALLY HOLLOW INTERIOR WHICH INTERIOR, HOWEVER, COMPRISES SUFFICIENT MACROPOROUS POLYMER SUPPORT STRUCTURE TO SUBSTANTIALLY ENHANCE THE PHYSICAL STRENGTH, PARTICULARLY THE RESISTANCE TO COMPRESSION, OF THE PARTICLES. THESE PARTICLES HAVE EXCELLENT UTILITY FOR ENCAPSULATING VARIOUS MATERIALS FOR CONTROLLED RELEASE THEREFROM, FOR IMMOBILIZING SOME CHEMICAL REACTANTS WHILE ALLOWING FREE ACCESS AND EGRESS OF OTHER REACTANTS OR REACTION PRODUCTS FROM THE PARTICLE, AND FOR EFFECTING SEPARATIONS BSED ON DIFFUSION OF DIFFERENT-SIZE MOLECULES THERETHROUGH. THE VERSATILE PROCESS BY WHICH THESE PARTICLES ARE FORMED IS ALSO A SUBJECT OF THE INSTANT INVENTION.
Inventors
- 👤 Shmuel Sternberg
- 👤 Harris J Bixler
- 👤 Alan S Michaels
Bibliographic Details
Claims Analysis
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