Process for preparing microcapsules for pressure sensitive manif

Details Process for preparing microcapsules for pressure sensitive manif Process for preparing microcapsules for pressure sensitive manif

1982-01-20

1984-03-06

Lovering, Richard D.

Plastic and nonmetallic article shaping or treating: processes

Encapsulating normally liquid material

Liquid encapsulation utilizing an emulsion or dispersion to...

282 275, 4283206, 42840221, 428914, B01J 1302

Patent

active

044353405

ABSTRACT:
A process for preparing microcapsules for pressure sensitive manifold paper characterized by emulsifying in a hydrophilic liquid a hydrophobic liquid containing an aromatic isocyanate represented by the formula ##STR1## wherein n is an integer of 1 to 10, an aliphatic isocyanate and an electron donating organic chromogenic material, and forming a polymer at the interface to cover hydrophobic liquid droplets with the polymer.

REFERENCES:
patent: 3577515 (1971-05-01), Vandegaer
patent: 3900669 (1975-08-01), Kiritani
patent: 4228216 (1980-10-01), Austin et al.

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