Process for production of encapsulated water-dispersible materia

Details Process for production of encapsulated water-dispersible materia Process for production of encapsulated water-dispersible materia

1977-07-28

1979-06-12

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

8 79, 71 64F, 106308N, 424 32, B01J 1302, A01N 1700, A61K 958

Patent

active

041579836

ABSTRACT:
Capsules containing water-dispersible material are disclosed. They are formed from an admixture of low HLB emulsifier, oily water-immiscible solvent for the emulsifier urea-formaldehyde prepolymer water-dispersible material, and water. This admixture is agitated to form a water-in-oil emulsion to which amphiphatic acidic catalyst is added to cure the prepolymer. After curing to solid form, the capsules are separated from the remaining liquid of the admixture.

REFERENCES:
patent: 3669899 (1972-06-01), Vassiliades et al.
patent: 3928272 (1975-12-01), Brancato et al.

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