公开(公告)号：US3639306A

公开(公告)日：1972-02-01

申请号：US3639306D

申请日：1968-08-08

Applicant: AMICON CORP

Inventor： STERNBERG SHMUEL ,  BIXLER HARRIS J ,  MICHAELS ALAN S

IPC: B01J13/14 ,  A01N25/28 ,  A61K9/16 ,  A61K9/22 ,  B01D67/00 ,  B01J13/02 ,  B01J13/08 ,  C08J9/28 ,  C12N11/04 ,  C08J1/28

CPC classification number: B01D69/141 ,  B01J13/08 ,  C08J9/28 ,  C08J2201/0544 ,  C12N11/04 ,  Y10S71/903 ,  Y10S71/904 ,  Y10T428/2987 ,  Y10T428/2989 ,  Y10T428/2998

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.

公开(公告)号：US3598728A

公开(公告)日：1971-08-10

申请号：US3598728D

申请日：1969-06-16

Applicant: AMICON CORP

Inventor： BIXLER HARRIS J ,  STERNBERG SHMUEL

IPC: B01D61/38 ,  B01D63/00 ,  B01D13/00 ,  B01D31/00

CPC classification number: B01D61/38 ,  B01D61/145 ,  B01D63/065 ,  B01D69/02

Abstract: A NOVEL SEPARATIVE APPARATUS COMPRISING A SEPARATION ZONE WHEREBY (1) AN IMMOBILIZED LIQUID PHASE IS SEPARATED FROM A MOBILE LIQUID PHASE BY A SEMI-PERMEABLE MEMBRANE AND WHEREIN SAID MOBILE LIQUID PHASE IS A CARRIER LIQUID FOR A PLURALITY OF COMPOUNDS, AT LEAST ONE OF WHICH COMPOUNDS INTERACTS, CHEMICALLY OR PHYSICALLY, WITH THE SEMI-PERMEABLE MEMBRANE AND/OR THE IMMOBILIZED LIQUID PHASE AND IS THEREBY RETARDED IN ITS PROGRESS THROUGH THE REACTION ZONE.