Process for producing microcapsule containing diazonium salt com

Details Process for producing microcapsule containing diazonium salt com Process for producing microcapsule containing diazonium salt com

1994-12-21

1996-08-20

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

430168, 430169, G03C 172

Patent

active

055478069

ABSTRACT:
The invention is directed to a process for producing microcapsules containing a diazonium salt compound by the steps of (i) adding a dialkyl sulfate compound represented by the formula: RO--SO.sub.2 --OR, where R is an alkyl or cycloalkyl group having up to 24 carbon atoms, to an organic solvent solution containing a diazonium salt compound and a polyfunctional isocyanate compound, (ii) emulsifying the resulting organic solvent solution into an aqueous solution of ,a water-soluble polymer, and then (iii) polymerizing the polyfunctional isocyanate compound to form microcapsule walls. The invention also discloses the recording material produced by the process.

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