Method for preparing microcapsules

Details Method for preparing microcapsules Method for preparing microcapsules

1980-02-07

1982-10-26

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

8552, 71 6411, 25217413, 25229901, 252388, 252426, 252522A, 282 275, 424 32, 426 89, 4283206, 428914, B01J 1302

Patent

active

043561098

ABSTRACT:
A method for preparing microcapsules comprising polymerizing urea and formaldehyde in the presence of an anionic polyelectrolyte and an ammonium salt of an acid and forming a wall membrane of a urea/formaldehyde resin around droplets of a hydrophobic oily liquid.

REFERENCES:
patent: 3707514 (1972-12-01), Vassiliades et al.
patent: 4001140 (1977-01-01), Foris et al.
patent: 4251386 (1981-02-01), Saeki et al.
Encyclopedia of Polymer Science and Technology, John Wiley & Sons, Inc., vol. 2, pp. 30 and 31, (1965).

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