Process for encapsulating particles with at least two coating la

Details Process for encapsulating particles with at least two coating la Process for encapsulating particles with at least two coating la

1986-03-10

1987-04-14

Albrecht, Dennis L.

Coating processes

Particles, flakes, or granules coated or encapsulated

Solid encapsulation process utilizing an emulsion or...

252 91, 252 99, 252174, 25217413, 25218625, 25218635, 25218636, 25218637, 427214, 427220, 4273722, 4273741, 4273742, 4273743, 4273744, 427375, 427384, 428403, B05D 102, B05D 136, B05D 302, C11D 1100

Patent

active

046577840

ABSTRACT:
High efficiency encapsulation of core particles, particularly halogen bleaches, by (i) encapsulating the core particle in at least two separate coats wherein the melting point of the inner or first coating material is below the melting point of the outer or second coating material, (ii) heating the thus encapsulated particle to a temperature between the melting points of the inner and outer coating materials in order to liquefy the inner coat, and (iii) allowing the liquid inner coat to solidify and form a continuous, nonporous encapsulating coating.

REFERENCES:
patent: 3112274 (1963-11-01), Morgenthaler et al.
patent: 3154494 (1964-10-01), Speak et al.
patent: 3650961 (1972-03-01), Hudson
patent: 3703470 (1972-11-01), Brennan
patent: 3908045 (1975-09-01), Alterman
patent: 3925234 (1975-12-01), Hachmann
patent: 3962106 (1976-06-01), Rubin et al.
patent: 3967039 (1976-06-01), Ninane
patent: 4048351 (1977-09-01), Saeman
patent: 4078099 (1978-03-01), Mazzola
patent: 4136052 (1979-01-01), Mazzola
patent: 4327151 (1982-04-01), Mazzola
patent: 4421669 (1983-12-01), Brichard
patent: 4444674 (1984-04-01), Gray
patent: 4526699 (1985-07-01), Jones

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