Process for coating dispersed minute droplets with membrane

Details Process for coating dispersed minute droplets with membrane Process for coating dispersed minute droplets with membrane

1979-06-28

1981-12-01

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

282 275, 424 32, 427151, 427152, 428307, 428914, B01J 1302

Patent

active

043035485

ABSTRACT:
Microcapsules containing water-insoluble liquid, of which wall membrane is urea-formaldehyde resin is produced by the addition of a water soluble organic acid, urea and formaldehyde to an emulsion of the liquid, which is made by a nonionic emulsifier and heating the emulsion to effect the polycondensation of urea and formaldehyde.

REFERENCES:
patent: 3516914 (1970-06-01), Matson
patent: 3993831 (1976-11-01), Vassiliades
patent: 4001140 (1977-01-01), Foris et al.
patent: 4157983 (1979-06-01), Golden

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