公开(公告)号：US3694252A

公开(公告)日：1972-09-26

申请号：US3694252D

申请日：1971-05-19

Applicant: POLAROID CORP

Inventor： GERBER ARTHUR M ,  STORY SYBIL N ,  WALWORTH VIVIAN K

IPC: B01J13/18 ,  C08F2/44 ,  G03C1/00 ,  B44D1/20

CPC classification number: G03C1/002 ,  B01J13/185 ,  C08F2/44

Abstract: THIS APPLICATION IS DIRECTED TO A METHOD FOR PREPARING MICROCAPSULES COMPRISING A NUCLEUS OF SILVER HALIDE SURROUNDED BY A CONTINUOUS WALL OF A SYNTHETIC POLYMER, WHICH METHOD COMPRISES SUBJECTING THE REACTANTS INCLUDING MONOMER AND SILVER HALIDE GRAINS IN AN ELECTROLYTE TO AN ELECTRIC FIELD BETWEEN A PAIR OF ELECTRODES, WHEREBY, THE MONOMERS PREFERRENTIALLY POLYMERIZE AROUND THE SILVER HALIDE.