Microcapsule for pressure-sensitive recording paper and process

Details Microcapsule for pressure-sensitive recording paper and process Microcapsule for pressure-sensitive recording paper and process

1984-06-21

1987-06-02

Lovering, Richard D.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

264 47, 503215, 428914, B01J 1302, B32B 2742

Patent

active

046703446

ABSTRACT:
A microcapsule enclosing a color-former solution for a pressure-sensitive recording paper is prepared by a process in which a water-soluble cationic urea resin and at least one of prepolymer selected from the group consisting of melamine-formaldehyde prepolymer, urea-formaldehyde prepolymer and melamine-urea-formaldehyde prepolymer are polycondensed on the surface of a dispersed solvent droplet containing a color-former in the presence of an anionic surfactant, while causing complex-coacervation between the water-soluble cationic urea resin and the anionic surfactant.

REFERENCES:
patent: 3565559 (1971-02-01), Sato et al.
patent: 3607775 (1971-09-01), Yoshida et al.
patent: 3796669 (1974-03-01), Kiritani et al.
patent: 4105823 (1978-08-01), Hasler et al.
patent: 4223060 (1980-09-01), Raine et al.

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