Method for the manufacture of microcapsules for pressure-sensiti

Details Method for the manufacture of microcapsules for pressure-sensiti Method for the manufacture of microcapsules for pressure-sensiti

1989-06-15

1991-12-24

Lovering, Richard D.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Identified reactant isolating material or capsule wall...

430138, 264 47, 503214, 503221, B01J 1316, B41M 5165, G03C 112

Patent

active

050752790

ABSTRACT:
A method for the manufacture of microcapsules for use in pressure-sensitive recording sheets is disclosed, which comprises after dispersing and emulsifying in a hydrophilic liquid a solution obtained by dissolving (a) a polyisocyanate, (b) an alkyleneoxide adduct of an amine and (c) an electron-donating color former in a hydrophobic liquid, adding a polyamine to the emulsified dispersion and forming microcapsules of poly(urethane urea) around the liquid droplets containing the color former.

REFERENCES:
patent: 3577515 (1971-05-01), Vandegaer et al.
patent: 4076774 (1978-02-01), Short
patent: 4104910 (1978-08-01), Ogata et al.
patent: 4230743 (1980-10-01), Nakamura et al.
patent: 4418942 (1983-12-01), Hosoi et al.
patent: 4529681 (1985-07-01), Usami et al.
patent: 4598035 (1986-07-01), Usami et al.
patent: 4800193 (1989-01-01), Saeki et al.
patent: 4803192 (1989-02-01), Saeki et al.
patent: 4876233 (1989-10-01), Saeki et al.
Kondo, A., Microcapsule Processing and Technology, Chap. 5, "Microencapsulation by Interfacial Polymerization" (Marcel Dekker, Inc., N.Y.), 1979.

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