Microcapsules useful in carbonless copying systems and process f

Details Microcapsules useful in carbonless copying systems and process f Microcapsules useful in carbonless copying systems and process f

1974-07-29

1976-12-28

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

427151, 428307, B01J 1302

Patent

active

040000877

ABSTRACT:
Disclosed is a process for preparing improved microcapsules which are useful in connection with carbonless copying systems. Also disclosed are the microcapsules themselves which comprise minute discrete droplets of liquid fill material including an initially colorless chemically reactive color forming dye precursor and a carrier therefor encapsulated within individual, rupturable, generally continuous polyamide shells formed thereabout. The process comprises the steps of incorporating in the fill material, an amount of an epoxy resin or a polystyrene resin effective to render the microcapsules resistant to inadvertent release and transfer of the fill material.

REFERENCES:
patent: 3016308 (1962-01-01), Macaulay
patent: 3287154 (1966-11-01), Haas
patent: 3396117 (1968-08-01), Schuetze
patent: 3429827 (1969-02-01), Ruus
patent: 3806463 (1974-04-01), Konishi et al.
patent: 3824114 (1974-07-01), Vassiliades et al.

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